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The TPS6306x devices provide a power solution for products powered by 3-cell (up to 6-cell) alkaline, nickel-cadmium (NiCd), or nickel-metal hydride (NiMH) batteries, or one-cell Li-Ion or Li-polymer batteries . When using a dual Li-Ion or Li-Polymer battery, the output current can be boosted to 2A and the battery voltage can be discharged to 5V or lower. This buck-boost converter is based on a fixed frequency, pulse width modulated controller that uses synchronous rectification for maximum efficiency. At low load current conditions, the converter enters a power saving mode to maintain high efficiency over a wide load current range. The power saving mode can be disabled, forcing the converter to operate at a fixed switching frequency. The maximum average current in the switch is limited to 2.5A (typ). The output voltage can be programmed using an external resistor divider or fixed internally on the chip. The converter can be disabled to greatly reduce battery consumption. During shutdown, the load is disconnected from the battery. The device is packaged in a 10-pin Small Outline (SON) PowerPAD package. In a 3mm x 3mm package (DSC).

characteristic

Up to 93% Efficiency_5V Buck Mode Output Current 2A/1A

1.3A output current in 5V boost mode (VIN>4V)

Automatic transition between buck and boost modes

Typical device quiescent current is less than 30µA

Input Voltage Range: 2.5V to 12V

2.5V to 8V Fixed and Adjustable Output Voltage Options

Power saving mode for improved efficiency at low output power

2.4MHz Forced Fixed Operating Frequency and Synchronization

Power good output

Buck-Boost Interleaved Control

Load disconnection during shutdown

Over temperature protection

Overvoltage protection

Available in a 3mm x 3mm Small Outline (SON)-10 package