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 LEDcurrent 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.
Features
• Drives up to 4, 6, 8 or 10 White LEDs for Dual Display Backlighting
• >80% Peak Efficiency
• Output Voltage Protection Options: 16V, 25V,35V & 44V
• Input Under-Voltage Protection
• Internal Soft Start Eliminates Inrush Current
• 1 MHz Constant Switching Frequency
• Analog Brightness Control
• Wide Input Voltage Range: 2.5V to 5.5V
• Low Profile Packages: <1 mm Height
– 10 Bump DSBGA
– 16 Pin WQFN
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 LEDcurrent 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.
Features
• Drives up to 4, 6, 8 or 10 White LEDs for Dual Display Backlighting
• >80% Peak Efficiency
• Output Voltage Protection Options: 16V, 25V,35V & 44V
• Input Under-Voltage Protection
• Internal Soft Start Eliminates Inrush Current
• 1 MHz Constant Switching Frequency
• Analog Brightness Control
• Wide Input Voltage Range: 2.5V to 5.5V
• Low Profile Packages: <1 mm Height
– 10 Bump DSBGA
– 16 Pin WQFN
| 
Datasheet