TPS72012DRVR Power Path Management IC LDO Voltage Regulators Sgl Output LDO 350mA Fixed Bias Pin

1 Features

• 350-mA High-Performance LDO

• Low Quiescent Current: 38 μA

• Excellent Load Transient Response: ±15mVforILOAD =0mAto350mAin1μs

• Excellent Line Transient Response:
  ΔVOUT =±2mVforΔVBIAS =±600mVin1μs ΔVOUT =±200μVforΔVIN =±400mVin1μs

• Low Noise: 48 μVRMS (10 Hz to 100 kHz)

• 80dBVINPSRR(10Hzto10kHz)

• 70 dB VBIAS PSRR (10 Hz to 10 kHz)

• Fast Start-Up Time: 140 μs

• Built-In Soft-Start With Monotonic VOUT Rise and Start-Up Current Limited to 100 mA + ILOAD

• Overcurrent and Thermal Protection

• Low Dropout: 110 mV at ILOAD = 350 mA

• Stable with 2.2-μF Output Capacitor

• Available in 1.33 mm × 0.96 mm DSBGA-5 and 2 mm × 2 mm SON-6 Packages

2 Applications

• Digital Cameras

• Cellular Camera Phones

• Wireless LAN

• Handheld Products

3 Description

The TPS720 family of dual rail, low-dropout linear regulators (LDOs) offers outstanding ac performance (PSRR, load and line transient response), while consuming a very low quiescent current of 38 μA.

The TPS720 supports a novel feature in which the output of the LDO regulates under light loads when the IN pin is left floating. The light-load drive current is sourced from VBIAS under this condition. This feature is particularly useful in power-saving applications where the DC-DC converter connected to the IN pin is disabled but the LDO is still required to regulate the voltage to a light load.

The TPS720 is stable with ceramic capacitors and uses an advanced BICMOS fabrication process that yields a dropout of 110 mV at a 350-mA output load. The TPS720 has the unique feature of providing a monotonic VOUT rise (overshoot limited to 3%) with VIN inrush current limited to 100 mA + ILOAD with an output capacitor of 2.2 μF.

The TPS720 uses a precision voltage reference and feedback loop to achieve overall accuracy of 2% over load, line, process, and temperature extremes. An ultra-small DSBGA package makes the TPS720 ideal for handheld applications. The TPS720 is also available in a SON-8 package. This family of devices is fully specified over the temperature range of TJ = –40°C to 125°C.

Device Information