DC891A - Schematic

5
VIN
6V-20V
GND
DONE
E1
VIN
C6
10UF,25V
CHARGE
1
U1
LT3750EMS
DONE
R8
100K
CHARGE
JP1
CHARGE
STOP
GO
1
2
3
4
C9
0.1UF
R5
2.49K
5
VTRANS
RBG
10
DONE
RVOUT 9
CHARGE RDCM 8
VCC
GATE 7
C1
22UF
25V
1812
C3
22UF
25V
1812
+C4
150UF
35V
6
8
12
5
R6
60.4K
9
R9
40.2K
1
D1
MURS160T3
VOUT
C7
0.1UF
630V
1812
E3
VOUT
300V
+C8
400UF
330V
GND
4
E5
GND
10
C
SOURCE 6
GND
C2
22UF
25V
1812
D
WARNING, HIGH VOLTAGE!
OPERATION BY TRAINED
PERSONNEL ONLY
Q1
PH20100S
4
3
1
2
3
C
C5
51PF
R1
0
1210
R7
100K
E6
2
T1
DCT20EFD
7
E2
E4
3
5
6
7
8
9
D
4
JP2
OUTPUT BLEEDER
NORMAL
OPERATION
1
Q2
KSH50
3
DISCHARGE
R11
100K
1206
R2 R3 R4
33K 33K 33K
1206 1206 1206
2
R10
0.01
1%
0805
B
B
SAFETY CIRCUIT-NOT NORMALLY
USED IN PRODUCTION PRODUCTS
NOTES: UNLESS OTHERWISE SPECIFIED
1. ALL RESISTORS ARE IN OHMS, 0603.
ALL CAPACITORS ARE 0603.
A
2. INSTALL SHUNTS ON JP1-JP2 PIN 2 AND 3.
CUSTOMER NOTICE
CONTRACT NO.
LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A
CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS;
HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO
VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL
APPLICATION. COMPONENT SUBSTITUTION AND PRINTED
CIRUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT
PERFORMANCE OR RELIABILITY. CONTACT LINEAR
TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE.
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
5
4
3
APPROVALS
DRAWN:
CHECKED:
APPROVED:
ENGINEER: DAVID NG
DESIGNER:
TECHNOLOGY
KIM T.
TITLE:
1630 McCarthy Blvd.
Milpitas, CA 95035
Phone: (408)432-1900
Fax: (408)434-0507
LTC Confidential-For Customer Use Only
SCHEMATIC
A
HIGH CURRENT CAPACITIVE CHARGING CIRCUIT
SIZE
DWG NO.
A
DATE:
DC891A-1 * LT3750EMS
Wednesday, June 22, 2005
2
SHEET 1
1
REV
A
OF 1
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