peculiarity
LM3429Q1 is an automotive-grade product, certified by AEC - Q100 class (operating junction temperature from -40°C to +125°C).
Ranges from 4.5V to 75V
Adjustable current detection voltage
High-edge current detection
2Ω, 1A peak MOSFET gate driver
Input undervoltage protection
Overvoltage protection
PWM dimming
Analog dimming
Limiting current in cycles
Programmable switching frequency
Heat is cut off
illustrate
The LM3429 is a versatile LED driver controller for high-voltage N-channel MOSFETs. It can be easily configured in buck, boost, buck-boost and SEPIC topologies. This flexibility, along with a 75V rated input voltage, makes the LM3429 illuminated LEDs ideal for the application of LEDs in a very diverse family.
Adjustable high-side current detection voltage ensures the highest efficiency of tightly adjusted LED current. The LM3429 uses predictive shutdown time (professional) control, which combines peak current mode control with a predictive shutdown timer. This control method simplifies loop compensation design while providing inherent input voltage feedforward compensation.
The LM3429 includes a high-voltage start-up regulator that exceeds a wide input voltage range of 4.5V to 75V. The design of the internal PWM controller with adjustable switching frequency up to 2.0 MHz makes for a compact solution. Other features include dimming for simulated PWM dimming, overvoltage protection, undervoltage lockout, cycle-by-cycle current limiting, and thermal shutdown.
The LM3429 comes in an EP 14-pin package in a low-profile, high-efficiency thermal TSSOP package.
LM3429Q1 is an automotive-grade product and is AEC-Q100 standard Level 1 qualified
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LED driver - buck, boost, buck - boost, SEPIC
Indoor and outdoor SSL
Automobiles
Ordinary lighting
Constant current regulator