SLVS776B January 2009 – November 2014 TPS61220 , TPS61221 , TPS61222
PRODUCTION DATA.
- 1 Features
- 2 Applications
- 3 Description
- 4 Simplified Schematic
- 5 Revision History
- 6 Pin Configuration and Functions
- 7 Specifications
- 8 Parameter Measurement Information
- 9 Detailed Description
- 10Applications and Implementation
- 11Power Supply Recommendations
- 12Layout
- 13Device and Documentation Support
- 14Mechanical, Packaging, and Orderable Information
1 Features
- Up to 95% Efficiency at Typical Operating Conditions
- 5.5 μA Quiescent Current
- Startup Into Load at 0.7 V Input Voltage
- Operating Input Voltage from 0.7 V to 5.5 V
- Pass-Through Function during Shutdown
- Minimum Switching Current 200 mA
- Protections:
- Output Overvoltage
- Overtemperature
- Input Undervoltage Lockout
- Adjustable Output Voltage from 1.8 V to 6 V
- Fixed Output Voltage Versions
- Small 6-pin SC-70 Package
2 Applications
- Battery Powered Applications
- 1 to 3 Cell Alkaline, NiCd or NiMH
- 1 cell Li-Ion or Li-Primary
- Solar or Fuel Cell Powered Applications
- Consumer and Portable Medical Products
- Personal Care Products
- White or Status LEDs
- Smartphones
3 Description
The TPS6122x family devices provide a power-supply solution for products powered by either a single-cell, two-cell, or three-cell alkaline, NiCd or NiMH, or one-cell Li-Ion or Li-polymer battery. Possible output currents depend on the input-to-output voltage ratio. The boost converter is based on a hysteretic controller topology using synchronous rectification to obtain maximum efficiency at minimal quiescent currents. The output voltage of the adjustable version can be programmed by an external resistor divider, or is set internally to a fixed output voltage. The converter can be switched off by a featured enable pin. While being switched off, battery drain is minimized. The device is offered in a 6-pin SC-70 package (DCK) measuring 2 mm x 2 mm to enable small circuit layout size.
Device Information(1)
| PART NUMBER | PACKAGE | BODY SIZE (NOM) |
|---|---|---|
| TPS61220 | SC-70 (6) | 2.00mm x 1.25mm |
| TPS61221 | ||
| TPS61222 |
- For all available packages, see the orderable addendum at the end of this document.
4 Simplified Schematic
