CAT1026WI-42-G ON Semiconductor, CAT1026WI-42-G Datasheet - Page 3

• Manufacturer Part Number: CAT1026WI-42-G
• Description: Supervisory Circuits CPU w/2K
• Manufacturer: ON Semiconductor

Specifications of CAT1026WI-42-G

• Product Category: Supervisory Circuits
• Rohs: yes
• Number Of Voltages Monitored: 1
• Monitored Voltage: 3 V, 3.3 V, 5 V
• Undervoltage Threshold: 4.25 V
• Overvoltage Threshold: 4.5 V
• Manual Reset: Not Resettable
• Watchdog: No Watchdog
• Supply Voltage - Max: 5.5 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Package / Case: SOIC-8 Wide
• Maximum Power Dissipation: 1000 mW
• Minimum Operating Temperature: - 40 C
• Supply Current (typ): 3000 uA
• Supply Voltage - Min: 2.7 V

RESET/RESET: RESET OUTPUTs
(RESET CAT1026 Only)
manual reset trigger input. By forcing a reset condition on
the pin the device will initiate and maintain a reset condition.
The RESET pin must be connected through a pull−down
resistor, and the RESET pin must be connected through a
pull−up resistor.
SDA: SERIAL DATA ADDRESS
all data into and out of the device. The SDA pin is an open
drain output and can be wire−ORed with other open drain or
open collector outputs.
SCL: SERIAL CLOCK
V
compared against CAT1026 and CAT1027 internal
reference voltage of 1.25 V typically. Whenever the input
voltage is lower than 1.25 V, the open drain V
will be driven low. An external resistor divider is used to set
the voltage level to be sensed. Connect V
unused.
V
1.25 V and goes high when V
voltage.
WDI
INTERRUPT
watchdog timer. If a transition from high to low or low to
high does not occur every 1.6 seconds, the RESET outputs
will be driven active.
SENSE
LOW
These are open drain pins and RESET can be used as a
The bidirectional serial data/address pin is used to transfer
Serial clock input.
The V
This open drain output goes low when V
Watchdog Timer Interrupt Input is used to reset the
: AUXILIARY VOLTAGE MONITOR OUTPUT
: AUXILIARY VOLTAGE MONITOR INPUT
SENSE
(CAT1027
input is a second voltage monitor which is
V
V
RESET
RESET
SENSE
SENSE
V
V
LOW
LOW
V
V
SS
SS
Only):
TSSOP Package (Y)
MSOP Package (Z)
SOIC Package (W)
1
2
3
4
1
2
3
4
DIP Package (L)
CAT1026
CAT1027
SENSE
WATCHDOG
exceeds the reference
8
7
6
5
8
7
6
5
SENSE
SENSE
V
RESET
SCL
SDA
V
WDI
SCL
SDA
CC
CC
LOW
is less than
to V
PIN CONFIGURATION
PIN DESCRIPTION
TIMER
http://onsemi.com
output
CC
if
3
Table 2. PIN FUNCTION
Table 3. OPERATING TEMPERATURE RANGE
Pin Name
Extended
Industrial
RESET
RESET
V
V
SDA
SENSE
SCL
V
WDI
V
LOW
CC
SS
RESET
0.8 mm maximum height − (ZD4)
SDA
SDA
TDFN Package: 3 mm x 3 mm
SCL
WDI
SCL
V
V
CC
CC
8
7
6
5
8
7
6
5
(Bottom View)
Active Low Reset Input/Output
Ground
Serial Data/Address
Clock Input
Active High Reset Output
(CAT1026 Only)
Power Supply
Auxiliary Voltage Monitor Input
Auxiliary Voltage Monitor Output
Watchdog Timer Interrupt
(CAT1027 Only)
−40°C to 85°C
−40°C to 125°C
CAT1026
CAT1027
1
2
3
4
1
2
3
4
Function
V
RESET
V
V
V
RESET
V
V
LOW
SENSE
SS
LOW
SENSE
SS