LT3751EUFD#PBF Linear Technology, LT3751EUFD#PBF Datasheet - Page 9
![IC CAPACITOR CHRG 20-QFN](/photos/6/68/66815/20_qfn_05-08-1711_sml.jpg)
LT3751EUFD#PBF
Manufacturer Part Number
LT3751EUFD#PBF
Description
IC CAPACITOR CHRG 20-QFN
Manufacturer
Linear Technology
Datasheet
1.LT3751EUFDPBF.pdf
(34 pages)
Specifications of LT3751EUFD#PBF
Applications
Photoflash Capacitor Charger
Current - Supply
5.5mA
Voltage - Supply
4.75 V ~ 24 V
Operating Temperature
-40°C ~ 125°C
Mounting Type
Surface Mount
Package / Case
20-QFN
Primary Input Voltage
24V
No. Of Outputs
1
No. Of Pins
20
Operating Temperature Range
-40°C To +125°C
Msl
MSL 1 - Unlimited
Supply Voltage Range
4.75V To 24V
Termination Type
SMD
Rohs Compliant
Yes
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
BLOCK DIAGRAM
V
12V
CC
V
TRANS
OFF
V
10μF
CC
ON
100k
R
R
R
R
191k
240k
191k
UVLO1
OVLO1
UVLO2
240k
OVLO2
100k
CHARGE
UVLO1
OVLO1
UVLO2
OVLO2
DONE
FAULT
V
CC
REFERENCE
OTLO
1.22V
3.8V
V
CC
55V
55V
55V
55V
S
Q
S
Q
MASTER
LATCH
+
–
–
+
+
–
–
+
+
–
R
Q
R
Q
UVLO/OVLO
COMPARATORS
FAULT
LATCH
INTERNAL
UVLO
GND
ONE-SHOT
1.33k
START-UP
R
ENABLE
GATE
DRIVER
COMPARATOR
BG
TO V
OUT
V
TRANS
RBG
12V
TO CHARGE
ONE-SHOT
COMPARATOR
ONE-SHOT
TEMP
+
26kHz ONE-SHOT
DIE
DCM
V
OUT
CLOCK
47μF
×2
COMPARATOR
160ºC
DCM
ONE-SHOT
CURRENT CONTROL
TIMING AND PEAK
CLOCK
26kHz
–
+
SWITCH
ONE-SHOT
LATCH
COUNTER
S
R
CLOCK
26kHz
Q
Q
REFERENCE
CONTROL
–
+
MODE
0.98V
RESET
CLK
COUNT
ERROR
GATE DRIVE
CIRCUITRY
AMP
COMPARATOR
60V CLAMPS
REFERENCE
INTERNAL
DIFF . AMP
11mV TO 106mV
1.22V
WITH
AUXILIARY
MODULATION
A1
MAIN
RV
40.2k
RV
TRANS
+
–
TRANS
V
+
+
–
–
CC
60V
162mV
106mV
REFERENCE
+–
+–
V
CC
1.22V
HVGATE
LVGATE
60V
60V
CLAMP
RV
RDCM
CSN
OUT
CSP
3751 BD
FB
10μF
RV
40.2k
R
18.2k
DCM
V
OUT
CC
1:10
•
T1
M1
R
12mΩ
•
SENSE
V
DRAIN
10nF
LT3751
D1
R
3.65M
R
10k
FBL
+
FBH
3751fb
9
C
V
450V
OUT
OUT