LT3598EUF(RevA) データシートの表示（PDF） - Linear Technology
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LT3598EUF Datasheet PDF : 24 Pages
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LT3598
TYPICAL APPLICATIONS
LED Driver for 30 White LEDs with 60mA Each String
PVIN
6V TO 40V
C1
2.2μF
VIN
5V
C3
2.2μF
L1
10μH
D1
VIN
R6
100k
OPENLED
SHDN SHDN
CTRL CTRL
PWM PWM
SW
VOUT
VO_SW
FB
R4
1.00M
R5
30.9k
R1
51.1k
SYNC
SYNC
RT
LT3598
R8
60.4k
RHOT
10k
RNTC
100k
R7
100k
VREF
LED1
CTRL
LED2
LED3
LED4
LED5
LED6
TSET ISET
SS
GND VC
C5
47pF R3
9.76k
C4
0.1μF
RC
2.61k
CC
15nF
C1: TAIYO YUDEN GMK325BJ225ML
C2: MURATA GRM32ER71H475KA88L
C3: TAIYO YUDEN LMK212BJ225MG
D1: VISHAY SS3H9
L1: WÜRTH ELEKTRONIK 744777410
RNTC: MURATA NCP18WF104J03RB
C2
4.7μF
60mA
3598 TA03a
Efficiency (PWM Dimming)
100
95
PVIN = 25V
90
PVIN = 12V
85
80
75
70
65
60
0 20 40 60 80 100 120 140 160 180
TOTAL LED CURRENT (mA)
3598 TA03b
Dimming Range (1000:1 PWM) at 125°C
Junction Temperature, 10ms Period
PWM
5V/DIV
SW
20V/DIV
ILED1
100mA/DIV
3598
2μs/DIV
3598fa
18
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