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Details for LM3421MH/NOPB by Texas Instruments
Electronic & Electrical Components > Semiconductors - ICs > Driver & Interface ICs
LM3421MH/NOPB
Buy Directly from Texas Instruments (5359 in stock) $1.0800
LED DRIVER BUCK-BOOST/FLYBACK TSSOP16
LM3421MH/NOPB image

LM3421MH/NOPB by Texas Instruments

LED DRIVER BUCK-BOOST/FLYBACK TSSOP16
Features
2-u2126, 1-A Peak MOSFET Gate Driver
Cycle-by-Cycle Current Limit
Fault Status Flag and Timer (LM3423/23Q1/23Q0
High-Side Adjustable Current Sense
Input Undervoltage and Output Overvoltage Protection
LED Output Status Flag (LM3423/23Q1/23Q0 Only)
LM3421Q0/LM3423Q0 are Automotive Grade Products That are AEC-Q100 Grade 0 Qualified
LM3421Q1/LM3423Q1 are Automotive Grade Products That are AEC-Q100 Grade 1 Qualified
PWM and Analog Dimming
Programmable Switching Frequency
VIN Range From 4.5 V to 75 V
Zero Current Shutdown and Thermal Shutdown
Part Information
LM3421MH/NOPB image
RoHS Compliant
Description
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.
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
Alternate Descriptions
LED Driver 3-Seg 5/9/12/15/18/24V TSSOP RS Components
LED DRIVER, BUCK-BOOST/FLYBACK TSSOP16; 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 RoHS Compliant: Yes Newark Electronics
LED DRVR 5V/9V/12V/15V/18V/24V 16-Pin TSSOP EP Tube Avnet America
LED DRVR 5V/9V/12V/15V/18V/24V 16-Pin TSSOP EP Tube Avnet Europe
N-channel controllers for constant current LED drivers with series DIM FET driver Texas Instruments