LM3423Q1MHX/NOPB

Active

Texas Instruments

AUTOMOTIVE N-CHANNEL CONSTANT CURRENT LED CONTROLLER WITH SERIES DIM FET DRIVER AND FAULT FLAG

Find alt

Alpha

LM3423Q1MHX/NOPB

Active

Texas Instruments

AUTOMOTIVE N-CHANNEL CONSTANT CURRENT LED CONTROLLER WITH SERIES DIM FET DRIVER AND FAULT FLAG

Find alt

Alpha

Description Specifications Series Pricing CAD Documents

Description

General part information

LM3423 Series

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 these controllers 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 high-voltage 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.

Technical Specifications

Parameters and characteristics for this part

Specification	LM3423Q1MHX/NOPB

Dimming	PWM, Analog
Frequency	2 MHz
Grade	Automotive
Internal Switch(s)	No
Mounting Type	Surface Mount
Number of Outputs	1
Operating Temperature (Max)	125 °C
Operating Temperature (Min)	-40 °C
Package Length	0.173 in
Package Name	20-HTSSOP, 20-PowerTSSOP
Package Width	4.4 mm
Qualification	AEC-Q100
Topology	SEPIC, Step-Down (Buck), Step-Up (Boost)
Type	DC DC Controller
Voltage - Supply (Max)	75 V
Voltage - Supply (Min)	4.5 V

LM3423 Series

Automotive N-channel constant current LED controller with series DIM FET driver and fault flag

Part	Supplied Contents	Total Output Count	Output Type	Non-Isolated Output Count	Contents	Utilized IC / Part	Current - Output / Channel	Voltage - Input (Minimum)	Voltage - Input (Maximum)	Voltage - Supply (Min)	Qualification	Operating Temperature (Max)	Operating Temperature (Min)	Mounting Type	Internal Switch(s)	Dimming	Number of Outputs	Frequency	Package Length	Package Name	Package Width	Grade	Type	Voltage - Supply (Max)	Topology	Features	Voltage - Output
Texas Instruments LM3423BBLSCSEV/NOPB	Board(s)	1	Non-Isolated	1 count	Board	LM3423	700 mA	10 V	70 V
Texas Instruments LM3423Q1MH/NOPB										4.5 V	AEC-Q100	125 °C	-40 °C	Surface Mount	No	Analog PWM	1	2 MHz	0.173 in	20-HTSSOP 20-PowerTSSOP	4.4 mm	Automotive	DC DC Controller	75 V	SEPIC Step-Down (Buck) Step-Up (Boost)
Texas Instruments LM3423MHBKBSTEV/NOPB	Board(s)	1	Non-Isolated	1 count	Board	LM3423	1 A	4.5 V	35 V																	Dimmable	35 V
Texas Instruments LM3423Q0MH/NOPB										4.5 V	AEC-Q100	150 °C	-40 °C	Surface Mount	No	Analog PWM	1	2 MHz	0.173 in	20-HTSSOP 20-PowerTSSOP	4.4 mm	Automotive	DC DC Controller	75 V	SEPIC Step-Down (Buck) Step-Up (Boost)
Texas Instruments LM3423Q0MHX/NOPB										4.5 V	AEC-Q100	150 °C	-40 °C	Surface Mount	No	Analog PWM	1	2 MHz	0.173 in	20-HTSSOP 20-PowerTSSOP	4.4 mm	Automotive	DC DC Controller	75 V	SEPIC Step-Down (Buck) Step-Up (Boost)
Texas Instruments LM3423MHBSTEVAL/NOPB	Board(s)	1	Non-Isolated	1 count	Board	LM3423	1 A	4.5 V	35 V																	Dimmable	35 V
Texas Instruments LM3423Q1MHX/NOPB										4.5 V	AEC-Q100	125 °C	-40 °C	Surface Mount	No	Analog PWM	1	2 MHz	0.173 in	20-HTSSOP 20-PowerTSSOP	4.4 mm	Automotive	DC DC Controller	75 V	SEPIC Step-Down (Buck) Step-Up (Boost)
Texas Instruments LM3423MHX/NOPB										4.5 V		125 °C	-40 °C	Surface Mount	No	Analog PWM	1	2 MHz	0.173 in	20-HTSSOP 20-PowerTSSOP	4.4 mm		DC DC Controller	75 V	SEPIC Step-Down (Buck) Step-Up (Boost)
Texas Instruments LM3423MH/NOPB										4.5 V		125 °C	-40 °C	Surface Mount	No	Analog PWM	1	2 MHz	0.173 in	20-HTSSOP 20-PowerTSSOP	4.4 mm		DC DC Controller	75 V	SEPIC Step-Down (Buck) Step-Up (Boost)