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DATA SHEET
TPS65251-x 4.5-V to 18-V Input, High Current, Synchronous Step Down Three Buck Switchers With Integrated FET
1 Features
- Wide input supply voltage range (4.5 to 18
V)
- Output range: 0.8 V to VIN – 1 V
- Continuous loading: 3 A (buck 1),
2 A (buck 2 and 3) - Maximum current: 3.5 A (buck 1),
2.5 A (buck 2 and 3) - Adjustable switching frequency
300 kHz to 2.2 MHz set by external resistor - Dedicated enable for each buck
- External synchronization pin for oscillator
- Adjustable current limit set by external
resistor
- Soft-start pins
- Current-mode control with simple compensation
circuit
- Power good
- Automatic PFM/PWM operation
- VQFN package, 40-pin 6-mm × 6-mm RHA
