Description
The TPS63020DSJT is a power supply for products that use two- or three-cell alkaline, NiCd, or NiMH batteries, one-cell Li-ion or Li-polymer batteries, supercapacitors, or other supply rails. The device can handle output currents of up to 3 A. Batteries can be drained to below 2 volts when used. To achieve optimal efficiency, the buck-boost converter is based on a fixed frequency, pulse width modulation (PWM) controller with synchronous rectification. The converter enters power-save mode at low load currents to maintain high efficiency over a wide load current range. The converter can be forced to operate at a fixed switching frequency if the power saves feature is disabled. The maximum average current in the switches is usually limited to 4 A. The output voltage can be customizable or fixed on the chip using an external resistor divider. To save battery life, the converter can be turned off. The load is separated from the battery during the shutdown.
The TPS63020DSJT gadget works in a temperature range of –40°C to 85°C in the open air. The devices come in a 14-pin VSON package with dimensions of 3 mm x 4 mm (DSJ).
Features
? Power good output
? Safety and robust operation features
– Overtemperature, overvoltage protection
– Load disconnect during shutdown
? Create a custom design using the
– TPS63020 with WEBENCH Power Designer
– TPS63021 with WEBENCH Power Designer
? Input voltage range: 1.8 V to 5.5 V
? Adjustable output voltage: 1.2 V to 5.5 V
? Output current for VIN > 2.5 V, VOUT = 3.3 V: 2 A
? High efficiency over the entire load range
– Operating quiescent current: 25 μA
– Power save mode with mode selection
? Average current mode buck-boost architecture
– Automatic transition between modes
– Fixed frequency operation at 2.4 MHz
– Synchronization possible
Applications
? Pre-regulation in battery-powered devices: EPOS (portable data terminal, barcode scanner), e-cigarette, single-board computer, IP network camera, video doorbell, land mobile radios
? Voltage stabilizer: wired communication, wireless communication, PLC, optical module
? Backup supercapacitor supply: electricity meter, solid-state drive (SSD) - enterprise
