Product Details
●The ADP1761 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 1 A of output current.
●The low 30 mV typical dropout voltage at a 1 A load allows the ADP1761 to operate with a small headroom while maintaining regulation and providing better efficiency.
●The ADP1761 is optimized for stable operation with small 10 μF ceramic output capacitors. The ADP1761 delivers optimal transient performance with minimal board area.
●The ADP1761 is available in fixed output voltages ranging from 0.9 V to 1.5 V. The output 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 ADP1761 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 ADP1761 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
● 1 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 = 0.9 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
● 4 nV/√Hz at 10 kHz
● 3 nV/√Hz at 100 kHz
● Low dropout voltage: 30 mV typical at 1 A load
● Operating supply current: 4.5 mA typical at no load
● ±1.5% fixed output voltage accuracy over line, load, and temperature
● Excellent power supply rejection ratio (PSRR) performance
● 67 dB typical at 10 kHz at 1 A load
● 51 dB typical at 100 kHz at 1 A load
● Excellent load/line transient response
● Soft start to reduce inrush current
● Optimized for small 10 μF ceramic capacitors
● Current-limit and thermal overload protection
● Power-good indicator
● Precision enable
● 16-lead, 3 mm × 3 mm LFCSP package
