Overview
The LM3410XMFX/NOPB, produced by Texas Instruments, is a high-frequency, constant-current boost and SEPIC LED driver. This monolithic IC is designed for applications requiring efficient and compact LED driving solutions. It operates with a minimum of external components, making it easy to integrate into various designs. The device is available in several packages, including the SOT-23-5, which is particularly space-efficient. The LM3410XMFX/NOPB supports input voltages from 2.7 V to 5.5 V and can generate output voltages from 3 V to 24 V, making it versatile for a range of LED backlight and lighting applications.
Key Specifications
| Parameter | Minimum | Typical | Maximum | Unit |
|---|---|---|---|---|
| Input Voltage (VIN) | 2.7 | - | 5.5 | V |
| Output Voltage (VOUT) | 3 | - | 24 | V |
| Switching Frequency (fSW) | 1200 | 1600 | 2000 | kHz (LM3410X) |
| Switching Frequency (fSW) | 360 | 525 | 680 | kHz (LM3410Y) |
| Switch On Resistance (RDS(ON)) | 170 | - | 330 | mΩ (MSOP and SOT-23) |
| Switch On Resistance (RDS(ON)) | 190 | - | 350 | mΩ (WSON) |
| Switch Current Limit (ICL) | 2.1 | 2.8 | - | A |
| Feedback Voltage (VFB) | 178 | 190 | 202 | mV |
| Operating Temperature Range | -40 | - | 125 | °C |
| Thermal Shutdown Temperature (TSD) | - | - | 165 | °C |
Key Features
- Qualified for automotive applications with AEC-Q100 compliance and device temperature grade 1: -40°C to 125°C ambient operating temperature range.
- High switching frequencies of 525 kHz or 1.6 MHz, allowing the use of small surface mount inductors and capacitors.
- Internal compensation and current-mode control for high-performance operation.
- PWM dimming capability with duty cycle from 0% to 100%.
- Cycle-by-cycle current limit and thermal shutdown for protection.
- Ultra-low standby current of 80 nA during shutdown.
- Space-saving packages including SOT-23, MSOP-PowerPad, and WSON.
- Internal soft start and undervoltage lockout (UVLO) features.
Applications
- LED backlight current sources for displays.
- Lithium-ion battery-powered backlight OLED and HB LED drivers.
- Handheld devices requiring efficient LED lighting.
- LED flash drivers for camera and other applications.
- Automotive lighting systems.
Q & A
- What are the input and output voltage ranges of the LM3410XMFX/NOPB?
The input voltage range is from 2.7 V to 5.5 V, and the output voltage range is from 3 V to 24 V.
- What are the switching frequencies available for this device?
The LM3410XMFX/NOPB operates at either 525 kHz or 1.6 MHz.
- What is the maximum switch current limit of the LM3410XMFX/NOPB?
The maximum switch current limit is 2.8 A (typical).
- What is the feedback voltage used for setting the output current?
The feedback voltage is 190 mV.
- How does the PWM dimming work on this device?
The PWM dimming allows the duty cycle to be varied from 0% to 100% to control the LED brightness.
- What is the thermal shutdown temperature of the LM3410XMFX/NOPB?
The thermal shutdown temperature is 165°C.
- What are the package options available for the LM3410XMFX/NOPB?
The device is available in SOT-23, MSOP-PowerPad, and WSON packages.
- Is the LM3410XMFX/NOPB qualified for automotive applications?
Yes, it is qualified for automotive applications with AEC-Q100 compliance.
- What is the quiescent current during shutdown?
The quiescent current during shutdown is 80 nA.
- How does the device protect against overcurrent conditions?
The device uses cycle-by-cycle current limiting and thermal shutdown to protect against overcurrent conditions.
