TPS54561-Q1 (ACTIVE)

Automotive 4.5V to 60V Input 5A Step-Down DC-DC Converter With Soft-Start and Eco-mode™



The TPS54561-Q1 device is a 60-V, 5-A, step-down regulator with an integrated high-side MOSFET. The device survives load dump pulses up to 65 V per ISO7637. Current-mode control provides simple external compensation and flexible component selection. A low-ripple pulse-skip mode and 152-µA supply current enables high efficiency at light loads. Pulling the enable pin low reduces shutdown supply current to 2 µA.

Undervoltage lockout has an internal 4.3-V setting. Use of an external resistor divider at the EN pin can increase the setting. The soft-start pin controls the output-voltage start-up ramp and also configures sequencing or tracking. An open-drain power-good signal indicates the output is within 93% to 106% of its nominal voltage.

A wide adjustable switching-frequency range allows optimization for either efficiency or external component size. Cycle-by-cycle current limit, frequency foldback, and thermal shutdown protect the device during an overload condition.

The TPS54561-Q1 is available in a 10-pin, 4-mm × 4-mm WSON package.


  • 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 H1C
    • Device CDM ESD Classification C5
  • High Efficiency at Light Loads With Pulse-Skipping Eco-mode™ Control
  • 87-mΩ High-Side MOSFET
  • 152-µA Operating Quiescent Current and 2-µA Shutdown Current
  • 100-kHz to 2.5-MHz Switching Frequency
  • Synchronizes to External Clock
  • Low-Dropout Operation at Light Loads With Integrated BOOT Recharge FET
  • Adjustable UVLO Voltage and Hysteresis
  • Power-Good Output Monitor for Undervoltage and Overvoltage
  • Adjustable Soft-Start and Sequencing
  • 0.8-V 1% Internal Voltage Reference
  • 10-Pin WSON With Thermal Pad Package
  • –40°C to 150°C TJ Operating Range
  • Create a Custom Design using the TPS54561-Q1 with the WEBENCH® Power Designer

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Parametrics Compare all products in Buck Converter (Integrated Switch)

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)
Control Mode
Duty Cycle (Max) (%)
Operating Temperature Range (C)
Package Group
TPS54561-Q1 TPS54561
4.5    4.5   
60    60   
0.8    0.8   
59    59   
5    5   
1    1   
100    100   
2500    2500   
1.52    0.152   
Frequency Synchronization
Light Load Efficiency
Power Good
UVLO Adjustable   
Frequency Synchronization
Light Load Efficiency
Power Good
UVLO Adjustable   
Current Mode    Current Mode   
98    98   
-40 to 125    -40 to 125   
Automotive    Catalog   

Other qualified versions of TPS54561-Q1

Version Part Number Definition
Catalog TPS54561 TI's standard catalog product
New! Interactive Design
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WEBENCH® Designer TPS54561-Q1

  Min   Max Range
Vin  V 4.5 to 60.0V
Vout  V 0.8 to 58.0V
Iout  A ≤ 5A
Ambient Temp  °C -40 to 150°C

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