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Linear Technology introduces the LT3782, a step-up DC/DC controller with 2-phase operation to deliver high output power using two inductors, eliminating the need for power and current sense transformers. The LT3782 can regulate a 50 V output at 4 A load current with 96% efficiency from an input source ranging from 10 V to 36 V. The 2-phase operation minimizes input and output ripple currents and reduces the value requirements of both the input and output capacitors. The LT3782 uses a constant frequency (150 kHz to 500 kHz) current mode architecture to improve both line and load regulation, reduce the size of inductors and capacitors and provide a precision pulse-by-pulse current limit. The LT3782 operates from a wide input range of 6 V to 40 V; the maximum output voltage is dependent on the choice of external components. Other features include soft-start to reduce inrush current and duty cycle clamp to protect the MOSFETs and improve system reliability. The LT3782 is offered in a thermally enhanced 28-lead SSOP and is rated for operation from – 40° C to 125° C.

Linear Technology Corporation

Linear Technology Corporation
1630 McCarthy Blvd.
Milpitas, CA, 95035