The TPS6224x-Q1 devices are high-efficiency synchronous DC/DC step-down converters
providing a fixed output voltage and up to 300 mA of output current. They offer low power
consumption for battery-powered/always-on automotive applications like Remote Keyless Entry (RKE)
or Passive Entry Passive Start (PEPS) key fobs and base stations. With an input voltage range of 2
V to 6 V, the devices support applications powered by Li-MnO2 coin cell batteries, Li-Ion
batteries, two- (2S) and three-cell (3S) alkaline, 3.3-V and 5-V input voltage rails. The
TPS6224x-Q1 operate at a 2.25-MHz fixed switching frequency at high load current and enters the
power-save mode operation at light load currents to maintain high efficiency and low power
consumption over the entire load current range. The power-save mode is optimized for low
output-voltage ripple. In the shutdown mode, the current consumption is reduced to less than 1 µA.
The TPS6224x-Q1 allow the use of small inductors and capacitors to achieve a small solution size,
and is available in a 5-pin TSOT23 package.
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