1
LT1009 Series
■
Maximum Initial Tolerance: 0.2%
■
Guaranteed
Temperature Stability
■
Maximum 0.6Ω Dynamic Impedance
■
Wide Operating Current Range
■
Directly Interchangeable with LM136 for Improved
Performance
■
No Adjustments Needed for Minimum Temperature
Coefficient
The LT
®
1009 is a precision trimmed 2.5V shunt regulator
diode featuring a maximum initial tolerance of only ±5mV.
The low dynamic impedance and wide operating current
range enhances its versatility. The 0.2% reference toler-
ance is achieved by on-chip trimming which not only
minimizes the initial voltage tolerance but also minimizes
the temperature drift.
Even though no adjustments are needed with the LT1009,
a third terminal allows the reference voltage to be adjusted
±5% to calibrate out system errors. In many applications,
the LT1009 can be used as a pin-to-pin replacement of the
LM136 and the external trim network eliminated.
For a lower drift 2.5V reference, see the LT1019 data sheet.
■
Reference for 5V Systems
■
8-Bit A/D and D/A Reference
■
Digital Voltmeters
■
Current Loop Measurement and Control Systems
■
Power Supply Monitor
2.5V Reference
2.5V Reference
, LTC and LT are registered trademarks of Linear Technology Corporation.
DESCRIPTIO
U
APPLICATIO S
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FEATURES
TYPICAL APPLICATION
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LT1009
OUTPUT
3.6k
5V TO 35V
10k*
TRIM
1009 TA01
*DOES NOT AFFECT
TEMPERATURE COEFFICIENT.
±5% TRIM RANGE
TEMPERATURE (°C)
–50
REFERENCE VOLTAGE (V)
2.53
2.52
2.51
2.50
2.49
2.48
2.47 25 75
1009 TA02
–25 0 50 100 125
TYPICAL
GUARANTEED
MAXIMUM
GUARANTEED
MINIMUM
Output Voltage
2
LT1009 Series
LT1009MH
LT1009CH
T
JMAX
= 150°C, θ
JA
= 440°C/ W, θ
JC
= 80°C/ W
ORDER PART NUMBER
Reverse Current .................................................... 20mA
Forward Current ................................................... 10mA
Storage Temperature Range ................. – 65°C to 150°C
Lead Temperature (Soldering, 10 sec).................. 300°C
(Note 1)
ABSOLUTE MAXIMUM RATINGS
W
WW
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PACKAGE/ORDER INFORMATION
W
UU
Operating Temperature Range
LT1009/LT1009C .................................. 0°C to 70°C
LT1009I ........................................... – 40°C to 85°C
LT1009M ........................................ –55°C to 125°C
BOTTOM VIEW
ADJ
+
–
H PACKAGE
3-LEAD TO-46 METAL CAN
TOP VIEW
NC
ADJ
NC
NC
NC
S8 PACKAGE
8-LEAD PLASTIC SO
1
2
3
4
8
7
6
5
T
JMAX
= 150°C, θ
JA
= 190°C/ W
BOTTOM VIEW
Z PACKAGE
3-LEAD PLASTIC TO-92
1
2
3
–
+
ADJ
T
JMAX
= 100°C, θ
JA
= 160°C/ W
ORDER PART NUMBERORDER PART NUMBER
S8 PART MARKING
LT1009S8
LT1009IS8
1009
1009I
LT1009CZ
LT1009IZ
AVAILABLE OPTIO S
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TEMPERATURE PACKAGE STYLE
ACCURACY COEFFICIENT TO-46 SO-8 TO-92
TEMPERATURE (%) (ppm/
°
C) (H) (S8) (Z)
0°C to 70°C 0.20 25 LT1009CH LT1009CZ
0.40 25 LT1009S8
–40°C to 85°C 0.20 25 LT1009IZ
0.40 35 LT1009IS8
–55°C to 125°C 0.20 35 LT1009MH
3
LT1009 Series
Reverse Characteristics Forward Characteristics Reverse Voltage Change
LT1009M LT1009I LT1009/LT1009C
SYMBOL PARAMETER CONDITIONS MIN TYP MAX MIN TYP MAX MIN TYP MAX UNITS
V
Z
Reverse Breakdown T
A
= 25°C, I
R
= 1mA, H, Z Pkg 2.495 2.500 2.505 2.495 2.500 2.505 2.495 2.500 2.505 V
Voltage S Pkg 2.49 2.50 2.51 2.49 2.50 2.51 V
∆V
Z
Reverse Breakdown 400µA ≤ I
R
≤ 10mA 2.6 6 2.6 10 2.6 10 mV
∆I
R
Change with Current ●3.0 10 3.0 12 3.0 12 mV
r
Z
Reverse Dynamic I
R
= 1mA 0.2 0.6 0.2 1.0 0.2 1.0 Ω
Impedance ●0.4 1.0 0.4 1.4 0.4 1.4 Ω
Temperature Stability T
MIN
≤ T
A
≤ T
MAX
●15 15 1.8 4 mV
∆V
Z
Average Temperature 0°C ≤ T
A
≤ 70°C 15 25 15 25 15 25 ppm/°C
∆Temp Coefficient (Notes 2, 3) –40°C ≤ T
A
≤ 85°C 35 ppm/°C
–55°C ≤ T
A
≤ 125°C 25 35 ppm/°C
∆V
Z
Long-Term Stability T
A
= 25°C ±0.1°C 20 20 20 ppm/kHr
∆Time I
R
= 1mA
ELECTRICAL CHARACTERISTICS
TYPICAL PERFORMANCE CHARACTERISTICS
UW
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2: Guaranteed by Design.
The ● denotes specifications which apply over the full operating temperature range, otherwise specifications are TA = 25°C.
For MIL-STD components, please refer to LTC883C data sheet for test listing and parameters.
Note 3: Average temperature coefficient is defined as the total voltage
change divided by the specified temperature change.
REVERSE VOLTAGE (V)
0.5
REVERSE CURRENT (A)
10
–1
10
–2
10
–3
10
–4
10
–5
2.2
1009 G01
1.0 1.4 1.8 2.6
T
J
= 125°C
T
J
= –55°C
T
J
= 25°C
FORWARD CURRENT (mA)
0.001
FORWARD VOLTAGE (V)
1.2
1.0
0.8
0.6
0.4
0.2
0
0.01 0.1 1 10
1009 G02
T
J
= 25°C
REVERSE CURRENT (mA)
0
REVERSE VOLTAGE CHANGE (mV)
5
4
3
2
1
016
1009 G03
4812 20
4
LT1009 Series
Dynamic Impedance Output Noise Voltage Response Time
FREQUENCY (Hz)
10 100k
1009 G05
100 1k 10k
250
200
150
100
50
NOISE (mV/√Hz)
I
R
= 1mA
T
J
= 25°C
TIME (µs)
0
VOLTAGE SWING (V)
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
10
4
01
1009 G06
20
INPUT
OUTPUT
5k
INPUT
OUTPUT
FREQUENCY (Hz)
10
DYNAMIC IMPEDANCE (Ω)
100
10
1
0.1 100 1k 10k 100k
1009 G04
I
R
= 1mA
–55°C ≤ T
J
≤ 125°C
SCHE ATIC DIAGRA
WW
30pF
10k
20pF
Q17
24k
24k
2k 1.1k
50k
6.6k
6.6k
500Ω
ADJ
30k
+
–
1009 SD
Q8
Q2
Q1 Q4
Q6
Q10
Q16
Q9
Q11
Q13
Q12
Q3 Q5
Q14
Q18
Q15
Q7
TYPICAL PERFORMANCE CHARACTERISTICS
UW
5
LT1009 Series
TYPICAL APPLICATIONS
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LT1009
62Ω
V
+
V
–
R
3.6V TO 40V
10k
1009 TA03
LM334
LT1009
375Ω
1.2k
V
IN
V
OUT
2k
1009 TA04
LT317A
ADJ
IN OUT
LT1009
OUT
5k
5V
5k
5V
–5V
–5V
10k
1%
9.76k
1%
500Ω
1009 TA05
5k
Wide Supply Range, Adjustable Reference Low Temperature Coefficient Power Regulator
Switchable ±1.25V Bipolar Reference
6
LT1009 Series
Dimensions in inches (millimeters) unless otherwise noted.
PACKAGE DESCRIPTION
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H Package
2-Lead and 3-Lead TO-46 Metal Can
(LTC DWG # 05-08-1340)
0.050
(1.27)
BSC
0.060 ± 0.005
(1.524± 0.127)
DIA
0.90
(2.286)
NOM
0.180 ± 0.005
(4.572 ± 0.127)
0.180 ± 0.005
(4.572 ± 0.127)
0.500
(12.70)
MIN
0.050
(1.270)
MAX
UNCONTROLLED
LEAD DIMENSION
0.016 ± 0.003
(0.406 ± 0.076)
5°
NOM
0.015 ± 0.002
(0.381 ± 0.051)
0.060 ± 0.010
(1.524 ± 0.254)
10° NOM
0.140 ± 0.010
(3.556 ± 0.127)
Z3 (TO-92) 1098
Z Package
3-Lead Plastic TO-92 (Similar to TO-226)
(LTC DWG # 05-08-1410)
0.016 – 0.021**
(0.406 – 0.533)
DIA
0.025
(0.635)
MAX
0.085 – 0.105
(2.159 – 2.667)
0.500
(12.700)
MIN
0.178 – 0.195
(4.521 – 4.953)
0.209 – 0.219
(5.309 – 5.537) 0.100
(2.540)
TYP
45°
H02/03(TO-46) 1098
0.050
(1.270)
TYP
0.050
(1.270)
TYP
0.028 – 0.048
(0.711 – 1.219)
0.036 – 0.046
(0.914 – 1.168)
FOR 3-LEAD PACKAGE ONLY
REFERENCE
PLANE *
LEAD DIAMETER IS UNCONTROLLED BETWEEN THE REFERENCE PLANE
AND 0.045" BELOW THE REFERENCE PLANE
FOR SOLDER DIP LEAD FINISH, LEAD DIAMETER IS 0.016 – 0.024
(0.406 – 0.610)
*
**
PIN 1
7
LT1009 Series
S8 Package
8-Lead Plastic Small Outline (Narrow 0.150)
(LTC DWG # 05-08-1610)
Dimensions in inches (millimeters) unless otherwise noted.
PACKAGE DESCRIPTION
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0.016 – 0.050
(0.406 – 1.270)
0.010 – 0.020
(0.254 – 0.508)× 45°
0°– 8° TYP
0.008 – 0.010
(0.203 – 0.254)
SO8 1298
0.053 – 0.069
(1.346 – 1.752)
0.014 – 0.019
(0.355 – 0.483)
TYP
0.004 – 0.010
(0.101 – 0.254)
0.050
(1.270)
BSC
1234
0.150 – 0.157**
(3.810 – 3.988)
8765
0.189 – 0.197*
(4.801 – 5.004)
0.228 – 0.244
(5.791 – 6.197)
DIMENSION DOES NOT INCLUDE MOLD FLASH. MOLD FLASH
SHALL NOT EXCEED 0.006" (0.152mm) PER SIDE
DIMENSION DOES NOT INCLUDE INTERLEAD FLASH. INTERLEAD
FLASH SHALL NOT EXCEED 0.010" (0.254mm) PER SIDE
*
**
Information furnished by Linear Technology Corporation is believed to be accurate and reliable.
However, no responsibility is assumed for its use. Linear Technology Corporation makes no represen-
tation that the interconnection of its circuits as described herein will not infringe on existing patent rights.
8
LT1009 Series
1009sfa LT/TP 0200 2K REV A • PRINTED IN USA
LINEAR TECHNOLOGY CORPORATION 1985
LT1009
1k
V
IN
≥ 6V
20µF
2.5V
10k
1k10k
100k
1µF
6
4
2
3
7
1009 TA06
–
+
LT1001C
+
20µF
+
TYPICAL APPLICATION
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Low Noise 2.5V Buffered Reference
RELATED PARTS
PART NUMBER DESCRIPTION COMMENTS
LT1019 Precision Series Reference Bandgap, 0.05%, 5ppm/°C
LT1236 Precision Series Reference 5V and 10V Zener-Based 5ppm/°C, SO-8 Package
LTC®1798 Micropower Low Dropout Series Reference 0.15% Max, 6.5µA Supply Current
LT1460 Micropower Precision Series Reference Bandgap, 130µA Supply Current 10ppm/°C, Available in SOT-23
LT1634 Micropower Precision Shunt Voltage Reference Bandgap 0.05%, 10ppm/°C, 10µA Supply Current
LT1461 Micropower Precision Series Reference 0.04% Max, 3ppm/°C Max, 35µA Supply Current
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900
●
FAX: (408) 434-0507
●
www.linear-tech.com
