LM3401MM/NOPB National Semiconductor, LM3401MM/NOPB Datasheet - Page 2

• Manufacturer Part Number: LM3401MM/NOPB
• Description: IC LED DRIVER HIGH BRIGHT 8-MSOP
• Manufacturer: National Semiconductor
• Series: PowerWise®r
• Type: HBLED Driverr

Specifications of LM3401MM/NOPB

• Constant Current: Yes
• Topology: PWM, Step-Down (Buck)
• Number Of Outputs: 1
• Internal Driver: No
• Type - Primary: General Purpose
• Type - Secondary: High Brightness LED (HBLED)
• Frequency: 1.5MHz
• Voltage - Supply: 4.5 V ~ 35 V
• Mounting Type: Surface Mount
• Package / Case: 8-MSOP, Micro8™, 8-uMAX, 8-uSOP,
• Operating Temperature: -40°C ~ 125°C
• Current - Output / Channel: 1A
• Internal Switch(s): Yes
• Efficiency: 92%
• Operating Supply Voltage (typ): 5/9/12/15/18/24V
• Number Of Segments: 1
• Operating Temperature (min): -40C
• Operating Temperature (max): 125C
• Operating Temperature Classification: Automotive
• Package Type: MSOP
• Pin Count: 8
• Mounting: Surface Mount
• Power Dissipation: 660mW
• Operating Supply Voltage (min): 4.5V
• Operating Supply Voltage (max): 35V
• For Use With: LM3401EVAL - BOARD EVALUATION FOR LM3401
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Voltage - Output: -
• Lead Free Status / Rohs Status: Compliant
• Other names: LM3401MMTR

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Connection Diagram
Ordering Information
Pin Descriptions
Part Number
Pin #
LM3401MMX
LM3401MM
1
2
3
4
5
6
7
8
Pin Name
GND
SNS
HYS
DIM
ILIM
VIN
HG
CS
Current sense pin. Connect to the PFET drain
Dimming input pin. When DIM is low, the HG drive is off. Can be connected to a logic level PWM signal
Current feedback pin – to LED cathode. Connect a resistor from this pin to ground to set the DC LED
current
Hysteresis adjust pin. Connect a resistor from this pin to GND to set the hysteresis window
Ground pin
Gate drive output. Connect to the PFET gate
Power supply input
Current limit adjust pin. Connect a resistor from this pin to the PFET source to set the current limit threshold
Package Type
MSOP-8
8-Lead Plastic MSOP
NS Package Drawing
Top View
MUA08A
2
Description
30021402
1000 Units on Tape and Reel
3500 Units on Tape and Reel
Supplied As