Datasheet

LT3959
22
3959fa
For more information www.linear.com/LT3959
Typical applicaTions
2.5V to 8V Input, 12V LED Driver
Efficiency vs V
IN
3959 TA04
DRIVE
LT3959
L1
8.2µH
V
IN
SW
L1: TOKO 962BS-BR2M
D1: VISHAY SILICONIX 20BQ030
DZ1: CENTRAL SEMICONDUCTOR CMHZ5252B
GND
FBX
RT SS
INTV
CC
EN/UVLO
PGOOD
SYNC
SGND
R2
121k
V
C
D1
DZ1
24V
GNDK
R1
124k
R
T
27.4k
300kHz
C
VCC
4.7µF
10V
X5R
C
SS
0.1µF
R
C
4.99k
C
C
22nF
R4
3.48k
R5
0.5Ω
C
OUT
22µF
16V
X5R
×2
12V LEDs
500mA
V
OUT
V
IN
2.5V TO 8V
C
IN
22µF
16V
X5R
R3
7.68k
V
IN
(V)
2
EFFICIENCY (%)
90
94
7
3959 TA04b
86
543 6 8
84
88
92
82