LM3409 Description
The LM3409, LM3409-Q1, LM3409HV, and LM3409HV-Q1 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 10-pin, HVSSOP package.
LM3409 Key Features
- 2-Ω, 1-A Peak MOSFET Gate Drive
- VIN Range: 6 V to 42 V (LM3409, LM3409-Q1)
- VIN Range: 6 V to 75 V (LM3409HV, LM3409HV
- Differential, High-Side Current Sense
- Cycle-by-Cycle Current Limit
- No Control Loop pensation Required
- 10,000:1 PWM Dimming Range
- 250:1 Analog Dimming Range
- Supports All-Ceramic Output Capacitors and
- Low-Power Shutdown and Thermal Shutdown