LT3485-0/LT3485-1/
LT3485-2/LT3485-3
16
34850123fb
Figure 11. LT3485-3 Photoflash Charger Uses High Efficiency 3mm Tall Transformer
Figure 10. LT3485-2 Photoflash Charger Uses High Efficiency 4mm Tall Transformer
TYPICAL APPLICATIO S
U
C2
0.22µF
V
IN
2.5V TO 8V
DONE
CHARGE
C1
4.7µF
R1
100k
T1
1:10.2
V
BAT
1.8V TO 8V
320V
3485 F10
C
OUT
PHOTOFLASH
CAPACITOR
C1: 4.7µF, X5R OR X7R, 10V
C2: 0.22µF, X5R or X7R, 10V
T1: KIJIMA MUSEN PART# SBL-5.6-1, L
PRI
= 10µH, N = 10.2
D1: DIODES INC MMBD3004S DUAL DIODE CONNECTED IN SERIES
R1: PULL UP RESISTOR NEEDED IF DONE PIN USED
D1
CHARGE
V
IN
VMONT
TO MICRO
TO GATE OF IGBT
IGBTOUT
IGBTPWR
IGBTIN
DONE
LT3485-2
GND
V
BAT
SW
C2
0.22µF
V
IN
2.5V TO 8V
DONE
CHARGE
C1
4.7µF
R1
100k
T1
1:10.2
V
BAT
1.8V TO 8V
320V
3485 F11
C
OUT
PHOTOFLASH
CAPACITOR
C1: 4.7µF, X5R OR X7R, 10V
C2: 0.22µF, X5R or X7R, 10V
T1: TDK LDT565630T-041, L
PRI
= 4.7µH, N = 10.4
D1: DIODES INC MMBD3004S DUAL DIODE CONNECTED IN SERIES
R1: PULL UP RESISTOR NEEDED IF DONE PIN USED
D1
CHARGE
V
IN
V
MONT
TO MICRO
TO GATE OF IGBT
IGBTOUT
IGBTPWR
IGBTIN
DONE
LT3485-3
GND
V
BAT
SW
