| Distributor | Stock | Pricing | MOQ | PKG | Lead Time | Date Code | On Order Quantity | On Order Delivery | |
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6,000 pcs
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6000 pcs | On Request | 1 | On Request | On Request | 2018+ | On Request | On Request |
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The LTC3873-5 from LT is a constant frequency current mode controller designed for boost, flyback, or SEPIC DC/DC converters. It drives an N-channel MOSFET for high input and output voltage applications.
Key features include a constant operating frequency of 200kHz, ±1.5% output voltage accuracy, and a low quiescent current of 300µA during normal operation. It also has a 4.1V undervoltage threshold suitable for logic-level MOSFETs and an internal 9.3V shunt regulator for flexible power supply options.
This controller is available in compact 8-lead ThinSOT (TSOT-23-8) and 2mm x 3mm DFN packages, making it suitable for space-constrained designs. Applications include telecom power supplies, automotive power supplies, and PoE applications.
The internal shunt regulator provides a 9.3V supply voltage.
The LTC3873ETS8-5#TRPBF is available in TSOT-23-8 and 2mm × 3mm DFN-8 surface mount packages.
The operating temperature range is -40°C to 85°C or -40°C to 125°C depending on the package variant.
The switching frequency is fixed at 200kHz.
The voltage reference accuracy is ±1.5%.
The quiescent current is 300µA.
It is a constant frequency current mode controller.