SC1470: Synchronous Buck Power Supply Controller
The SC1470 is a single output, constant on-time synchronous-buck PWM controller intended for use in notebook computers and other battery operated portable devices.
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- Constant on-time for fast dynamic response
- Programmable VOUT range = 0.5 – VCCA
- VIN range = 1.8 V – 25 V
- DC current sense using low-side RDS(ON) Sensing or RSENSE in source of low-side MOSFET for greater accuracy
- Resistor programmable frequency
- Cycle-by-Cycle current limit
- Digital soft-start
- Combined EN and PSAVE functions
- Over-voltage/under-voltage fault protection and PGOOD output
- 5 µA typical shutdown current
- Low quiescent power dissipation
- Industrial temperature range
- 1% Internal reference
- Integrated gate drivers with soft switching
- Efficiency > 90%
- 14-lead TSSOP package
- Notebook computers
- CPU I/O supplies
- Handheld terminals and PDAs
- LCD monitors
- Network power supplies
- SC1470ITSTR: Package Minimum Tape & Reel Only
- SC1470ITSTRT: Lead-Free, RoHS and WEEE Compliant, Package Minimum Tape & Reel Only
