TPS7A21345PYWDJ

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Overview

The TPS7A21345PYWDJ is a low-dropout linear voltage regulator from the TPS7A21 family, manufactured by Texas Instruments. It provides a fixed output voltage of 3.45 V with a maximum continuous output current of 500 mA. The device operates within an input voltage range of 2.0 V to 6.0 V and maintains a typical quiescent current of 6.5 µA. Key electrical characteristics include a high power-supply rejection ratio (PSRR) of 91 dB at 1 kHz and a low output noise of 7.7 µVRMS. The unit is housed in a compact 4-pin DSBGA package measuring 0.602 mm × 0.602 mm.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Feature Summary

• Ultra-low noise performance without requiring external noise bypass capacitors
• High power-supply rejection ratio for sensitive analog and RF circuits
• Smart enable circuit with internal pulldown resistor to minimize quiescent current
• Active discharge mechanism to rapidly remove charge from the output pin

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Applications

• Mobile phones and tablets
• Wearable electronic devices
• IP cameras
• Portable medical equipment
• RF, PLL, VCO, and clock power supplies

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm the exact output voltage tolerance and package variant. Ensure that the supply chain source provides valid traceability and authenticity certificates. Confirm compliance with RoHS directives and check for any recent product change notifications or lifecycle status updates prior to finalizing procurement orders.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Selection Notes

Select this component when designing battery-powered systems requiring minimal quiescent current alongside high PSRR. The wide ceramic capacitor compatibility simplifies layout and reduces overall solution size. Verify that the required output voltage falls within the supported range and that the thermal dissipation capabilities of the small DSBGA package are sufficient for the expected load conditions.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Part Context

This part belongs to the TPS7A21 series of ultra-small LDO regulators designed for space-constrained applications. The series emphasizes low noise and high accuracy for sensitive signal chains. The YWD suffix indicates the specific 4-pin DSBGA package configuration used in this variant, distinguishing it from other package options available within the same functional family.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Replacement Considerations

Consult the official datasheet orderable addendum for direct substitute part numbers within the TPS7A21 family. Verify pin-to-pin compatibility and ensure that alternative variants meet the specific output voltage and package requirements.