ADP1754ACPZ-1.2-R7

The ADP1754/ADP1755 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 VIN/VOUT LDOs are ideal for regulation of nanometer FPGA geometries operating from 2.5 V down to 1.8 V I/O rails, and for powering core voltages down to 0.75 V. Using an advanced proprietary architecture, the ADP1754/ ADP1755 provide high power supply rejection ratio (PSRR) and low noise, and achieve excellent line and load transient response with only a small 4.7 µF ceramic output capacitor. The ADP1754 is available in seven fixed output voltage options. The ADP1755 is the adjustable version, which allows output voltages that range from 0.75 V to 3.3 V via an external divider. The ADP1754/ADP1755 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/ADP1755 are available in a 16-lead, 4 mm×4 mm 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.

Applications

• Server computers
• Memory components
• Telecommunications equipment
• Network equipment
• DSP/FPGA/microprocessor supplies
• Instrumentation equipment/data acquisition systems

Key features

• Maximum output current: 1.2 A
• Input voltage range: 1.6 V to 3.6 V
• Low shutdown current: <2 μA
• 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 0.75 V to 2.5 V (ADP1754)
• Adjustable output voltage option with soft start 0.75 V to 3.3 V (ADP1755)
• High PSRR 65 dB at 1 kHz, 65 dB at 10 kHz, 54 dB at 100 kHz
• 23 μV rms at 0.75 V output
• Stable with small 4.7 μF ceramic output capacitor
• Excellent load and line transient response
• Current-limit and thermal overload protection
• Power-good indicator
• Logic-controlled enable
• Reverse current protection