TPS54140ADRCT
Active3.5V TO 42V INPUT, 1.5A STEP-DOWN CONVERTER WITH ECO-MODE
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TPS54140ADRCT
Active3.5V TO 42V INPUT, 1.5A STEP-DOWN CONVERTER WITH ECO-MODE
Technical Specifications
Parameters and characteristics for this part
| Specification | TPS54140ADRCT |
|---|---|
| Current - Output | 1.5 A |
| Frequency - Switching [Max] | 2.5 MHz |
| Frequency - Switching [Min] | 100 kHz |
| Function | Step-Down |
| Mounting Type | Surface Mount |
| Number of Outputs | 1 |
| Operating Temperature [Max] | 150 °C |
| Operating Temperature [Min] | -40 °C |
| Output Configuration | Positive |
| Output Type | Adjustable |
| Package / Case | 10-VFDFN Exposed Pad |
| Supplier Device Package | 10-VSON (3x3) |
| Synchronous Rectifier | False |
| Topology | Buck |
| Voltage - Input (Max) [Max] | 42 V |
| Voltage - Input (Min) [Min] | 3.5 V |
| Voltage - Output (Max) [Max] | 39 V |
| Voltage - Output (Min/Fixed) | 0.8 V |
Pricing
Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly
| Distributor | Package | Quantity | $ | |
|---|---|---|---|---|
| Digikey | Cut Tape (CT) | 1 | $ 3.09 | |
| 10 | $ 2.77 | |||
| 25 | $ 2.62 | |||
| 100 | $ 2.27 | |||
| Digi-Reel® | 1 | $ 3.09 | ||
| 10 | $ 2.77 | |||
| 25 | $ 2.62 | |||
| 100 | $ 2.27 | |||
| Tape & Reel (TR) | 250 | $ 2.16 | ||
| 500 | $ 1.93 | |||
| 1250 | $ 1.63 | |||
| 2500 | $ 1.55 | |||
| 6250 | $ 1.49 | |||
| Texas Instruments | SMALL T&R | 1 | $ 2.58 | |
| 100 | $ 2.13 | |||
| 250 | $ 1.53 | |||
| 1000 | $ 1.15 | |||
Description
General part information
TPS54140A Series
The TPS54140 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, the 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 and tracking. An open-drain power-good signal indicates the output is within 94% to 107% of the nominal voltage.
A wide switching frequency range allows efficiency and external component size to be optimized. Frequency foldback and thermal shutdown protects the device during an overload condition.
Documents
Technical documentation and resources
