Datasheet > ATL432B_15

ATL432B_15

更新时间： 2024-09-18 01:16:31

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德州仪器 - TI		/
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ATL43x 2.5-V Low Iq Adjustable Precision Shunt Regulator

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ATL431, ATL432

SLVSCV5C –MARCH 2015–REVISED SEPTEMBER 2015

ATL43x 2.5-V Low Iq Adjustable Precision Shunt Regulator

1 Features

3 Description

The ATL431 and ATL432 are three-terminal

•

Adjustable Regulated Output of 2.5 V to 36 V

Very-Low Operating Current

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 Vref (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.

–

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 ATL43xB

1% for ATL43xA

•

Typical Temperature Drift

The ATL43x has > 20x improvement cathode current

range over it's TL43x predecessor. It also is stable

with a wider range of load capacitance types and

values.

–

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

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 good stability over the entire

temperature range.

Low Output Impedance of 0.3 Ω (Max)

2 Applications

•

Secondary Side Regulation in Flyback SMPSs

Industrial, Computing, Consumer, and Portables

Adjustable Voltage and Current Referencing

Power Management

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.

Power Isolation

Device Information⁽¹⁾

Zener Replacement

PART NUMBER

ATL431

ATL432

PACKAGE

BODY SIZE (NOM)

SOT (3)

2.90 mm × 1.60 mm

(1) For all available packages, see the orderable addendum at

the end of the data sheet.

Simplified Schematic

Stability Region for V_KA= 15.0 V

2000

Input

1000

ref

STABLE

100

0.0001

0.001

0.01

C_KA(PF)

0.1

D001

An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,

intellectual property matters and other important disclaimers. PRODUCTION DATA.

12 3 4 5 6 7...26

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与ATL432B_15相关器件

型号	品牌	获取价格	描述	数据表
ATL432BIDBZR	TI	获取价格	2.5V 精密可编程并联稳压器 \| DBZ \| 3 \| -40 to 85
ATL432BQDBZR	TI	获取价格	2.5V 精密可编程并联稳压器 \| DBZ \| 3 \| -40 to 125
ATL432LI	TI	获取价格	高带宽、低 IQ 可编程并联稳压器（引脚排列：RKA）
ATL432LIAIDBZR	TI	获取价格	高带宽、低 IQ 可编程并联稳压器（引脚排列：RKA） \| DBZ \| 3 \| -40 t
ATL432LIAQDBZR	TI	获取价格	高带宽、低 IQ 可编程并联稳压器（引脚排列：RKA） \| DBZ \| 3 \| -40 t
ATL432LIAQDBZRQ1	TI	获取价格	汽车类高带宽低 IQ 可编程并联稳压器（引脚排列：RKA） \| DBZ \| 3 \| -40
ATL432LIBIDBZR	TI	获取价格	高带宽、低 IQ 可编程并联稳压器（引脚排列：RKA） \| DBZ \| 3 \| -40 t
ATL432LIBQDBZR	TI	获取价格	高带宽、低 IQ 可编程并联稳压器（引脚排列：RKA） \| DBZ \| 3 \| -40 t
ATL432LIBQDBZRQ1	TI	获取价格	汽车类高带宽低 IQ 可编程并联稳压器（引脚排列：RKA） \| DBZ \| 3 \| -40
ATL432LI-Q1	TI	获取价格	汽车类高带宽低 IQ 可编程并联稳压器（引脚排列：RKA）

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