Document
Low Voltage(1.24V) Adjustable Precision Shunt Regulator TL432/A/C
FEATURES
z Low Voltage Operation : 1.24 V z Programmable Out Voltage to 18V z Sink Current Capability of 1mA to 100mA z Equivalent full range Temperature Coefficient of
50ppm/℃ z Temperature Compensated for operation
over full rated operating Temperature Range z Low Output Noise Voltage z Moisture Sensitivity Level 3
APPLICATION
z Shunt Regulator z Voltage Monitoring z Current Source and Sink Circuits z Analog & Digital Circuits Requiring Precision References z Low Out Voltage (3.0V to 3.3V) Switching Power Supply
Error Amplifier
TO-92 PKG
3 T O2 P
1
SOT-23 PKG
2
TOP
13
DESCRIPSION
The TL432 is a three-terminal Shunt Voltage Reference providing a highly accuracy 1.24V band-gap reference with 0.5% and 1.0% tolerance. The TL432 thermal stability and wide operating current(100mA) makes is suitable for all variety of applications that are looking for a low cost solution with high performance. The TL432 is an ideal voltage reference in an isolated feed circuit for 3.0V to 3.3V switching mode power supplies.
PIN 1. Reference 2. Anode 3. Cathode
ORDERING INFORMATION
Device
Package
TL432TA
TO-92(Taping)
TL432SF
SOT-23 3L
* Refer to the page 2 for detailed ordering Information,
Absolute Maximum Ratings
(Full operating ambient temperature range applies unless otherwise noted.)
CHARACTERISTIC
Cathode Voltage Cathode Current Range(Continuous) Reference Input Current Range Junction Temperature Range Operating Temperature Range Storage Temperature Range Total Power Dissipation
SYMBOL
VKA IK IREF TJ TOPR TSTG PD
MIN.
MAX.
- 20
- 100
-3
-40 150
-40 125
-65 150
770
UNIT
V mA mA ℃ ℃ ℃ mW
Sep. 2010 – Rev.1.5
-1-
HTC
Low Voltage(1.24V) Adjustable Precision Shunt Regulator TL432/A/C
RECOMMENDED OPERATING CONDITIONS
CHARACTERISTIC
SYMBOL
Cathode Voltage Cathode Current
VKA IK
Ordering Information
VREF
Package Tolerance
Order No.
TO-92
1.24V
SOT-23
0.5% 1% 0.5%
1%
TL432CTA TL432ATA TL432CSF TL432GCSF TL432ASF TL432GASF
MIN.
VREF 0.1
MAX.
18 100
UNIT
V mA
Marking
TL432-C TL432-A
432 432 432 432
Supplied As
Tape Tape Reel Reel Reel Reel
Status
Active Active Active Contact us Active Contact us
Sep. 2010 – Rev.1.5
-2-
HTC
Low Voltage(1.24V) Adjustable Precision Shunt Regulator
FUNCTION BLOCK DIAGRAM
TL432/A/C
REFERENCE
+ -
1.24 VREF
CATHODE REFERENCE (R)
CATHODE (K)
ANODE
ANODE (A)
EQUIVALENT SCHEMATIC
* All component values are nominal.
Sep. 2010 – Rev.1.5
-3-
HTC
Low Voltage(1.24V) Adjustable Precision Shunt Regulator
PIN CONFIGURATION
Marking Side
2
TOP
TL432/A/C
123
TO-92 PKG
PIN DESCRIPTION
Pin No.
1 2 3
Name
Reference Anode Cathode
13
SOT-23 PKG
TO-92 / SOT-23
Function
Reference Voltage Ground
Input Supply Voltage
TL432 ELECTRICAL CHARACTERISTICS
CHARACTERISTIC
SYMBOL
TEST CONDITION
Reference Input Voltage
VREF
VKA =VREF, IK =10mA
TL432C TL432A
Deviation of Reference Input Voltage Ratio of Change in Reference Input .