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SC1452XIMSTRT

更新时间： 2024-11-16 02:57:59

品牌	Logo	应用领域
商升特 - SEMTECH		稳压器
页数	文件大小	规格书
15页	288K
描述
Dual 150mA LDO Regulator with Programmable Reset

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中文翻译

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SC1452XIMSTRT 数据手册

SC1452

Dual 150mA LDO Regulator

with Programmable Reset

POWER MANAGEMENT

Features

Description

The SC1452 is a state of the art device intended to

provide maximum performance and flexibility in battery

operated systems. It has been designed specifically to

fully support a single Li-Ion battery and its external charger

voltages.

Up to 150mA per regulator output

Low quiescent current (130µA typical with both

outputs at 150mA)

Low dropout voltage

Wide selection of output voltages

Stable operation with ceramic caps

Tight load and line regulation

Current and thermal limiting

Reverse input polarity protection

<1µA off-mode current

The SC1452 contains two independently enabled, 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 which are

designed to provide an initial tolerance of ±1% and ±2%

over temperature.

Logic controlled enable

Active low resets valid for V_INdown to 0V

Programmable reset

Full industrial temperature range

10-Pin MSOP package. Also available in Lead-free,

fully WEEE and RoHS compliant

Each regulator has an associated active-low reset signal

which is asserted when the voltage output declines

below the preset threshold. Once the output recovers,

the reset continues to be asserted (delayed) for a

predetermined time, 50ms for reset A and 150ms for

reset B. In the case of regulator B, the delay time may be

reduced by the addition of an external capacitor.

Applications

Cellular telephones

Palmtop/Laptop computers

Battery-powered equipment

Bar code scanners

SMPS post regulator/dc to dc modules

High efficiency linear power supplies

DSP supplies

The SC1452 has a bypass pin to enable the user to

capacitively decouple the bandgap reference for very low

output noise (down to 50µVrms).

The devices utilize CMOS technology to achieve very low

operating currents (typically 130uA with both

outputs supplying 150mA). The dropout voltage is

typically 155mV at 150mA, helping to prolong battery

life. In addition, the devices are guaranteed to provide

400mA of peak current for applications which require

high initial inrush current. They have been designed to

be used with low ESR ceramic capacitors to save cost

and PCB area.

The SC1452 comes in the low profile 10-lead MSOP

package.

Typical Application Circuit

3.0V OUT

2.5V OUT

3.3V IN

OUTA

OUTB

GND

ENA

ENABLE OUTPUT A

BYP

RESET A

RESET B

ENABLE OUTPUT B

RSTA

RSTB

ENB

DLYB

SC1452FIMS

COUTA

1uF

COUTB

1uF

CBYP

10nF

CDLYB

10nF

CIN

1uF

Revision: September 20, 2006

www.semtech.com

12 3 4 5 6 7...15

中文翻译

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与SC1452XIMSTRT相关器件

型号	品牌	获取价格	描述	数据表
SC1453	SEMTECH	获取价格	150mA Ultra Low Dropout Regulator with Low Noise Bypass
SC1453_06	SEMTECH	获取价格	150mA Ultra Low Dropout Regulator with Low Noise Bypass
SC1453_08	SEMTECH	获取价格	150mA Ultra Low Dropout Regulator with Low Noise Bypass
SC1453-1.5ISKTR	SEMTECH	获取价格	150mA Ultra Low Dropout Regulator with Low Noise Bypass
SC1453-1.5ISKTRT	SEMTECH	获取价格	Fixed Positive LDO Regulator, 1.5V, 0.27V Dropout, PDSO5, SOT-23, 5 PIN
SC1453-1.8ISKTR	SEMTECH	获取价格	150mA Ultra Low Dropout Regulator with Low Noise Bypass
SC1453-1.8ISKTRT	SEMTECH	获取价格	Fixed Positive LDO Regulator, 1.8V, 0.27V Dropout, PDSO5, SOT-23, 5 PIN
SC1453-2.5ISKTR	SEMTECH	获取价格	150mA Ultra Low Dropout Regulator with Low Noise Bypass
SC1453-2.5ISKTRT	SEMTECH	获取价格	Fixed Positive LDO Regulator, 2.5V, 0.27V Dropout, PDSO5, SOT-23, 5 PIN
SC1453-2.7ISKTR	SEMTECH	获取价格	150mA Ultra Low Dropout Regulator with Low Noise Bypass

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