器件名称: AA18380
功能描述: Switching Regulator Controller
文件大小: 489.19KB 共14页
简 介:Agamem Microelectronics Inc. PRELIMINARY
OVERVIEW
AA18380
Switching Regulator Controller
The AA18380 is a single-channel PWM DC-DC regulator control IC that supports low-voltage operation. This IC features a low minimum operating voltage of 1.8 V and low current consumption, is optimal for use in high-efficiency power supplies for portable electronic equipment.
FEATURES
Wide operating supply voltage range: 1.8 V to 15 V Stable reference voltage circuit: 1.25V. Low current consumption: Typically 5.5 mA in operation, 1 A or less in stand-by Wide PWM output frequency range: 10 kHz to 1 MHz Incorporates a soft start circuit and adjustable soft start time. Timer latch short-circuit protection circuit (SCP). Low input voltage malfunction prevention circuit (U.V.L.O.) On/off control function Totem-pole type output by using an external resistor to set the output current (for NPN transistors)
PIN Configuration (TOP VIEW) INSCP VCC BR/CTL 1 2 3 4 8 FB 7 OSC 6 GND 5 OUT
APPLICATIONS
LCD Displays PDAs Digital Still Cameras Hand-held and portable instruments
Copyright Agamem Microelectronics Inc.
1
www.agamem.com.tw
2007/1/15
Agamem Microelectronics Inc. PRELIMINARY
PIN DESCRIPTIONS
Pin No. 1 2 3 4 5 6 7 8 Symbol INSCP VCC BR/CTL OUT GND OSC FB I/O I — — I O — — O
AA18380
Switching Regulator Controller
Description
Internal error amplifier inverting input pin Soft start and short circuit protection setting capacitor connection pin IC power supply pin Output curren……
