Overview
The LM3409QMY/NOPB is a P-channel MOSFET (PFET) controller designed for step-down (buck) current regulators, specifically tailored for high-power LED drivers. This device, produced by Texas Instruments, is part of the LM3409 family and is available in a thermally enhanced 10-pin HVSSOP package. It offers a wide input voltage range, high-side differential current sense, and a constant off-time (COFT) control mechanism, making it ideal for use as a constant current source for driving LEDs with forward currents up to 5 A.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Package | HVSSOP (10) | - |
| Pins | 10 | - |
| Operating Temperature Range | -40 to 125 | °C |
| Input Voltage Range (LM3409, LM3409-Q1) | 6 to 42 | V |
| Input Voltage Range (LM3409HV, LM3409HV-Q1) | 6 to 75 | V |
| Junction Temperature | -40 to 125 | °C |
| Storage Temperature | -65 to 125 | °C |
| Maximum Junction Temperature | 150 | °C |
| ESD Rating (HBM) | ±2000 | V |
| ESD Rating (CDM) | ±1000 | V |
Key Features
- AEC-Q100 Grade 1 Qualified for automotive applications (LM3409-Q1 and LM3409HV-Q1)
- 2-Ω, 1-A Peak MOSFET Gate Drive
- Differential, High-Side Current Sense with low adjustable threshold voltage
- Cycle-by-Cycle Current Limit
- No Control Loop Compensation Required
- 10,000:1 PWM Dimming Range and 250:1 Analog Dimming Range
- Supports All-Ceramic Output Capacitors and Capacitor-less Outputs
- Low-Power Shutdown and Thermal Shutdown
- Thermally Enhanced 10-Pin, HVSSOP Package
Applications
- LED Drivers
- Constant Current Source
- Automotive Lighting
- General Illumination
Q & A
- What is the primary function of the LM3409QMY/NOPB?
The LM3409QMY/NOPB is a P-channel MOSFET controller designed for step-down (buck) current regulators, specifically for high-power LED drivers.
- What is the input voltage range for the LM3409QMY/NOPB?
The input voltage range for the LM3409QMY/NOPB is 6 V to 42 V.
- What type of package does the LM3409QMY/NOPB come in?
The LM3409QMY/NOPB comes in a thermally enhanced 10-pin HVSSOP package.
- What are the key features of the LM3409QMY/NOPB?
Key features include differential high-side current sense, cycle-by-cycle current limit, no control loop compensation required, and support for all-ceramic output capacitors and capacitor-less outputs.
- Is the LM3409QMY/NOPB suitable for automotive applications?
- What is the maximum junction temperature for the LM3409QMY/NOPB?
The maximum junction temperature is 150°C.
- What are the ESD ratings for the LM3409QMY/NOPB?
The ESD ratings are ±2000 V for the Human Body Model (HBM) and ±1000 V for the Charged Device Model (CDM).
- What dimming capabilities does the LM3409QMY/NOPB offer?
The device offers a 10,000:1 PWM dimming range and a 250:1 analog dimming range.
- What kind of shutdown features does the LM3409QMY/NOPB have?
The device features low-power shutdown and thermal shutdown.
- What is the storage temperature range for the LM3409QMY/NOPB?
The storage temperature range is -65°C to 125°C.
