ADP2140ACPZ1528R7 Description

The ADP2140ACPZ1528R7 is a 3 MHz, 600 mA, Low Quiescent Current Buck with a 300 mA LDO Regulator. It includes high efficiency, low quiescent 600 mA step-down dc-to-dc converter and a 300 mA LDO packaged in a small 10-lead 3 mm × 3 mm LFCSP.

ADP2140ACPZ1528R7 Features

• Input voltage range: 2.3 V to 5.5 V

• LDO input (V_IN2) 1.65 V to 5.5 V

• Buck output voltage range: 1.0 V to 3.3 V

• LDO output voltage range: 0.8 V to 3.3 V

• Buck output current: 600 mA

• LDO output current: 300 mA

• LDO quiescent current: 22 μA with zero load

• Buck quiescent current: 20 μA in PSM mode

• Low shutdown current: <0.3 μA

• Low LDO dropout 110 mV @ 300 mA load

• High LDO PSRR

  -65 dB @ 10 kHz at V_OUT2 = 1.2 V

  -55 dB @ 100 kHz at V_OUT2 = 1.2 V

• Low noise LDO: 40 μV RMS at V_OUT2 = 1.2 V

• Initial accuracy: ±1%

• Current limit and thermal overload protection

• Power-good indicator

• Optionally enable sequencing

• 10-lead 0.75 mm × 3 mm × 3 mm LFCSP package

ADP2140ACPZ1528R7 Applications

• Mobile phones

• Personal media players

• Digital camera and audio devices

• Portable and battery-powered equipment