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
