LT1933HDCB#TRMPBF

LT1933HDCB#TRMPBF is a current mode PWM step-down DC/DC converter with an internal 0.75A power switch. The wide input range of 3.6V to 36V makes the device suitable for regulating power from a wide variety of sources, including unregulated wall transformers, 24V industrial supplies and automotive batteries. Its high operating frequency allows the use of tiny, low-cost inductors and ceramic capacitors, resulting in low, predictable output ripple. Cycle-by-cycle current limit provides protection against shorted outputs, and soft-start eliminates input current surge during start-up. The low current (<2μA) shutdown provides output disconnect, enabling easy power management in battery-powered systems. Applications include automotive battery regulation, industrial control supplies, wall transformer regulation, distributed supply regulation, battery-powered equipment.

• Wide input voltage range from 3.6V to 36V, uses tiny capacitors and inductors
• Soft-start, internally compensated, output adjustable down to 1.25V
• FB pin bias current is 40nA typical at (VFB = measured VREF + 10mV)
• Quiescent current is 1.6mA typical at (not switching, TA = 25°C)
• Quiescent current in shutdown is 0.01μA typical at (active-low VSHDN = 0V)
• Switching frequency is 500KHz typical at (VFB = 1.1V, TA = 25°C)
• Switch current limit is 1.05A typical at (TA = 25°C)
• Reference line regulation is 0.01%/V typical at (VIN = 5V to 36V, TA = 25°C)
• BOOST pin current is 1.8mA typical at (ISW = 400mA, TA = 25°C)
• Operating temperature range from -40°C to 150°C, 6-lead plastic DFN package

Notes

ADI products are only authorized (and sold) for use by the customer and are not to be resold or otherwise passed on to any third party