TPS63020引脚图：
TPS63020管脚功能定义：
TPS63020应用电路原理图：
Description
The TPS6302x devices provide a power supply
solution for products powered by either a two-cell
or three-cell alkaline, NiCd or NiMH battery, or a
one-cell Li-ion or Li-polymer battery. Output
currents can go as high as 3 A while using a
single-cell Li-ion or Li-polymer battery, and
discharge it down to 2.5 V or lower. The buck-
boost converter is based on a fixed frequency,
pulse width modulation (PWM) controller using
synchronous rectification to obtain maximum
efficiency. At low load currents, the converter
enters power save mode to maintain high
efficiency over a wide load current range. The
power save mode can be disabled, forcing the
converter to operate at a fixed switching
frequency. The maximum average current in the
switches is limited to a typical value of 4 A. The
output voltage is programmable using an external
resistor divider, or is fixed internally on the chip.
The converter can be disabled to minimize
battery drain. During shutdown, the load is
disconnected from the battery.
The TPS6302x devices operate over a free air
temperature range of –40°C to 85°C. The devices
are packaged in a 14-pin VSON package
measuring 3mm × 4mm (DSJ).
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