LM3409 Datasheet, PDF (26/30 Pages) National Semiconductor (TI) – PFET Buck Controller for High Power LED Drives

DESIGN #5: 75°C THERMAL FOLDBACK APPLICATION FOR 16 LEDS
Design #5 Bill of Materials
Qty
Part ID
Part Value
Manufacturer
1
LM3409HV
Buck controller
NSC
1
U1
Analog Temperature NSC
Sensor
2
C_IN1, C_IN2
2.2µF X7R 10% 100V MURATA
1
C_F
1.0µF X7R 10% 16V TDK
1
C_F2
0.1µF X7R 10% 16V TDK
1
C_OFF
470pF X7R 10% 50V TDK
1
Q1
PMOS 100V 3.8A
ZETEX
1
D1
Schottky 100V 3A
COMCHIP
1
L1
15 µH 20% 4.7A
TDK
1
R_OFF
24.9kΩ 1%
VISHAY
1
R_UV1
6.98kΩ 1%
VISHAY
1
R_UV2
49.9kΩ 1%
VISHAY
1
R_SNS
0.07Ω 1% 1W
VISHAY
*U2 could be replaced with a 500kΩ NTC thermistor connected from IADJ to GND.
30085624
Part Number
LM3409HVMY
LM94022
GRM43ER72A225KA01
L
C1608X7R1C105K
C1608X7R1C104K
C1608X7R1H471K
ZXMP10A18KTC
SS3H10-E3/57T
SLF12575T-150M4R7
CRCW060324K9FKEA
CRCW06036K98FKEA
CRCW060349K9FKEA
WSL2512R0700FEA
www.national.com
26