The TPS65051-Q1 device is an integrated power-management IC for
applications powered by one Li-Ion or Li-Polymer cell, which requires multiple power rails. The
provides two efficient, 2.25-MHz step-down converters targeted at providing the core voltage and
I/O voltage in a processor-based system. Both step-down converters enter a low-power mode at light
load for maximum efficiency across the widest possible range of load currents.
For low-noise applications, the user can force the devices into fixed-frequency PWM mode
by pulling the MODE pin high. Operating in the shutdown mode reduces the current consumption to
less than 1 μA. The devices allow the use of small inductors and capacitors to achieve a small
solution size. The TPS65051-Q1 device provides an output current of up to 1 A (DCDC1) and
0.6 A (DCDC2). The TPS65051-Q1 device also integrates two 400-mA LDO and two 200-mA LDO
voltage regulators, which one can turn on or off using separate enable pins on each LDO. Each LDO
operates with an input voltage range between 1.5 V and 6.5 V, allowing the supply to be from one of
the step-down converters or directly from the main battery.
The LDO voltage of the TPS65051-Q1 device is adjustable using external resistor
For all available packages, see the orderable addendum at the
end of the datasheet.
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