SC403B集成电路（IC）的线性稳压器控制器规格书PDF中文资料

SC403B属于集成电路（IC）的线性稳压器控制器。由升特制造生产的SC403B稳压器 - 线性 + 开关此产品族中的产品用于构建执行 DC-DC 转换或电压调节功能的电路，采用的是开关模式和线性稳压器功能的组合。虽然具体的拓扑各不相同，但此类产品的主要目的是将开关模式技术的效率优势与线性稳压技术的低噪声特性结合在一起。

Description

The SC403B is a stand-alone synchronous EcoSpeed® buck power supply which incorporates Semtech’s advanced patented adaptive on-time control architecture. It provides excellent light-load efficiency and fast transient response. It features integrated power MOSFETs, a boot strap switch, and a programmable LDO in a 5x5mm package. The device is highly efficient and uses minimal PCB area.

Features

Power System:

Input voltage — 3V to 28V

Internal or external bias voltage — 3V to 5.5V

Reference Voltage — 600mV

Integrated bootstrap switch

Programmable LDO output — 200mA

1 reference tolerance -40 to +85 °C

EcoSpeed® architecture with pseudo-fixed frequency adaptive on-time control

Logic Input/Output Control:

Independent control EN for LDO and switcher

Programmable VIN UVLO threshold

Power good output

Selectable power save mode

Programmable soft start time

Protections:

Over-voltage and under-voltage

TC compensated RDS(ON) sensed current limit

Thermal shutdown

Any ESR — SP, POSCAP, OSCON, and ceramic capacitors

Package:

Lead-free package — 5x5mm, 32-pin MLPQ

Fully RoHS/WEEE compliant and halogen-free

Applications

Office automation and computing

Networking and telecommunication equipment

Point of load power supplies and module replacement

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