LM3406HVEVAL National Semiconductor, LM3406HVEVAL Datasheet - Page 2

• Manufacturer Part Number: LM3406HVEVAL
• Description: LM3406/06HV 1.5A Constant Current Buck Regulator for Driving High Power LEDs; Qty per Container: 1/
• Manufacturer: National Semiconductor

www.national.com
Connection Diagram
Ordering Information
Pin Descriptions
Pin(s)
13,14
DAP
LM3406HVMHX
Order Number
LM3406HVMH
1,2
10
11
12
LM3406MHX
3
4
5
6
7
8
9
LM3406MH
COMP
BOOT
VOUT
Name
VINS
GND
RON
VCC
DAP
DIM
VIN
SW
NC
CS
Output of the internal 7V linear
MOSFET drive bootstrap pin
Input voltage PWM dimming
Current sense feedback pin
Output voltage sense pin
Input for PWM dimming
Package Type
Error amplifier output
eTSSOP-14
On-time control pin
comparator input
Input voltage pin
Thermal Pad
Description
No Connect
Ground pin
Switch pin
regulator
14-Lead Exposed Pad Plastic TSSOP Package
NS Package Number MXA14A
NSC Package Drawing
LM3406/06HV
Application Information
Connect these pins to the output inductor and Schottky diode.
Connect a 22 nF ceramic capacitor from this pin to the SW pins.
No internal connection. Leave this pin unconnected.
Connect this pin to the output node where the inductor and the first
LED's anode connect.
Set the current through the LED array by connecting a resistor from
this pin to ground.
Connect this pin to system ground.
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.
Logic high = output on, logic low - output off.
Connect a 0.1 µF ceramic capacitor with X5R or X7R dielectric 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.
Connect this pin to the anode of the input diode to allow dimming by
PWM of the input voltage
Nominal operating input range for this pin is 6V to 42V (LM3406) or 6V
to 75V (LM3406HV).
Connect to ground. Place 4-6 vias from DAP to bottom layer ground
plane.
MXA14A
2
30020302
2500 units on tape and reel
2500 units on tape and reel
95 units in anti-static rails
95 units in anti-static rails
Supplied As