LM3409是TI公司的一款LED照明-照明产品，LM3409是用于高功率 LED 驱动的 PFET 降压控制器，本页介绍了LM3409的产品说明、应用、特性等，并给出了与LM3409相关的TI元器件型号供参考。
LM3409 - 用于高功率 LED 驱动的 PFET 降压控制器 - LED照明-照明 - LED驱动器 - TI公司（Texas Instruments，德州仪器）
- LM3409Q/LM3409QHV is an Automotive Grade Product That is AEC-Q100 Grade 1 Qualified
- 2-Ω, 1-A Peak MOSFET Gate Drive
- VIN Range: 6 V to 42 V (LM3409/LM3409Q/LM3409N)
- VIN Range: 6 V to 75 V (LM3409HV/LM3409QHV)
- Differential, High-Side Current Sense
- Cycle-by-Cycle Current Limit
- No Control Loop Compensation Required
- 10,000:1 PWM Dimming Range
- 250:1 Analog Dimming Range
- Supports All-Ceramic Output Capacitors and Capacitor-less Outputs
- Low-Power Shutdown and Thermal Shutdown
- Thermally Enhanced VSSOP-10 Package
- Dual Inline Package (LM3409N)
- LED Driver
- Constant Current Source
- Automotive Lighting
- General Illumination
The LM3409/09N/09HV/09Q/09QHV are P-channel MOSFET (PFET) controllers for step-down (buck) current regulators. They offer wide input voltage range, high-side differential current sense with low adjustable threshold voltage and fast output enable/disable function and a thermally enhanced VSSOP-10 package. These features combine to make the LM3409 family of devices ideal for use as constant current sources for driving LEDs where forward currents up to 5 A are easily achievable.
The LM3409 devices use Constant Off-Time (COFT) control to regulate an accurate constant current without the need for external control loop compensation. Analog and PWM dimming are easy to implement and result in a highly linear dimming range with excellent achievable contrast ratios. Programmable UVLO, low-power shutdown, and thermal shutdown complete the feature set.
| PART NUMBER | PACKAGE | BODY SIZE (NOM) |
|---|---|---|
| LM3409 | HVSSOP (10) | 3.00 mm × 3.00 mm |
| PDIP (14) | 19.177 mm × 6.35 mm | |
| LM3409-Q1 | HVSSOP (10) | 3.00 mm × 3.00 mm |
| LM3409HV | ||
| LM3409HV-Q1 |
