Overview
The FAN5702UC15X is a highly integrated and configurable charge-pump-based multi-LED driver produced by Fairchild Semiconductor. This device is designed to drive up to six LEDs in parallel, with a total output current of 180mA. It features an I2C interface for easy programming and control of the LED brightness, making it versatile for various lighting applications. The FAN5702UC15X is particularly suited for mobile handsets, smartphones, and portable media players due to its high efficiency and compact package options.
Key Specifications
| Parameter | Description | Value |
|---|---|---|
| Topology | Switched Capacitor (Charge Pump) | |
| Number of Outputs | 6 | |
| LED Current (ISET) | 15mA (default for this model) | |
| Total Package Load Current Capability | 180mA | |
| Temperature Range | -40°C to 85°C | |
| Package Type | WLCSP-16, 0.4mm Pitch, 1.6mm x 1.6mm | |
| Input Supply Voltage | 2.7V to 5.5VDC | |
| Switching Frequency | 1.2MHz | |
| Dimming Ratio | >600:1 for 100Hz PWM frequency | |
| Efficiency | Up to 92% |
Key Features
- I2C interface for easy programming and independent control of LED brightness
- Logarithmically controlled dimming with 64 steps
- Secondary brightness control using PWM dimming up to 20kHz
- Dynamic Backlight Control (DBC) to reduce current consumption
- Built-in 1.5x charge pump with low drop-out bypass switch and automatic switching to 1x mode
- Flexible grouping of LEDs for backlighting needs (default grouping of 2,1,1,1,1 for up to five independent lighting channels)
- High efficiency without an inductor
Applications
- LCD backlighting
- Mobile handsets and smartphones
- Portable media players
Q & A
- What is the maximum number of LEDs the FAN5702UC15X can drive?
The FAN5702UC15X can drive up to six LEDs in parallel.
- What is the total output current capability of the FAN5702UC15X?
The total package load current capability is 180mA.
- What is the default LED current (ISET) for the FAN5702UC15X model?
The default LED current (ISET) for this model is 15mA.
- What is the temperature range for the FAN5702UC15X?
The temperature range is -40°C to 85°C.
- What package types are available for the FAN5702UC15X?
The device is available in WLCSP-16, 0.4mm Pitch, 1.6mm x 1.6mm package.
- What is the input supply voltage range for the FAN5702UC15X?
The input supply voltage range is 2.7V to 5.5VDC.
- How does the FAN5702UC15X control LED brightness?
The device uses an I2C interface for programming and independent control of LED brightness, along with PWM dimming up to 20kHz.
- What is the efficiency of the FAN5702UC15X?
The device offers up to 92% efficiency.
- What are the common applications of the FAN5702UC15X?
Common applications include LCD backlighting, mobile handsets, smartphones, and portable media players.
- Does the FAN5702UC15X require an inductor for operation?
No, the device operates without an inductor by using a charge pump in 1.5x or pass-through mode.
