ELM916DA 450V LED controller
ELM916DA is high efficiency LED driver control IC, which uses fewer components and drives LED with constant current. ELM916DA works in open loop and current mode, and can be programmed to operate in either constant frequency or constant off-time mode. ELM916DA consists of an 8 to 450V linear regulator, which makes working in wide input voltage range without external low voltage power supply. Internal 0 to 100% PWM dimming and 0 to 250mV linear dimming help to adjust LED luminance. ELM916DA is suitable for buck LED drivers; it is capable of providing good stability response because of open loop current mode control and with the controller, it is able to regulate output current without any compensation outstandingly.
| Open loop peak current controller | |
|---|---|
| Constant current LED driver | |
| LED string from one to hundreds of diodes | |
| Support linear and PWM dimming interface | |
| Requires few external components | |
| Buck system efficiency | >90% |
| Internal linear regulator | 8 to 450V |
| Constant off time function | 50% (when duty cycle is over) |
| Package | SOP-8 |
| Datasheet | ELM916DA |
- Application
- DC/DC LED driver applications
- RGB backlighting LED driver
- General purpose constant current source
- Signage and decorative LED lighting
- Chargers
- Non-isolation LED bulb
Absolute Maximum Ratings
| Parameter | Symbol | Limit | Unit |
|---|---|---|---|
| VIN voltage power supply | Vin | 500 | V |
| VDD voltage | Vdd | 36 | V |
| LD voltage | Vld | 36 | V |
| PWMD voltage | Vpwmd | 36 | V |
| GATE voltage | Vgate | 36 | V |
| CS voltage | Vcs | 7 | V |
| RT voltage | Vrt | 7 | V |
| Power dissipation | Pd | 630 | mW |
| Operating ambient temperature | Top | -40 to +85 | °C |
| Storage temperature | Tstg | -55 to +150 | °C |
Block diagram
