Datasheet Texas Instruments TPS65258RHAR — Ficha de datos

TPS65258
SLVSAB31 – SEPTEMBER 2011 www.ti.com 4.5-V TO 16-V INPUT, HIGH CURRENT, SYNCHRONOUS STEP DOWN THREE DC-DC
CONVERTERS WITH INTEGRATED FET AND 2 USB SWITCHES
Check for Samples: TPS65258 FEATURES 1 Wide Input Supply Voltage Range:
4.5 V -16 V
0.8-V, 1% Accuracy Reference
Continuous Loading:
3 A (Buck1), 2 A (Buck2 and 3)
Maximum Current:
3.5 A (Buck 1), 2.5 A (Buck2 and 3)
Synchronous Operation, 300-kHz – 2.2-MHz
Switching Frequency Set By External Resistor
External Enable Pins With Built-In Current
Source for Easy Sequencing
External Soft Start Pins
Adjustable Cycle-by-Cycle Current Limit Set by External Resistor
Current-Mode Control With Simple
Compensation Circuit
Automatic Low Pulse Skipping (PSM) Power
Mode, Allowing for an Output Ripple Better
than 2%
Forced PWM Mode
Support Pre-Biased Outputs …