Overview
The LM3409QMYX/NOPB, part of the LM3409 family, is a P-channel MOSFET (PFET) controller designed for step-down (buck) current regulators. This device is particularly suited for driving LED loads and offers a wide range of features that make it ideal for various lighting applications. The LM3409QMYX/NOPB is AEC-Q100 Grade 1 qualified, making it suitable for automotive and other high-reliability applications. It features a controlled off-time (COFT) architecture, allowing operation in both continuous conduction mode (CCM) and discontinuous conduction mode (DCM) without the need for external control loop compensation.
Key Specifications
| Parameter | Min | Max | Unit |
|---|---|---|---|
| VIN Range | 6 | 42 | V |
| Gate Drive Resistance | 2 | Ω | |
| Peak MOSFET Gate Drive Current | 1 | A | |
| Junction Temperature Range | -40 | 125 | °C |
| Storage Temperature Range | -65 | 125 | °C |
| ESD Rating (HBM) | ±2000 | V | |
| Package Type | HVSSOP (10-pin) | ||
| Body Size (Nominal) | 3.00 mm × 3.00 mm |
Key Features
- Wide input voltage range: 6 V to 42 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
Applications
- LED Driver
- Constant Current Source
- Automotive Lighting
- General Illumination
Q & A
- What is the input voltage range of the LM3409QMYX/NOPB?
The input voltage range is 6 V to 42 V.
- What is the peak MOSFET gate drive current of the LM3409QMYX/NOPB?
The peak MOSFET gate drive current is 1 A.
- Does the LM3409QMYX/NOPB require external control loop compensation?
No, it does not require external control loop compensation.
- What is the PWM dimming range of the LM3409QMYX/NOPB?
The PWM dimming range is 10,000:1.
- What type of package does the LM3409QMYX/NOPB come in?
The device comes in a 10-pin HVSSOP package.
- Is the LM3409QMYX/NOPB suitable for automotive applications?
- What are the key applications of the LM3409QMYX/NOPB?
The key applications include LED drivers, constant current sources, automotive lighting, and general illumination.
- What is the junction temperature range of the LM3409QMYX/NOPB?
The junction temperature range is -40°C to 125°C.
- Does the LM3409QMYX/NOPB support all-ceramic output capacitors?
- What is the ESD rating of the LM3409QMYX/NOPB?
The ESD rating is ±2000 V (HBM).
