Standard Power
Data Sheet
Rev. 1.01, 2009-10-19
IFX27001
Linear Voltage Regulator
IFX27001TFV15
IFX27001TFV18
IFX27001TFV26
IFX27001TFV33
PG-TO252-3
Data Sheet 2 Rev. 1.01, 2009-10-19
Linear Voltage Regulator
IFX27001
Type Package Marking
IFX27001TFV15 PG-TO252-3 2700115
IFX27001TFV18 PG-TO252-3 2700118
IFX27001TFV26 PG-TO252-3 2700126
IFX27001TFV33 PG-TO252-3 2700133
IFX27001TFV50 PG-TO252-3 2700150
IFX27001TFV PG-TO252-3 27001V
1Overview
Features
• 1.5V, 1.8V, 2.6V, 3.3 V, 5.0V or Adj. output voltage
• 1.0 A output current
• Low dropout voltage, 1 V (typ.)
• Short circuit protection
• Overtemperature protection
• Input Votlage up to 40 V
• Wide temperature range of Tj = -40 to 125 °C
• Green Product (RoHS compliant)
Applications
• Manufacturing Automation
• Appliances
• HDTV Televisions
• Game Consoles
• Network Routers
For automotive and transportation applications, please refer to the Infineon TLE and TLF voltage regulator series
Description
The IFX27001 is a monolithic integrated NPN type voltage regulator that can supply loads up to 1.0 A. The chip
is housed in a surface mount PG-TO252-3 package (DPAK). It is designed to supply microprocessor systems or
other loads under the severe conditions and therefore it is equipped with additional protection against overload,
short circuit and overtemperature.
An large input voltage VI in the range of (VQ + VDR) < VI < 40 V is regulated to VQ. The dropout voltage VDR ranges
from 1.1 V to 1.4 V depending on the load current level.
The device operates in the temperature range of Tj = -40 to 125 °C..
IFX27001
Block Diagram
Data Sheet 3 Rev. 1.01, 2009-10-19
2 Block Diagram
Figure 1 Block Diagram for Fixed Output Voltage (1.5V, 1.8V, 2.6V, 3.3V, 5.0V)
Figure 2 Block Diagram for Adjustable Output Voltage
AES02840
Control
with
Overtemperature
Protection;
Overcurrent
Protection
IQ
Internal
Reference
GND
AES02839
Control
with
Overtemperature
Protection;
Overcurrent
Protection
IQ
Internal
Reference
Adjust
Data Sheet 4 Rev. 1.01, 2009-10-19
IFX27001
Pin Configuration
3 Pin Configuration
3.1 Pin Assignment
Figure 3 Pin Configuration (top view)
3.2 Pin Definitions and Functions
Table 1 Pin Definitions and Functions Fixed Output Voltage Versions
Pin No. Symbol Function
1GNDGround
2, Tab Q Output; Connect a capacitor CQ≥10 µF with ESR ≤ 10 Ω between pin Q and GND
Connect to heatsink area.
3I Input
Table 2 Pin Definitions and Functions Adjustable Output Version
Pin No. Symbol Function
1ADJAdjust; defines output voltage by external voltage divider between Q, ADJ and GND.
2, Tab Q Output; the output voltage is defined by the external voltage divider between Q, Adjust and
Ground.
Connect a capacitor CQ≥10 µF with ESR ≤ 10 Ω between pin Q and GND
Connect to heatsink area.
3I Input
AEP02817
GND
1
Q
I
Q
AEP02821
ADJ
1
Q
I
Q
Fixed Output
Voltage Version
Adjustable Output
Voltage Version
IFX27001
General Product Characteristics
Data Sheet 5 Rev. 1.01, 2009-10-19
4 General Product Characteristics
4.1 Absolute Maximum Ratings
Note: Stresses above the ones listed here may cause permanent damage to the device. Exposure to absolute
maximum rating conditions for extended periods may affect device reliability.
Note: Integrated protection functions are designed to prevent IC destruction under fault conditions described in the
data sheet. Fault conditions are considered as “outside” normal operating range. Protection functions are
not designed for continuous repetitive operation.
Absolute Maximum Ratings1)
Tj= -40 °C to 150 °C; all voltages with respect to ground, (unless otherwise specified)
1) not subject to production test, specified by design
Pos. Parameter Symbol Limit Values Unit Test Condition
Min. Max.
Input I
4.1.1 Voltage VI-0.3 40 V –
Input - Output Voltage Differential (Applies to Adjustable Output Version Only)I
4.1.2 Voltage VI - VQ-0.3 40 V –
Output Q
4.1.3 Voltage VQ-0.3 40 V –
Temperature
4.1.4 Junction temperature Tj-40 150 °C–
4.1.5 Storage temperature Tstg -50 150 °C–
ESD Susceptibility
4.1.6 ESD Absorption VESD,HBM -2 2 kV Human Body Model
(HBM)2)
2) ESD susceptibility Human Body Model “HBM” according to AEC-Q100-002 - JESD22-A114
4.1.7 VESD,CDM -500 500 V Charge Device
Model (CDM)3)
3) ESD susceptibility Charged Device Model “CDM” according to ESDA STM5.3.1
4.1.8 -750 750 V Charge Device
Model (CDM)3) at
corner pins
Data Sheet 6 Rev. 1.01, 2009-10-19
IFX27001
General Product Characteristics
4.2 Functional Range
Note: Within the functional or operating range, the IC operates as described in the circuit description. The electrical
characteristics are specified within the conditions given in the Electrical Characteristics table.
4.3 Thermal Resistance
Note: This thermal data was generated in accordance with JEDEC JESD51 standards. For more information, go
to www.jedec.org.
Pos. Parameter Symbol Limit Values Unit Remarks
Min. Max.
4.2.1 Input voltage VIVI + VDR 40 V
4.2.2 Junction temperature Tj-40 125 °C–
Pos. Parameter Symbol Limit Values Unit Conditions
Min. Typ. Max.
PG-TO252-3
4.3.1 Junction to Case1)
1) Not subject to production test, specified by design.
RthJC – 4 – K/W measured to heat
slug
4.3.2 Junction to Ambient1) RthJA –27–K/W
2)
2) Specified RthJA value is according to Jedec JESD51-2,-5,-7 at natural convection on FR4 2s2p board; The Product
(Chip+Package) was simulated on a 76.2 x 114.3 x 1.5 mm³ board with 2 inner copper layers (2 x 70µm Cu, 2 x 35µm Cu).
Where applicable a thermal via array under the exposed pad contacted the first inner copper layer.
4.3.3 RthJA – 57 – K/W 300 mm² heatsink
area3)
3) Specified RthJA value is according to Jedec JESD 51-3 at natural convection on FR4 1s0p board; The Product
(Chip+Package) was simulated on a 76.2 × 114.3 × 1.5 mm3 board with 1 copper layer (1 x 70µm Cu).
4.3.4 RthJA – 42 – K/W 600 mm² heatsink
area3)
IFX27001
Electrical Characteristics
Data Sheet 7 Rev. 1.01, 2009-10-19
5 Electrical Characteristics
5.1 Electrical Characteristics Voltage Regulator
Table 3 Electrical Characteristics IFX27001TFV DV (adjustable output voltage)
-40 °C<Tj<125°C; VI - VQ = 13.5 V, IQ = 10 mA; unless otherwise specified
Parameter Symbol Limit Values Unit Measuring Conditions
min. typ. max.
Reference voltage VREF 1)
1) VREF = VQ–VADJ
1.20 1.25 1.30 V –
Line regulation ΔVQ– 0.5 1.50 % 2)
2) Related to VQ, measured at constant junction Temperature
3 V ≤ (VI – VQ) ≤ 40 V
Load regulation ΔVQ–0.20.4%
2) 10 mA ≤ IQ ≤ 800 mA; 4)
VI = 3.0 V; VQ = VREF
– 0.25 0.5 % 2) 10 mA ≤ IQ ≤ 1.0 A; 4)
VI = 3.0 V; VQ = VREF
Dropout voltage VDR – 1.00 1.20 V IQ=100 mA 3)
3) Dropout voltage measured when the output voltage has dropped 100 mV from the nominal value
obtained at VQ=V
REF.
– 1.05 1.30 V IQ=500 mA 3)
– 1.10 1.35 V IQ=800 mA 3)
– 1.30 1.40 V IQ=1.0A
3)
Current consumption
Iq=II–IQ
Iq– 100 120 μAIQ=10mA;
Adjust current IADJ –75120μAIQ=10mA
Adjust current change ΔIADJ –2 5μAIQ=10mA
3 V ≤ (VI – VQ) ≤ 40 V 4)
4) Constant Junction Temperature
–2 5μA10 mA ≤ IQ ≤ 200 mA;
VI - VQ= 3 V 4)
Temperature stability – – 0.6 – % 5)
5) Not subject to production test - specified by design.
Minimum load current 6)
6) Minimum Output Current to maintain regulation
IQ–1 5mAVI < 40 V;
VQ = VREF
Current limit IQmax 1000 – 2200 mA 1.4V < VI - VQ < 18V;
VQ = Vnom -100 mV
50 200 – mA VI = 40 V;
VQ = Vnom -100 mV
Tj = 25 °C
RMS Output Noise – – 30 – ppm ppm of VQ; Tj = 25 °C;
10 Hz ≤ f ≤ 10kHz 5)
Power Supply Ripple Rejection PSRR –65–dBVQ = 10 V, fr = 120 Hz,
Vr=0.5VPP, CADJ = 0 μF 5)
–65–dBVQ = 10 V, fr = 120 Hz,
Vr=0.5VPP, CADJ = 10 μF
5)
Data Sheet 8 Rev. 1.01, 2009-10-19
IFX27001
Electrical Characteristics
Table 4 Electrical Characteristics IFX27001TFV15 DV15 (1.5 V fixed output voltage)
-40 °C<Tj<125°C; VI= 13.5 V, IQ = 10 mA; unless otherwise specified
Parameter Symbol Limit Values Unit Measuring Conditions
min. typ. max.
Output voltage VQ1.45 1.5 1.55 V 10 mA ≤ IQ ≤ 1000 mA;
2.9 V ≤ VI ≤ 16 V
– 1.5 – V 10 mA ≤ IQ ≤ 1000 mA;
16 V ≤ VI ≤ 40 V 1)
1) Device is usable within given range without destruction, but the accuracy of the output voltage can only be guarantied in
the range specified in the line above.
Line regulation ΔVQ– 4.8 22.5 mV 2.9 V ≤ VI ≤ 40 V
Load regulation ΔVQ– 2.6 5.2 mV 10 mA ≤ IQ ≤ 800 mA; 2)
VI = VQnom + VDR
2) Measured at constant junction temperature
– 3.1 6.25 mV 10 mA ≤ IQ ≤ 1.0 A 2)
VI = VQnom + VDR
Dropout voltage VDR – 1.00 1.20 V IQ= 100 mA 3)
3) Dropout voltage measured when the output voltage has dropped 100 mV from the nominal value.
– 1.05 1.30 V IQ= 500 mA 3)
– 1.10 1.35 V IQ= 800 mA 3)
– 1.30 1.40 V IQ=1.0A
3)
Current consumption
Iq=II–IQ
Iq–0.81.6mAIQ=10mA
Temperature stability – – 8.8 – mV 4)
4) Not subject to production test - specified by design.
Current limit IQmax 1000 – 2200 mA VI – VQ <18V;
VQ = Vnom - 100 mV
50 200 – mA VI = 40 V;
VQ = Vnom - 100 mV
Tj = 25 °C
RMS Output Noise – – 30 – ppm ppm of VQ, Tj = 25 °C
10 Hz ≤ f ≤ 10 kHz 4)
Power Supply Ripple Rejection PSRR – 65 – dB fr =120Hz, Vr=0.5 VPP,
CADJ = 0 μF 4)
–65–dBfr = 120 Hz, Vr=0.5VPP,
CADJ = 10 μF 4)
IFX27001
Electrical Characteristics
Data Sheet 9 Rev. 1.01, 2009-10-19
Table 5 Electrical Characteristics IFX27001TFV18 DV18 (1.8 V fixed output voltage)
-40 °C<Tj<125°C; VI=13.5V, IQ = 10 mA; unless otherwise specified
Parameter Symbol Limit Values Unit Measuring Conditions
min. typ. max.
Output voltage VQ1.75 1.8 1.85 V 10 mA ≤ IQ ≤ 1000 mA;
3.2 V ≤ VI ≤ 16 V
– 1.8 – V 10 mA ≤ IQ ≤ 1000 mA;
16 V ≤ VI ≤ 40 V 1)
1) Device is usable within given range without destruction, but the accuracy of the output voltage can only be guarantied in
the range specified in the line above.
Line regulation ΔVQ– 7.2 27 mV 3.2 V ≤ VI ≤ 40 V
Load regulation ΔVQ– 3.4 7.6 mV 10 mA ≤ IQ ≤ 800 mA 2)
VI=VQnom + VDR
2) Measured at constant junction temperature
– 4.8 9 mV 10 mA ≤ IQ ≤ 1.0 A 2)
VI=VQnom + VDR
Dropout voltage VDR – 1.00 1.20 V IQ=100 mA 3)
3) Dropout voltage measured when the output voltage has dropped 100 mV from the nominal value.
– 1.05 1.30 V IQ=500 mA 3)
– 1.10 1.35 V IQ=800 mA 3)
– 1.30 1.40 V IQ=1.0A
3)
Current consumption
Iq=II–IQ
Iq–0.81.6mAIQ=10mA
Temperature stability – – 11 – mV 4)
4) Not subject to production test - specified by design.
Current limit IQmax 1000 – 2200 mA VI – VQ < 18V;
VQ = Vnom - 100 mV
50 200 – mA VI = 40 V;
VQ = Vnom - 100 mV
Tj = 25 °C
RMS Output Noise – – 30 – ppm ppm of VQ, Tj = 25 °C
10 Hz ≤ f ≤ 10 kHz 4)
Power Supply Ripple Rejection PSRR –65–dB fr =120Hz; Vr = 0.5 VPP
CADJ = 0 μF 4)
–65–dBfr = 120 Hz; Vr=0.5 VPP,
CADJ = 10 μF 4)
Data Sheet 10 Rev. 1.01, 2009-10-19
IFX27001
Electrical Characteristics
Table 6 Electrical Characteristics IFX27001TFV26 DV26 (2.6 V fixed output voltage)
-40 °C<Tj<125°C; VI=13.5V, IQ = 10 mA; unless otherwise specified
Parameter Symbol Limit Values Unit Measuring Conditions
min. typ. max.
Output voltage VQ2.52 2.60 2.68 V 10 mA ≤ IQ ≤ 1000 mA;
4.0 V ≤ VI ≤ 16 V
–2.60–V 10 mA ≤ IQ ≤ 1000 mA;
16 V ≤ VI ≤ 40 V 1)
1) Device is usable within given range without destruction, but the accuracy of the output voltage can only be guarantied in
the range specified in the line above.
Line regulation ΔVQ– 11 40 mV 4.0 V ≤ VI ≤ 40 V
Load regulation ΔVQ– 5 11 mV 10 mA ≤ IQ ≤ 800 mA; 2)
VI = VQnom + VDR
2) Measured at constant junction temperature
– 7 13 mV 10 mA ≤ IQ ≤ 1.0 A 2)
VI =VQnom + VDR
Dropout voltage VDR – 1.00 1.20 V IQ= 100 mA 3)
3) Dropout voltage measured when the output voltage has dropped 100 mV from the nominal value.
– 1.05 1.30 V IQ= 500 mA 3)
– 1.10 1.35 V IQ= 800 mA 3)
– 1.30 1.40 V IQ=1.0A
3)
Current consumption;
Iq=II–IQ
Iq–0.81.6mAIQ=10mA
Temperature stability – – 16 – mV 4)
4) Not subject to production test - specified by design.
Current limit IQmax 1000 – 2200 mA VI – VQ <18V;
VQ = Vnom - 100 mV
50 200 – mA VI = 40 V;
VQ = Vnom - 100 mV
Tj = 25 °C
RMS Output Noise – – 30 – ppm ppm of VQ, Tj = 25 °C
10 Hz ≤ f ≤ 10 kHz 4)
Power Supply Ripple Rejection PSRR –65–dB fr =120Hz, Vr=0.5 VPP,
CADJ = 0 μF 4)
–65–dBfr = 120 Hz, Vr=0.5VPP,
CADJ = 10 μF 4)
IFX27001
Electrical Characteristics
Data Sheet 11 Rev. 1.01, 2009-10-19
Table 7 Electrical Characteristics IFX27001TFV33 DV33 (3.3 V fixed output voltage)
-40 °C<Tj<125°C; VI=13.5V, IQ = 10 mA; unless otherwise specified
Parameter Symbol Limit Values Unit Measuring Conditions
Min. Typ. Max.
Output voltage VQ3.20 3.3 3.40 V 10 mA ≤ IQ ≤ 1000 mA; 4.7
V ≤ VI ≤ 16 V
–3.3–V 10 mA ≤ IQ ≤ 1000 mA ; 16
V ≤ VI ≤ 40 V 1)
1) Device is usable within given range without destruction, but the accuracy of the output voltage can only be guarantied in
the range specified in the line above.
Line regulation ΔVQ– 15 50 mV 4.7 V ≤ VI ≤ 40 V
Load regulation ΔVQ– 6 13 mV 10 mA ≤ IQ ≤ 800 mA 2)
VI = VQnom + VDR
2) Measured at constant junction temperature.
– 8 16 mV 10 mA ≤ IQ ≤ 1.0 A 2)
VI = VQnom + VDR
Dropout voltage VDR – 1.00 1.20 V IQ = 100 mA 3)
3) Dropout voltage measured when the output voltage has dropped 100 mV from the nominal value.
– 1.05 1.30 V IQ = 500 mA 3)
– 1.10 1.35 V IQ = 800 mA 3)
– 1.30 1.40 V IQ = 1.0 A 3)
Current consumption
Iq = II - IQ
Iq–0.81.6mAIQ = 10 mA
Temperature stability – – 20 – mV 4)
4) Not subject to production test - specified by design.
Current limit IQmax 1000 – 2200 mA VI – VQ < 18V;
VQ = Vnom - 100 mV
50 200 – mA VI = 40 V;
VQ = Vnom - 100 mV
Tj = 25 °C
RMS Output Noise – – 30 – ppm ppm of VQ; Tj = 25 °C;
10 Hz ≤ f ≤ 10 kHz 4)
Power Supply Ripple Rejection PSRR –65–dBfr = 120 Hz; Vr = 0.5 Vpp;
CADJ = 0 μF 4)
–65–dBfr = 120 Hz; Vr = 0.5 Vpp;
CADJ = 10 μF 4)
Data Sheet 12 Rev. 1.01, 2009-10-19
IFX27001
Electrical Characteristics
Table 8 Electrical Characteristics IFX27001TFV50 DV50 (5.0 V fixed output voltage)
-40 °C<Tj<125°C; VI=13.5V, IQ = 10 mA; unless otherwise specified
Parameter Symbol Limit Values Unit Measuring Conditions
min. typ. max.
Output voltage VQ4.85 5.00 5.15 V 10 mA ≤ IQ ≤ 1000 mA;
6.4 V ≤ VI ≤ 16 V
–5.00–V10 mA ≤ IQ ≤ 1000 mA;
16V ≤ VI ≤ 40 V 1)
1) Device is usable within given range without destruction, but the accuracy of the output voltage can only be guarantied in
the range specified in the line above.
Line regulation ΔVQ–2075mV6.4V ≤ VI ≤ 40 V
Load regulation ΔVQ– 9 20 mV 10 mA ≤ IQ ≤ 800 mA 2)
VI = VQnom + VDR
2) Measured at constant junction temperature
–1224mV10 mA ≤ IQ ≤ 1.0 A 2)
VI = VQnom + VDR
Dropout voltage VDR – 1.00 1.20 V IQ= 100 mA 3)
3) Dropout voltage measured when the output voltage has dropped 100 mV from the nominal value.
– 1.05 1.30 V IQ= 500 mA 3)
– 1.10 1.35 V IQ= 800 mA 3)
– 1.30 1.40 V IQ=1.0A
3)
Current consumption
Iq=II–IQ
Iq–0.81.6mAIQ=10mA
Temperature stability – – 30 – mV 4)
4) Not subject to production test - specified by design.
Current limit IQmax 1000 – 2200 mA VI – VQ <18V;
VQ = Vnom - 100 mV
50 200 – mA VI = 40 V;
VQ = Vnom - 100 mV
Tj = 25 °C
RMS Output Noise – – 30 – ppm ppm of VQ, Tj = 25 °C
10 Hz ≤ f ≤ 10 kHz 4)
Power Supply Ripple Rejection PSRR –65–dB fr = 120 Hz, Vr=0.5 VPP,
CADJ = 0 μF 4)
–65–dB fr = 120 Hz, Vr=0.5 VPP,
CADJ = 10 μF 4)
IFX27001
Electrical Characteristics
Data Sheet 13 Rev. 1.01, 2009-10-19
Figure 4 Measuring Circuit of fixed output voltage versions and adjustable output voltage version
IFX27001TFV
CI
100 nF
VI
VQ
IGND
CQ
2
1
3
IIIQ
GND
IQ
IFX27001TFV
1
CI
100 nF
VI
R1
VQ
CQ
R2
2
3
IQ
IADJ
IIIQ
ADJ
Data Sheet 14 Rev. 1.01, 2009-10-19
IFX27001
Electrical Characteristics
5.2 Typical Performance Characteristics Voltage Regulator
Current Consumption Iq versus
Junction Temperature TJ
Current Consumption Iq versus
Input Voltage VI
Current Consumption Iq versus
Output Current IQ
Adjust Current IADJ and Reference Voltage VRef
versus Junction Temperature TJ
1_Iq-T j. vsd
1
0.1
0.01
10
I
q
[mA]
-40
T
j[°C]
-20 20 40 80 100
060 140120
V
I
= 13.5V
I
Q
= 10mA
3_Iq-VI . vsd
1
0.1
0.01
10
I
q
[mA]
V
I
= 13.5V
I
Q
= 1mA
0
V
I
[V]
20 30
10 40
I
Q
= 10mA
I
Q
= 500mA
I
Q
= 1000mA
1.5V-Version
1.8V-Version
2.6V-Version
3.3V-Version
5.0V-Version
2_I Q -I Q . VSD
0.0001 0.01 0.10.001 1
I
Q
[A]
Tj
= 150°C
1
0.1
0.01
10
Iq
[mA]
Tj
= 25°C
Tj
= -40°C
V
REF
[V]
4_IADJ_TJ.VS D
1.242
1.24
1.238
1.244
I
ADJ
V
REF
I
Q
=10mA
1.248
-40
T
j
[°C]
-20 20 40 80 100
060 140120
I
ADJ
[µA ]
73
72
71
74
76
701.236
IFX27001
Electrical Characteristics
Data Sheet 15 Rev. 1.01, 2009-10-19
Output Voltage VQ versus
Input Voltage VI
Power Supply Ripple Rejection versus
Frequency
Stability Region: Equivalent Serial Resistor ESR
versus Output Current IQ
Power Supply Ripple Rejection versus
Frequency
0
V
I
[V]
20 30
11_VI -VQ . vsd
10 40
Ta
= 25 °C
IQ
= 500mA
VQ
[V]
3.00
2.00
1.00
4.00
IQ
= 10mA
1.5V-Version
1.8V-Version
2.6V-Version
3.3V-Version
5.0V-Version
6.00
IQ
= 100mA
IQ
= 1000mA
10
f [Hz]
10k
PSRR
[dB]
13_PSRR.VSD
70
60
100 1k 100k
90
40
50
V
RIPPLE
= 0.5 V
V
IN
= 13.5 V
C
ADJ
= 10 µF Tantalum
T
a
= 25 °C
I
Q
= 1000 mA
I
Q
= 500 mA
I
Q
= 250 mA
I
Q
= 125 mA
I
Q
= 10 mA
12_ESR-IQ.VSD
10
1
0.1
ESR
CQ
[Ω]
0.1
I
Q
[mA]
10 100
1
1000
100
1000
C
Q
= 10µF
T
j
= -40...150°C
V
I
= 6...25V
Stable
Region
C
Q
= 2.2µF
T
j
= -40...150°C
V
I
= 6...25V
10
f
[Hz]
10k
PSRR
[dB]
13_PSRR.VSD
70
60
100 1k 100k
90
40
50
V
RIPPLE
= 0.5 V
V
IN
= 13.5 V
CADJ
= 10 µF Tantalum
T
a
= 25 °C
I
Q
= 1000 mA
I
Q
= 500 mA
I
Q
= 250 mA
I
Q
= 125 mA
I
Q
= 10 mA
Data Sheet 16 Rev. 1.01, 2009-10-19
IFX27001
Application Information
6 Application Information
Note: The following information is given as a hint for the implementation of the device only and shall not be
regarded as a description or warranty of a certain functionality, condition or quality of the device.
Figure 5 Application Diagram
Application Hints
Adjustable Version
At the fixed voltage IFX27001 devices, the output voltage is divided internally and compared to an internal
reference of 1.25 V typical. The regulation loop controls the output voltage to achieve the output voltage of 5 V,
3.3 V, 2.6 V, 1.8V or 1.5V. The variable version compares the voltage difference between the adjust pin ADJ and
the output pin Q to the internal reference of typically 1.25 V. The output voltage is adjusted by an external voltage
divider between Q, ADJ and GND and calculates:
AES02815
CI1CI2
VI
I
CQ2
VQ
Q
ADJ
R2CADJ
R1
IFX27001TFV
VQ - VADJ = VREF
32
1
IADJ
CI1CI2
VI
CQ2
VQ
IFX27001TFV
IQ
GND
32
1
VQVREF 1R2
R1
-----+
⎝⎠
⎛⎞
IADJ R2
×+×=
IFX27001
Application Information
Data Sheet 17 Rev. 1.01, 2009-10-19
For the variable regulator IFX27001TFV, a minimum load current of 5 mA is necessary in order to keep the output
voltage regulated. If the application does not assure this minimum load requirement, the output voltage divider
should be dimensioned sufficiently
low-ohmic: R1 ≤240 Ω.
For the variable voltage type an additional decoupling a capacitor CADJ at the adjust pin improves the ripple
rejection ratios. Placing CADJ requires an increased output capacitance of CQ≥22 µF.
Output
The output current limitation is reduced as a function of the input voltage for high input voltages above 25 V.
The IFX27001 requires a 10 µF output capacitor with 0.1 Ω ≤ ESR ≤ 10 Ω for the stability of the regulation loop.
At the input of the regulator a capacitor is necessary for compensation of line influences. A series diode should be
used to eliminate negative voltages from the input. As a minimum, a 100 nF ceramic input capacitor should be
used. If the regulator is used in an environment with long input lines, an input capacitance of 10 µF is
recommended.
Data Sheet 18 Rev. 1.01, 2009-10-19
IFX27001
Package Outlines
7 Package Outlines
Figure 6 PG-TO252-3
Green Product (RoHS compliant)
To meet the world-wide customer requirements for environmentally friendly products and to be compliant with
government regulations the device is available as a green product. Green products are RoHS-Compliant (i.e
Pb-free finish on leads and suitable for Pb-free soldering according to IPC/JEDEC J-STD-020).
5.4
±0.1
-0.05
6.5
+0.15
A
±0.5
9.98
6.22 -0.2
1±0.1
±0.15
0.8
0.15 MAX.
±0.1
per side 0.75
2.28
4.57
+0.08
-0.04
0.5
2.3
-0.10
+0.05
B
0.51 MIN.
+0.08
-0.04
0.5
0...0.15
B
A0.25
M
0.1
All metal surfaces tin plated, except area of cut.
3x
(5)
(4.24)
-0.01
+0.20
0.9
B
For further information on packages, please visit our website:
http://www.infineon.com/packages.Dimensions in mm
IFX27001
Revision History
Data Sheet 19 Rev. 1.01, 2009-10-19
8 Revision History
Revision Date Changes
1.01 2009-10-19 Coverpage changed
Overview page: Inserted reference statement to TLE/TLF series.
1.0 2009-04-28 Initial Release
Edition 2009-10-19
Published by
Infineon Technologies AG
81726 Munich, Germany
© 2009 Infineon Technologies AG
All Rights Reserved.
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