TPS7A10

• Ultra-Low Input Voltage Range: 0.75 V to 3.3 V
• Ultra-Low Dropout for Minimum Power Loss:
  • 70 mV (Maximum) at 300 mA (V_OUT > 1.0 V), YKA Package
• Low Quiescent Current:
  • V_IN I_Q = 1.6 µA (Typical)
  • V_BIAS I_Q = 6 µA (Typical)
• 1.5% Accuracy over Load, Line, and Temperature
• High PSRR: 60 dB at 1 kHz
• Available in Fixed-Output Voltages:
  • 0.5 V to 3.0 V (in 50-mV Steps)
• V_BIAS Range: 1.7 V to 5.5 V
• Packages:
  • 0.74-mm × 1.09-mm WCSP-5
  • 1.50-mm × 1.50-mm WSON-6
• Built-In Soft Start With Monotonic V_OUT Rise
• Active Output Discharge

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The TPS7A10 is an ultra-small, low quiescent current, low-dropout regulator (LDO) that can source 300 mA with an outstanding ac performance (load and line transient responses). This device has an input range of 0.75 V to 3.3 V, and output range of 0.5 V to 3.0 V with a very high accuracy of 1.5% over load, line and temperature. This performance is ideal for powering the lower core voltages of the modern MCUs and analog sensors.

The main power path is through V_IN and can be connected to a power supply as low as 70 mV above the output voltage. This device supports very low input voltages with the use of an additional V_BIAS rail that is used to power the internal circuitry of the LDO. Both V_IN and V_BIAS consume very low quiescent current of 1.6 µA and 6 µA, respectively. The low I_Q and ultra-low dropout features helps in increasing the efficiency of the solution in the power-sensitive applications. For example, V_IN can be an output of a high-efficiency, DC/DC step-down regulator, and the V_BIAS pin can be connected to a rechargeable battery.

The TPS7A10 is equipped with an active pull-down circuit to quickly discharge the output when disabled, and provides a known start-up state.

The TPS7A10 is available in an ultra-small, 5-pin DSBGA (YKA) package that makes the device suitable for space-constrained applications. The device is also available in a 6-pin WSON (DSE) package.