DESCRIPTION
The LT®3022 is a very low dropout voltage (VLDO™) linear regulator that operates from single input supplies down to 0.9V. The device supplies 1A output current with 145mV typical dropout voltage. The LT3022 is ideal for low input voltage to low output voltage applications, providing comparable electrical efficiency to a switching regulator. The regulator optimizes stability and transient response with low ESR ceramic output capacitors as small as 10µF. Other LT3022 features include 0.05% typical line regulation and 0.05% typical load regulation. In shutdown, quiescent current typically drops to 7.5µA. Internal protection circuitry includes reverse-battery protection, current limiting, thermal limiting with hysteresis and reverse-current protection.
FEATURES
■ VIN Range: 0.9V to 10V
■ Dropout Voltage: 145mV Typical
■ Output Current: 1A
■ Adjustable Output (VREF = VOUT(MIN) = 200mV)
■ Fixed Output Voltages: 1.2V, 1.5V, 1.8V
■ Stable with Low ESR, Ceramic Output Capacitors (10µF Minimum)
■ 0.05% Typical Load Regulation from 1mA to 1A
■ Quiescent Current: 400µA Typical
■ 7.5µA Typical Quiescent Current in Shutdown
■ Current Limit Protection
■ Reverse-Battery Protection with No Reverse Current
■ Thermal Limiting with Hysteresis
■ 16-Lead (5mm × 3mm) DFN and MSOP Packages
APPLICATIONS
■ High Efficiency Linear Regulators
■ Battery-Powered Systems
■ Logic Supplies
■ Post Regulator for Switching Supplies
■ Wireless Modems
■ FPGA Core Supplies
