LTC1235
ABSOLUTE MAXIMUM RATINGS
(Notes 1 and 2)
Terminal Voltage
V
CC
....................................................... –0.3V to 6.0V
V
BATT
.................................................... –0.3V to 6.0V
All Other Inputs ........................–0.3V to (V
CC
+ 0.3V)
Input Current
V
CC
..................................................................200mA
V
BATT
.................................................................50mA
V
OUT
Output Current ................... Short Circuit Protected
Power Dissipation ...............................................500mW
Operating Temperature Range
LTC1235C ................................................ 0°C to 70°C
Storage Temperature Range................... –65°C to 150°C
Lead Temperature (Soldering, 10 sec.) ................. 300°C
PIN CONFIGURATION
TOP VIEW
V
BATT
V
OUT
V
CC
GND
BATT ON
LOW LINE
PB RST
BACKUP
1
2
3
4
5
6
7
8
LTC1235
16 RESET
15
14
13
12
11
10
9
RESET
WDO
CE
IN
CE
OUT
WDI
PFO
PFI
V
BATT
V
OUT
V
CC
GND
BATT ON
LOW LINE
PB RST
BACKUP
1
2
3
4
LTC1235
5
6
7
8
12
11
10
9
SW PACKAGE
16-LEAD PLASTIC SOL
TOP VIEW
16
15
14
13
PRESET
PRESET
WDO
CE
IN
CE
OUT
WDI
PFO
PFI
N PACKAGE
16-LEAD PLASTIC DIP
T
JMAX
= 110°C,
θ
JA
= 130°C/W
T
JMAX
= 110°C,
θ
JA
= 130°C/W
CONDITIONS:PCB MOUNT ON FR4 MATERIAL,
STILL AIR AT 25°C COPPER TRACE
ORDER INFORMATION
LEAD FREE FINISH
LTC1235CN#PBF
LTC1235CSW#PBF
TAPE AND REEL
LTC1235CN#TRPBF
LTC1235CSW#TRPBF
PART MARKING
LTC1235CN
LTC1235CSW
PACKAGE DESCRIPTION
16-Lead Plastic DIP
16-Lead Plastic SOL
TEMPERATURE RANGE
0°C to 70°C
0°C to 70°C
Consult LTC Marketing for parts specified with wider operating temperature ranges.
Consult LTC Marketing for information on non-standard lead based finish parts.
For more information on lead free part marking, go to:
http://www.linear.com/leadfree/
For more information on tape and reel specifications, go to:
http://www.linear.com/tapeandreel/
PRODUCT SELECTION GUIDE
PINS
LTC1235
LTC690
LTC691
LTC694
LTC695
LTC699
LTC1232
16
8
16
8
16
8
8
RESET
X
X
X
X
X
X
X
WATCHDOG
TIMER
X
X
X
X
X
X
X
X
1235fa
BATTERY
BACKUP
X
X
X
X
X
POWER FAIL
WARNING
X
X
X
X
X
RAM WRITE
PROTECT
X
X
X
PUSH-BUTTON
RESET
X
CONDITIONAL
BATTERY BACKUP
X
2
LINER [ LINEAR TECHNOLOGY ]
