SC1403

更新时间： 2024-02-12 14:56:24

品牌	Logo	应用领域
商升特 - SEMTECH		控制器
页数	文件大小	规格书
30页	566K
描述
Mobile Multi-Output PWM Controller with Virtual Current SenseTM

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中文翻译

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技术参数
数据手册

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SC1403 技术参数

是否无铅：	不含铅	是否Rohs认证：	符合
生命周期：	Obsolete	零件包装代码：	TSSOP
包装说明：	TSSOP, TSSOP28,.25	针数：	28
Reach Compliance Code：	compliant	ECCN代码：	EAR99
HTS代码：	8542.39.00.01	风险等级：	5.8
模拟集成电路 - 其他类型：	DUAL SWITCHING CONTROLLER	控制模式：	CURRENT-MODE
控制技术：	PULSE WIDTH MODULATION	最大输入电压：	30 V
最小输入电压：	6 V	标称输入电压：	15 V
JESD-30 代码：	R-PDSO-G28	JESD-609代码：	e3
长度：	9.7 mm	湿度敏感等级：	1
功能数量：	1	端子数量：	28
最高工作温度：	85 °C	最低工作温度：	-40 °C
最大输出电流：	1 A	封装主体材料：	PLASTIC/EPOXY
封装代码：	TSSOP	封装等效代码：	TSSOP28,.25
封装形状：	RECTANGULAR	封装形式：	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH
峰值回流温度（摄氏度）：	260	认证状态：	Not Qualified
座面最大高度：	1.2 mm	子类别：	Switching Regulator or Controllers
表面贴装：	YES	切换器配置：	PUSH-PULL
最大切换频率：	380 kHz	温度等级：	INDUSTRIAL
端子面层：	MATTE TIN	端子形式：	GULL WING
端子节距：	0.65 mm	端子位置：	DUAL
处于峰值回流温度下的最长时间：	NOT SPECIFIED	宽度：	4.4 mm
Base Number Matches：	1

SC1403 数据手册

SC1403

Mobile Multi-Output PWM Controller

with Virtual Current Sense^TM

PRELIMINARY

POWER MANAGEMENT

Description

Features

The SC1403 is a multiple-output power supply controller 3.3V and 5V dual synchronous outputs, resistor

designed to power battery operated systems. The

SC1403 provides synchronous rectified buck converter

control for two (3.3 V and 5 V) power supplies. An effi-

ciency of 95% can be achieved for the two supplies. The

SC1403 uses Semtech’s proprietary Virtual Current

Sense^TMtechnology along with external error amplifier

compensation to achieve enhanced stability and DC ac-

curacy over a wide range of output filter components

while maintaining fixed frequency operation. The SC1403

also provides a linear regulator for system housekeep-

ing. The 5 V linear regulator takes its input from the

battery; for efficiency, the output is switched to the 5V

output when available.

programmable to 2.5V

Fixed frequency or PSAVE for maximum efficiency

over wide load current range

5V / 50mA linear regulator

Virtual Current Sense for enhanced stability

Accurate low loss current limiting

Out of phase switching reduces input capacitance

requirements

External compensation supports wide range of

output filter components

Programmable power-up sequence

Power good output

Output overvoltage & overcurrent protection with

output undervoltage shutdown

4µA typical shutdown current

6mW typical quiescent power

Control functions include: power up sequencing, soft

start, power-good signaling, and frequency synchroniza-

tion. Line and load regulation is to +/-1% of the output

voltage. The internal oscillator can be adjusted to 200

kHz or 300 kHz or synchronized to an external clock.

The MOSFET drivers provide >1A peak drive current for

fast MOSFET switching.

Applications

Notebook and subnotebook computers

Automotive electronics

The SC1403 includes a PSAVE# input to select pulse

skipping mode for high efficiency at light load, or fixed

frequency mode for low noise operation.

Desktop DC-DC converters

Typical Application Circuit

SHDN#

V+ SYNC VL

COMP3

BST3

COMP5

BST5

DH3

DH5

PHASE3

DL3

PHASE5

DL5

PGND

CSH3

CSL3

FB3

CSH5

CSL5

FB5

SEQ

REF

ON3

ON5

RST#

PSAV#

GND

Revision 3, August 2002

www.semtech.com

12 3 4 5 6 7...30

中文翻译

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与SC1403相关器件

型号	品牌	获取价格	描述	数据表
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
SC1404ISSTRT	SEMTECH	获取价格	暂无描述
SC1404ITSTR	SEMTECH	获取价格	Mobile Multi-Output PWM Controller with Virtual Current Sense
SC1404ITSTRT	SEMTECH	获取价格	Dual Switching Controller, Current-mode, 380kHz Switching Freq-Max, PDSO28, ROHS COMPLIANT
SC1405	SEMTECH	获取价格	HIGH SPEED SYNCHRONOUS POWER MOSFET SMART DRIVER

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