TPS61256C 3.5-MHz High Efficiency Step-Up Converter in Chip Scale Package | TI.com

TPS61256C (ACTIVE) 3.5-MHz High Efficiency Step-Up Converter in Chip Scale Package

 

Description

The TPS61256xC device provides a power supply solution for battery-powered portable applications. Intended for low-power applications, the TPS61256xC supports up to 800-mA load current from a battery discharged as low as 2.65 V and allows the use of low cost chip inductor and capacitors.

With a wide input voltage range of 2.3 V to 5.5 V, the device supports applications powered by Li-Ion batteries with extended voltage range. Different fixed voltage output versions are available from 3.15 V to 5.0 V.

The TPS61256xC operates at a regulated 3.5-MHz switching frequency and enters power-save mode operation at light load currents to maintain high efficiency over the entire load current range. The PFM mode extends the battery life by reducing the quiescent current to 37 µA (typ) during light load operation.

In addition, the TPS61256xC device can also support the pass-through mode by pulling EN to low. In this mode, the output voltage follows the input voltage with a voltage drop by the resistance of the inductor and high-side FET.

The TPS61256xC offers a very small solution size due to minimum amount of external components. It allows the use of small inductors and input capacitors to achieve a small solution size.

Features

  • 93% Efficiency at 3.5-MHz Operation
  • 37-µA Quiescent Current in Normal Operation
  • Wide VIN Range From 2.3 V to 5.5 V
  • Support VIN ≥ VOUT Operation
  • ±2% Total DC Voltage Accuracy
  • Light-Load PFM Mode
  • Pass-through Mode by Pulling EN Low
  • Thermal Shutdown and Overload Protection
  • Only Three Surface-Mount External Components Required
  • Total Solution Size < 25 mm2
  • 9-Pin NanoFree™ (CSP) Packaging

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Parametrics

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Part number Order Vin (Min) (V) Vin (Max) (V) Vout (Min) (V) Vout (Max) (V) Switch current limit (Typ) (A) Regulated outputs (#) Switching frequency (Min) (kHz) Switching frequency (Max) (kHz) Iq (Typ) (mA) Features Duty cycle (Max) (%) Operating temperature range (C) Type Rating Package Group
TPS61256C Order now 2.5     4.85     5     5.4     2.15     1     3500     3500     0.02     Enable
Light Load Efficiency
Synchronous Rectification    
90     -40 to 85     Converter     Catalog     DSBGA | 9    
TPS61253 Order now 2.65     4.85     5     5     3.6     1     3500     3500     0.02     Enable
Light Load Efficiency
Load Disconnect    
100     -40 to 85     Converter     Catalog     DSBGA | 9    
TPS61254 Order now 2.5     4.35     4.5     4.5     2.15     1     3500     3500     0.023     Enable
Light Load Efficiency
Load Disconnect    
100     -40 to 85     Converter     Catalog     DSBGA | 9    
TPS61256 Order now 2.5     4.85     5     5     2.15     1     3500     3500     0.02     Enable
Light Load Efficiency
Load Disconnect    
100     -40 to 85     Converter     Catalog     DSBGA | 9    
TPS61256A Order now 2.5     5.5     5     5     2.4     1     3500     3500     0.033     Enable
Light Load Efficiency
Load Disconnect
Synchronous Rectification    
90     -40 to 85     Converter     Catalog     DSBGA | 9    
TPS61258 Order now 2.65     4.85     4.5     4.5     3.6     1     3500     3500     0.02     Enable
Light Load Efficiency
Load Disconnect    
100     -40 to 85