Features: ` High-Efficiency Synchronous Step-Down,Converter With up to 95% Efficiency
` 2.5-V to 6-V Input Voltage Range
` Adjustable Output Voltage Range From 0.7 V to VI
` Fixed Output Voltage Options Available
` Up to 400-mA Output Current
` 1.25-MHz Fixed Frequency PWM Operation
` Highest Efficiency Over Wide Load Current Range Due to Power-Save Mode
` 15-A Typical Quiescent Current
` Soft Start
` 100% Duty Cycle Low-Dropout Operation
` Dynamic Output-Voltage Positioning range.
` Available in TSOT23 Package
Application· PDAs and Pocket PC
· Cellular Phones, Smart Phones
· OMAP™ and Low Power DSP Supply
· Digital Cameras
· Portable Media Players
· Portable Equipment
· WLAN PC CardsPinout
Specifications
| |
|
TPS6222x |
UNIT |
| VI |
Supply voltage on pin (2) |
-0.3 to 7.0 |
V |
| |
Voltages on pins SW, EN, FB (2) |
-0.3 to VI +0.3 |
|
| PD |
Continuous power dissipation |
See Dissipation Rating Table |
| TJ |
Operating junction temperature range |
-40 to 150 |
°C |
| Tstg |
Storage temperature |
-65 to 150 |
°C |
| |
Lead temperature (soldering, 10 sec) |
260 |
°C |
(1) Stresses beyond those listed under "absolute maximum ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under recommended operating conditions" is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
(2) All voltage values are with respect to network ground terminal.
DescriptionThe TPS6222x devices are a family of high-efficiency, Converter With up to 95% Efficiency synchronous step-down converters ideally suited for portable systems powered by 1-cell Li-Ion or 3-cell NiMH/NiCd batteries. The TPS6222x is also suitable to operate from a standard 3.3-V or 5-V voltage rail.
With an output voltage range of 6 V down to 0.7 V and up to 400-mA output current, the TPS6222x is ideal for powering the low voltage TMS320™ DSP family and processors used in PDAs, pocket PCs, and smart phones. Under nominal load current, the Range Due to Power-Save Mode devices operate with a fixed switching frequency of typically 1.25 MHz. At light load currents, the part enters the power-save mode operation; the switching is therefore, the TPS6222x achieves the highest efficiency over the entire load current. The TPS6222x needs only three small Together with the tiny TSOT23 package, a minimum system solution size can be achieved. An advanced fast response voltage mode control scheme achieves superior line and load rceagpualcaittioorns. with
TPS62228, Data Sheet
