GENERAL DESCRIPTION

The ADP1752/ADP1753 are low dropout (LDO) CMOS linear regulators that operate from 1.6 V to 3.6 V and provide up to 800 mA of output current. These low VIN/VOUT LDOs are ideal for regulation of nanometer FPGA geometries operating from 2.5 V down to 1.8 V I/O rails, and for powering core voltages down to 0.75 V. Using an advanced proprietary architecture, they provide high power supply rejection ratio (PSRR) and low noise, and achieve excellent line and load transient response with only a small 4.7 µF ceramic output capacitor.

FEATURES

Maximum output current: 0.8 A

Input voltage range: 1.6 V to 3.6 V

Low shutdown current: <2 µA

Very low dropout voltage: 70 mV @ 0.8 A load

Initial accuracy: ±1

Accuracy over line, load, and temperature: ±2

7 fixed output voltage options with soft start 0.75 V to 2.5 V (ADP1752)

Adjustable output voltage option with soft start 0.75 V to 3.3 V (ADP1753)

High PSRR 65 dB @ 1 kHz 65 dB @ 10 kHz 54 dB @ 100 kHz

23 μV rms at 0.75 V output

Stable with small 4.7 µF ceramic output capacitor

Excellent load and line transient response

Current-limit and thermal overload protection

Power-good indicator

Logic-controlled enable

Reverse current protection

APPLICATIONS

Server computers

Memory components

Telecommunications equipment

Network equipment

DSP/FPGA/microprocessor supplies

Instrumentation equipment/data acquisition systems