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SC1454XIMSTRT

更新时间： 2024-11-06 03:02:35

品牌	Logo	应用领域
商升特 - SEMTECH		稳压器
页数	文件大小	规格书
14页	250K
描述
Dual 150mA Ultra Low Dropout, Low Noise Regulator

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SC1454XIMSTRT 数据手册

SC1454

Dual 150mA Ultra Low

Dropout, Low Noise Regulator

POWER MANAGEMENT

Description

Features

The SC1454 contains two ultra low dropout voltage

regulators (ULDOs). It operates from an input voltage

range of 2.25V to 6.5V, and a wide variety of output

voltage options are available. One ULDO has a fixed

output, and the other is either fixed (SETA pin grounded)

or adjustable using external resistors. Each ULDO has an

independent enable pin.

Up to 150mA per regulator output

Low quiescent current

Low dropout voltage

Stable operation with ceramic caps

Very low 50µV_RMSoutput noise

Wide selection of output voltages

Tight load and line regulation

Current and thermal limiting

Reverse input polarity protection

<1.5uA off-mode current

The SC1454 has a bypass pin to enable the user to

capacitively decouple the bandgap reference for very low

output noise (50µV_RMStypically).

Logic controlled enable

Designed specifically for battery operated systems, the

devices utilize CMOS technology to require very low

operating currents (typically 130µA with both outputs

supplying 150mA). In addition, the dropout voltage is

typically 155mV at 150mA, helping to prolong battery

life further. The devices are designed to provide 400mA

of peak current for applications which require high initial

inrush current.

Applications

Cellular telephones

Palmtop/Laptop computers

Battery-powered equipment

Bar code scanners

SMPS post regulator/dc to dc modules

High efficiency linear power supplies

They have been designed to be used with low ESR

ceramic capacitors to save cost and PCB area.

The SC1454 is available with a wide variety of voltage

options as standard. It comes in the tiny 8 lead MSOP

surface mount package.

Typical Application Circuit

U1 SC1454DIMS

OUTPUT A: 3.0V

OUTPUT B: 3.0V

VIN

OUTA

OUTB

GND

ENA

BYP

ENB

ENABLE OUTPUT A

ENABLE OUTPUT B

SETA

1uF

10nF

1uF

U1 SC1454CIMS

OUTPUT A: 2.5V

OUTPUT B: 2.8V

VIN

OUTA

OUTB

GND

ENA

BYP

ENB

ENABLE OUTPUT A

100k

ENABLE OUTPUT B

SETA

100k

1uF

10nF

www.semtech.com

Revision: May 4, 2005

12 3 4 5 6 7...14

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与SC1454XIMSTRT相关器件

型号	品牌	获取价格	描述	数据表
SC1456	SEMTECH	获取价格	Dual 150mA ULTRA LOW DROPOUT, LOW NOISE REGULATOR
SC1456_05	SEMTECH	获取价格	Dual 150mA Ultra Low Dropout, Low Noise Regulator
SC14562.8IMS.TRT	SEMTECH	获取价格	Fixed Positive LDO Regulator, 2.8V, 0.24V Dropout, PDSO10, MSOP-10
SC14562.8IMSTRT	SEMTECH	获取价格	Fixed Positive LDO Regulator, 2.8V, 0.24V Dropout, PDSO10, MSOP-10
SC14563.0IMS.TR	SEMTECH	获取价格	Fixed Positive LDO Regulator, 3V, 0.24V Dropout, PDSO10, MSOP-10
SC14563.0IMS.TRT	SEMTECH	获取价格	Fixed Positive LDO Regulator, 3V, 0.24V Dropout, PDSO10, MSOP-10
SC14563.0IMSTR	SEMTECH	获取价格	Fixed Positive LDO Regulator, 3V, 0.24V Dropout, PDSO10, MSOP-10
SC14563.0IMSTRT	SEMTECH	获取价格	Fixed Positive LDO Regulator, 3V, 0.24V Dropout, PDSO10, MSOP-10
SC14563.3IMS.TR	SEMTECH	获取价格	Fixed Positive LDO Regulator, 3.3V, 0.24V Dropout, PDSO10, MSOP-10
SC14563.3IMSTR	SEMTECH	获取价格	Fixed Positive LDO Regulator, 3.3V, 0.24V Dropout, PDSO10, MSOP-10

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