AS1364 Low-Dropout IC

Description

The AS1364 is a low-dropout linear regulator (LDO) designed to operate from 2V to 5.5V input, that delivers a wide range of highly accurate (±0.75%) factory trimmed output voltages as well as adjustable output voltages (using an external resistor-divider network).

The ultra-low dropout device requires only 140mV dropout voltage while delivering a guaranteed 1A load current and is therefore perfectly suited for battery-operated portable applications.

The AS1364 offers extremly low 10μVRMS (100Hz to 100kHz) or 45μVRMS (10Hz to 1MHz) output voltage noise.

The device features an internal PMOS pass transistor (for a low supply current of only 35μA), reset output, a low-power shutdown mode, and protection from shortcircuit and thermal-overload conditions.

The AS1364 is available in an 8-pin TDFN 3x3mm package.

Key Features

• Guaranteed Output Current: 1A
• Low Dropout: 140mV @ 1A
• Output Voltage Accuracy: Up to ±0.75%
• 2.0V to 5.5V Input Voltage
• Fixed VOUT: 1.2V to 5.0V
• Adjustable VOUT: 1.2V to 5.0V
• Low Ground Current: 35μA
• Low Shutdown Current: 10nA
• Low Output Noise: 45μVRMS (from 10Hz to 1MHz)
• Thermal Overload Protection
• Output Current Limit
• 8-pin TDFN 3x3mm Package

Applications

The device is ideal for laptops, PDAs, portable audio devices, mobile phones, cordless phones, and any other battery-operated portable device as well as µC or µP supply.

Block Diagram