SC1403ITSTRT datasheet(1/31 Pages) SEMTECH

номер детали	SC1403ITSTRT

подробное описание детали	Mobile Multi-Output PWM Controller with Lossless Current Sense

PDF	31 Pages

Scroll/Zoom	100%

производитель	SEMTECH [Semtech Corporation]

домашняя страница	http://www.semtech.com

Logo

1 / 31 page

1

United States Patent No. 6,377,032

www.semtech.com

SC1403

Mobile Multi-Output PWM Controller

with Lossless Current Sense

POWER MANAGEMENT

Revision 5, April 2004

Description

Features

Applications

Typical Application Circuit

The SC1403 is a multiple-output power supply controller

designed to power battery operated systems. The

SC1403 provides synchronous buck converter control

for two (3.3V and 5V) power supplies. An efficiency of

95% can be achieved for the two supplies. The SC1403

uses Semtech’s proprietary Virtual Current Sense

™ tech-

nology along with external error amplifier compensation

to achieve enhanced stability and DC accuracy over a

wide range of output filter components while maintain-

ing fixed frequency operation. Lossless current sensing

can be used to eliminate current sense resistors and

reduce cost. The SC1403 also provides a 5V linear regu-

lator for system housekeeping. The 5V linear regulator

is derived from the battery; for improved efficiency, the

output is switched to the 5V output when available.

Control functions include power-up sequencing, soft start,

power-good signaling, and frequency synchronization. Line

and load regulation is to +/-1%. The internal oscillator

can be set to 200kHz, 300kHz, or synchronized to an

external clock. The mosfet drivers provide >1A peak

drive current for fast mosfet switching.

The SC1403 includes a PSAVE# input to select pulse skip-

ping mode for high efficiency at light load, or fixed fre-

quency mode for low noise operation.

3.3V and 5V dual synchronous outputs, resistor

programmable to 2.5V

Fixed frequency or PSAVE operation for maximum

efficiency over wide load range

5V / 50mA linear regulator

Virtual Current Sense™ for enhanced stability

Lossless current limiting

Out of phase switching reduces input capacitance

External compensation supports wide range of

output filter components

Programmable power-up sequence

Power Good output

Output overvoltage and overcurrent protection with

output undervoltage shutdown

6µA typical shutdown current

6mW typical quiescent power

Notebook and subnotebook computers

Tablet PCs

Embedded applications

Аналогичный номер детали - SC1403ITSTRT

производитель	номер детали	датащи	подробное описание детали
Semtech Corporation	SC1403ITSTR	567Kb / 30P	Mobile Multi-Output PWM Controller with Virtual Current SenseTM

More results

Аналогичное описание - SC1403ITSTRT

производитель	номер детали	датащи	подробное описание детали
Fairchild Semiconductor	FAN5236	199Kb / 20P	Dual Mobile-Friendly DDR / Dual-output PWM Controller
Intersil Corporation	ISL6224	378Kb / 13P	Single Output Mobile-Friendly PWM Controller December 28, 2004
Semtech Corporation	SC1403	567Kb / 30P	Mobile Multi-Output PWM Controller with Virtual Current SenseTM
Semtech Corporation	SC1404	501Kb / 27P	Mobile Multi-Output PWM Controller with Virtual Current Sense
Fairchild Semiconductor	FAN5236	234Kb / 20P	Dual Mobile-Friendly DDR / Dual-output PWM Controller
Intersil Corporation	ISL6224	248Kb / 13P	Single Output Mobile-Friendly PWM Controller June 8, 2006
Semtech Corporation	SC1404	458Kb / 25P	Mobile Multi-Output PWM Controller with Virtual Current SenseTM
Fairchild Semiconductor	FAN5236	501Kb / 19P	Dual Mobile-Friendly DDR / Dual-Output PWM Controller
Renesas Technology Corp	ISL6224	619Kb / 13P	Single Output Mobile-Friendly PWM Controller
ON Semiconductor	FAN5236	453Kb / 19P	Dual Mobile-Friendly DDR / Dual-Output PWM Controller Nov ember-2017, Rev. 2

More results

SC1403ITSTRT датащи(PDF) 1 Page - Semtech Corporation

SC1403ITSTRT датащи(HTML) 1 Page - Semtech Corporation

Аналогичный номер детали - SC1403ITSTRT

Аналогичное описание - SC1403ITSTRT

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31

датащи скачать

ссылки URL