MAX6302CSA-T Maxim Integrated, MAX6302CSA-T Datasheet - Page 7

no-image

MAX6302CSA-T

Manufacturer Part Number
MAX6302CSA-T
Description
Supervisory Circuits
Manufacturer
Maxim Integrated
Series
MAX6301, MAX6302, MAX6303, MAX6304r
Datasheet

Specifications of MAX6302CSA-T

Number Of Voltages Monitored
1
Undervoltage Threshold
Adjustable
Overvoltage Threshold
Adjustable
Output Type
Active High, Open Drain
Manual Reset
Resettable
Watchdog
Watchdog
Battery Backup Switching
No Backup
Power-up Reset Delay (typ)
5.2 ms
Supply Voltage - Max
5.5 V
Maximum Operating Temperature
+ 70 C
Mounting Style
SMD/SMT
Package / Case
SOIC-8 Narrow
Chip Enable Signals
No
Maximum Power Dissipation
471 mW
Minimum Operating Temperature
0 C
Power Fail Detection
No
Supply Current (typ)
4 uA
Supply Voltage - Min
1.31 V
Figure 2a. Watchdog Timing Diagram, WDS = GND
Figure 2b. Watchdog Timing Diagram, WDS = V
watchdog counter. When WDI is left unconnected, the
watchdog timer is cleared by this internal driver just
before the timeout period is reached (the internal driver
pulls WDI high at about 94% of t
three-stated, the maximum allowable leakage current of
the device driving WDI is 10µA.
In normal mode (WDS = GND), the watchdog timer
cannot be disabled by three-stating WDI. WDI is a
high-impedance input in this mode. Do not leave WDI
unconnected in normal mode.
The reset timeout period is adjustable to accommodate
a variety of µP applications. Adjust the reset timeout
period (t
(C
the reset timeout capacitor as follows:
SRT
NORMAL MODE (WDS = GND)
EXTENDED MODE (WDS = V
) between SRT and ground (Figure 3). Calculate
RESET
RESET
WDI
WDI
RP
Selecting the Reset and Watchdog
V
V
V
V
) by connecting a specific value capacitor
0V
0V
CC
0V
CC
0V
CC
CC
Applications Information
_______________________________________________________________________________________
+5V, Low-Power µP Supervisory Circuits
C
CC
SRT
)
= t
RP
/2.67
Timeout Capacitor
WD
with Adjustable Reset/Watchdog
). When WDI is
CC
t
WD
t
WD
x 500
Figure 3. Calculating the Reset (C
Timeout Capacitor Values
C
SRT
C
SRT
C
t
RP
SRT
= t
in µs
2.67
in pF
RP
C
SWT
t
RP
C
C
t
WD
GND
SRT
SWT
SWT
SWT
in µs
= t
in pF
MAX6301
MAX6302
MAX6303
MAX6304
2.67
WD
SRT
) and Watchdog (C
V
CC
V
CC
0.1µF
t
RP
SWT
)
7

Related parts for MAX6302CSA-T