LED2000：3 A monolithic step-down current source with synchronous rectification
The LED2000 is an 850 kHz fixed switching frequency monolithic step-down DC-DC converter designed to operate as precise constant current source with an adjustable current capability up to 3 A DC. The embedded PWM dimming circuitry features LED brightness control. The regulated output current is set connecting a sensing resistor to the feedback pin. The embedded synchronous rectification and the 100 mV typical RSENSEvoltage drop enhance the efficiency performance. The size of the overall application is minimized thanks to the high switching frequency and ceramic output capacitor compatibility. The device is fully protected against thermal overheating, overcurrent and output short-circuit. The LED2000 is available in VFQFPN 4 mm x 4 mm 8-lead, and standard SO8 package.
Key Features
- 3.0 V to 18 V operating input voltage range
- 850 kHz fixed switching frequency
- 100 mV typ. current sense voltage drop
- PWM dimming
- ± 7% output current accuracy
- Synchronous rectification
- 95 mΩ HS / 69 mΩ LS typical RDS(on)
- Peak current mode architecture
- Embedded compensation network
- Internal current limiting
- Ceramic output capacitor compliant
- Thermal shutdown
产品规格
手册
解决方案评估工具
| 型号 | 制造商 | Description |
|---|
| STEVAL-ILL051V1 | | 3 A HB LED driver with dimming function based on the LED2000 in an SO-8 Batwing package |
| STEVAL-ILL051V2 | | 3 A HB LED driver with dimming function based on the LED2000 in a QFN package |
样片和购买
| 型号 | Quantity | Unit Price (US$)
* | Package | Packing Type | Operating Temperature (°C) (min) | Operating Temperature (°C) (max) | ECCN (EU) | ECCN (US) | Country of Origin |
|---|
| LED2000DR | 1000 | 0.775 | SO-8 | Tape And Reel | -40 | 125 | NEC | EAR99 | CHINA |
| LED2000PUR | 1000 | 0.91 | VFDFPN 8 4x4x1.0 | Tape And Reel | -40 | 125 | NEC | EAR99 | MALAYSIA |
质量和可靠性
