Triple Output Controller with 1A Standard Buck PWM and Dual LDOs

The ISL8501 is a high-performance, triple output controller that provides a single, high frequency power solution for a variety of point of load applications. The ISL8501 integrates a 1A standard buck PWM controller and switching MOSFET with two 500mA LDOs.

Features
• Standard Buck Controller with Integrated Switching Power MOSFET and Dual LDOs
• Integrated Boot Diode
• Input Voltage Range
    - Fixed 5V ±10%
    - Variable 6V to 25V
• PWM Output Voltage Adjustable from 0.6V to 20V with Continuous Output Current up to 1A
• Voltage Mode Control with Voltage Feed Forward
• Fixed 500kHz Switching Frequency
• Externally Adjustable Soft-Start Time
• Output Undervoltage Protection
• Dual LDO Adjustable Options
    - LDO1, 0.6V to 4.2V . . . . . . . . . . . . . . . . . . . . . . 500mA
    - LDO2, 0.6V to 4.2V . . . . . . . . . . . . . . . . . . . . . . 500mA
• Individual Enable Inputs
• Two PGOOD Outputs (PWM and both LDOs)
• Overcurrent Protection
• Thermal Overload Protection
• Internal 5V LDO regulator
• Pb-Free Plus Anneal Available (RoHS Compliant)

Applications
• General Purpose
• WLAN Cards-PCMCIA, Cardbus32, MiniPCI CardsCompact Flash Cards
• Hand-Held Instruments