LMV431A

更新时间： 2023-06-19 15:33:43

品牌	Logo	应用领域
德州仪器 - TI		电源电路参考电压源稳压器
页数	文件大小	规格书
27页	1478K
描述
1%、低电压 (1.24V) 可调节精密并联稳压器

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LMV431A 数据手册

LMV431, LMV431A, LMV431B

www.ti.com

SNVS041F –MAY 2004–REVISED MAY 2005

LMV431/LMV431A/LMV431B Low-Voltage (1.24V) Adjustable Precision Shunt Regulators

Check for Samples: LMV431, LMV431A, LMV431B

FEATURES

DESCRIPTION

The LMV431, LMV431A and LMV431B are precision

1.24V shunt regulators capable of adjustment to 30V.

Negative feedback from the cathode to the adjust pin

controls the cathode voltage, much like a non-

inverting op amp configuration (Refer to Symbol and

Functional diagrams). A two resistor voltage divider

terminated at the adjust pin controls the gain of a

1.24V band-gap reference. Shorting the cathode to

the adjust pin (voltage follower) provides a cathode

voltage of a 1.24V.

•

Low Voltage Operation/Wide Adjust Range

(1.24V/30V)

•

0.5% Initial Tolerance (LMV431B)

Temperature Compensated for Industrial

Temperature Range (39 PPM/°C for the

LMV431AI)

•

Low Operation Current (55µA)

Low Output Impedance (0.25Ω)

Fast Turn-On Response

Low Cost

The LMV431, LMV431A and LMV431B have

respective initial tolerances of 1.5%, 1% and 0.5%,

and functionally lends themselves to several

applications that require zener diode type

performance at low voltages. Applications include a

3V to 2.7V low drop-out regulator, an error amplifier

in a 3V off-line switching regulator and even as a

voltage detector. These parts are typically stable with

capacitive loads greater than 10nF and less than

50pF.

APPLICATIONS

•

Shunt Regulator

Series Regulator

Current Source or Sink

Voltage Monitor

Error Amplifier

The LMV431, LMV431A and LMV431B provide

performance at a competitive price.

3V Off-Line Switching Regulator

Low Dropout N-Channel Series Regulator

Connection Diagram

*Pin 1 is not internally connected.

*Pin 2 is internally connected to Anode pin. Pin 2 should be either

floating or connected to Anode pin.

Figure 1. TO-92: Plastic Package

Top View

Figure 2. SOT-23-5

Top View

ANODE

REF

CATHODE

Figure 3. SOT-23-3

Top View

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

All trademarks are the property of their respective owners.

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.

12 3 4 5 6 7...27

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与LMV431A相关器件

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LMV431ACM5	NSC	获取价格	Low-Voltage (1.24V) Adjustable Precision Shunt Regulators
LMV431ACM5	TI	获取价格	Low-Voltage (1.24V) Adjustable Precision Shunt Regulators
LMV431ACM5/NOPB	TI	获取价格	Low-Voltage (1.24V) Adjustable Precision Shunt Regulators
LMV431ACM5X	TI	获取价格	Low-Voltage (1.24V) Adjustable Precision Shunt Regulators
LMV431ACM5X	NSC	获取价格	Low-Voltage (1.24V) Adjustable Precision Shunt Regulators
LMV431ACM5X/NOPB	TI	获取价格	Low-Voltage (1.24V) Adjustable Precision Shunt Regulators
LMV431ACZ	NSC	获取价格	Low-Voltage (1.24V) Adjustable Precision Shunt Regulators
LMV431AIM5	TI	获取价格	Low-Voltage (1.24V) Adjustable Precision Shunt Regulators
LMV431AIM5	NSC	获取价格	Low-Voltage (1.24V) Adjustable Precision Shunt Regulators
LMV431AIM5/NOPB	TI	获取价格	Low-Voltage (1.24V) Adjustable Precision Shunt Regulators

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