The CAT3603HV2 is a high-voltage, high-efficiency, synchronous boost converter designed for driving white LEDs in LCD backlighting applications. It integrates a 40V power switch and a Schottky diode, minimizing external component count and solution size. The device features a wide input voltage range, allowing it to operate from various power sources.

Applications

• LCD Backlighting for mobile phones
• LCD Backlighting for digital cameras
• Portable media players
• Handheld devices
• General boost converter applications

Features

• High Efficiency: Up to 85%
• 40V Integrated Power Switch
• Wide Input Voltage Range: 2.5V to 5.5V
• Adjustable Output Voltage
• Internal Soft-Start
• Over-Voltage Protection
• Short-Circuit Protection
• Thermal Shutdown Protection
• Low Shutdown Current: <1μA
• Small Package: TDFN-10

Benefits

• High efficiency maximizes battery life in portable devices.
• Integrated power switch reduces external component count and cost.
• Wide input voltage range provides flexibility in power source selection.
• Small package enables compact solution size.
• Robust protection features ensure reliable operation.

The CAT3603HV2 uses a fixed-frequency PWM control scheme to achieve high efficiency and low output voltage ripple. The output voltage can be adjusted using an external resistor divider. The device also incorporates internal soft-start circuitry to limit inrush current during startup. Its comprehensive protection features, including over-voltage, short-circuit, and thermal shutdown, ensure reliable operation under various fault conditions. The CAT3603HV2 is available in a small TDFN-10 package, making it ideal for space-constrained applications.