AIC1562

Features:

3V to 20V Input Voltage Operation.
Internal 800mA Switch.
Bootstrapped Driver for N-Channel MOSFET.
High Efficiency (up to 90%).
Fast Transient Response.
Internal ±2% Reference.
Low Quiescent Current at 1.6mA.
Frequency Operation from 200Hz to 200KHz.


Application

CPU Power Supplies for Mother Boards.
DC/DC Converters for CPU VRMs.
Step-Down DC-DC Converter Module.


Pinout




Specifications

Supply Voltage ...................................................................................................20V
Comparator Input Voltage Range ............................................................-0.3V~20V
Switch Collector Voltage ................................................................................... 20V
Switch Emitter Voltage ........................................................................................20V
Switch Collector to Emitter Voltage ..................................................................... 20V
Driver Collector Voltage.........................................................................................20V
Switch Current ...................................................................................................... 1A
Power Dissipation and Thermal Characteristics
                                    DIP Package
                                    Ta= 25°C.........................................................................1.0W
                                    Thermal Resistance ................................................. 100°C/W
                                    SO Package
                                    Ta= 25°C .....................................................................625mW
                                    Thermal Resistance.....................................................160°C/W
Operating Junction Temperature.........................................................................125°C
Operating Ambient Temperature Range........................................................0°C~70°C
Storage Temperature Range................................................................. - 65°C ~ 150°C


Description

The AIC1562 is a high performance monolithic DC/DC converter drive IC with outputbootstrapping capability, designed specifically for driving N-channel MOSFET to achieve maximum possible power conversion efficiency. The device consists of an internal temperature compensated reference, comparator, controlled duty cycle oscillator, bootstrapped driver and a 800mA output switch. Working with the AIC1741, a low power adjustable regulator, the AIC1562 works at 100% duty cycle under heavy load transient conditions to minimize transient response time, making it an idea precision switching power solution to stringent requirements on computer mother boards.