Datasheet Details
| Part number | LM3508 |
|---|---|
| Manufacturer | Texas Instruments |
| File Size | 2.63 MB |
| Description | Synchronous Magnetic Constant Current White LED Driver |
| Datasheet |
 LM3508 Datasheet
|
|
|
General Description
The LM3508 is a synchronous boost converter (no external Schottky diode required) that provides a constant current output.
It is designed to drive up to 4 series white LEDs at 30mA from a single-cell Li-Ion battery.
A single low power external resistor is used to set the maximum LED current.
Key Features
- 1.
- 2 Drives 4 Series White LEDs with up to 30mA.
- >80% Peak Efficiency.
- Up to 100kHz PWM Brightness Control.
- Accurate ±5% LED Current Regulation across VIN range.
- Internal Synchronous PFET (No Schottky Diode Required).
- True Shutdown Isolation.
- Output Short-Circuit Protection.
- 17.5V Over-Voltage Protection.
- Internal Soft-Start Eliminates Inrush Current.
- Wide Input Voltage Range: 2.7V to 5.5V.
- 850kHz F.