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)

 
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 TPS61253 TPS61254 TPS61256 TPS61256C TPS61258 TPS61259 TPS612592
2.5     2.65     2.5     2.5     2.5     2.65     2.3     2.3    
5.5     4.85     4.35     4.85     4.85     4.85     5.5     5.5    
5     5     4.5     5     5     4.5     5.1     5.2    
5     5     4.5     5     5     4.5     5.1     5.2    
2.4     3.6     2.15     2.15     2.15     3.6     3.6     3.6    
1     1     1     1     1     1     1     1    
3500     3500     3500     3500     3500     3500     3500     3500    
3500     3500     3500     3500     3500     3500     3500     3500    
0.033     0.02     0.023     0.02     0.02     0.02     0.02     0.02    
Enable
Light Load Efficiency
Load Disconnect
Synchronous Rectification    
Enable
Light Load Efficiency
Load Disconnect    
Enable
Light Load Efficiency
Load Disconnect    
Enable
Light Load Efficiency
Load Disconnect    
Enable
Light Load Efficiency
Synchronous Rectification    
Enable
Light Load Efficiency
Load Disconnect    
Enable
Light Load Efficiency
Load Disconnect    
Enable
Light Load Efficiency
Load Disconnect    
90     100     100     100     90     100     90     90    
-40 to 85     -40 to 85     -40 to 85     -40 to 85     -40 to 85     -40 to 85     -40 to 85     -40 to 85    
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Catalog     Catalog     Catalog     Catalog     Catalog     Catalog     Catalog     Catalog    
DSBGA | 9     DSBGA | 9     DSBGA | 9     DSBGA | 9     DSBGA | 9     DSBGA | 9     DSBGA | 9     DSBGA | 9