LM3429MHX
Features
• LM3429-Q1 is AEC-Q100 Grade 1 Qualified for 1 Automotive Applications
• VIN Range From 4.5 V to 75 V
• Adjustable Current Sense Voltage
• High-Side Current Sensing
• 2-Ω, 1-A Peak MosFET Gate Driver
• Input Undervoltage Protection
• Overvoltage Protection
• PWMDimming
• Analog Dimming
• Cycle-by-Cycle Current Limit
• Programmable Switching Frequency
• LowProfile 14-lead HTSSOP Package
• Thermal Shutdown
Applications
• LEDDrivers- Buck, Boost, Buck-Boost, SEPIC
• Indoor and Outdoor SSL
• Automotive
• General Illumination
• Constant-Current Regulators
Description
The LM3429 is a versatile high voltage N-channel MosFET controller for LED drivers. It can be easily configured in buck, boost, buck-boost and SEPIC topologies. This flexibility, along with an input voltage rating of 75V, makes the LM3429 ideal for illuminating LEDs in a very diverse, large family of applications.
Adjustable high-side current sense voltage allows for tight regulation of the LED current with the highest efficiency possible. The LM3429 uses Predictive Off time (PRO) control, which is a combination of peak current-mode control and a predictive off-timer. This method of control eases the design of loop compensation while providing inherent input voltage feed-forward compensation.
The LM3429 includes a high-voltage startup regulator that operates over a wide input range of 4.5 V to 75 V. The internal PWM controller is designed for adjustable switching frequencies of up to 2 MHz, thus enabling compact solutions. Additional features include analog dimming, PWM dimming, overvoltage protection, undervoltage lock-out, cycle-by-cycle current limit, and thermal shutdown.
Information
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Manufacturer
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Series
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Packaging
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Tape & Reel (TR)
Cut Tape (CT)
Digi-Reel
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Part Status
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Type
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Topology
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SEPIC, Step-Down (Buck), Step-Up (Boost)
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Internal Switch(s)
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Number of Outputs
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Voltage - Supply (Min)
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Voltage - Supply (Max)
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Voltage - Output
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Current - Output / Channel
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Frequency
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Dimming
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Applications
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Operating Temperature
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Grade
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Mounting Type
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Package / Case
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14-PowerTSSOP (0.173", 4.40mm Width)
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Supplier Device Package
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Base Product Number
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Drawing
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