TPS61256A 3.5-MHz High Efficiency Step-Up Converter In Chip Scale Packaging | TI.com

TPS61256A (ACTIVE) 3.5-MHz High Efficiency Step-Up Converter In Chip Scale Packaging

 

Description

The TPS61256A device provides a power supply solution for battery-powered portable applications. Intended for low-power applications, the TPS61256A supports up to 800-mA load current from a battery discharged as low as 2.7V and allows the use of low cost chip inductor and capacitors.

With a wide input voltage range of 2.5V to 5.5V, the device supports applications powered by Li-Ion batteries with extended voltage range and delivers a fixed 5.0V output voltage.

The TPS61256A 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 36µA (typ) during light load operation. Input current in shutdown mode is less than 5µA, which maximizes battery life.

The TPS61256A 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. During shutdown, the load is completely disconnected from the battery.

These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam during storage or handling to prevent electrostatic damage to the MOS gates.

Features

  • 93% Efficiency at 3.5MHz Operation
  • 36µA Quiescent Current
  • Wide VIN Range From 2.5V to 5.5V
  • IOUT ≥1000mA at VOUT = 5.0V, VIN ≥3.3V
  • ±2% Total DC Voltage Accuracy
  • Light-Load PFM Mode
  • True Load Disconnect During Shutdown
  • Thermal Shutdown and Overload Protection
  • Only Three Surface-Mount External Components Required
  • Total Solution Size <35mm2
  • 9-Pin NanoFreeTM (CSP) Packaging

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Parametrics

Compare all products in Boost converters (integrated switch) Email Download to Excel
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
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    
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    
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    
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