MIC2950*/2951
150mA Low-Dropout Voltage Regulator
* MIC2950 Discontinuance September 2007.
MM8 is a registered trademark of Micrel, Inc.
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com
February 2010 M9999-021610
General Description
The MIC2950 and MIC2951 are “bulletproof” micropower
voltage regulators with very low dropout voltage (typically
40mV at light loads and 250mV at 100mA), and very low
quiescent current. Like their predecessors, the LP2950 and
LP2951, the quiescent current of the MIC2950/MIC2951
increases only slightly in dropout, thus pro-longing battery
life. The MIC2950/MIC2951 are pin for pin compatible with
the LP2950/LP2951, but offer lower dropout, lower
quiescent current, reverse battery, and automotive load
dump protection.
The key additional features and protection offered include
higher output current (150mA), positive transient protection
for up to 60V (load dump), and the ability to survive an
unregulated input voltage transient of –20V below ground
(reverse battery).
The plastic DIP and SOIC versions offer additional system
functions such as programmable output voltage and logic
controlled shutdown. The 3-pin TO-92 MIC2950 is pin-
compatible with the older 5V regulators.
These system functions also include an error ag output
that warns of a low output voltage, which is often due to
failing batteries on the input. This may also be used as a
power-on reset. A logic-compatible shutdown input is also
available which enables the regulator to be switched on and
off. This part may also be pin-strapped for a 5 V output, or
programmed from 1.24 V to 29 V with the use of two
external resistors.
Data sheets and support documentation can be found on
Micrel’s web site at: www.micrel.com.
Features
High accuracy 3.3, 4.85, or 5V, guaranteed 150mA
output
Extremely low quiescent current
Low-dropout voltage
Extremely tight load and line regulation
Very low temperature coefficient
Use as regulator or reference
Needs only 1.5µF for stability
Current and thermal limiting
Unregulated DC input can withstand –20V reverse
battery and +60V positive transients
MIC2951 Version Only
Error flag warns of output dropout
Logic-controlled electronic shutdown
Output programmable from 1.24 to 29V
Applications
Automotive electronics
Voltage reference
Avionics
Cellular telephones
Battery powered equipment
SMPS post-regulator
High efficiency linear power supplies
___________________________________________________________________________________________________________
Block Diagram
Micrel, Inc. MIC2950/2951
February 2010 2 M9999-021610
The MIC2950 is available as either an -05 or -06 version.
The -05 and -06 versions are guaranteed for junction
temperatures from –40°C to +125°C; the -05 version has
a tighter output and reference voltage specication
range over temperature. The MIC2951 is available as an
-02 or -03 version.
The MIC2950 and MIC2951 have a tight initial tolerance
(0.5% typical), a very low output voltage temperature
coefcient which allows use as a low-power voltage
reference, and extremely good load and line regulation
(0.04% typical). This greatly reduces the error in the
overall circuit, and is the result of careful design
techniques and process control.
___________________________________________________________________________________________________________
Ordering Information
Part Number Voltage Accuracy Junction
Temperature Range Package Lead Finish
MIC2950-05BZ* 5.0V 0.5% –40° to +125°C 3-Pin TO-92 Standard
MIC2950-06BZ* 5.0V 1.0% –40° to +125°C 3-Pin TO-92 Standard
MIC2951-02BM 5.0V 0.5% –40° to +125°C 8-Pin SOIC Standard
MIC2951-03BM 5.0V 1.0% –40° to +125°C 8-Pin SOIC Standard
MIC2951-02BN** 5.0V 0.5% –40° to +125°C 8-Pin Plastic DIP Standard
MIC2951-03BN 5.0V 1.0% –40° to +125°C 8-Pin Plastic DIP Standard
MIC2951-03BMM 5.0V 1.0% –40° to +125°C 8-Pin MSOP Standard
MIC2951-3.3BM 3.3V 1.0% –40° to +125°C 8-Pin SOIC Standard
MIC2950-05YZ*/*** 5.0V 0.5% –40° to +125°C 3-Pin TO-92 Pb-Free
MIC2950-06YZ*/*** 5.0V 1.0% –40° to +125°C 3-Pin TO-92 Pb-Free
MIC2951-02YM*** 5.0V 0.5% –40° to +125°C 8-Pin SOIC Pb-Free
MIC2951-03YM*** 5.0V 1.0% –40° to +125°C 8-Pin SOIC Pb-Free
MIC2951-03YN*** 5.0V 1.0% –40° to +125°C 8-Pin Plastic DIP Pb-Free
MIC2951-03YMM*** 5.0V 1.0% –40° to +125°C 8-Pin MSOP Pb-Free
MIC2951-3.3YM*** 3.3V 1.0% –40° to +125°C 8-Pin SOIC Pb-Free
Note:
* TO-92 Package discontinuance notification issued September 2007. End-of-life-buy offer thru December 31, 2007. Contact factory for
additional information.
** Contact factory for Pb-Free version.
*** Pb-Free RoHS compliant with ‘high-melting solder’ exemption.
Micrel, Inc. MIC2950/2951
February 2010 3 M9999-021610
Pin Configur ation
TO-92 (Z)
(Bottom View) DIP (N), SOIC (M), MM8® (MM)
(Top View)
Pin Description
Pin No.
MIC2950 Pin No.
MIC2951 Pin Name Pin Function
3 1 OUT Regulated Output.
2 SNS
Sense (Input): Output-voltage sensing end of internal voltage divider for xed 5V
operation. Not used in adjustable conguration.
3 SHDN
Shutdown/Enable (Input): TTL compatible input. High = shutdown, low or open
= enable.
2 4 GND Ground.
5 ERR Error Flag (Output): Active low, open-collector output (low = error, oating =
normal).
6 TAP
3.3V/4.85/5V Tap: Output of internal voltage divider when the regulator is
congured for xed operation. Not used in adjustable conguration.
7 FB
Feedback (Input): 1.235V feedback from internal voltage divider’s TAP (for xed
operation) or external resistor network (adjustable conguration).
1 8 IN Unregulated Supply Input.
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Absolute Maximum Ratings(1)
Input Supply Voltage (VIN) (5).............................–20 to +60V
Feedback Input Voltage (VFB) (6, 7) ....................–1.5 to +26V
Shutdown Input Voltage (VSHDN) (6)...................–0.3 to +30V
Power Dissipation (PD) (4) ..........................Internally Limited
Lead Temperature (soldering, 5 sec.)........................ 260°C
Storage Temperature ................................–65°C to +150°C
ESD(3)
Operating Ratings(2)
Input Supply Voltage (VIN)................................+2.0 to +30V
Junction Temperature (TJ) (4)
MIC2950-05/MIC2950-06................... –40°C to +125°C
MIC2951-02/MIC2950-03................... –40°C to +125°C
Electrical Characteristics(1)
VIN = 6V; IL = 100µA; CL = 1µF; TJ = 25°C, bold values indicate –40°C TJ +125°C; Note 8; unless noted.
Parameter Condition Min Typ Max Units
MIC295x-02/-05 (±0.5%) 4.975 5.000 5.025 V
MIC295x-03/06 (±1%) 4.950 5.000 5.050 V
MIC2951-3.3 (±1%) 3.267 3.300 3.333 V
Output Voltage
TJ = 25°C
MIC2951-4.8 (±1%) 4.802 4.850 4.899 V
MIC295x-02/-05 (±0.5%) 4.950 5.050 V
MIC295x-03/-06 (±1%) 4.925 5.075 V
MIC2951-3.3 (±1%) 3.251 3.350 V
Output Voltage
–25°C TJ +85°C
MIC2951-4.8 (±1%) 4.777 4.872 V
MIC295x-02/-05 (±0.5%) 4.940 5.060 V
MIC295x-03/06 (±1%) 4.900 5.100 V
MIC2951-3.3 (±1%) 3.234 3.366 V
Output Voltage
Over Full Temperature Range
–40°C to +125°C
MIC2951-4.8 (±1%) 4.753 4.947 V
MIC295x-02/-05 (±0.5%), 100µA IL 150mA, TJ TJ(max) 4.930 5.070 V
MIC295x-03/-06 (±1%), 100µA IL 150mA, TJ TJ(max) 4.880 5.120 V
MIC2951-3.3 (±1%), 100µA IL 150mA, TJ TJ(max) 3.221 3.379 V
Output Voltage
Over Load Variation
MIC2951-4.8 (±1%), 100µA IL 150mA, TJ TJ(max) 4.733 4.967 V
MIC295x-02/-05 (±0.5%), Note 9 20 100
ppm/°C
MIC295x-03/-06 (±1%), Note 9 50 150
ppm/°C
MIC2951-3.3 (±1%), Note 9 50 150
ppm/°C
Output Voltage
Temperature Coefficient
MIC2951-4.8 (±1%), Note 9 50 150 ppm/°C
MIC295x-02/-05 (±0.5%), Notes 10, 11 0.03
0.10
0.20
%
%
MIC295x-03/-06 (±1%), Notes 10, 11 0.04
0.20
0.40
%
%
MIC2951-3.3 (±1%), Notes 10, 11 0.04
0.20
0.40
%
%
Line Regulation
MIC2951-4.8 (±1%), Notes 10, 11 0.04
0.20
0.40
%
%
Micrel, Inc. MIC2950/2951
February 2010 5 M9999-021610
Parameter Condition Min Typ Max Units
MIC295x-02/-05 (±0.5%), 100µA IL 150mA, Note 10 0.04
0.10
0.20
%
%
MIC295x-03/-06 (±1%), 100µA IL 150mA, Note 10 0.10
0.20
0.30
%
%
MIC2951-3.3 (±1%), 100µA IL 150mA, Note 10 0.10
0.20
0.30
%
%
Load Regulation
MIC2951-4.8 (±1%), 100µA IL 150mA, Note 10 0.10
0.20
0.30
%
%
MIC295x-02/-03/-05/-06, IL = 100µA, Note 12 40
80
140
mV
mV
MIC295x-02/-03/-05/-06, IL = 100mA, Note 12 250 300 mV
MIC295x-02/-03/-05/-06, IL = 150mA, Note 12 300
450
600
mV
mV
MIC2951-3.3 (±1%), IL = 100µA, Note 12 40
80
150
mV
mV
MIC2951-3.3 (±1%), IL = 100mA, Note 12 250 350 mV
MIC2951-3.3 (±1%), IL = 150mA, Note 12 320
450
600
mV
mV
MIC2951-4.8 (±1%), IL = 100µA, Note 12 40
80
140
mV
mV
MIC2951-4.8 (±1%), IL = 100mA, Note 12 250 300 mV
Dropout Voltage
MIC2951-4.8 (±1%), IL = 150mA, Note 12 320
450
600
mV
mV
MIC295x-02/-03/-05/-06, IL = 100µA 120 180
300
µA
µA
MIC295x-02/-03/-05/-06, IL = 100mA 1.7 2.5
3.5
mA
mA
MIC295x-02/-03/-05/-06, IL = 150mA 4 6
8
mA
mA
MIC2951-3.3 (±1%), IL = 100µA 100 180
300
µA
µA
MIC2951-3.3 (±1%), IL = 100mA 1.7 2.5 mA
MIC2951-3.3 (±1%), IL = 150mA 4 6
10
mA
mA
MIC2951-4.8 (±1%), IL = 100µA 120 180
300
µA
µA
MIC2951-4.8 (±1%), IL = 100mA 1.7 2.5
3.5
mA
mA
Ground Current
MIC2951-4.8 (±1%), IL = 150mA 4 6
8
mA
mA
MIC295x-02/-03/-05/-06, VIN = 4.5V, IL = 100µA 280 350
400
µA
µA
MIC2951-3.3 (±1%), VIN = 3.0V, IL = 100µA 150 350
400
µA
µA
Dropout Ground Current
MIC2951-4.8 (±1%), VIN = 4.3V, IL = 100µA 280 350
400
µA
µA
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February 2010 6 M9999-021610
Parameter Condition Min Typ Max Units
Current Limit VOUT = 0V 300 400
450
mA
mA
Thermal Regulation Note 13 0.05 0.20 %/W
10Hz to 100kHz, CL = 1.5µF 430 µVRMS
10Hz to 100kHz, CL = 200µF 160 µVRMS
Output Noise
10Hz to 100kHz, CL = 3.3µF,
0.01µF bypass Feedback to Output
100 µVRMS
MIC295x-02/-05 (±0.5%) 1.220
1.200
1.235 1.250
1.260
V
V
MIC295x-03/06 (±1%) 1.210
1.200
1.235 1.260
1.270
V
V
MIC2951-3.3 (±1%) 1.210
1.200
1.235 1.260
1.270
V
V
Reference Voltage
MIC2951-4.8 (±1%) 1.210
1.200
1.235 1.260
1.270
V
V
MIC295x-02/-05 (±0.5%), Note 14 1.190 1.270 V
MIC295x-03/-06 (±1%), Note 14 1.185 1.285 V
MIC2951-3.3 (±1%), Note 14 1.185 1.285 V
Reference Voltage
MIC2951-4.8 (±1%), Note 14 1.185 1.285 V
Feedback Bias Current 20 40
60
nA
nA
MIC295x-02/05 (±0.5%), Note 9 20 ppm/°C
MIC295x-03/06 (±1%), Note 9 50 ppm/°C
MIC2951-3.3 (±1%), Note 9 50 ppm/°C
Reference Voltage
Temperature Coefficient
MIC2951-4.8 (±1%), Note 9 50 ppm/°C
Feedback Bias Current
Temperature Coefficient
0.1 nA/°C
Error Comparator (Flag)
Output Leakage Current
VOH = 30V 0.01 1.00
2.00
µA
µA
Error Comparator (Flag)
Output Low Voltage (Flag)
VIN = 4.5V, IOL = 200µA 150 250
400
mV
mV
Error Comparator (Flag)
Upper Threshold Voltage
Note 15 40
25
60 mV
mV
Error Comparator
Lower Threshold Voltage
Note 15 75
95
140
mV
mV
Error Comparator Hysteresis Note 15 15 mV
Micrel, Inc. MIC2950/2951
February 2010 7 M9999-021610
Parameter Condition Min Typ Max Units
MIC295x-02/-05 (±0.5%)
Low
High
2.0
1.3
0.7 V
V
V
MIC295x-03/-06 (±1%)
Low
High
2.0
1.3
0.7 V
V
V
MIC2951-3.3 (±1%)
Low
High
2.0
1.3
0.7 V
V
V
Shutdown Input Logic Voltage
MIC2951-4.8 (±1%)
Low
High
2.0
1.3
0.7 V
V
V
VSHUTDOWN = 2.4V 30 50
100
µA
µA
Shutdown Input Current
VSHUTDOWN = 30V 450 600
750
µA
µA
Regulator Output Current
in Shutdown
Note 7 3
10
20
µA
µA
Notes:
1. Exceeding the absolute maximum rating may damage the device.
2. The device is not guaranteed to function outside its operating rating.
3. Devices are ESD sensitive. Handling precautions are recommended.
4. The junction-to-ambient thermal resistance of the TO-92 package is 180°C/W with 0.4” leads and 160°C/W with 0.25” leads to a PC board. The
thermal resistance of the 8-pin DIP package is 105°C/W junction-to-ambient when soldered directly to a PC board. Junction-to-ambient thermal
resistance for the SOIC (M) package is 160°C/W. Junction-to-ambient thermal resistance for the MM8™ (MM) is 250°C/W.
5. The maximum positive supply voltage of 60V must be of limited duration (100ms) and duty cycle (1%). The maximum continuous supply voltage
is 30V.
6. When used in dual-supply systems where the output terminal sees loads returned to a negative supply, the output voltage should be diode-clamped
to ground.
7. VSHDN 2V, VIN 30V, VOUT = 0, with the FB pin connected to TAP.
8. Additional conditions for 8-pin devices are VFB = 5V, TAP and OUT connected to SNS (VOUT = 5V) and VSHDN 0.8V.
9. Output or reference voltage temperature coefcient is dened as the worst case voltage change divided by the total temperature range.
10. Regulation is measured at constant junction temperature, using pulse testing with a low duty cycle. Changes in output voltage due to heating
effects are covered in the specication for thermal regulation.
11. Line regulation for the MIC2951 is tested at 150°C for IL = 1mA. For IL = 100µA and TJ = 125°C, line regulation is guaranteed by design to 0.2%.
See Typical Performance Characteristics for line regulation versus temperature and load current.
12. Dropout voltage is dened as the input to output differential at which the output voltage drops 100mV below its nominal value measured at 1V
differential. At very low values of programmed output voltage, the minimum input supply voltage of 2V (2.3V over temperature) must be taken into
account.
13. Thermal regulation is dened as the change in output voltage at a time “t” after a change in power dissipation is applied, excluding load or line
regulation effects. Specications are for a 50mA load pulse at VIN = 30V (1.25W pulse) for t = 10ms.
14. VREF VOUT (VIN – 1 V), 2.3V VIN 30V, 100µA < IL 150mA, TJ TJMAX.
15. Comparator thresholds are expressed in terms of a voltage differential at the FB terminal below the nominal reference voltage measured at 6V input.
To express these thresholds in terms of output voltage change, multiply by the error amplier gain = VOUT /VREF = (R1 + R2)/R2. For example, at a
programmed output voltage of 5V, the error output is guaranteed to go low when the output drops by 95mV x 5V/1.235V = 384mV. Thresholds
remain constant as a percent of VOUT as VOUT is varied, with the dropout warning occurring at typically 5% below nominal, 7.5% guaranteed.
16. Specication for packaged product only.
Micrel, Inc. MIC2950/2951
February 2010 8 M9999-021610
Typical Characteristics
Micrel, Inc. MIC2950/2951
February 2010 9 M9999-021610
Typical Characteristics (continued)
Micrel, Inc. MIC2950/2951
February 2010 10 M9999-021610
Typical Characteristics (c ontinued)
Micrel, Inc. MIC2950/2951
February 2010 11 M9999-021610
Application Information
Automotive Applications
The MIC2950/2951 are ideally suited for automotive
applications for a variety of reasons. They will operate
over a wide range of input voltages, have very low
dropout voltages (40mV at light loads), and very low
quiescent currents. These features are necessary for use
in battery powered systems, such as automobiles. They
are also “bulletproof” devices; with the ability to survive
both reverse battery (negative transients up to 20V below
ground), and load dump (positive transients up to 60V)
conditions. A wide operating temperature range with low
temperature coefcients is yet another reason to use
these versatile regulators in automotive designs
External Capacitors
A 1.5µF (or greater) capacitor is required between the
MIC2950/MIC2951 output and ground to prevent
oscillations due to instability. Most types of tantalum or
aluminum elec-trolytics will be adequate; lm types will
work, but are costly and therefore not recommended.
Many aluminum electrolytics have electrolytes that freeze
at about –30°C, so solid tantalums are recomm-ended for
operation below –25°C. The important parameters of the
capacitor are an effective series resistance of about 5 or
less and a resonant frequency above 500kHz. The value
of this capacitor may be increased without limit.
At lower values of output current, less output capacitance
is required for output stability. The capacitor can be
reduced to 0.5µF for current below 10mA or 0.15µF for
currents below 1 mA. Using the 8-pin versions at voltages
below 5V runs the error amplier at lower gains so that
more output capacitance is needed. For the worst-case
situation of a 150mA load at 1.23V output (Output shorted
to Feedback) a 5µF (or greater) capacitor should be used.
The MIC2950 will remain stable and in regulation with no
load in addition to the internal voltage divider, unlike many
other voltage regulators. This is especially important in
CMOS RAM keep-alive applications. When setting the
output voltage of the MIC2951 version with external
resistors, a minimum load of 1µA is recomm-ended.
A 0.1µF capacitor should be placed from the MIC2950/
MIC2951 input to ground if there is more than 10 inches
of wire between the input and the AC lter capacitor or if a
battery is used as the input.
Stray capacitance to the MIC2951 Feedback terminal (pin
7) can cause instability. This may especially be a problem
when using high value external resistors to set the output
voltage. Adding a 100pF capacitor between Output and
Feedback and increasing the output capacitor to at least
3.3µF will remedy this.
Error Detection Comparator Output
A logic low output will be produced by the comparator
whenever the MIC2951 output falls out of regulation by
more than approximately 5%. This gure is the
comparator’s built-in offset of about 60mV divided by the
1.235V reference voltage. (Refer to the block diagram on
Page 1). This trip level remains “5% below normal”
regardless of the programmed output voltage of the
MIC2951. For example, the error ag trip level is typically
4.75V for a 5V output or 11.4V for a 12V output. The out
of regulation condition may be due either to low input
voltage, current limiting, thermal limiting, or overvolt-age
on input (over
40V).
Figure 1 is a timing diagram depicting the /ERROR signal
and the regulated output voltage as the MIC2951 input is
ramped up and down. The /ERROR signal becomes valid
(low) at about 1.3V input. It goes high at about 5V input
(the input voltage at which VOUT = 4.75—for 5.0V
applications). Since the MIC2951’s dropout voltage is
load-dependent (see curve in Typical Performance
Characteristics), the input voltage trip point (about 5V) will
vary with the load current. The output voltage trip point
does not vary with load.
The error comparator has an open-collector output which
requires an external pull-up resistor. Depending on
system requirements, this resistor may be returned to the
output or some other supply voltage. In determining a
value for this resistor, note that while the output is rated to
sink 200µA, this sink current adds to battery drain in a low
battery condition. Suggested values range from 100k to
1M. The resistor is not required if this output is unused.
Programming the Output Voltage (MIC2951)
The MIC2951 may be pin-strapped for 5V (or 3.3V or
4.85V) using its internal voltage divider by tying Pin 1
(output) to Pin 2 (sense) and Pin 7 (feedback) to Pin 6 (5V
Tap). Alternatively, it may be programmed for any output
voltage between its 1.235V reference and its 30V
maximum rating. An external pair of resistors is required,
as shown in Figure 2.
The complete equation for the output voltage is:
1FB
2
1
REFOUT R I
R
R
1VV +
+×=
where VREF is the nominal 1.235 reference voltage and IFB
is the feedback pin bias current, nominally –20nA. The
minimum recommended load current of 1µA forces an
upper limit of 1.2M on the value of R2, if the regulator
must work with no load (a condition often found in CMOS
in standby), IFB will produce a 2% typical error in VOUT
which may be eliminated at room temperature by trimming
R1. For better accuracy, choosing R2 = 100k reduces this
error to 0.17% while increasing the resistor program
current to 12µA.
Micrel, Inc. MIC2950/2951
February 2010 12 M9999-021610
Reducing Output Noise
In some applications it may be advantageous to reduce
the AC noise present at the output. One method is to
reduce the regulator bandwidth by increasing the size of
the output capacitor. This is the only method by which
noise can be reduced on the 3 lead MIC2950 and is
relatively inefcient, as increasing the capacitor from 1µF
to 220µF only decreases the noise from 430µV to 160µV
rms for a 100kHz bandwidth at 5V output.
Noise can be reduced fourfold by a bypass capacitor
across R1, since it reduces the high frequency gain from 4
to unity. Pick:
200HzR2
1
C
1
BYPASS
π
or about 0.01µF. When doing this, the output capacitor
must be increased to 3.3µF to maintain stability. These
changes reduce the output noise from 430µV to
100µVrms for a100kHz bandwidth at 5V output. With the
bypass capacitor added, noise no longer scales with
output voltage so that improvements are more dramatic at
higher output voltages.
Figure 1. ERROR Output Timing
Figure 2. Adjustable Regulator
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February 2010 13 M9999-021610
Typical Applications
5V Regulator with 2.5V Sleep Function Wide Input Voltage Range Current Limiter
Low Drift Current Source 5V Current Limiter
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Typical Applications
Regulator with Early Warning and Auxiliary Output
Micrel, Inc. MIC2950/2951
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Typical Applications
Latch Off When Error Flag Occurs Open Circuit Detector for 4mA to 20mA Current Loop
Regulator with State-of-Charge Indicator
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February 2010 16 M9999-021610
Typical Applications
Low Battery Disconnect
System Over Temperature Pro t ectio n Circuit
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Schematic Diagram
Micrel, Inc. MIC2950/2951
February 2010 18 M9999-021610
Package Information
8-Pin SOIC (M)
0.380 (9.65)
0.370 (9.40) 0.135 (3.43)
0.125 (3.18)
PIN 1
DIMENSIONS:
INCH (MM)
0.018 (0.57)
0.100 (2.54)
0.013 (0.330)
0.010 (0.254)
0.300 (7.62)
0.255 (6.48)
0.245 (6.22)
0.380 (9.65)
0.320 (8.13)
0.0375 (0.952)
0.130 (3.30)
8-Pin Plastic DIP (N)
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8-Pin MSOP (MM)
Micrel, Inc. MIC2950/2951
February 2010 20 M9999-021610
3
2
1
10° typ.
5° typ.
5° typ.
0.185 (4.699)
0.175 (4.445)
0.185 (4.699)
0.175 (4.445)
0.085 (2.159) Diam.
0.500 (12.70) Min.
0.090 (2.286) typ.
0.0155 (0.3937)
0.0145 (0.3683)
Seating Plane
0.025 (0.635) Max
Uncontrolled
Lead Diamet er
0.016 (0.406)
0.014 (0.356)
0.105 (2.667)
0.095 (2.413)
0.055 (1.397)
0.045 (1.143)
0.090 (2.286) Radius, typ
.
0.145 (3.683)
0.135 (3.429)
0.055 (1.397)
0.045 (1.143)
BOTTOM VIEW
TO-92 (Z)
MICREL, INC. 2180 FORTUNE DRIVE SAN JOSE, CA 95131 USA
TEL +1 (408) 944-0800 FAX +1 (408) 474-1000 WEB http://www.micrel.com
The information furnished by Micrel in this data sheet is believed to be accurate and reliable. However, no responsibility is assumed by Micrel for its
use. Micrel reserves the right to change circuitry and specifications at any time without notification to the customer.
Micrel Products are not designed or authorized for use as components in life support appliances, devices or systems where malfunction of a product
can reasonably be expected to result in personal injury. Life support devices or systems are devices or systems that (a) are intended for surgical implant
into the body or (b) support or sustain life, and whose failure to perform can be reasonably expected to result in a significant injury to the user. A
Purchaser’s use or sale of Micrel Products for use in life support appliances, devices or systems is a Purchaser’s own risk and Purchaser agrees to fully
indemnify Micrel for any damages resulting from such use or sale.
© 1999 Micrel, Incorporated.