ANALOG DEVICES ADP1752 Data Sheet

0.8 A, Low VIN, Low Dropout Linear Regulator

ADP1752/ADP1753 FEATURES TYPICAL APPLICATION CIRCUITS

VIN = 1.8V VOUT = 1.5V

Maximum output current: 0.8 A Input voltage range: 1.6 V to 3.6 V

Low shutdown current: <2 μA

VIN VIN VOUT VOUT

Very low dropout voltage: 70 m V @ 0.8 A load

VIN VOUT

Initial accuracy: ±1%

Accuracy over line, load, and temperature: ±2% VIN100kΩ ADP1752 VOUT TOP VIEW

7 fixed output voltage options with soft start

(Not to Scale)

VIN VOUT

0.75 V to 2.5 V (ADP1752)

Adjustable output voltage option with soft start EN SENSE

0.75 V to 3.0 V (ADP1753) PG GND SS NC

High PSRR 65 d B @ 1 k Hz

65 d B @ 10 k Hz 54 d B @ 100 k Hz

Figure 1. ADP1752 with Fixed Output Voltage, 1.5 V

23 μV rms at 0.75 V output

VIN = 1.8V VOUT = 0.5V(1 + R1/R2)

Stable with small 4.7 μF ceramic output capacitor Excellent load and line transient response 4.7µF 4.7µF Current-limit and thermal overload protection VIN VIN VOUT VOUT Power-good indicator

VIN VOUT

Logic-controlled enable

VIN100kΩ ADP1753 VOUT

Reverse current protection TOP VIEW

(Not to Scale)

VIN VOUT

APPLICATIONS

EN ADJ

Server computers

PG GND SS NC R2

Memory components Telecommunications equipment

Network equipment DSP/FPGA/microprocessor supplies

Figure 2. ADP1753 with Adjustable Output Voltage, 0.75 V to 3.0 V

Instrumentation equipment/data acquisition systems

GENERAL DESCRIPTION

The ADP1752/ADP1753 are low dropout (LDO) CMOS linear voltages that range from 0.75 V to 3.0 V via an external divider. regulators that operate from 1.6 V to 3.6 V and provide up to The ADP1752/ADP1753 allow an external soft start capacitor 800 m A of output current. These low VIN/VOUT LDOs are ideal to be connected to program the startup. A digital power-good for regulation of nanometer FPGA geometries operating from output allows power system monitors to check the health of the 8- 8- 2.5 V down to 1.8 V I/O rails, and for powering core voltages output voltage.

down to 0.75 V. Using an advanced proprietary architecture,

The ADP1752/ADP1753 are available in a 16-lead, 4 mm × 4 mm

they provide high power supply rejection ratio (PSRR) and low

LFCSP, making them not only very compact solutions, but also

noise, and achieve excellent line and load transient response

providing excellent thermal performance for applications that

with only a small 4.7 μF ceramic output capacitor.

require up to 800 m A of output current in a small, low profile The ADP1752 is available in seven fixed output voltage options. footprint.

The ADP1753 is the adjustable version, which allows output

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