SC120中文资料低电压同步升压转换器数据手册Semtech规格书

描述 Description

The SC120 is a high efficiency, low noise, synchronous step-up DC-DC converter that provides boosted voltage levels in low-voltage handheld applications. The wideinput voltage range allows use in systems with single NiMH or alkaline battery cells as well as in systems with higher voltage battery supplies.

特性 Features

·Input voltage — 0.7V to 4.5V
·Minimum start-up voltage — 0.85V
·Output voltage — fixed at 3.3V; adjustable from 1.8V to 5.0V
·Peak input current limit — 1.2A
·Output current at 3.3 VOUT — 80mA with VIN = 1.0V, 190mA with VIN = 1.5V
·Efficiency up to 94%
·Internal synchronous rectifier
·Switching frequency — 1.2MHz
·Automatic power save
·Anti-ringing circuit
·Operating supply current (measured at OUT) — 50μA
·Shutdown current — 0.1μA (typ)
·No forward conduction path during shutdown
·Available in ultra-thin 1.5 x 2.0 x 0.6 (mm) MLPD-UT-6 and SOT23-6 packages
·Lead-free and halogen-free
·WEEE and RoHS compliant

应用 Application

·MP3 players
·Smart Phones and cellular phones
·Palmtop computers and handheld Instruments
·PCMCIA cards
·Memory cards
·Digital cordless phones
·Personal medical products
·Wireless VoIP phones
·Small motors