ISL9440
ISL9440 is Step-Down PWM and Single Linear Controller manufactured by Renesas.
features
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PART NUMBER
ISL9440A
ISL9441
EARLY WARNING
SWITCHING FREQUENCY (k Hz)
Features
- Three integrated synchronous buck PWM controllers
- Internal bootstrap diodes
- Internal pensation
- Internal soft-start
- Independent control for each regulator and programmable output voltages; independent enable/shutdown
- Fixed Switching Frequency: 300k Hz (ISL9440, ISL9441); 600k Hz (ISL9440A)
- Adaptive shoot through protection on all synchronous buck controllers
- Independently programmable voltage outputs
- 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
- Cycle-by-cycle current limiting
- Wide input voltage range
- Input rail powers VIN Pin: 5.6V to 24V
- Input rail powers VCC_5V Pin (VIN tied to VCC_5V, for 5V input applications): 4.5V to 5.6V
- Early warning (ISL9440, ISL9440A) on input voltage failure
- Integrated reset function (ISL9440, ISL9440A)
- Pb-free (Ro HS pliant)
Applications
- Satellite and cable set-top boxes
- Cable modems
- Vo X gateway devices
- NAS/SAN...
