LT3503EDCB#TRMPBF

LT3503 is a current mode PWM step-down DC/DC converter with an internal 1.45A power switch. The wide operating input range of 3.6V to 20V makes the device ideal for regulating power from a wide variety of sources. 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. It is widely used in application such as automotive battery regulation, industrial control supplies, wall transformer regulation, distributed supply regulation, battery-powered equipment etc.

• Feedback voltage is 780mV typical (VIN = 12V, VBOOST = 17V)
• Short-circuit robust, soft-start, internally compensated
• Low VCESAT switch is 400mV typical at 1A
• Quiescent current is 1.9mA typical at (VIN = 12V, VBOOST = 17V)
• Quiescent current in shutdown is 2µA maximum at (VSHDN = 0V)
• Switching frequency is 2.2MHz typical at (VFB = 0.7V)
• Maximum duty cycle is 81% typical at (VIN = 12V, VBOOST = 17V)
• Switch current limit is 1.75A typical at (VIN = 12V, VBOOST = 17V)
• Operating temperature is -40°C to 85°C
• Package style is 6-lead plastic DFN

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