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 × 2.9mm) and low profile BGA package suitable for automated assembly by standard surface mount equipment.


  • 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:
    • TPS8268180: 1.80V
    • TPS8268150: 1.50V
    • TPS8268120: 1.20V
    • TPS8268105: 1.05V
    • TPS8268090: 0.90V
  • Low EMI by Spread Spectrum PWM Frequency
  • Best in Class Load and Line Transient Response
  • Internal Soft Start
  • Current Overload and Thermal Shutdown Protection


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Part number Order Iout (Max) (A) Vin (Min) (V) Vin (Max) (V) Vout (Min) (V) Vout (Max) (V) Soft start Features Iq (Typ) (mA) Regulated outputs (#) Package size: mm2:W x L (PKG) Switching frequency (Max) (kHz) Switching frequency (Min) (kHz) Switching frequency (Typ) (kHz) Topology Operating temperature range (C) Duty cycle (Max) (%) Package Group Type
TPS8268090 Order now 1.6     2.5     5.5     0.9     0.9     Fixed     Enable
Output Discharge
Spread Spectrum    
7     1       5500     5500     5500     Buck
Synchronous Buck    
-40 to 85     36       Module    
TPS82671 Order now 0.6     2.3     4.8     1.8     1.8     Fixed     Enable
Light Load Efficiency
Spread Spectrum    
0.017     1     8uSiP: 7 mm2: 2.9 x 2.3 (uSiP | 8)     6000     4900     5500     Buck
Synchronous Buck    
-40 to 85     78     uSiP | 8     Module    
TPS8268120 Order now 1.6     2.5     5.5     1.2     1.2     Fixed     Enable
Output Discharge
Spread Spectrum    
7     1       5500     5500     5500     Buck
Synchronous Buck    
-40 to 85     48       Module