LM3404MR/NOPB National Semiconductor, LM3404MR/NOPB Datasheet - Page 2

• Manufacturer Part Number: LM3404MR/NOPB
• Description: IC LED DRVR HP CONST CURR 8-PSOP
• Manufacturer: National Semiconductor
• Series: PowerWise®r
• Type: High Power, Constant Currentr

Specifications of LM3404MR/NOPB

• Constant Current: Yes
• Topology: PWM, Step-Down (Buck)
• Number Of Outputs: 1
• Internal Driver: Yes
• Type - Primary: Automotive
• Type - Secondary: High Brightness LED (HBLED), White LED
• Frequency: 1MHz
• Voltage - Supply: 6 V ~ 42 V
• Mounting Type: Surface Mount
• Package / Case: 8-PSOP
• Operating Temperature: -40°C ~ 125°C
• Current - Output / Channel: 1A
• Internal Switch(s): Yes
• Efficiency: 96%
• For Use With: 551600000-001A/NOPB - BOARD WEBENCH SO8/SOP LM3404/2LM3404MREVAL - BOARD EVALUATION LM3404MR
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Voltage - Output: -
• Other names: LM3404MR

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Connection Diagrams
Ordering Information
Pin Descriptions
LM3404HVMRX
LM3404HVMAX
Pin(s)
Order Number
LM3404HVMR
LM3404HVMA
DAP
LM3404MRX
LM3404MAX
LM3404MR
LM3404MA
1
2
3
4
5
6
7
8
BOOT
Name
GND
RON
GND
VCC
DIM
VIN
SW
CS
8-Lead Plastic SO-8 Package
NS Package Number M08A
Output of the internal 7V linear
MOSFET drive bootstrap pin
Current sense feedback pin
Package Type
Input for PWM dimming
PSOP-8
On-time control pin
SO-8
Input voltage pin
Thermal Pad
Description
Ground pin
Switch pin
regulator
20205402
NSC Package Drawing
Application Information
Connect this pin to the output inductor and Schottky diode.
Connect a 10 nF ceramic capacitor from this pin to SW.
Connect a logic-level PWM signal to this pin to enable/disable the
power MOSFET and reduce the average light output of the LED array.
Connect this pin to system ground.
Set the current through the LED array by connecting a resistor from
this pin to ground.
A resistor connected from this pin to VIN sets the regulator controlled
on-time.
Bypass this pin to ground with a minimum 0.1 µF ceramic capacitor
with X5R or X7R dielectric.
Nominal operating input range for this pin is 6V to 42V (LM3404) or 6V
to 75V (LM3404HV).
Connect to ground. Place 4-6 vias from DAP to bottom layer ground
plane.
MRA08B
M08A
2
8-Lead Plastic PSOP-8 Package
NS Package Number MRA08B
95 units in anti-static rails
2500 units on tape and reel
95 units in anti-static rails
2500 units on tape and reel
95 units in anti-static rails
2500 units on tape and reel
95 units in anti-static rails
2500 units on tape and reel
Supplied As
20205456