LT3585-0 LINER [Linear Technology], LT3585-0 Datasheet - Page 9

• Manufacturer Part Number: LT3585-0
• Description: Photofl ash Chargers with Adjustable Input Current and IGBT Drivers
• Manufacturer: LINER [Linear Technology]

SI PLIFIED
7
2
1
W
CHRG/IADJ
IGBTPWR
IGBTIN
Q3
6
DONE
MASTER
LATCH
POWER
CHIP
ONE SHOT
V
Q
S
IGBT DRIVE
IN
CIRCUITRY
ENABLE
Q
R
BLOCK DIAGRA
–
4
Q1
V
IN
A5
2.5V
MAX
C2
+
UVLO
TO BATTERY
UVLO
MAX
1.5V
+
COMPARATOR
A4
V
OUT
–
C1
A2
W
5
+
–
V
BAT
REFERENCE
1.25V
Figure 1
Q2
R1
2.5k
60k
R2
COMPARATOR
DCM
R
DOMINANT
VARIABLE
SWITCH
DELAY
LATCH
RESET
A3
S
–
+
Q
LT3585-0/LT3585-1
LT3585-2/LT3585-3
DRIVER
+
–
A1
130mV
+
–
LT3585-3, R
LT3585-0, R
LT3585-2, R
LT3585-1, R
20mV
+ –
8
Q1
M
M
M
M
IGBTPU
IGBTPD
R
= 12mΩ
= 17mΩ
= 24mΩ
= 36mΩ
SW
M
GND
10
3
9
•
T1
3585 F01
•
D1
+
9
3585f
C
V
OUT
OUT