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ATL432BQDBZR

2.5-V precision programmable shunt regulator

Manufacturer: Texas Instruments, Inc
Mfr.Part #: ATL432BQDBZR
Datasheet: ATL432BQDBZR Datasheet (PDF)
Package/Case: SOT23-3
Product Type: Power Management ICs
RoHS:
Lifecycle: Active
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ATL432BQDBZR General Description

The ATL431 and ATL432 are three-terminal adjustable shunt regulators, with specified thermal stability over applicable automotive, commercial, and industrial temperature ranges. The output voltage can be set to any value between V_ref (approximately 2.5 V) and 36 V, with two external resistors. These devices have a typical output impedance of 0.05 Ω. Active output circuitry provides a very sharp turn-on characteristic, making these devices excellent replacements for Zener diodes in many applications, such as onboard regulation, adjustable power supplies, and switching power supplies.

The ATL43x has > 20x improvement cathode current range over its TL43x predecessor. It also is stable with a wider range of load capacitance types and values.

ATL431 and ATL432 are the exact same parts but with different pinouts and order numbers. The ATL43x is offered in two grades, with initial tolerances (at 25°C) of 0.5%, 1%, for the B and A grade, respectively. In addition, low output drift vs temperature ensures consistent voltage regulation over the entire temperature range.

The ATL43xxI devices are characterized for operation from –40°C to +85°C, and the ATL43xxQ devices are characterized for operation from –40°C to +125°C.

Key Features

Adjustable Regulated Output of 2.5 V to 36 V
Very-Low Operating Current
- I_KA(min)= 35 µA (Max)
- I_REF = 150 nA (Max)
Internally Compensated for Stability
- Stable With No Capacitive Load
Reference Voltage Tolerances at 25°C
- 0.5% for B Grade
- 1% for A Grade
Typical Temperature Drift
- 5 mV (–40°C to +85°C); I Version
- 6 mV (–40°C to +125°C); Q Version
Extended Cathode Current Range 35 µA to 100 mA
Low Output Impedance of 0.3 Ω (Max)

Specifications

Category	Integrated Circuits (ICs)Power Management (PMIC)Voltage Reference	Mfr	Texas Instruments
Series	-	Package	Tape & Reel (TR)Cut Tape (CT)Digi-Reel®
Product Status	Active	Reference Type	Shunt
Output Type	Adjustable	Voltage - Output (Min/Fixed)	2.5V
Voltage - Output (Max)	36 V	Current - Output	100 mA
Tolerance	±0.5%	Temperature Coefficient	82ppm/°C
Noise - 0.1Hz to 10Hz	-	Noise - 10Hz to 10kHz	-
Voltage - Input	-	Current - Supply	-
Current - Cathode	35 µA	Operating Temperature	-40°C ~ 125°C (TA)
Mounting Type	Surface Mount	Package / Case	TO-236-3, SC-59, SOT-23-3
Supplier Device Package	SOT-23-3	Base Product Number	ATL432