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参数资料
| 型号： | ADM9690AR |
| 厂商： | ANALOG DEVICES INC |
| 元件分类： | 电源管理 |
| 英文描述： | Power Supply and Watchdog Timer Monitoring Circuit |
| 中文描述： | 1-CHANNEL POWER SUPPLY MANAGEMENT CKT, PDSO8 |
| 封装： | SOIC-8 |
| 文件页数： | 3/6页 |
| 文件大小： | 76K |
| 代理商： | ADM9690AR |
ADM9690
–3–
REV. A
ABSOLUTE MAXIMUM RATINGS*
(T
A
= +25
°
C unless otherwise noted)
V
CC
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.3 V to +6 V
V
MON
. . . . . . . . . . . . . . . . . . . . . . . . . –0.3 V to V
CC
+ 0.3 V
Input Current
V
CC
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 200 mA
GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 200 mA
Digital Output Current . . . . . . . . . . . . . . . . . . . . . . . 200 mA
Power Dissipation, R-8 SOIC . . . . . . . . . . . . . . . . . . 400 mW
θ
JA
Thermal Impedance . . . . . . . . . . . . . . . . . . . . . . 120
°
C/W
Industrial (A Version) . . . . . . . . . . . . . . . . . . –40
°
C to +85
°
C
Lead Temperature (Soldering, 10 secs) . . . . . . . . . . . +300
°
C
Vapor Phase (60 secs) . . . . . . . . . . . . . . . . . . . . . . +215
°
C
Infrared (15 secs) . . . . . . . . . . . . . . . . . . . . . . . . . . +220
°
C
Storage Temperature Range . . . . . . . . . . . . –65
°
C to +150
°
C
ESD Rating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 kV
*Stresses above those listed under Absolute Maximum Ratings may cause perma-
nent damage to the device. This is a stress rating only; functional operation of the
device at these or any other conditions above those listed in the operational sections
of this specification is not implied. Exposure to absolute maximum ratings for
extended periods of time may affect device reliability.
ORDERING GUIDE
Temperature
Range
–40
°
C to +85
°
C
Package
Description
Package
Option
Model
ADM9690AR
8-Lead Narrow
Body SOIC
SO-8
PIN FUNCTION DESCRIPTIONS
Mnemonic
Function
V
CC
V
MON
GND
RESET(1)
Power Supply Input; +5 V.
Voltage Monitoring Input.
0 V. Ground reference for all signals.
Logic Output. RESET(1) goes low if V
MON
falls below the Reset Threshold or the Watch-
dog timer is not serviced within its timeout
period. The reset threshold is typically 4.4 V
for the ADM9690. RESET(1) remains low
for 50 ms after V
CC
returns above the thresh-
old. RESET(1) also goes low for 50 ms if the
Watchdog Timer is not serviced within its
timeout period.
Logic Output. RESET(2) goes low simulta-
neously with RESET(1) but remains low for
an additional 10 ms.
Watchdog Input. If an edge is not detected on
WDI within the selectable watchdog timeout
period, RESET(1) and RESET(2) are forced
low for their respective timeout periods. The
watchdog timer restarts with each positive
or negative going transition on the WDI
line. Following a reset it is restarted when
RESET(1) goes inactive (high). The Watch-
dog Timer may be disabled if WDI is left
floating or is driven to midsupply.
Watchdog Timeout selection inputs. Refer to
Table I.
RESET(2)
WDI
SEL1, 2
PIN CONFIGURATION
1
2
3
4
8
7
6
5
(TOP VIEW
ADM9690
V
MON
WDI
V
CC
GND
SEL1
SEL2
RESET(1)
RESET(2)
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