LM3421MH/NOPB Semiconductors - ICs by Texas Instruments

LED DRIVER BUCK-BOOST/FLYBACK TSSOP16

Status: Unknown
Series: -
RoHS: Unknown
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The LM3421 and LM3423 family of devices are versatile high voltage N-channel MOSFET controllers for LED drivers. They can be easily configured in buck, boost, buck-boost and SEPIC topologies. This flexibility, along with an input voltage rating of 75 V, makes the LM3421 and LM3423 devices ideal for illuminating LEDs in a large family of applications. Adjustable high-side current sense voltage allows for tight regulation of the LED current with the highest efficiency possible. The LM3421 and LM3423 devices use 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 LM3421 and LM3423 devices include a highvoltage start-up 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.
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Specifications

Device Topology Boost Buck Buck-Boost Flyback SEPIC
Input Voltage Min 4.5V
Input Voltage Max 75V
Output Voltage Max 72V
Output Current Max 5A
Switching Frequency 2MHz
IC Mounting SMD

Alternative Descriptions

N-channel controllers for constant current LED drivers with series DIM FET driver | Texas Instruments
LED DRIVER, BUCK-BOOST/FLYBACK TSSOP16 | element14

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