ADI ADP1755ACPZ

正3.6V1.2A

Overview

 Maximum output current:1.2A Input voltage range:1.6Vto 3.6V Low shutdown current:<2uA Very low dropout voltage:105 mV at 1.2 A load Initial accuracy:±1% Accuracy over line, load, and temperature:±2% 7 fixed output voltage options with soft start 0.75Vto 2.5V(ADP1754) Adjustable output voltage option with soft start 0.75Vto 3.3V(ADP1755) High PSRR 65 dB at 1kHz 65dBat 10kHz 54dB at 100kHz 23 μVrms at 0.75 Voutput Stable with small 4.7 uF ceramic output capacitor Excellent load and line transient response Current-limit and thermal overload protection Power-good indicator Logic-controlled enable Reverse current protection

The ADP1754/ADP1755ACPZ are low dropout(LDO) CMOS linear regulators that operate from 1.6 V to 3.6 V and provide up to 1.2 A of output current. These low VN/Vour LDOs are ideal for regulation of nanometer FPGA geometries operating from 2.5V down to 1.8 V I/O rails, and for powering core voltages down to0.75 V. Using an advanced proprietary architecture, the ADP1754/ADP1755ACPZ provide high power supply rejection ratio (PSRR) and low noise, and achieve excellent line and load transient response with only a small 4.7 uF ceramic output capacitor. The ADP1754 is available in seven fixed output voltage options. The ADP1755ACPZ is the adjustable version, which allows outputvoltages that range from 0.75 V to 3.3 V via an external divider. The ADP1754/ADP1755ACPZ allow an external soft start capacitor to be connected to program the startup.A digital power-good output allows power system monitors to check the health of the output voltage. The ADP1754/ADP1755ACPZ are available in a 16-lead,4mmx4mm LFCSP, making them not only very compact solutions, but also providing excellent thermal performance for applications that require up to 1.2 A of output current in a small, low profile footprint.

Features

Bulk Package
Positive Output Configuration
Adjustable Output Type
1 Number of Regulators
3.6V Voltage - Input (Max)
0.75V Voltage - Output (Min/Fixed)
3.3V Voltage - Output (Max)
0.2V @ 1.2A Voltage Dropout (Max)
1.2A Current - Output
65dB ~ 51dB (1kHz ~ 100kHz) PSRR
Enable, Power Good, Soft Start Control Features
Over Current, Over Temperature, Reverse Current, Reverse Polarity, Short Circuit, Under Voltage Lockout (UVLO) Protection Features
Surface Mount Mounting Type
1.4 mA Current - Supply (Max)