DC1871A - Schematic

5
4
3
2
1
REVISION HISTORY
D+
RB1
1k
1206
RTB
40.2k
1206
RA2
4.53k
1206
RA1
4.53k
1206
RTA
110k
1206
E8
VCC
Q1
MMBT3906
3
2
DIODE SELECT
1
Q1
2
3
EXT
JP1
1
2
3
4
20
1
2
5
3
1
19
INT
INT&EXT
EXT
6
4
2
DS
5
3
1
2
11
OV
VL1
UV
DS
VCC
B
VH1
TO2
TO1
VPTAT
PS
18
JP3
HD2X3-079
D-
10
21 GND
17 GND
GND
6
4
2
VT2
VL2
VCC
VCC
OPEN
GND
D+
VH2
3
PS
VT1
TMR
OFF
R3
330
LED1
LN1251C
RED
UV
R4
330
TO2
LED2
LN1251C
RED
R5
330
TO1
LED3
LN1251C
RED
VCC
LED4
LN1251C
RED
LED5
LN1351C
GRN
VCC
C
(QFN20UD-3X3)
VREF
9
5
R2
330
OV
VCC
C
OT @ 100C
E11
UT @ 0C
6
R6
10k
7
R7
10k
R8
10k
R9
10k
14
E12
15
E13
13
E14
12
E15
8
E16
16
GND
VCC
R1
330
U1
LTC2995IUD
E10
LED ON/OFF
ON
VCC
2.25V - 5.5V
JP2
C1
470pF
VCC
C2
0.1uF
0402
D
1
RB2
1k
1206
E7
2
RTC
30.9k
1206
10-11-11
E9
1
RC1
44.2k
1206
DATE
LEO C.
D-
2
E6
RC2
115k
1206
APPROVED
VCC
VREF
E5
DESCRIPTION
PRODUCTION
1
E4
2
2
E3
REV
__
1
E2
GND
1
E1
5V
+/-10% MONITOR
GND VIN1
2
12V
+/-10% MONITOR
GND VIN2
1
D
ECO
R10
OPT
VCC
GND
OV
UV
TO2
TO1
VPTAT
E17
GND
0402
C3
22nF
0402
B
200ms DELAY
JP4
HD2X3-079
PS
VCC
OPEN
GND
VT1
UT
OT
UT
VT2
OT
OT
UT
CUSTOMER NOTICE
A
LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A
CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS;
HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO PCB DES.
VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL
APP ENG.
APPLICATION. COMPONENT SUBSTITUTION AND PRINTED
CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT
PERFORMANCE OR RELIABILITY. CONTACT LINEAR
TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE.
NOTES: UNLESS OTHERWISE SPECIFIED
1. ALL RESISTORS ARE IN OHMS, 0603.
ALL CAPACITORS ARE IN MICROFARADS, 0603.
2. INSTALL SHUNTS AS SHOWN.
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
5
APPROVALS
4
3
TECHNOLOGY
KIM T.
LEO C.
1630 McCarthy Blvd.
Milpitas, CA 95035
Phone: (408)432-1900 www.linear.com
Fax: (408)434-0507
LTC Confidential-For Customer Use Only
TITLE: SCHEMATIC
VOLTAGE AND TEMPERATURE MONITOR
SIZE
N/A
SCALE = NONE
2
DATE:
IC NO.
LTC2995IUD
REV.
2
DEMO CIRCUIT 1871A
10/11/2011, 11:02 AM
SHEET 1
1
OF 1
A
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