LM3444MM/NOPB

Voltage - Supply (Max):	13V
Base Part Number:	LM3444
Supplier Device Package:	10-VSSOP
Package / Case:	10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 125°C (TJ)
Applications:	Lighting
Dimming:	Analog
Frequency:	--
Current - Output / Channel:	--
Voltage - Output:	--
Series:	--
Voltage - Supply (Min):	8V
Number of Outputs:	1
Internal Switch(s):	No
Topology:	Step-Down (Buck)
Type:	AC DC Offline Switcher
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Tape & Reel (TR)

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LM3444MM/NOPB Application Field and Working Principle

LM3444MM/NOPB is a PMIC (Power Management Integrated Circuit) LED driver with a wide application field and robust working principle. It is the most popular and advanced PMIC LED driver today. The LM3444MM/NOPB provides the capability to convert current into light of varying intensity and also can provide direct high-current control of external LEDs without the need of additional circuit components. This helps reduce the overall system cost, thereby making the LM3444MM/NOPB suitable for a wide range of applications. The LM3444MM/NOPB has the following features:

• Current regulated to 17 ADC
• Efficient current driving capability
• Regulated on-period operation of LEDs
• Highly integrated solution for LED indicator and lightbar applications
• Efficient current regulation from 0mA to 17mA
• Low power, low heat dissipation design
• Suitable for small form factor systems, such as cell phones

The application field of the LM3444MM/NOPB covers a wide range,including automotive, medical and industrial applications.The LM3444MM/NOPB is suitable for LED application in the following areas:

• Automotive illuminations
• Consumer goods indicators
• Medical diagnostics
• Interior lighting

The working principle of the LM3444MM/NOPB is quite simple.It is a current-based LED driver, which is built around a voltage reference, current sources and current measuring devices. The voltage reference is used to regulate the current flowing through the LED. The current sources provide the controlled current while the current measuring devices measure the actual current. The measured current is then compared to the set current, and a feedback loop adjusts the current sources until the measured current is equal to the set current. The LED will then be operated with constant and regulated current. This helps to improve the efficiency of the device and also the overall system performance. The LM3444MM/NOPB also has pre-programmed current profiles which can be used to control the lighting intensity of the LED. The profiles are adjustable by software and can be used to adjust the light intensity. The device also has programmable inrush current limit, undervoltage sensing/protection, overtemperature sensing/protection and lamp control functions. The LM3444MM/NOPB provides an efficient, controllable and high powered LED driver solution for a wide range of applications and is widely used in automotive, medical and industrial applications. It is a great choice for anyone looking for an efficient and cost-effective LED driver solution.

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