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3.5V to 42V Input, 1.5A Step-Down Converter with Eco-Mode

Inventory: 3,170

Download data sheet for TPS54140A
  |   View additional information for TPS54140A

Packaging information

Package | Pins HVSSOP (DGQ) | 10
Operating temperature range (℃) S (-40 to 125)
Package qty | Carrier: 80 | TUBE
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Quality information

RoHS Yes
Lead finish / Ball material NIPDAUAG
MSL rating / Peak reflow Level-1-260C-UNLIM
Material content View
DPPM / MTBF / Fit rate View
Qualification summary View
Ongoing reliability monitoring View
Device marking View


  • 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™
  • Tighter Enable Threshold than TPS54140 for
    More Accurate UVLO Voltage
  • Adjustable UVLO Voltage and Hysteresis
  • 116-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
  • 0.8-V Internal Voltage Reference
  • MSOP10 and 3-mm × 3-mm VSON-10 Package
    With PowerPAD™
  • Supported by WEBENCH® and SwitcherPro™
    Software Tool


The TPS54140A device is a 42-V, 1.5-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 116 µA. Using the enable pin, shutdown supply current is reduced to 1.3 µA.

Undervoltage lockout is internally set at 2.5 V, but can be increased using the enable pin. The output voltage startup 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 fold back and thermal shutdown protects the part during an overload condition.

Qty Price
1-99 $2.03
100-249 $1.78
250-999 $1.25
1,000+ $1.00

Alternative carriers

Part number TPS54140ADGQR
Package qty | Carrier 2,500 | LARGE T&R
Custom reel may be available
Inventory 22,292
Qty | Price (USD) 1ku | $0.84