Overview
The LM3406HVMH/NOPB is a monolithic switching regulator designed by Texas Instruments to deliver constant currents to high power LEDs. This device is part of the LM3406 family and is ideal for automotive, industrial, and general lighting applications. It features a high-side N-channel MOSFET switch with a current limit of 2.0A (typical) for step-down (Buck) regulators, allowing for the delivery of constant current to series and series-parallel connected LED arrays of varying number and type.
Key Specifications
| Parameter | Value |
|---|---|
| Package Type | HTSSOP (PWP) |
| Pins | 14 |
| Operating Temperature Range (°C) | -40 to 125 |
| Input Voltage Range (V) | 6 to 75 |
| Output Current Limit (A) | 1.7 (minimum over temperature) |
| Integrated MOSFET Current Limit (A) | 2.0 (typical) |
| Output Current Control | True Average Output Current Control |
| Dimming Method | PWM Dimming with Dedicated Logic Input or Power Input Voltage |
| Shutdown Protection | Low Power Shutdown, Thermal Shutdown Protection |
Key Features
- AEC-Q100 Grade 1 Qualified for automotive applications
- Integrated 2.0A MOSFET switch
- True Average Output Current Control
- Cycle-by-Cycle Current Limit
- PWM Dimming with Dedicated Logic Input or Power Input Voltage
- Simple Control Loop Compensation
- Low Power Shutdown
- Supports All-Ceramic Output Capacitors and Capacitor-less Outputs
- Thermal Shutdown Protection
Applications
The LM3406HVMH/NOPB is suitable for a variety of applications, including:
- Automotive lighting systems
- Industrial lighting applications
- General lighting solutions requiring high power LEDs
Q & A
- What is the input voltage range of the LM3406HVMH/NOPB?
The input voltage range is from 6V to 75V.
- What type of package does the LM3406HVMH/NOPB come in?
The device comes in a HTSSOP (PWP) package with 14 pins.
- What is the operating temperature range of the LM3406HVMH/NOPB?
The operating temperature range is from -40°C to 125°C.
- Does the LM3406HVMH/NOPB support PWM dimming?
Yes, it supports PWM dimming with a dedicated logic input or by PWM of the power input voltage.
- What kind of MOSFET is integrated into the LM3406HVMH/NOPB?
The device features an integrated high-side N-channel MOSFET switch with a current limit of 2.0A (typical).
- Is the LM3406HVMH/NOPB qualified for automotive use?
Yes, it is AEC-Q100 Grade 1 Qualified for automotive applications.
- What type of output current control does the LM3406HVMH/NOPB use?
The device uses true average output current control.
- Does the LM3406HVMH/NOPB have thermal shutdown protection?
Yes, it includes thermal shutdown protection.
- Can the LM3406HVMH/NOPB support capacitor-less outputs?
Yes, it supports all-ceramic output capacitors and capacitor-less outputs.
- What is the minimum output current limit over temperature for the LM3406HVMH/NOPB?
The minimum output current limit over temperature is 1.7A.
