SC192

更新时间： 2024-10-01 04:05:31

品牌	Logo	应用领域
商升特 - SEMTECH		转换器
页数	文件大小	规格书
15页	261K
描述
Synchronous Buck Converter with Integrated Power Devices

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SC192 数据手册

SC192

Synchronous Buck Converter

with Integrated Power Devices

POWER MANAGEMENT

Description

Features

2.7V to 7V Input Range

The SC192 is a synchronous step-down converter with

integrated power devices designed for battery operated Output Adjustable from 0.75V to Vin

systems. The internal power switches reduce system

Fixed Frequency or PSAVE for Maximum

size and cost. In addition, an efficiency of 95% can be

Efficiency Over Wide Load Current Range

achieved for significant line and load ranges. The SC192 700mA Guaranteed Output Current

is designed for single-cell Li-Ion battery applications, but

also performs well in fixed 3.3V or 5V input circuits.

No Schottky Diode Required

35μA Quiescent Current

100% Duty Cycle in Dropout

95% Efficiency

Fast Transient Response

Over Temperature Protection

Space-saving Micro Lead-Frame Package

MLPD-10 3x3

The SC192 has a flexible clocking scheme. It can be

synchronized to an external oscillator, fixed to the inter-

nal oscillator, or allowed to modulate the frequency dur-

ing light loads (PSAVE) for maximum battery life, by the

method called pulse frequency modulation (PFM). Shut-

down places the switches in a high impedance state and

turns off all control circuitry to achieve a typical quies-

cent current of 0.1μA.

Applications

Cell Phones

Cordless Phones

Line and load regulation is to +/-0.5% of the output volt-

age. The internal MOSFET switches provide >1A peak

current to provide a DC output of at least 700mA.

Grounding the ILIM pin reduces the current limit by half.

Notebook and Subnotebook Computers

PDAs and Mobile Communicators

1 Li-Ion or 3 NiMH/NiCd Powered Devices

The SC192 can achieve 100% duty cycle for excellent

low dropout performance and comes in a tiny MLPD-10,

3 x 3 package having a maximum height of 1mm.

Typical Application Circuit

SC192

Vout = 0.75V to Vin

Vin = 2.7V to 7V

VIN

ADJ

ILIM

PGND

SYNC/PWM

COMP

GND

Revision 8, March 26, 2007

www.semtech.com

12 3 4 5 6 7...15

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SC194B	SEMTECH	获取价格	Selectable 3.6V/3.3V/3.0V/2.5V 1A Synchronous Buck Converter
SC194BEVB	SEMTECH	获取价格	Selectable 3.6V/3.3V/3.0V/2.5V 1A Synchronous Buck Converter
SC194BMLTRT	SEMTECH	获取价格	Selectable 3.6V/3.3V/3.0V/2.5V 1A Synchronous Buck Converter
SC195	SEMTECH	获取价格	3.5MHz, 500mA Synchronous Step Down DC-DC Regulator