ISL9440B
ISL9440B is Triple Step-Down PWM and Single Linear Controller manufactured by Renesas.
features
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TABLE 1.
PART NUMBER
EARLY WARNING
SWITCHING FREQUENCY
(k Hz)
SOFT-STARTING TIME (ms)
ISL9440
Yes
ISL9440A
Yes
ISL9441
No
Yes
Programmable
ISL9440C
Yes
(No longer available or supported)
Programmable
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: 300k Hz(B), 600k Hz(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 r DS(ON)
- Current Mode Controller with Voltage Feed-Forward
- plete Protection
- Overcurrent, Overvoltage, Undervoltage Lockout, Over-Temperature...
