LT3751 Ver la hoja de datos (PDF) - Linear Technology
Número de pieza
componentes Descripción
Fabricante
LT3751 Datasheet PDF : 28 Pages
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LT3751
TYPICAL APPLICATION
300V Regulated Power Supply
VTRANS
24V
C2
5× 2.2μF
R6
40.2k
C3
680μF
RVTRANS
R7
OFF ON
CHARGE
CLAMP
18.2k
RDCM
RVOUT
VCC
24V
C1
10μF
TO
MICRO
VCC
DONE
FAULT
HVGATE
LVGATE
VCC
R1
CSP
432k
UVLO1
VTRANS
R2
LT3751
475k
OVLO1
CSN
R3
432k
UVLO2
FB
VCC
R4
475k
OVLO2
R9
1.13k
GND
RBG
3751 TA05
T1
1:10
D1
•
•
+ C4
20μF
VOUT
300V
0mA TO 270mA
M1
R8
274k
R5
6mΩ
C5
10nF
C1: 25V X5R OR X7R CERAMIC CAPACITOR
C2: 25V X5R OR X7R CERAMIC CAPACITOR
C3: 25V ELECTROLYTIC
C4: 330V RUBYCON PHOTOFLASH CAPACITOR
D1: VISHAY USIM 1000V
M1: FAIRCHILD FQP34N20L
R1 THROUGH R4: USE 1% 0805 RESISTORS
R5: USE TWO PARALLEL 5mΩ IRC LR SERIES 2512 RESISTORS
T1: SUMIDA PS07-299, 20A TRANSFORMER
RELATED PARTS
PART NUMBER
DESCRIPTION
LTC3225
150mA Supercapacitor Charger
LT3420/LT3420-1
1.4A/1A, Photoflash Capacitor Charger
with Automatic Top-Off
LT3468/LT3468-1
LT3468-2
1.4A, 1A, 0.7A, Photoflash Capacitor Charger
LT3484-0/LT3484-1 1.4A, 0.7A, 1A Photoflash Capacitor Charger
LT3484-2
LT3485-0/LT3485-1
LT3485-2/LT3485-3
1.4A, 0.7A, 1A, 2A Photoflash Capacitor
Charger with Output Voltage Monitor and
Integrated IGBT
LT3585-0/LT3585-1
LT3585-2/LT3585-3
1.2A, 0.55A, 0.85A, 1.7A Photoflash
Capacitor Charger with Adjustable Input
Current and IGBT Drivers
LT3750
Capacitor Charger Controller
ThinSOT is a trademark of Linear Technology Corporation.
COMMENTS
VIN: 2.75V to 5.5V, Charges Two Supercapacitors in Series to 4.8V or 5.3V
Charges 220μF to 320V in 3.7 Seconds from 5V, VIN: 2.2V to 16V, ISD < 1μA,
10-Lead MS Package
VIN: 2.5V to 16V, Charge Time: 4.6 Seconds for LT3468 (0V to 320V, 100μF,
VIN = 3.6V), ISD < 1μA, ThinSOT™ Package
VIN: 1.8V to 16V, Charge Time: 4.6 Seconds for LT3484-0 (0V to 320V, 100μF,
VIN = 3.6V), ISD < 1μA, 2mm × 3mm 6-Lead DFN Package
VIN: 1.8V to 10V, Charge Time: 3.7 Seconds for LT3485-0 (0V to 320V, 100μF,
VIN = 3.6V), ISD < 1μA, 3mm × 3mm 10-Lead DFN Package
VIN: 1.5V to 16V, Charge Time: 3.3 Seconds for LT3585-3 (0V to 320V, 100μF,
VIN = 3.6V), ISD < 1μA, 3mm × 2mm DFN-10 Package
VIN: 3V to 24V, Charge Time: 300ms for (0V to 300V, 100μF) MSOP-10 Package
28 Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900 ● FAX: (408) 434-0507 ● www.linear.com
3751f
LT 1108 • PRINTED IN USA
© LINEAR TECHNOLOGY CORPORATION 2008
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