SLVSBR0C October 2014 – June 2015 TPS8268090 , TPS8268105 , TPS8268120 , TPS8268150 , TPS8268180
PRODUCTION DATA.
- 1 Features
- 2 Applications
- 3 Description
- 4 Revision History
- 5 Device Comparison Table
- 6 Pin Configuration and Functions
- 7 Specifications
- 8 Detailed Description
- 9 Application and Implementation
- 10Power Supply Recommendations
- 11Layout
- 12Device and Documentation Support
- 13Mechanical, Packaging, and Orderable Information
1 Features
- Wide VIN Range From 2.5V to 5.5V
- Total Solution Size < 6.7 mm2
- Sub 1-mm Profile Solution
- ±1.5% DC Voltage Accuracy
- Up to 1600-mA Load Current
- Up to 90% Efficiency
- Fixed Output Voltage:
- Low EMI by Spread Spectrum PWM Frequency Dithering
- Best in Class Load and Line Transient Response
- Internal Soft Start
- Current Overload and Thermal Shutdown Protection
2 Applications
- Optical Modules
- Cell Phones, Smart-Phones
- Solid State Disk Drive Applications
- Space constrained applications
3 Description
The TPS8268x device is a complete DC/DC step-down power supply optimized for small solution size. Included in the package are the switching regulator, inductor and input/output capacitors. Integration of all passive components enables a tiny solution size of only 6.7mm2.
The TPS8268x is based on a high-frequency synchronous step-down dc-dc converter optimized for battery-powered portable applications in which high load currents in a very small solution size and height are required. The TPS8268x is optimized for high efficiency and low output voltage ripple and supports up to 1600-mA load current. With an input voltage range of 2.5-V to 5.5-V, the device supports applications powered by Li-Ion batteries as well as 5-V and 3.3-V rails.
The TPS8268x operates at a 5.5-MHz switching frequency with spread spectrum capability. For noise-sensitive applications, this provides a lower noise regulated output, as well as low noise at the input. The device supports a fixed output voltage, requiring no external feedback network.
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 with the same size.
The TPS8268x is packaged in a compact (2.3mm x 2.9mm) and low profile BGA package suitable for automated assembly by standard surface mount equipment.
Device Information(1)
| PART NUMBER | PACKAGE | BODY SIZE (NOM) |
|---|---|---|
| TPS8268180 | µSIP | 2.30 mm × 2.90 mm |
| TPS8268150 | µSIP | 2.30 mm × 2.90 mm |
| TPS8268120 | µSIP | 2.30 mm × 2.90 mm |
| TPS8268105 | µSIP | 2.30 mm × 2.90 mm |
| TPS8268090 | µSIP | 2.30 mm × 2.90 mm |
- For all available packages, see the orderable addendum at the end of the datasheet.
.
Typical Application
Efficiency vs Load Current for TPS8268180
