Datasheet

Introduction www.ti.com
1 Introduction
The TPS8125x device is an ideal power-supply solution for products powered by either a three-cell
alkaline, NiCd or NiMH battery, or a single-cell Li-Ion or Li-polymer battery. The wide input voltage range
is well-suited for portable power applications such as mobile phones or computer peripherals.
1.1 Requirements
The TPS8125xEVM is designed to produce a fixed output voltage over the full input voltage range. See
Table 1 for fixed output voltage version options. A DC power supply capable of delivering 2.50 V to 4.85 V
is required to operate this EVM. Please reference the device datasheet for the Recommended Operating
Conditions and Absolute Maximum Ratings.
1.2 Applications
• USB Host Supplies from a Single Li-Ion Battery
• USB Dedicated Charging Port Supply
• Li-Ion Applications
• Audio Applications
• RF-PA Buffers
1.3 EVM Features
• 91% Efficiency at 4.5 MHz
• V
IN
Range from 2.50 V to 4.85 V
• 0.85 μA Quiescent Current in Shutdown Mode
• 30 μA Quiescent Current in Normal Operation
• V
IN
> V
OUT
operation for Vin up to 5.5V
1.4 EVM Ordering Options
Table 1 provides the ordering Information for the various EVM options.
Table 1. TPS8125x Output Voltage Options and Ordering Information
Orderable EVM Number Device Part Number Output Voltage
PWR121-001 TPS81256 5 V
2
TPS8125xEVM SLVU653–April 2012
Submit Documentation Feedback
Copyright © 2012, Texas Instruments Incorporated