Datasheet Texas Instruments TPS65251-2RHAR — 数据表

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SLVSC70A – JANUARY 2015 – REVISED JANUARY 2015 TPS65251-x 4.5-V to 18-V Input, High Current, Synchronous Step Down Three Buck
Switchers With Integrated FET
1 Features 1 The converters can operate in 5-, 9-, 12-or 15-V
systems and have integrated power transistors. The
output voltage can be set externally using a resistor
divider to any value between 0.8 V and close to the
input supply. Each converter features an enable pin
that allows a delayed start-up for sequencing
purposes, soft-start pin that allows adjustable softstart time by choosing the soft-start capacitor, and a
current limit (RLIMx) pin that enables the designer to
adjust current limit by selecting an external resistor
and optimize the choice of inductor. The current
mode control allows a simple RC compensation. 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), …