LM3503 PDF Datasheet


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Description

This is Dual-Display Constant Current LED Driver. LM3503 Dual-Display Constant Current LED Driver with Analog Brightness Control July 2005 LM3503 Dual-Display Constant Current LED Driver with Analog Brightness Control General Description The LM3503 is a white LED driver for lighting applications. For dual display backlighting applications, the LM3503 provides a complete solution. The LM3503 contains two internal white LED current bypass FET (Field Effect Transistor) switches. The white LED current can be adjusted with a DC voltage from a digital to analog converter or RC filtered PWM (pulse-width-modulated) signal at the Cntrl pin. With no external compensation, cycle-by-cycle current limit, output over-voltage protection, input under-voltage protection, and dynamic white LED current control capability, the LM3503 offers superior performance over other step-up white LED drivers. n n n n n n n n > 80% Peak Efficiency Output Voltage Protection Options: 16V, 25V, 35V & 44V Input Under-Voltage Protection Internal S.