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See Technical Specifications

TL431AQDBVRQ1

Automotive adjustable precision shunt regulator (pin layout: KRA)

Manufacturer:

Texas Instruments, Inc
Mfr.Part #:

TL431AQDBVRQ1
Datasheet:

TL431AQDBVRQ1 Datasheet (PDF)
Series:

Automotive, AEC-Q100
Reference Type:

Shunt
Output Type:

Adjustable
Voltage - Output (Min/Fixed):

2.495V
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TL431AQDBVRQ1 General Description

The TL431LI-Q1 / TL432LI-Q1 are pin-to-pin alternatives to TL431-Q1 / TL432-Q1. TL43xLI-Q1 offers better stability, lower temperature drift (VI(dev)), and lower reference current (Iref) for improved system accuracy.

The TL431-Q1 is a three-pin adjustable shunt regulator with specified thermal stability over applicable automotive temperature ranges. The output voltage can be set to any value from V_REF (approximately 2.5 V) to 36 V, with two external resistors (see Figure 28). This device has a typical output impedance of 0.2 Ω. Active output circuitry provides a sharp turnon characteristic, making this device an excellent replacement for Zener diodes in many applications, such as onboard regulation, adjustable power supplies, and switching power supplies.

The TL432-Q1 has exactly the same functionality and electrical specifications as the TL431-Q1 device, but has a different pinout for the DBZ package.

Key Features

Qualified for automotive applications
AEC-Q100 test guidance with the following:
- Device temperature grade 1: –40°C to 125°C ambient operating temperature range
Reference voltage tolerance at 25°C:
- 1% (A Grade)
- 0.5% (B Grade)
Typical temperature drift:
- 14 mV (Q Temp)
Low output noise
0.2-Ω Typical output impedance
Sink-current capability: 1 mA to 100 mA
Adjustable output voltage: V_REF to 36 V

Specifications

Category	Integrated Circuits (ICs)Power Management (PMIC)Voltage Reference	Series	Automotive, AEC-Q100
Reference Type	Shunt	Output Type	Adjustable
Voltage - Output (Min/Fixed)	2.495V	Voltage - Output (Max)	36 V
Current - Output	100 mA	Tolerance	±1%
Temperature Coefficient	-	Noise - 0.1Hz to 10Hz	-
Noise - 10Hz to 10kHz	-	Voltage - Input	-
Current - Supply	-	Current - Cathode	700 µA
Operating Temperature	-40°C ~ 125°C (TA)	Mounting Type	Surface Mount
Base Product Number	TL431