Datasheet

IADJ
EN
CSN
LM3409HV
UVLO
VCC
COFF
GND
CSP
C
F
R
OFF
PGATE
C
OFF
R
UV2
R
UV1
DAP
VIN
R
SNS
1
2
3
4
5 6
7
8
9
10
D1
L1
Q1
U1
V
O
= 56V
V
IN
= 65V
C
IN1
C
IN2
I
LED
= 3A
maximum
C
F2
LM3409, LM3409HV, LM3409-Q1
SNVS602J –MARCH 2009–REVISED MAY 2013 www.ti.com
DESIGN #5: 75°C THERMAL FOLDBACK APPLICATION FOR 16 LEDS
Design #5 Bill of Materials
*U2 could be replaced with a 500kΩ NTC thermistor connected from IADJ to GND.
Qty Part ID Part Value Manufacturer Part Number
1 LM3409HV/LM3409QHV Buck controller TI LM3409HVMY/LM3409QHVMY
1 U1 Analog Temperature Sensor TI LM94022
2 C
IN1
, C
IN2
2.2µF X7R 10% 100V MURATA GRM43ER72A225KA01L
1 C
F
1.0µF X7R 10% 16V TDK C1608X7R1C105K
1 C
F2
0.1µF X7R 10% 16V TDK C1608X7R1C104K
1 C
OFF
470pF X7R 10% 50V TDK C1608X7R1H471K
1 Q1 PMOS 100V 3.8A ZETEX ZXMP10A18KTC
1 D1 Schottky 100V 3A COMCHIP SS3H10-E3/57T
1 L1 15 µH 20% 4.7A TDK SLF12575T-150M4R7
1 R
OFF
24.9kΩ 1% VISHAY CRCW060324K9FKEA
1 R
UV1
6.98kΩ 1% VISHAY CRCW06036K98FKEA
1 R
UV2
49.9kΩ 1% VISHAY CRCW060349K9FKEA
1 R
SNS
0.07Ω 1% 1W VISHAY WSL2512R0700FEA
34 Submit Documentation Feedback Copyright © 2009–2013, Texas Instruments Incorporated
Product Folder Links: LM3409 LM3409HV LM3409-Q1