Overview
The LM3409QHVMY/NOPB is a P-channel MOSFET (PFET) controller designed for step-down (buck) current regulators, manufactured by Texas Instruments. This device is part of the LM3409 family, which includes variants such as LM3409, LM3409-Q1, LM3409HV, and LM3409HV-Q1. The LM3409QHVMY/NOPB is particularly suited for applications requiring wide input voltage ranges and high-side differential current sensing. It is ideal for use as a constant current source for driving LEDs, with the capability to handle forward currents up to 5 A. The device features a thermally enhanced 10-pin HVSSOP package, making it suitable for various high-power LED driver applications.
Key Specifications
| Parameter | Value |
|---|---|
| Package Type | 10-Pin HVSSOP (DGQ) |
| Input Voltage Range | 6 V to 75 V |
| MOSFET Gate Drive | 2-Ω, 1-A Peak |
| Current Sense | Differential, High-Side |
| Current Limit | Cycle-by-Cycle |
| PWM Dimming Range | 10,000:1 |
| Analog Dimming Range | 250:1 |
| Output Capacitors | Supports All-Ceramic and Capacitor-less Outputs |
| Shutdown Modes | Low-Power and Thermal Shutdown |
| Operating Temperature Range | -40°C to 125°C |
| Body Size (Nominal) | 3.00 mm × 3.00 mm |
Key Features
- AEC-Q100 Grade 1 Qualified for automotive applications
- Wide input voltage range: 6 V to 75 V
- 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
- Constant off-time (COFT) control for accurate constant current regulation
- Programmable UVLO (Undervoltage Lockout)
Applications
- LED Drivers
- Constant Current Sources
- Automotive Lighting
- General Illumination
- Reference designs for various LED driver applications, including non-sync buck controllers and buck-boost converters
Q & A
- What is the input voltage range of the LM3409QHVMY/NOPB?
The input voltage range is 6 V to 75 V.
- What type of MOSFET gate drive does the LM3409QHVMY/NOPB provide?
The device provides a 2-Ω, 1-A Peak MOSFET gate drive.[
- What is the PWM dimming range of the LM3409QHVMY/NOPB?
The PWM dimming range is 10,000:1.[
- Does the LM3409QHVMY/NOPB support capacitor-less outputs?
- What is the operating temperature range of the LM3409QHVMY/NOPB?
- What package type does the LM3409QHVMY/NOPB come in?
- Is the LM3409QHVMY/NOPB AEC-Q100 qualified?
- What is the purpose of the UVLO pin on the LM3409QHVMY/NOPB?
- How does the LM3409QHVMY/NOPB regulate constant current?
- What are some common applications of the LM3409QHVMY/NOPB?
- Does the LM3409QHVMY/NOPB support analog dimming?
