TPS54240-Q1 Automotive 3.5V to 42V, 2.5A Buck Converter with Eco-Mode™ | TI.com

TPS54240-Q1
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Automotive 3.5V to 42V, 2.5A Buck Converter with Eco-Mode™

 

Description

The TPS54240-Q1 device is a 42-V, 2.5-A, step-down regulator with an integrated high-side MOSFET. Current-mode control provides simple external compensation and flexible component selection. A low-ripple pulse-skip mode reduces the no-load, regulated-output supply current to 138 µA. Using the enable pin, shutdown supply current is reduced to 1.3 µA when the enable pin is low.

Undervoltage lockout is internally set at 2.5 V, but can be increased using the enable pin. The output voltage start-up ramp is controlled by the slow-start pin that can also be configured for sequencing/tracking. An open-drain power-good signal indicates the output is within 94% to 107% of its nominal voltage.

A wide switching-frequency range allows efficiency and external component size to be optimized. Frequency foldback and thermal shutdown protects the part during an overload condition.

The TPS54240-Q1 is available in a 10-pin thermally enhanced MSOP PowerPAD package.

Features

  • Qualified for Automotive Applications
  • AEC Q100 Qualified With the Following Results:
    • Device Temperature Grade 1:
      –40°C to 125°C Ambient Operating
      Temperature Range
    • Device HBM ESD Classification Level H2
    • Device CDM ESD Classification Level C6
  • 3.5-V to 42-V Input Voltage Range
  • 200-mΩ High-Side MOSFET
  • High Efficiency at Light Loads With a
    Pulse-Skipping Eco-mode Control Scheme
  • 138-µA Operating Quiescent Current
  • 1.3-µA Shutdown Current
  • 100-kHz to 2.5-MHz Switching Frequency
  • Synchronizes to External Clock
  • Adjustable Slow Start/Sequencing
  • UV and OV Power-Good Output
  • Adjustable UVLO Voltage and Hysteresis
  • 0.8-V Internal Voltage Reference
  • MSOP10 PowerPAD Package
  • Supported by SwitcherPro Software Tool
    (http://focus.ti.com/docs/toolsw/folders/print/switcherpro.html)
  • For SWIFT Documentation, See the TI Web site at http://www.ti.com/swift

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WEBENCH® Designer TPS54240-Q1

  Min   Max Range
Vin  V 3.5 to 42.0V
Vout  V 0.8 to 39V
Iout  A ≤ 2.5A
Ambient Temp  °C -40 to 125°C

Parametrics

Compare all products in Buck converters (integrated switch) Email Download to Excel
Part number Order Vin (Min) (V) Vin (Max) (V) Vout (Min) (V) Vout (Max) (V) Iout (Max) (A) Regulated outputs (#) Switching frequency (Min) (kHz) Switching frequency (Max) (kHz) Iq (Typ) (mA) Features Control mode Duty cycle (Max) (%) Operating temperature range (C) Rating Package Group Type Package size: mm2:W x L (PKG)
TPS54240-Q1 Order now 3.5     42     0.8     39     2.5     1     100     2500     0.138     Enable
Frequency Synchronization
Light Load Efficiency
Over Current Protection
Power Good
Tracking
UVLO Adjustable
Soft Start Adjustable    
Current Mode     100     -40 to 125     Automotive     HVSSOP | 10
VSON | 10    
Converter     10HVSSOP: 15 mm2: 4.9 x 3 (HVSSOP | 10)
10VSON: 9 mm2: 3 x 3 (VSON | 10)    
LMR14020-Q1 Order now 4     40     0.8     28     2     1     200     2500     0.04     Enable
Frequency Synchronization
Light Load Efficiency
Pre-Bias Start-Up
Tracking
UVLO Adjustable
Power Good
Soft Start Adjustable    
Current Mode     98     -40 to 125     Automotive     SO PowerPAD | 8
WSON | 10    
Converter     8SO PowerPAD: 19 mm2: 3.9 x 4.89 (SO PowerPAD | 8)
10WSON: 16 mm2: 4 x 4 (WSON | 10)    
LMR14030-Q1 Order now 4     40     1     30     3.5     1     200     2500     0.04     Enable
Frequency Synchronization
Light Load Efficiency
Pre-Bias Start-Up
Tracking
UVLO Adjustable
Power Good
Soft Start Adjustable    
Current Mode     98     -40 to 125     Automotive     SO PowerPAD | 8
WSON | 10    
Converter     8SO PowerPAD: 19 mm2: 3.9 x 4.89 (SO PowerPAD | 8)
10WSON: 16 mm2: 4 x 4 (WSON | 10)    
LMR14050-Q1 Order now 4     40     0.8     28     5     1     200     2500     0.04     Enable
Frequency Synchronization
Light Load Efficiency
Pre-Bias Start-Up
Tracking
UVLO Adjustable
Power Good
Soft Start Adjustable    
Current Mode     98     -40 to 125     Automotive     SO PowerPAD | 8
WSON | 10    
Converter     8SO PowerPAD: 19 mm2: 3.9 x 4.89 (SO PowerPAD | 8)
10WSON: 16 mm2: 4 x 4 (WSON | 10)