Dimmable CC/CV IC with LED Protection functions DW8508 General Description:
The DW8508 is CC/CV(Constant current & constant current) IC for stable LEDs driving in a secondary side . DW8508 built in protection circuit same as LED open, Short. It suitable for applications with operating voltage from 8V to 30V.
The DW8508 is offered in 8 SOIC
DW8508 Features
● Constant current & Constant voltage Driving
● Wide range operating voltage (8V~30V)
● Built in 5V Regulator
● PWM/Analog Dimming Control
● Thermal Derating Function
● Built in Protection circuit (LED Open/Short)
● Low feedback voltage (0.3V)
Block Diagram DW8508
Pin Information DW8508
Pin Description DW8508
No.
| Pin Name
| Description
| I/O |
| 1 | CCI
| Constant Current Control Input
| I
|
| 2 | CPWM
| PWM Dimming Capacitor
| I
|
| 3 | PWM
| PWM Input Voltage
| I
|
| 4 | GND
| Ground
| -
|
| 5 | VCC
| Power Supply Input Voltage
| I
|
6
| CVI
| Constant Voltage Control Input
| I
|
| 7 | V50
| 5.0V Reference Output
| O
|
| 8 | EO
| Error Amplifier Output
| O
|
DW8508 Typical Application Circuit
