Description

The TPS63060DSCT device is a power supply for products that use three-cell to six-cell alkaline, NiCd, or NiMH batteries, as well as one-cell or dual-cell Li-Ion or Li-polymer batteries. When using a dual-cell Li-Ion or Li-polymer battery, output currents can reach 2 A and drain to 5 V or lower. 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 switches' maximum average current is limited to a typical value of 2.25 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 disconnects from the battery during the shutdown.

The devices come in a 10-pin WSON (DSC) package with dimensions of 3 mm x 3 mm.

Features

? Power good output

? Buck-Boost Overlap Control?

? Load disconnect during shutdown

? Overtemperature protection

? Overvoltage protection

? Automatic transition between step down and boost mode

? Typical device quiescent current: < 30 μA

? Fixed and adjustable output voltage options from 2.5 V to 8 V

? Power save mode for improved efficiency at low output power

? Forced fixed-frequency operation at 2.4 MHz and synchronization possible

? Input voltage range: 2.5 V to 12 V

? Efficiency: Up to 93%

? Output current at 5 V (VIN < 10 V): 2 A in buck mode

? Output current at 5 V (VIN > 4 V): 1.3 A in boost mode

Applications

? Industrial metering equipment

? Ultra mobile PCs and mobile internet devices

? Personal medical products

? High-power LEDs

? Dual Li-ion application

? Digital still cameras (DSC) and camcorders

? Notebook computer