TPS61240-Q1 (ACTIVE)

Automotive 2.3V to 5.5V Input Range, 3.5 MHz Fixed Frequency 450mA Boost Converter

 

Description

The TPS61240-Q1 device is a high efficient synchronous step up DC-DC converter optimized for products powered by either a three-cell alkaline, NiCd or NiMH, or one-cell Li-Ion or Li-Polymer battery. The TPS61240-Q1 supports output currents up to 450 mA. The TPS61240-Q1 has an input valley current limit of 500 mA.

TPS61240-Q1 device provides fixed output voltage of 5V-typ with an input voltage range of 2.3 V to 5.5 V and the device supports batteries with extended voltage range. During shutdown, the load is completely disconnected from the battery. The TPS61240-Q1 boost converter is based on a quasi-constant on-time valley current mode control scheme.

The TPS61240-Q1 presents a high impedance at the VOUT pin when shut down. This allows for use in applications that require the regulated output bus to be driven by another supply while the TPS61240-Q1 is shut down.

During light loads the device will automatically pulse skip allowing maximum efficiency at lowest quiescent currents. In the shutdown mode, the current consumption is reduced to less than 1 µA.

TPS61240-Q1 allows the use of a small inductor and capacitors to achieve a small solution size. The TPS61240-Q1 is available in a 2 mm × 2 mm WSON package.

Features

  • Qualified for Automotive Applications
  • AEC-Q100 Qualified With the Following Results:
    • Device Temperature Grade
      • TPS61240IDRVRQ1: Grade 3, –40°C to +85°C Ambient Operating Temperature
      • TPS61240TDRVRQ1: Grade 2, –40°C to +105°C Ambient Operating Temperature
    • Device HBM ESD Classification Level 2
    • Device CDM ESD Classification Level C6
  • Efficiency > 90% at Nominal Operating Conditions
  • Total DC Output Voltage Accuracy 5 V ±2%
  • Typical 30 µA Quiescent Current
  • Best in Class Line and Load Transient
  • Wide VIN Range From 2.3 V to 5.5 V
  • Output current up to 450 mA
  • Automatic PFM/PWM Mode transition
  • Low Ripple Power Save Mode for Improved Efficiency at Light Loads
  • Internal Softstart, 250 µs typical Start-Up time
  • 3.5 MHz Typical Operating Frequency
  • Load Disconnect During Shutdown
  • Current Overload and Thermal Shutdown Protection
  • Only Three Surface-Mount External Components Required (One MLCC Inductor, Two Ceramic Capacitors)
  • Total Solution Size < 13 mm2
  • Available in a 2 mm × 2 mm WSON Package

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Parametrics Compare all products in Boost Converter (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)
Rating
Package Group
TPS61240-Q1 TPS61029-Q1 TPS61040-Q1 TPS61041-Q1 TPS61071-Q1
2.3    0.9    1.8    1.8    0.9   
5.5    5.5    6    6    5.5   
5    1.8    1.8    1.8    1.8   
5    5.5    28    28    5.5   
0.6    1.8    0.4    0.25    0.7   
1    1    1    1    1   
3500    480        1200   
3500    600    1000    1000    1200   
0.03    0.025    0.028    0.028    0.019   
Enable
Light Load Efficiency
Load Disconnect   
Enable
Light Load Efficiency
Load Disconnect
Power Good
Synchronous Rectification   
Enable    Enable    Synchronous Rectification   
100    100    88    88    100   
-40 to 105
-40 to 85   
-40 to 125    -40 to 125    -40 to 125    -40 to 105   
Automotive    Automotive    Automotive    Automotive    Automotive   
WSON    VSON    SOT-23    SOT-23    SOT-23-THIN   

Other qualified versions of TPS61240-Q1

Version Part Number Definition
Catalog TPS61240 TI's standard catalog product

WEBENCH® Designer TPS61240-Q1

  Min   Max Range
Vin  V 2.30 to 4.90V
Product Option
Vout  V 5.00 to 5.00V
Iout  A 0.0001 to 0.65A
Ambient Temp  °C -40.0 to 85.0°C