SC120集成电路（IC）的稳压器-线性规格书PDF中文资料

SC120属于集成电路（IC）的稳压器-线性。由升特制造生产的SC120稳压器 - 线性线性稳压器用于提供稳定的输出电压，无论负载电流、输入电压或环境因素如何变化，这些输出电压通常都要保持不变。它们的工作原理要求输入电压维持在高于所需的输出电压，而且要超出某个最小量，并且在工作时会将输入端的任何多余电压转换为热量。对于大多数应用而言，虽然这种稳压器的效率低于开关模式的稳压器，但它们通常更适合对噪声高度敏感的应用。

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 wide input voltage range allows use in systems with single NiMH or alkaline battery cells as well as in systems with higher voltage battery supplies. It features an internal 1.2A switch and synchronous rectifi er to achieve up to 94 efficiency and to eliminate the need for an external Schottky diode. The output voltage can be set to 3.3V with internal feedback, or to any voltage within the specified range using a standard resistor divider.

Features

■ Input voltage — 0.7V to 4.5V

■ Minimum input startup voltage — 0.865V

■ 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 × 2.0 × 0.6 (mm) MLPD-UT-6 and SOT23-6 packages

■ Lead-free and halogen-free

■ WEEE and RoHS compliant

Applications

■ 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