ISL9440B Overview
DATASHEET ISL9440B, ISL9440C Triple Step-Down PWM and Single Linear Controller with Programmable Soft-Start FN6799 Rev 4.00 February 18, 2016 The ISL9440B and ISL9440C are quad-output synchronous buck controllers that integrate three PWM controllers and one low drop-out linear regulator controller, which are full featured and designed to provide multi-rail power for use in products such as cable and satellite...
ISL9440B Key Features
- Three Integrated Synchronous Buck PWM Controllers
- Internal Bootstrap Diodes
- Internal pensation
- Independent Control for each Regulator and Programmable Output Voltages; Independent Enable/Shutdown/Soft-start
- Fixed Switching Frequency: 300kHz(B), 600kHz(C)
- Adaptive Shoot-Through Protection on all Synchronous Buck Controllers
- Pre-biased Output Start-up Capability
- Out-of-Phase Switching to Reduce Input Capacitance (0°/180°/0°)
- No External Current Sense Resistor
- Uses Lower MOSFET’s rDS(ON)