ISL6236IRZA集成電路（IC）的特殊用途穩(wěn)壓器規(guī)格書PDF中文資料

High-Efficiency, Quad-Output, Main Power Supply Controllers for Notebook Computers

The ISL6236 dual step-down, switch-mode power-supply (SMPS) controller generates logic-supply voltages in

battery-powered systems. The ISL6236 include two pulse-width modulation (PWM) controllers, 5V/3.3V and

1.5V/1.05V. The output of SMPS1 can also be adjusted from 0.7V to 5.5V. The SMPS2 output can be adjusted from 0V to 2.5V by setting REFIN2 voltage.

Features

? Wide Input Voltage Range 5.5V to 25V

? Dual Fixed 1.05V/3.3V and 1.5V/5.0V Outputs or Adjustable 0.7V to 5.5V (SMPS1) and 0V to 2.5V(SMPS2), ±1.5 Accuracy

? Secondary Feedback Input (Maintains Charge Pump Voltage)

? 1.7ms Digital Soft-Start and Independent Shutdown

? Fixed 3.3V/5.0V, or Adjustable Output 0.7V to 4.5V, ±1.5 (LDO): 200mA

? 3.3V Reference Voltage ±2.0: 5mA

? 2.0V Reference Voltage ±1.0: 50μA

? Constant ON-time Control with 100ns Load-Step Response

? Frequency Selectable

? rDS(ON) Current Sensing

? Programmable Current Limit with Foldback Capability

? Selectable PWM, Skip or Ultrasonic Mode

? BOOT Voltage Monitor with Automatic Refresh

? Independent POK1 and POK2 Comparators

? Soft-Start with Pre-Biased Output and Soft-Stop

? Independent ENABLE

? High Efficiency - up to 97

? Very High Light Load Efficiency (Skip Mode)

? 5mW Quiescent Power Dissipation

? Thermal Shutdown

? Extremely Low Component Count

? Pb-Free (RoHS Compliant)

Applications

? Notebook and Sub-Notebook Computers

? PDAs and Mobile Communication Devices

? 3-Cell and 4-Cell Li+ Battery-Powered Devices

? DDR1, DDR2 and DDR3 Power Supplies

? Graphic Cards

? Game Consoles

? Telecommunications