TPS82672EVM-646: 1.5V @ 600mA, 2.3 ~ 4.8V in

Summary

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 600mA load current and the TPS8269 support up to 500mA and all allow the use of low-cost chip inductors and capacitors.

With a wide input voltage range of 2.3V to 4.8V, 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 17µA (typ) during light load operation.

Specifications

Manufacturer Texas Instruments
Category AC/DC and DC/DC Conversion
Sub-Category DC/DC SMPS - Single Output
Eval Board Part Number 296-30303-ND
Eval Board Supplier Texas Instruments
Eval Board Board not Stocked
Topology Step Down
Outputs and Type 1 Non-Isolated
Voltage Out: Factory Set 1.5 V
Current Out 600 mA
Voltage In 2.3 ~ 4.8 V
Efficiency @ Conditions >90%, 2.7V in, 1.8V @ 10 ~ 300 mA
>85%, 4.2V in, 1.8V @ 10 ~ 300 mA
Voltage Out Range - Fixed
Features Light Load Mode
Over Current Protection
PFM or PWM
Shutdown, Enable, Standby
Soft Start
Thermal Protection
Under Voltage Protection, Brown-Out
Switching Frequency 5.5 MHz
Standby Current [Typical] 500 nA
Quiescent Current [Typical] 17 µA
Component Count + Extras 2 + 10
Internal Switch Yes
Design Author Texas Instruments
Application / Target Market Cell Phones
Point of Load (PoL)
Standby Current [Maximum] 5 µA
Quiescent Current [Maximum] 40 µA
Main I.C. Base Part TPS82672
Date Created By Author 2010-10
Date Added To Library 2012-12

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