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2.5-V to 9-V Input Range

0.8-V to 8-V Output Range

Dual-Auto-Mode for High-Efficiency

at Light Loads

Externally Synchronizable

0% to 100% Duty Cycle

Low-Quiescient, Standby,

and Shutdown Currents

8-Pin SOIC Package

Four PWM Frequency

Versions (Maximum 2 MHz)

applications

Cellular Telephones

Satellite Telephones

GPS Devices

Digital Still Cameras

PDAs and Handheld Cameras

description

The TPS6210x family of low-power high-efficiency buck converters is designed to operate from 1 or 2 li-ion

cell battery packs. This part, with its wide input range of 2.5 V to 9 V, has an adjustable output from 0.8 V to

8 V and is capable of 500-mA output current. The TPS6210x family of synchronizable dc-to-dc converters is

available in four different operating frequencies: 300 kHz, 600 kHz, 1 MHz, and 2 MHz. The circuit can be

allowed to run at a fixed frequency, or sychronized, using the dual function SD/SYNC input pin.

The TPS6210x family is highly efficient at both low and high output currents. The tri-function MODE input pin

is used to select constant-frequency, auto-mode, or light-load modes of operation. The multimode operation

allows the IC to select the most efficient operating mode, or if desirable, the user can determine which of three

modes to operate in. In the auto-mode, the output load detector circuitry determines if the converter should be

running in the constant-frequency, heavy-load mode, or pulsed-variable frequency, light-load mode.

The TPS6210x family also has a shutdown mode for optimum battery shelf life. The IC utilizes three methods

of overload protection, including thermal shutdown and two levels of overcurrent protection. The TPS6210x is

available in the small outline 8-pin SOIC package.