Product Summary

The LT1074HVCT#PBF is a step-down switching regulator. The power switch, all oscillator and control circuitry, and all current limit components, are included on the chip. The topology is a classic positive “buck” configuration but several design innovations allow this device to be used as a positive-to-negative converter, a negative boost converter, and as a flyback converter. The LT1074HVCT#PBF can be used in (1)buck converter with output voltage range of 2.5V to 50V; (2)tapped-inductor buck converter with 10A output at 5V; (3)positive-to-negative converter; (4)negative boost converter; (5)multiple output buck converter.

Parametrics

LT1074HVCT#PBF absolute maximum ratings: (1)Input Voltage: 64V; (2)Switch Voltage with Respect to Input Voltage: 75V; (3)Feedback Pin Voltage:–2V, +10V; (4)Shutdown Pin Voltage (Not to Exceed VIN): 40V; (5)ILIM Pin Voltage (Forced): 5.5V; (6)Maximum Operating Ambient Temperature Range: 0°C to 70°C; (7)Maximum Storage Temperature:–65°C to 150°C; (8)Lead Temperature (Soldering, 10 sec): 300°C.

Features

LT1074HVCT#PBF features: (1)5A Onboard Switch; (2)100kHz Switching Frequency; (3)Greatly Improved Dynamic Behavior; (4)Available in Low Cost 5 and 7-Lead Packages; (5)Only 8.5mA Quiescent Current; (6)Programmable Current Limit; (7)Operates Up to 60V Input; (8)Micropower Shutdown Mode.

Diagrams

LT1074HVCT#PBF dimension figure

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LT1074HVCT#PBF
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