XR76205EL-Q Datasheet, PDF (20/25 Pages) Exar Corporation – Power Management

System Controls (Continued)
Supervisors
Supervisory circuits ensure safe operating conditions for microprocessor and memory-
based systems. By monitoring one or more system supplies, supervisory circuits
provide basic protection such as power-on reset as well as fault monitoring during
power-up, power down and undervoltage (brownout) conditions. Additional functions
typically include a watchdog timer, a manual reset and battery backup supply switching.
Applications
■■ _{Mother boards}
■■ _{Telecom and datacom equipment}
■■ _{Medical and industrial instrumentation}
Part
Number
SP690A
Channel(s)
1
Reset
Threshold
(V)
Reset Reset
Accuracy Active
4.65
125mV
Low
Operating
Voltage(V)
Min
Max
1
5.5
SP690S
1
2.925
75mV
Low
1
5.5
SP690T
1
3.075
75mV
Low
1
5.5
SP691
1
4.65
125mV Low/High
1
5.5
SP705
1
SP706
1
SP706R
1
SP706S
1
SP706T
1
SP707
1
SP708
1
SP708R
1
SP708S
1
SP708T
1
4.65
150mV
Low
1.1
5.5
4.40
150mV
Low
1.1
5.5
2.63
80mV
Low
1.1
5.5
2.93
80mV
Low
1.1
5.5
3.08
80mV
Low
1.1
5.5
4.65
150mV Low/High
1.1
5.5
4.40
150mV Low/High
1.1
5.5
2.63
80mV Low/High
1.1
5.5
2.93
80mV Low/High
1.1
5.5
3.08
80mV Low/High
1.1
5.5
SP791
SP809
SP809N
SP810
SP813
20
1
4.65
150mV
High
1
5.5
1
2.3, 2.6, 2.9
3.1, 4.6
1.50%
Low
0.9
6
1
2.3, 2.9
3.1, 4.6
1.50%
Low
0.9
6
1
2.6, 4.4
1.50%
High
0.9
6
1
4.65
150mV
High
1.1
5.5
Quiescent
Current
(μA)
35
25
25
35
40
40
25
25
25
40
40
25
25
25
40
1
1
1
40
Package Features
NSOIC-8
PDIP-8
NSOIC-8
NSOIC-8
NSOIC-16
WSOIC-16
NSOIC-8
MSOP-8
NSOIC-8
MSOP-8
NSOIC-8
MSOP-8
NSOIC-8
MSOP-8
NSOIC-8
MSOP-8
NSOIC-8
MSOP-8
NSOIC-8
NSOIC-8
NSOIC-8
MSOP-8
NSOIC-8
NSOIC-16
SOT23-3
SOT23-3
SOT23-3
NSOIC-8
PDIP-8
■■ _{Watchdog timer}
■■ _{Back-up battery switchover}
■■ _{Power fail, low battery indicator}
■■ _{Watchdog timer}
■■ _{Back-up battery switchover}
■■ _{Power fail, low battery indicator}
■■ _{Watchdog timer}
■■ _{Back-up battery switchover}
■■ _{Power fail, low battery indicator}
■■ _{Programmable watchdog timer}
■■ _{Back-up battery switchover}
■■ _{Power fail, low battery indicator}
■■ _{Chip enable gating}
■■ _{Watchdog timer}
■■ _{Power fail, low battery indicator}
■■ _{Manual reset}
■■ _{Watchdog timer}
■■ _{Power fail, low battery indicator}
■■ _{Manual reset}
■■ _{Watchdog timer}
■■ _{Power fail, low battery indicator}
■■ _{Manual reset}
■■ _{Watchdog timer}
■■ _{Power fail, low battery indicator}
■■ _{Manual reset}
■■ _{Watchdog timer}
■■ _{Power fail, low battery indicator}
■■ _{Manual reset}
■■ _{Power fail, low battery indicator}
■■ _{Manual reset}
■■ _{Power fail, low battery indicator}
■■ _{Manual reset}
■■ _{Power fail, low battery indicator}
■■ _{Manual reset}
■■ _{Power fail, low battery indicator}
■■ _{Manual reset}
■■ _{Power fail, low battery indicator}
■■ _{Manual reset}
■■ _{Programmable watchdog timer}
■■ _{Back-up battery switchover}
■■ _{Power fail, low battery indicator}
■■ _{Chip enable gating}
■■ _{Manual reset}
■■ _{140ms reset pulse width}
■■ _{Push-pull output}
■■ _{140ms reset pulse width}
■■ _{Open drain output}
■■ _{140ms reset pulse width}
■■ _{Watchdog timer}
■■ _{Manual reset}