TPS82671EVM-646: 1.8V @ 600mA, 2.3 ~ 5.5V in

Summary

The TPS8267x device is a complete 600mA, DC/DC step-down power supply intended for low-power applications. Included in the package are the switching regulator, inductor and input/output capacitors. No additional components are required to finish the design.

The TPS8267x is based on a high-frequency synchronous step-down dc-dc converter optimized for battery-powered portable applications. The MicroSiP™ DC/DC converter operates at a regulated 5.5-MHz switching frequency and enters the power-save mode operation at light load currents to maintain high efficiency over the entire load current range.

The PFM mode extends the battery life by reducing the quiescent current to 17µA (typ) during light load operation. For noise-sensitive applications, the device has PWM spread spectrum capability providing a lower noise regulated output, as well as low noise at the input. These features, combined with high PSRR and AC load regulation performance, make this device suitable to replace a linear regulator to obtain better power conversion efficiency.

The TPS8267x is packaged in a compact (2.3mm x 2.9mm) and low profile (1.0mm) BGA package suitable for automated assembly by standard surface mount equipment.

Specifications

Manufacturer	Texas Instruments
Category	AC/DC and DC/DC Conversion
Sub-Category	DC/DC SMPS - Single Output
Eval Board Part Number	296-27943-ND
Eval Board Supplier	Texas Instruments
Eval Board	Normally In Stock
Topology	Step Down
Outputs and Type	1 Non-Isolated
Voltage Out: Factory Set	1.8 V
Current Out	600 mA
Voltage In	2.3 ~ 5.5 V
Efficiency @ Conditions	>85%, 2.7V in, 1.8V @ 0.5 ~ 600 mA >82%, 3.6V in, 1.8V @ 0.6mA ~ 600 mA >80%, 4.2V in, 1.8V @ 2 ~ 600 mA
Voltage Out Range	- Fixed
Features	Frequency Jitter for EMI Internal Inductor Light Load Mode Over Current Protection Short Circuit Protection 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 LCD TV / Monitor Point of Load (PoL) RF: BlueTooth RF: WLAN Access Points Set-Top Boxes
Standby Current [Maximum]	5 µA
Quiescent Current [Maximum]	40 µA
Main I.C. Base Part	TPS82671
Date Created By Author
Date Added To Library	2011-03