TPS54540DDA
NRND42 V, 5 A, STEP-DOWN DC-DC CONVERTER WITH ECO-MODE
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TPS54540DDA
NRND42 V, 5 A, STEP-DOWN DC-DC CONVERTER WITH ECO-MODE
Technical Specifications
Parameters and characteristics for this part
| Specification | TPS54540DDA |
|---|---|
| Current - Output | 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 | 8-PowerSOIC |
| Package / Case [x] | 0.154 in |
| Package / Case [y] | 3.9 mm |
| Supplier Device Package | 8-SO PowerPad |
| Synchronous Rectifier | False |
| Topology | Split Rail, Buck |
| Voltage - Input (Max) [Max] | 42 V |
| Voltage - Input (Min) [Min] | 4.5 V |
| Voltage - Output (Max) [Max] | 41.1 V |
| Voltage - Output (Min/Fixed) | 0.8 V |
TPS54540B-Q1 Series
4.5-V to 42-V input, 5-A, step-down DC-DC converter with Eco-mode™
| Part | Output Type | Voltage - Input (Min) [Min] | Number of Outputs | Mounting Type | Topology | Current - Output | Voltage - Input (Max) [Max] | Supplier Device Package | Package / Case [y] | Package / Case [x] | Package / Case | Voltage - Output (Max) [Max] | Output Configuration | Function | Voltage - Output (Min/Fixed) | Synchronous Rectifier | Frequency - Switching [Max] | Frequency - Switching [Min] | Operating Temperature [Max] | Operating Temperature [Min] | Voltage - Input [Min] | Voltage - Input [Max] | Outputs and Type | Outputs and Type | Supplied Contents | Voltage - Output | Utilized IC / Part | Regulator Topology | Board Type | Frequency - Switching | Main Purpose | Grade | Qualification |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 Texas Instruments | Adjustable | 4.5 V | 1 | Surface Mount | Buck Split Rail | 5 A | 42 V | 8-SO PowerPad | 3.9 mm | 0.154 in | 8-PowerSOIC | 41.1 V | Positive | Step-Down | 0.8 V | 2.5 MHz | 100 kHz | 150 °C | -40 °C | ||||||||||||||
Texas Instruments | Adjustable | 4.5 V | 1 | Surface Mount | Buck Split Rail | 5 A | 42 V | 8-SO PowerPad | 3.9 mm | 0.154 in | 8-PowerSOIC | 41.1 V | Positive | Step-Down | 0.8 V | 2.5 MHz | 100 kHz | 150 °C | -40 °C | ||||||||||||||
 Texas Instruments | 5 A | 7 V | 42 V | Non-Isolated | 1 | Board(s) | 5 V | TPS54540-Q1 | Buck | Fully Populated | 400 kHz | DC/DC Step Down | |||||||||||||||||||||
Texas Instruments | Adjustable | 4.5 V | 1 | Surface Mount | Buck Split Rail | 5 A | 42 V | 8-SO PowerPad | 3.9 mm | 0.154 in | 8-PowerSOIC | 41.1 V | Positive | Step-Down | 0.8 V | 2.5 MHz | 100 kHz | 150 °C | -40 °C | ||||||||||||||
 Texas Instruments | 5 A | 6 V | 42 V | Non-Isolated | 1 | Board(s) | 3.3 V | Buck | Fully Populated | 400 kHz | DC/DC Step Down | ||||||||||||||||||||||
Texas Instruments | Adjustable | 4.5 V | 1 | Surface Mount | Buck Split Rail | 5 A | 42 V | 8-SO PowerPad | 3.9 mm | 0.154 in | 8-PowerSOIC | 41.1 V | Positive | Step-Down | 0.8 V | 2.5 MHz | 100 kHz | 125 °C | -40 °C | Automotive | AEC-Q100 | ||||||||||||
Texas Instruments | Adjustable | 4.5 V | 1 | Surface Mount | Buck Split Rail | 5 A | 42 V | 8-SO PowerPad | 3.9 mm | 0.154 in | 8-PowerSOIC | 41.1 V | Positive | Step-Down | 0.8 V | 150 °C | -40 °C | 500 kHz |
Pricing
Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly
| Distributor | Package | Quantity | $ | |
|---|---|---|---|---|
| Digikey | Tube | 1 | $ 6.40 | |
| 10 | $ 5.75 | |||
| 75 | $ 5.44 | |||
| 150 | $ 4.71 | |||
| 300 | $ 4.47 | |||
| 525 | $ 4.01 | |||
| 1050 | $ 3.38 | |||
| 2550 | $ 3.21 | |||
| Texas Instruments | TUBE | 1 | $ 4.83 | |
| 100 | $ 4.23 | |||
| 250 | $ 2.97 | |||
| 1000 | $ 2.39 | |||
Description
General part information
TPS54540B-Q1 Series
The TPS54540B-Q1 device is a 42-V, 5-A, step-down regulator with an integrated high-side MOSFET. The device survives load-dump pulses up to 65 V per ISO 7637. Current mode control provides simple external compensation and flexible component selection. A low-ripple pulse-skip mode reduces the no load supply current to 146 µA. Shutdown supply current is reduced to 2 µA when the enable pin is pulled low.
Undervoltage lockout is internally set at 4.3 V but can be increased using an external resistor divider at the enable pin. The output voltage start-up ramp is internally controlled to provide a controlled start-up and eliminate overshoot.
A wide adjustable frequency range allows either efficiency or external component size to be optimized. Output current is limited cycle-by-cycle. Frequency foldback and thermal shutdown protect internal and external components during an overload condition.
Documents
Technical documentation and resources