LTC1235CS Linear Technology, LTC1235CS Datasheet - Page 2

• Manufacturer Part Number: LTC1235CS
• Manufacturer: Linear Technology

Specifications of LTC1235CS

• Number Of Elements: 1
• Monitored Voltage 1 (typ): 4.65V
• Battery Backup Switching: Yes
• Watchdog Timer: Yes
• Chip Enable Signals: Yes
• Reset Active Time: 280ms
• Manual Reset: Yes
• Package Type: SOL
• Operating Supply Voltage (min): 4.75V
• Operating Supply Voltage (max): 5.5V
• Reset Threshold Voltage (max): 4.75V
• Reset Threshold Voltage (min): 4.5V
• Power Dissipation: 500mW
• Operating Temp Range: 0C to 70C
• Operating Temperature Classification: Commercial
• Power Fail Detection: Yes
• Mounting: Surface Mount
• Pin Count: 16
• Supply Current: 1.5mA
• Lead Free Status / Rohs Status: Not Compliant

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