TPS63020EVM-487: 3.3V @ 1A, 1.8 ~ 5.5V in

Summary

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 3A while using a single-cell Li-Ion or Li-Polymer Battery, and discharge it down to 2.5V 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 4A. 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.

Specifications

Manufacturer	Texas Instruments
Category	AC/DC and DC/DC Conversion
Sub-Category	DC/DC SMPS - Single Output
Eval Board Part Number	296-27260-ND
Eval Board Supplier	Texas Instruments
Eval Board	Normally In Stock
Topology	Step Up/Down
Outputs and Type	1 Non-Isolated
Voltage Out: Factory Set	3.3 V
Current Out	1 A
Voltage In	1.8 ~ 5.5 V
Efficiency @ Conditions	>87%, 5V in, 3.3V @ 0.15 ~ 3 A >85%, 5V in, 3.3V @ 0.1 ~ 2.3 A
Voltage Out Range	1.2 ~ 5.5 V
Features	Current Limit (Adj. or Fixed) Electrolytic Free Over Voltage Protection Power Good Output Power Save Mode Shutdown, Enable, Standby Soft Start Thermal Protection
Switching Frequency	2.4 MHz
Standby Current [Typical]	100 nA
Quiescent Current [Typical]	25 µA
Component Count + Extras	16 + 7
Internal Switch	Yes
Design Author	Texas Instruments
Application / Target Market	Audio: MP3 Players Cell Phones DVD/Blu-ray Players Flashlight / Torch Medical Portable Devices RF: Metering
Standby Current [Maximum]	1 µA
Quiescent Current [Maximum]	50 µA
Main I.C. Base Part	TPS63020
Date Created By Author	2010-03
Date Added To Library	2012-08