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DC2079A

P1-P3P4-P6P7-P8
4
dc2079af
DEMO MANUAL DC2079A
Figure 1. Test Procedure Setup Drawing for DC2079A
Quick start proceDure
5
dc2079af
DEMO MANUAL DC2079A
Quick start proceDure
Figure 2. DC2079A Efficiency with 32V LEDs at 650mA
and 100% PWMOUT Duty Cycle
Figure 3. DC2079A 300Hz PWM Dimming Waveforms
at Different PWMOUT Duty Cycles
Figure 4. DC2079A CTRL LED Current Foldback at
Low PV
IN
with UVLO (Falling and Rising)
PV
IN
(V)
4
I
LED
(A)
0.7
0.5
0.4
0.2
0.3
0.6
0.1
0
85
DC2079A F04
1276 11109
UNDER
VOLTAGE
LOCKOUT
(FALLING)
TURN-ON
(RISING)
PV
IN
(V)
5
EFFICIENCY (%)
100
90
96
98
88
84
86
94
92
82
80
2510
DC2079A F02
302015
32V
LED
650mA
PWM = INTV
CC
DC2079A F03
I
LED
500mA/DIV
V
IN
= 12V
V
LED
= 32V
V
DIM
= 8V
DC
PWM
= 97.5%
V
DIM
= 3.9V
DC
PWM
= 47%
V
DIM
= 1.5V
DC
PWM
= 10%
V
DIM
= 0V
DC
PWM
= 3.1%
6
dc2079af
DEMO MANUAL DC2079A
parts List
ITEM QTY REFERENCE PART DESCRIPTION MANUFACTURER/PART NUMBER
Required Circuit Components
1 1 C1 Cap., X5R 1µF 50V 20% 1206 TDK C3216X5R1H105M
2 1 C2 Cap., X5R 10µF 50V 20% 1210 Taiyo Yuden UMK325BJ106MM-T
3 2 C4, C5 Cap., X5R 4.7µF 50V 20% 1210 Taiyo Yuden UMK325BJ475MM-T
4 1 C9 Cap., X7R 4.7nF 25V 20% 0603 AVX 06033C472MAT2A
5 1 C10 Cap., X7R 0.01µF 25V 10% 0603 AVX 06033C103KAT2A
6 1 C11 Cap., X7R 1µF 10V 10% 0603 Taiyo Yuden LMK107BJ105KA
7 1 C16 Cap., X7R 47nF 16V 20% 0603 Taiyo Yuden EMK107BJ473MA
8 1 D1 Schottky Diode 5A PowerDi5 Diodes Inc. PDS560-13
9 1 L1 Inductor, 22µH Cooper Coiltronics DR125-220
10 1 M1 Mosfet N-Chan., 40V SOT23 Siliconix Si2318CDS-T1-GE3
11 1 RS1 Res., Chip 0.39, 0.25W 1% 1206 Panasonic ERJ-8RQFR39V
12 1 R1 Res., Chip 28.7k 0.06W 1% 0402 Vishay CRCW040228K7FKED
13 1 R2 Res., Chip 5.1k 0.06W 5% 0402 Vishay CRCW04025K10JNED
14 1 R7 Res., Chip 1.00M 0.06W 1% 0603 Vishay CRCW06031M00FKEA
15 1 R8 Res., Chip 37.4k 0.06W 1% 0402 Vishay CRCW040237K4FKED
16 1 R21 Res., Chip 124k 0.06W 1% 0603 Vishay CRCW0603124KFKEA
17 1 U1 I.C.,40Vin/ 40Vout LED Driver Linear Tech. Corp. LT3954EUHE
Optional Circuit Components
1 1 C3 Cap., X5R 10µF 50
V 20% 1210 Taiyo Y
uden UMK325BJ106MM-T
2 0 C6-C8, C12-C15 Cap., 1210 Optional
3 0 C17 Cap., 0603 Optional
4 0 Q1 Diode, SOT23 Optional
5 1 R3 Res., Chip 499k 0.06W 1% 0603 Vishay CRCW0603499KFKEA
6 1 R4 Res., Chip 147k 0.06W 1% 0603 Vishay CRCW0603147KFKEA
7 1 R5 Res., Chip 1M 0.06W 1% 0402 Vishay CRCW04021M00FKED
8 1 R6 Res., Chip 165k 0.06W 1% 0402 Vishay CRCW0402165KFKED
9 1 R9 Res., Chip 100k 0.06W 5% 0603 Vishay CRCW0603100KJNEA
10 0 R10 Res., 0805 Optional
11 1 R11 Res., Chip 0Ω 0.33W 6A 0805 Vishay CRCW08050000ZOEA
12 1 R12 Res., Chip 0Ω 0.5W 10A 1206 Vishay CRCW12060000ZOEA
13 0 R13, R14, R16, R19, R20,
R23
Res., 0603 Optional
14 0 R15 Res., 1206 Optional
15 0 R17, R18, R22 Res., 0402 Optional
16 1 R24 Res., Chip 0Ω 0.25W 5A 0603 Vishay CRCW06030000Z0EA
Hardware
1 9 E1-E5, E7, E8, E12, E13 Turret, Testpoint Mill Max 2501-2-00-80-00-00-07-0
2 7 E6, E9-E11, E14-E16 Turret, Testpoint Mill Max 2308-2-00-80-00-00-07-0
P1-P3P4-P6P7-P8

DC2079A

Mfr. #:
Buy DC2079A
Manufacturer:
Analog Devices Inc.
Description:
LED Lighting Development Tools LT3954 Demo Board ? 40VIN 40VOUT LED Dri
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
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