TPS62202

Features:

 High Efficiency Synchronous Step-Down Converter With up to 95% Efficiency
 2.5 V to 6.0 V Input Voltage Range
 Adjustable Output Voltage Range From 0.7 V to VI
 Fixed Output Voltage Options Available
 Up to 300 mA Output Current
 1 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
 Available in a Tiny 5-Pin SOT23 Package


Application

 PDAs and Pocket PC
 Cellular Phones, Smart Phones
 Low Power DSP Supply
 Digital Cameras
 Portable Media Players
 Portable Equipment


Pinout




Specifications

Supply voltages, VI (see Note 1) . . . . . . . . . . . . . . 0.3 V to 7.0 V
Voltages on pins SW, EN, FB (see Note 1) . . 0.3 V to VCC +0.3 V
Continuous power dissipation, PD .  . See Dissipation Rating Table
Operating junction temperature range, TJ . . . . . 40°C to 85°C
Storage temperature, Tstg .. . . . . . . . . . . . . . . 65°C to 150°C
Lead temperature (soldering, 10 sec)  . . . . . . . . . . . . . . . 260°C


Description

The TPS6220x devices are a family of high-efficiency synchronous step-down converters ideally suited for portable systems powered by 1-cell Li-Ion or 3-cell NiMH/NiCd batteries. The TPS6220x is also suitable to operate from a standard 3.3-V or 5-V voltage rail.

With an output voltage range of 6.0 V down to 0.7 V and up to 300 mA output current ,the TPS6220x is ideal to power low voltage DSPs and processors used in PDAs,pocket PCs, and smart phones. Under nominal load current, the TPS6220x operate with a fixed switching frequency of typically 1 MHz. At light load currents, the part enters the power save mode operation; the switching frequency is reduced and the quiescent current is typically only 15 A; therefore it achieves the highest efficiency over the entire load current range.The TPS6220x needs only three small external components. Together with the tiny SOT23 package, a minimum system solution size can be achieved. An advanced fast response voltage mode control scheme achieves superior line and load regulation with small ceramic input and output capacitors.