ADP1764 - ADI

The pictures are for reference only, and the specific specifications can be found in the product manual.

Part No

ADP1764
Manufacturer

ADI
ChipWorker Part#

CW983393858
Description

4A, Low VIN, Low Noise, CMOS Linear Regulator
Documentation

Datasheet

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ADP1764 Specifications

Attribute	Attribute Value

Part Number	ADP1764
Manufacturer	ADI
ChipWorker Part#	CW983393858
Documentation	Datasheet
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Product Lifecycle Status	Recommended for New Designs

Product Description

Product Details
The ADP1764 is a low noise, low dropout (LDO) linear regulator. It is designed to operate from a single input supply with an input voltage as low as 1.10 V without the requirement of an external bias supply to increase efficiency and provide up to 4 A of output current (IOUT).
The low 47 mV typical dropout voltage at a 4 A load allows the ADP1764 to operate with a small headroom while maintaining regulation and providing better efficiency.
The ADP1764 is optimized for stable operation with small 22 μF ceramic output capacitors. The ADP1764 delivers optimal transient performance with minimal printed circuit board (PCB) area.
The ADP1764 is available in fixed output voltages ranging from 0.55 V to 1.5 V. The output voltage (VOUT) of the adjustable output model can be set from 0.5 V to 1.5 V through an external resistor connected between VADJ and ground.
The ADP1764 has an externally programmable soft start time by connecting a capacitor to the SS pin. Short-circuit and thermal overload protection circuits prevent damage in adverse conditions. The ADP1764 is available in a small, 16-lead LFCSP package for the smallest footprint solution to meet a variety of applications.
**Applications**
Regulation to noise sensitive applications such as radio frequency (RF) transceivers, analog-to-digital converter (ADC) and digital-to-analog converter (DAC) circuits, phase-locked loops (PLLs), voltage controlled oscillators (VCOs) and clocking integrated circuits
Field-programmable gate array (FPGA) and digital signal processor (DSP) supplies
Medical and healthcare
Industrial and instrumentation
### Features and Benefits
4 A maximum output current
Low input voltage supply range
VIN = 1.10 V to 1.98 V, no external bias supply required
Fixed output voltage range (VOUT_FIXED): 0.55 V to 1.5 V
Adjustable output voltage range (VOUT_ADJ): 0.5 V to 1.5 V
Ultralow noise: 2 µV rms, 100 Hz to 100 kHz
Noise spectral density: 5 nV/√Hz at 10 kHz; 4 nV/√Hz at 100 kHz
Low dropout voltage: 47 mV typical at 4 A load
Operating supply current: 5 mA typical at no load
±1.5% fixed output voltage accuracy over line, load, and temperature
Excellent power supply rejection ratio (PSRR) performance
69 dB typical at 10 kHz at 4 A load
46 dB typical at 100 kHz at 4 A load
Excellent load/line transient response
Soft start to reduce inrush current
Optimized for small 22 µF ceramic capacitors
Current-limit and thermal overload protection
Power-good indicator
Precision enable
16-lead, 3 mm × 3 mm LFCSP package

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