SC431CSQTR

更新时间： 2024-01-06 05:37:49

品牌	Logo	应用领域
商升特 - SEMTECH		稳压器
页数	文件大小	规格书
9页	226K
描述
Adjustable Shunt Regulator

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SC431CSQTR 技术参数

生命周期：	Obsolete	Reach Compliance Code：	compliant
风险等级：	7.71	模拟集成电路 - 其他类型：	TWO TERMINAL VOLTAGE REFERENCE
Base Number Matches：	1

SC431CSQTR 数据手册

SC431

Adjustable Shunt Regulator

POWER MANAGEMENT

Description

Features

The SC431 is a three terminal adjustable shunt

regulator with thermal stability guaranteed over

temperature. The output voltage can be adjusted to any

value from 2.5V (V_REF) to 30V with two external

resistors. The SC431 has a typical dynamic output

impedance of 0.25Ω. Active output circuitry provides a

very sharp turn on characteristic, making the SC431 an

excellent replacement for zener diodes.

Wide operating current range 130µA to 150mA

Low dynamic output impedance 0.25 Ω typ.

Trimmed bandgap design + 0.5%

Alternate for TL1431, TL431, LM431 & AS431

Industrial temperature range

Available in SOT-23-3 and SO-8 packages.

Also available in Lead-free, fully WEEE and RoHS

compliant.

The SC431 shunt regulator is available with four

voltage tolerances (0.5%, 1.0% and 2.0% over T_A= -40°C

to +85°C and 0.5% over T_A= -40°C to +125°C) and two

package options (SOT-23-3 and SO-8). This

allows the designer the opportunity to select the

optimum combination of cost and performance for their

application.

Applications

Linear Regulators

Adjustable Supplies

Switching Power Supplies

Battery Operated Computers

Instrumentation

Computer Disk Drives

Typical Application Circuit⁽¹⁾⁽²⁾

Notes:

1) Set V_OUTaccording to the following equation:

V_OUT= V_REF1+

+I_REFR1

2) Choose the value for R as follows:

• The maximum limit for R should be such that the

cathode current, I_Z, is greater than the minimum

operating current (130µA) at V_IN(MIN)

• The minimum limit for R should be such that I_Zdoes

not exceed 150mA under all load conditions, and the

instantaneous turn-on value for I_Zdoes not exceed

200mA. Both of the following conditions must be met:

IN(max)

R_min

≥

(to limit instantaneous turn-on I_Z)

200mA

_IN(max)− V_OUT

R_min

(to limit I_Zunder normal

I_OUT(min)+150mA

operating conditions)

Revision: April 23, 2008

www.semtech.com

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与SC431CSQTR相关器件

型号	品牌	获取价格	描述	数据表
SC431CSQTRT	SEMTECH	获取价格	Adjustable Shunt Regulator
SC431CZ-.5	SEMTECH	获取价格	Two Terminal Voltage Reference, 1 Output, 2.495V, Trim/Adjustable, BIPolar, PBCY3, TO-92,
SC431CZ-.5TA	SEMTECH	获取价格	Two Terminal Voltage Reference, 1 Output, 2.495V, Trim/Adjustable, BIPolar, PBCY3, TO-92,
SC431CZ-.5TR	SEMTECH	获取价格	Two Terminal Voltage Reference, 1 Output, 2.495V, Trim/Adjustable, BIPolar, PBCY3, TO-92,
SC431CZ-1	SEMTECH	获取价格	ADJUSTABLE SHUNT REGULATOR
SC431CZ-1.TA	SEMTECH	获取价格	Two Terminal Voltage Reference, 1 Output, 2.495V, Trim/Adjustable, BIPolar, PBCY3, TO-92,
SC431CZ-1TA	SEMTECH	获取价格	Two Terminal Voltage Reference, 1 Output, 2.495V, Trim/Adjustable, BIPolar, PBCY3, TO-92,
SC431CZ-1TR	SEMTECH	获取价格	暂无描述
SC431CZ-2	SEMTECH	获取价格	ADJUSTABLE SHUNT REGULATOR
SC431CZ-2.TA	SEMTECH	获取价格	Two Terminal Voltage Reference, 1 Output, 2.495V, Trim/Adjustable, BIPolar, PBCY3, TO-92,

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