TPS54340BDDAR
Active42-V INPUT, 3.5-A, STEP-DOWN DC/DC CONVERTER WITH ECO-MODE™
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TPS54340BDDAR
Active42-V INPUT, 3.5-A, STEP-DOWN DC/DC CONVERTER WITH ECO-MODE™
Technical Specifications
Parameters and characteristics for this part
| Specification | TPS54340BDDAR |
|---|---|
| Current - Output | 3.5 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 | 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 |
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 | $ 5.20 | |
| 10 | $ 3.47 | |||
| 25 | $ 3.03 | |||
| 100 | $ 2.52 | |||
| 250 | $ 2.28 | |||
| 500 | $ 2.13 | |||
| 1000 | $ 2.01 | |||
| Digi-Reel® | 1 | $ 5.20 | ||
| 10 | $ 3.47 | |||
| 25 | $ 3.03 | |||
| 100 | $ 2.52 | |||
| 250 | $ 2.28 | |||
| 500 | $ 2.13 | |||
| 1000 | $ 2.01 | |||
| Tape & Reel (TR) | 2500 | $ 1.88 | ||
| 5000 | $ 1.81 | |||
| Texas Instruments | LARGE T&R | 1 | $ 2.93 | |
| 100 | $ 2.57 | |||
| 250 | $ 1.80 | |||
| 1000 | $ 1.45 | |||
Description
General part information
TPS54340B-Q1 Series
The TPS54340-Q1 device is a 42-V, 3.5-A, step-down regulator with an integrated high-side MOSFET. The device survives load-dump pulses up to 45 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 1 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 for optimization of either efficiency or external component size. Frequency foldback and thermal shutdown protects internal and external components during an overload condition.
Documents
Technical documentation and resources
