The FAN5330 from Fairchild Semiconductor is an LED driver that features fixed-frequency PWM operation and an integrated FET switch. It is intended for cell phones, PDAs, handheld equipment, display bias and LED bias, and it operates at a 1.5 MHz switching frequency to reduce switching noise at the battery terminal. The document covers its pinout, ratings, electrical characteristics, block diagram and application information.
The datasheet explains how to set output current and how to select inductors, capacitors and a Schottky diode. It also describes brightness control using a PWM logic signal or an adjustable DC voltage, along with over-voltage protection and open-circuit protection.
| Input voltage range | 1.8 V to 5.5 V |
|---|---|
| Output voltage range | Vin to 30 V |
| Switching frequency | 1.25 MHz to 1.75 MHz (1.5 MHz typical) |
| Feedback voltage | 99 mV to 121 mV (110 mV typical) |
| Switch on-resistance | 0.6 Ω at Vin = 5 V |
| Package | 5-lead SOT23 |
| Operating ambient temperature | -40 °C to 85 °C |
| Thermal shutdown temperature | 150 °C |
The FAN5330 is an LED driver that features fixed-frequency PWM operation and an integrated FET switch, intended for cell phones, PDAs, handheld equipment, display bias and LED bias.
The recommended input voltage range is 1.8 V to 5.5 V.
Brightness can be controlled with a PWM logic signal applied to SHDN, or with an external adjustable DC voltage between 0 V and 2 V.
The FAN5330 is available in a 5-lead SOT23 package.