Introduction

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1

Introduction

The TPS82671, TPS82672, TPS82675, TPS82690 and TPS82695 devices are series of high-frequency,

synchronous, step-down dc-dc converters optimized for battery-powered portable applications. Intended

for low-power applications, the TPS8267x support up to 600-mA load current and the TPS8269 support up

to 500-mA and all allow the use of low-cost chip inductors and capacitors. With a wide input voltage range

of 2.3 V to 4.8 V, the devices support applications powered by lithium-ion (Li-Ion) batteries with extended

voltage ranges. Different fixed voltage output versions of the TPS826xx are available. These converters

operate at a regulated 5.5-MHz (TPS8267x) and 4-MHz (TPS8269x) switching frequency and enter a

power-save mode operation under light load currents in order to maintain high efficiency over the entire

load current range. A PFM mode extends the battery life by reducing the quiescent current to 17

µA (typ)

during light load operation.

1.1

Features

•

Input voltage range: 2.3 V up to 4.8 V

•

Fixed output voltages

•

Up to 600-mA output current (TPS8267x)

•

Up to 500-mA output current (TPS8269x)

•

5.5-MHz regulated frequency operation (TPS8267x)

•

4-MHz regulated frequency operation (TPS8269x)

•

Output capacitor discharge (optional)

•

Total solution size:

< 6.7 mm

2

1.2

Applications

•

Cell phones, smart phones

•

•

DTV tuners

•

Point-of-Load (PoL) applications

1.3

EVM Ordering Options

Table 1 provides the ordering information for the various EVM options.

Table 1. Ordering Information

Maximum Output

Orderable EVM Number

Device Part Number

Output Voltage

Current

TPS82671EVM-646

TPS82671

1.8 V

600 mA

TPS82672EVM-646

TPS82672

1.5 V

600 mA

TPS82675EVM-646

TPS82675

1.2 V

600 mA

TPS82690EVM-646

TPS82690

2.8 V

500 mA

TPS82695EVM-646

TPS82695

2.5 V

500 mA

2

TPS826xxEVM

SLVU383D

– October 2010 – Revised November 2011

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