| Distributor | Stock | Pricing | MOQ | PKG | Lead Time | Date Code | On Order Quantity | On Order Delivery | |
|---|---|---|---|---|---|---|---|---|---|
|
4,741 pcs
|
4741 pcs | On Request | 1 | On Request | On Request | 19+ | On Request | On Request |
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The Texas Instruments LM3478MAX is a versatile DC-DC controller IC supporting Boost, SEPIC, and Flyback topologies. It is engineered for high efficiency and operates across a wide input voltage range from 2.97V to 40V.
Key electrical specifications include current mode control, an adjustable output voltage up to 500V, and a maximum duty cycle of 100%. The device features adjustable current limit, enable functionality, frequency synchronization, and light-load efficiency optimizations. It also includes nonsynchronous rectification and prebias startup capabilities.
Operating within a temperature range of -40°C to 125°C, the LM3478MAX is available in 8-lead SOIC and VSSOP packages. These surface-mount packages offer different footprints, with the SOIC measuring 29.4 mm² and the VSSOP measuring 14.7 mm².
Additional features include an internal push-pull driver with 1A peak current, frequency compensation optimized with a capacitor and resistor, internal soft start, and undervoltage lockout with hysteresis. The adjustable clock frequency can be set between 100kHz and 1MHz, with an internal reference of ±2.5% over temperature. The shutdown current is a low 10µA over temperature.
| Qty | Low | High |
|---|---|---|
| 1+ | $2.21 | $2.21 |
Estimated market price range - modelled values for guidance only, not live distributor offers.
The input voltage range is from 2.97V to 40V.
The maximum output voltage is 500V.
The LM3478MAX uses current mode control.
The typical quiescent current is 2.7 mA.
The operating temperature range is -40°C to 125°C.
The LM3478MAX is available in SOIC and VSSOP packages.