Datasheet
LTC1235
2
1235fa
PIN CONFIGURATION
ABSOLUTE MAXIMUM RATINGS
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
(Notes 1 and 2)
ORDER INFORMATION
LEAD FREE FINISH TAPE AND REEL PART MARKING PACKAGE DESCRIPTION TEMPERATURE RANGE
LTC1235CN#PBF LTC1235CN#TRPBF LTC1235CN 16-Lead Plastic DIP 0°C to 70°C
LTC1235CSW#PBF LTC1235CSW#TRPBF LTC1235CSW 16-Lead Plastic SOL 0°C to 70°C
Consult LTC Marketing for parts specifi ed with wider operating temperature ranges.
Consult LTC Marketing for information on non-standard lead based fi nish parts.
For more information on lead free part marking, go to:
http://www.linear.com/leadfree/
For more information on tape and reel specifi cations, go to:
http://www.linear.com/tapeandreel/
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
1
2
3
4
5
6
7
8
TOP VIEW
WDO
V
CC
V
OUT
V
BATT
GND
LTC1235
CE IN
RESET
N PACKAGE
16-LEAD PLASTIC DIP
9
16
15
14
13
12
11
10
BATT ON
PB RST
LOW LINE
BACKUP
RESET
CE OUT
WDI
PFI
PFO
LTC1235
1
2
3
4
5
6
7
8
TOP VIEW
WDO
V
CC
V
OUT
V
BATT
GND
SW PACKAGE
16-LEAD PLASTIC SOL
CE IN
PRESET
9
16
15
14
13
12
11
10
BATT ON
PB RST
LOW LINE
BACKUP
PRESET
CE OUT
WDI
PFI
PFO
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
PRODUCT SELECTION GUIDE
PINS RESET
WATCHDOG
TIMER
BATTERY
BACKUP
POWER FAIL
WARNING
RAM WRITE
PROTECT
PUSH-BUTTON
RESET
CONDITIONAL
BATTERY BACKUP
LTC1235 16 X X X X X X X
LTC690 8 X X X X
LTC691 16 X X X X X
LTC694 8 X X X X
LTC695 16 X X X X X
LTC699 8 X X
LTC1232 8 X X X