Datasheet > SC1402ISS.TR

SC1402ISS.TR

更新时间： 2023-01-02 19:47:14

品牌	Logo	应用领域
商升特 - SEMTECH		光电二极管
页数	文件大小	规格书
18页	270K
描述
Switching Controller, Current-mode, 1A, 330kHz Switching Freq-Max, PDSO28, MO-150AH, SSOP-28

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SC1402ISS.TR 数据手册

Multi-Output, Low-Noise Power Supply

Controller for Notebook Computers

SC1402

TEL:805-498-2111 FAX:805-498-3804 WEB:http://www.semtech.com

December 15, 2000

DESCRIPTION

FEATURES

•= 6V to 30V Input range

The SC1402 is pin compatible with the MAX1632 with

improved load regulation performance. The SC1402 is

a multiple-output power supply controller designed to

power logic supply components in battery operated

systems. The SC1402 utilizes synchronous rectified

buck topologies to generate two voltages, (3.3V and

5V) with up to 95% efficiency. It also provides two lin-

ear regulators for system housekeeping functions. The

12V linear regulator output is generated from a coupled

inductor of the 5V switching regulator.

•= 3.3V and 5V dual synchronous rectified outputs

•= Fixed frequency or PSAVE for maximum efficiency

over wide load current range

•= 5V/50mA linear regulator

•= 12V/120mA linear regulator

•= Precision 2.5V reference output

•= Programmable power-up sequence

•= Power good output (RESET)

•= Output over current protection

•= Output over voltage protection

•= Output under voltage shut down

•= 4µA typical shut down current

•= 7mW typical quiescent power

Control functions include: power up sequencing, soft

start, power-good signaling, automatic bootstrapping

for high side MOSFETs, and frequency synchroniza-

tion. An internal precision 2.5V reference ensures ±2%

output voltage. The internal oscillator can be adjusted

to 200kHz, 300kHz or synchronized to an external

clock. The MOSFET drivers provide 1A peak drive

current for fast MOSFET switching.

APPLICATIONS

•= Notebook and subnotebook computers

•= PDAs and Mobile communicators

•= Desktop DC-DC converters

The SC1402 includes a PSAVE enable input to select

a pulse skipping mode for high efficiency or a fixed fre-

quency mode for low noise operation.

ORDERING INFORMATION:

DEVICE

PACKAGE⁽¹⁾

TEMP. (T_A)

SC1402ISS

SSOP-28

-40 - +85°C

Note:

(1) Only available in tape and reel packaging. (Suffix ‘.TR’).

TYPICAL APPLICATION CIRCUIT

NEWBURY PARK CA 91320

652 MITCHELL ROAD

12 3 4 5 6 7...18

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与SC1402ISS.TR相关器件

型号	品牌	获取价格	描述	数据表
SC1402ISS.TRT	SEMTECH	获取价格	Switching Controller, Current-mode, 1A, 330kHz Switching Freq-Max, PDSO28, MO-150AH, SSOP-
SC1402ISST	SEMTECH	获取价格	Switching Controller, Current-mode, 0.2A, 330kHz Switching Freq-Max, PDSO28, SSOP-28
SC1402ISSTR	SEMTECH	获取价格	Switching Controller, Current-mode, 330kHz Switching Freq-Max, PDSO28, MO-150AH, SSOP-28
SC1403	SEMTECH	获取价格	Mobile Multi-Output PWM Controller with Virtual Current SenseTM
SC1403_04	SEMTECH	获取价格	Mobile Multi-Output PWM Controller with Lossless Current Sense
SC1403ITSTR	SEMTECH	获取价格	Mobile Multi-Output PWM Controller with Virtual Current SenseTM
SC1403ITSTRT	SEMTECH	获取价格	Mobile Multi-Output PWM Controller with Lossless Current Sense
SC1404	SEMTECH	获取价格	Mobile Multi-Output PWM Controller with Virtual Current Sense
SC1404_05	SEMTECH	获取价格	Mobile Multi-Output PWM Controller with Virtual Current SenseTM
SC1404ISSTR	SEMTECH	获取价格	Mobile Multi-Output PWM Controller with Virtual Current Sense

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