LT1074HVIT7#06PBF

LT1074HVIT7#06PBF is a 5A monolithic bipolar switching regulator that requires only a few external parts for normal operation. 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 switch output is specified to swing 40V below ground, allowing the LT1074 to drive a tapped inductor in the buck mode with output currents up to 10A. The LT1074 uses a true analogue multiplier in the feedback loop. Applications include buck converter with output voltage range of 2.5V to 50V, tapped-inductor buck converter with 10A output at 5V, positive-to-negative converter, negative boost converter, multiple output buck converter.

• Greatly improved dynamic behaviour, operates up to 60V input
• Programmable current limit, micropower shutdown mode
• Supply current is 8.5mA typical at (VFB = 2.5V, VIN ≤ 40V)
• Switching frequency is 100KHz typical at (TA = 25°C)
• Error amplifier voltage gain is 2000V/V typical at (1V ≤ VC ≤ 4V, TA = 25°C)
• Shutdown pin current is 10µA typical at (VSH = 5V, TA = 25°C)
• Reference voltage is 2.21V typical at (VC = 2V)
• Error amplifier source and sink current is 140µA typical at (TA = 25°C, source (VFB = 2V))
• Operating temperature range from -40°C to 125°C
• 7-lead plastic TO-220 package

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