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LM3406HVQMHXQ1 Arkusz danych(PDF) 2 Page - Texas Instruments

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Numer części LM3406HVQMHXQ1
Szczegółowy opis  Constant Current, Buck Regulator for Driving High Power LEDs
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Producent  TI1 [Texas Instruments]
Strona internetowa  http://www.ti.com
Logo TI1 - Texas Instruments

LM3406HVQMHXQ1 Arkusz danych(HTML) 2 Page - Texas Instruments

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DAP
SW
SW
BOOT
NC
VOUT
CS
GND
VIN
VIN
VCC
VINS
RON
COMP
DIM
1
2
3
4
5
6
7
14
13
12
11
10
9
8
LM3406, LM3406HV, LM3406HV-Q1
SNVS512E – SEPTEMBER 2008 – REVISED MARCH 2014
www.ti.com
3.1 Electrostatic Discharge Caution
These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam
during storage or handling to prevent electrostatic damage to the MOS gates.
3.1 CONNECTION DIAGRAM
LM3406 family
14-Lead Exposed Pad Plastic TSSOP Package
See Package Number PWP0014A
PIN DESCRIPTIONS
Pin(s)
Name
Description
Application Information
1,2
SW
Switch pin
Connect these pins to the output inductor and Schottky diode.
3
BOOT
MOSFET drive bootstrap pin
Connect a 22 nF ceramic capacitor from this pin to the SW pins.
4
NC
No Connect
No internal connection. Leave this pin unconnected.
5
VOUT
Output voltage sense pin
Connect this pin to the output node where the inductor and the first LED's
anode connect.
6
CS
Current sense feedback pin
Set the current through the LED array by connecting a resistor from this pin
to ground.
7
GND
Ground pin
Connect this pin to system ground.
8
DIM
Input for PWM dimming
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.
9
COMP
Error amplifier output
Connect a 0.1 µF ceramic capacitor with X5R or X7R dielectric from this pin
to ground.
10
RON
On-time control pin
A resistor connected from this pin to VIN sets the regulator controlled on-
time.
11
VCC
Output of the internal 7V linear
Bypass this pin to ground with a minimum 0.1 µF ceramic capacitor with
regulator
X5R or X7R dielectric.
12
VINS
Input voltage PWM dimming
Connect this pin to the anode of the input diode to allow dimming by PWM
comparator input
of the input voltage
13,14
VIN
Input voltage pin
Nominal operating input range for this pin is 6V to 42V (LM3406) or 6V to
75V (LM3406HV, LM3406HV-Q1).
DAP
DAP
Thermal Pad
Connect to ground. Place 4-6 vias from DAP to bottom layer ground plane.
2
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Copyright © 2008–2014, Texas Instruments Incorporated
Product Folder Links: LM3406 LM3406HV LM3406HV-Q1


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