ADM823LYRJZ-R7 [ADI]

Supervisory Circuits with Watchdog and Manual Reset in 5-Lead SC70 and SOT-23; 监控电路,带有看门狗和手动复位功能5引脚SC70和SOT -23
ADM823LYRJZ-R7
型号: ADM823LYRJZ-R7
厂家: ADI    ADI
描述:

Supervisory Circuits with Watchdog and Manual Reset in 5-Lead SC70 and SOT-23
监控电路,带有看门狗和手动复位功能5引脚SC70和SOT -23

监控
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Supervisory Circuits with Watchdog and  
Manual Reset in 5-Lead SC70 and SOT-23  
ADM823/ADM824/ADM825  
Data Sheet  
FEATURES  
FUNCTIONAL BLOCK DIAGRAM  
Precision 2.5 V to 5 V power supply monitor  
7 reset threshold options: 2.19 V to 4.63 V  
140 ms (minimum) reset timeout  
Watchdog timer with 1.6 sec timeout (ADM823, ADM824)  
Manual reset input (ADM823, ADM825)  
Push-pull output stages  
ADM823  
V
CC  
V
CC  
RESET  
GENERATOR  
RESET  
V
REF  
DEBOUNCE  
MR  
(ADM823)  
, RESET (ADM824/ADM825)  
RESET  
RESET  
WATCHDOG  
DETECTOR  
Low power consumption: 5 µA  
Guaranteed reset output valid to VCC = 1 V  
Power supply glitch immunity  
Specified over automotive temperature range  
5-lead SC70 and SOT-23 packages  
GND  
WDI  
Figure 1.  
APPLICATIONS  
Microprocessor systems  
Computers  
Controllers  
Intelligent instruments  
Portable equipment  
GENERAL DESCRIPTION  
The ADM823/ADM824/ADM825 are supervisory circuits that  
monitor power supply voltage levels and code execution integrity  
in microprocessor-based systems. In addition to providing  
power-on reset signals, an on-chip watchdog timer can reset the  
microprocessor if it fails to strobe within a preset timeout  
period. A reset signal can also be asserted by an external push-  
button, through a manual reset input. The three parts feature  
different combinations of watchdog input, manual reset input,  
and output stage configuration, as shown in Table 1.  
These parts are available in a choice of seven reset threshold  
options ranging from 2.19 V to 4.63 V. The reset and watchdog  
timeout periods are fixed at 140 ms (minimum) and 1.6 sec  
(typical), respectively.  
The ADM823/ADM824/ADM825 are available in 5-lead SC70  
and SOT-23 packages and typically consume only 5 µA, making  
them suitable for use in low power, portable applications.  
Table 1. Selection Table  
Output Stage  
RESET  
RESET  
Part No.  
ADM823  
ADM824  
ADM825  
Watchdog Timer  
Manual Reset  
Yes  
Yes  
Yes  
Push-Pull  
Push-Pull  
Push-Pull  
Push-Pull  
Push-Pull  
Yes  
Rev. D  
Document Feedback  
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responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other  
rightsof third parties that may result fromits use. Specifications subject to change without notice. No  
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Trademarks andregisteredtrademarks are the property of their respective owners.  
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.  
Tel: 781.329.4700 ©2004–2013 Analog Devices, Inc. All rights reserved.  
Technical Support  
www.analog.com  
 
 
 
 
 
ADM823/ADM824/ADM825  
Data Sheet  
TABLE OF CONTENTS  
Features .............................................................................................. 1  
Reset Output ..................................................................................9  
Manual Reset Input .......................................................................9  
Watchdog Input .............................................................................9  
Applications Information .............................................................. 10  
Watchdog Input Current ........................................................... 10  
Negative-Going VCC Transients ................................................ 10  
Ensuring Reset Valid to VCC = 0 V........................................... 10  
Watchdog Software Considerations......................................... 10  
Outline Dimensions....................................................................... 11  
Ordering Guide .......................................................................... 11  
Applications....................................................................................... 1  
Functional Block Diagram .............................................................. 1  
General Description ......................................................................... 1  
Revision History ............................................................................... 2  
Specifications..................................................................................... 3  
Absolute Maximum Ratings............................................................ 5  
ESD Caution.................................................................................. 5  
Pin Configurations and Function Descriptions ........................... 6  
Typical Performance Characteristics ............................................. 7  
Circuit Description........................................................................... 9  
REVISION HISTORY  
7/13—Rev. C to Rev. D  
Change to Figure 16 ..........................................................................9  
Updated Outline Dimensions........................................................11  
10/10—Rev. B to Rev. C  
Updated Outline Dimensions....................................................... 11  
Changes to Ordering Guide .......................................................... 11  
5/08—Rev. A to Rev. B  
Changes to General Description Section ...................................... 1  
Changes to Table 4............................................................................ 6  
Changes to Ordering Guide .......................................................... 11  
2/07—Rev. 0 to Rev. A  
Updated Format..................................................................Universal  
Changes to Ordering Guide .......................................................... 11  
10/04—Revision 0: Initial Version  
Rev. D | Page 2 of 12  
 
Data Sheet  
ADM823/ADM824/ADM825  
SPECIFICATIONS  
VCC = 4.75 V to 5.5 V for ADM82xL, VCC = 4.5 V to 5.5 V for ADM82xM, VCC = 3.15 V to 3.6 V for ADM82xT, VCC = 3 V to 3.6 V  
for ADM82xS, VCC = 2.7 V to 3.6 V for ADM82xR, VCC = 2.38 V to 2.75 V for ADM82xZ, VCC = 2.25 V to 2.75 V for ADM82xY,  
TA = TMIN to TMAX, unless otherwise noted.  
Table 2.  
Parameter  
Min  
Typ  
Max  
Unit  
Test Conditions/Comments  
SUPPLY  
VCC Operating Voltage Range  
1
1.2  
5.5  
24  
12  
V
V
µA  
TA = 0°C to 70°C  
TA = TMIN to TMAX  
WDI and MR unconnected  
ADM82xL/M  
WDI and MR unconnected  
ADM82xT/S/R/Z/Y  
Supply Current  
10  
5
µA  
RESET THRESHOLD VOLTAGE  
ADM82xL  
4.56  
4.50  
4.31  
4.25  
3.04  
3.00  
2.89  
2.85  
2.59  
2.55  
2.28  
2.25  
2.16  
2.13  
4.63  
4.38  
3.08  
2.93  
2.63  
2.32  
2.19  
4.70  
4.75  
4.45  
4.50  
3.11  
3.15  
2.96  
3.00  
2.66  
2.70  
2.35  
2.38  
2.22  
2.25  
V
V
V
V
V
V
V
V
V
V
V
V
V
V
TA = 25°C  
TA = TMIN to TMAX  
TA = 25°C  
TA = TMIN to TMAX  
TA = 25°C  
TA = TMIN to TMAX  
TA = 25°C  
TA = TMIN to TMAX  
TA = 25°C  
TA = TMIN to TMAX  
TA = 25°C  
TA = TMIN to TMAX  
TA = 25°C  
TA = TMIN to TMAX  
ADM82xM  
ADM82xT  
ADM82xS  
ADM82xR  
ADM82xZ (SC70 Only)  
ADM82xY (SC70 Only)  
RESET THRESHOLD TEMPERATURE COEFFICIENT  
RESET THRESHOLD HYSTERESIS  
40  
10  
5
ppm/°C  
mV  
mV  
ms  
µs  
ADM82xL/M  
ADM82xT/S/R/Z/Y  
RESET TIMEOUT PERIOD  
VCC TO RESET DELAY  
RESET/RESET  
140  
200  
40  
280  
VTH − VCC = 100 mV  
RESET Output Voltage  
0.4  
0.3  
0.3  
V
V
V
V
V
V
V
V
VCC = VTH min, ISINK = 3.2 mA,  
ADM82xL/M  
VCC = VTH min, ISINK = 1.2 mA,  
ADM82xT/S/R/Z/Y  
TA = 0°C to 70°C, VCC = 1 V,  
VCC falling, ISINK = 50 µA  
VCC = VTH max, ISOURCE = 120 µA,  
ADM82xL/M  
VCC = VTH max, ISOURCE = 30 µA,  
ADM82xT/S/R/Z/Y  
VCC = VTH max, ISINK = 3.2 mA,  
ADM82xL/M  
VCC = VTH max, ISINK = 1.2 mA,  
ADM82xT/S/R/Z/Y  
VCC ≥ 1.8 V, ISOURCE = 150 µA  
VCC − 1.5  
0.8 × VCC  
RESET Output Voltage (ADM824, ADM825)  
0.4  
0.3  
0.8 × VCC  
Rev. D | Page 3 of 12  
 
ADM823/ADM824/ADM825  
Data Sheet  
Parameter  
Min  
Typ  
Max  
Unit  
Test Conditions/Comments  
WATCHDOG INPUT (ADM823, ADM824)  
Watchdog Timeout Period  
WDI Pulse Width  
WDI Input Threshold, VIL  
WDI Input Current  
1.12  
50  
0.7 × VCC  
1.6  
2.40  
sec  
ns  
V
µA  
µA  
VIL = 0.4 V, VIH = 0.8 × VCC  
0.3 × VCC  
160  
120  
−15  
VWDI = VCC, time average  
VWDI = 0 V, time average  
−20  
MANUAL RESET INPUT (ADM823, ADM825)  
MR Input Threshold  
0.7 × VCC  
1
0.3 × VCC  
75  
V
MR Input Pulse Width  
µs  
ns  
kΩ  
ns  
MR Glitch Rejection  
100  
52  
MR Pull-Up Resistance  
MR to Reset Delay  
35  
500  
Rev. D | Page 4 of 12  
Data Sheet  
ADM823/ADM824/ADM825  
ABSOLUTE MAXIMUM RATINGS  
TA = 25°C, unless otherwise noted.  
Stresses above those listed under Absolute Maximum Ratings  
may cause permanent damage to the device. This is a stress  
rating only and functional operation of the device at these or  
any other conditions above those indicated in the operational  
section of this specification is not implied. Exposure to absolute  
maximum rating conditions for extended periods may affect  
device reliability.  
Table 3.  
Parameter  
Rating  
VCC  
−0.3 V to +6 V  
20 mA  
Output Current (RESET, RESET)  
All Other Pins  
Operating Temperature Range  
Storage Temperature Range  
θJA Thermal Impedance  
SC70  
−0.3 V to (VCC + 0.3 V)  
−40°C to +125°C  
−65°C to +150°C  
ESD CAUTION  
146°C/W  
270°C/W  
SOT-23  
Lead Temperature  
Soldering (10 sec)  
Vapor Phase (60 sec)  
Infrared (15 sec)  
300°C  
215°C  
220°C  
Rev. D | Page 5 of 12  
 
 
ADM823/ADM824/ADM825  
Data Sheet  
PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS  
RESET  
GND  
MR  
1
2
3
5
V
RESET  
GND  
1
2
3
5
V
RESET  
GND  
1
2
3
5
V
CC  
CC  
CC  
ADM823  
ADM824  
ADM825  
TOP VIEW  
TOP VIEW  
TOP VIEW  
(Not to Scale)  
(Not to Scale)  
(Not to Scale)  
4
WDI  
RESET  
4
WDI  
RESET  
4
MR  
Figure 2. ADM823 Pin Configuration  
Figure 3. ADM824 Pin Configuration  
Figure 4. ADM825 Pin Configuration  
Table 4. Pin Function Descriptions  
Pin No.  
Mnemonic  
Description  
1
Active Low, Push-Pull Reset Output. Asserted whenever VCC is below the reset threshold, VTH  
.
RESET  
2
3
GND  
MR (ADM823)  
Ground.  
Manual Reset Input. This is an active low input which, when forced low for at least 1 µs, generates  
a reset. It features a 52 kΩ internal pull-up.  
RESET (ADM824/ADM825)  
WDI (ADM823/ADM824)  
Active High, Push-Pull Reset Output.  
4
5
Watchdog Input. Generates a reset if the voltage on the pin remains low or high for the duration  
of the watchdog timeout. The timer is cleared if a logic transition occurs on this pin or if a reset is  
generated.  
Manual Reset Input. This is an active low input which, when forced low for at least 1 µs, generates  
a reset. It features a 52 kΩ internal pull-up.  
MR (ADM825)  
VCC  
Power Supply Voltage Being Monitored.  
Rev. D | Page 6 of 12  
 
Data Sheet  
ADM823/ADM824/ADM825  
TYPICAL PERFORMANCE CHARACTERISTICS  
10.0  
9.5  
9.0  
8.5  
100  
90  
80  
70  
60  
50  
40  
30  
20  
10  
0
ADM823L  
8.0  
7.5  
7.0  
6.5  
6.0  
ADM824Y  
5.5  
5.0  
4.5  
4.0  
3.5  
ADM825R  
40  
–40  
–20  
0
20  
60  
80  
100  
120  
–40  
–20  
0
20  
40  
60  
80  
100  
120  
TEMPERATURE (°C)  
TEMPERATURE (°C)  
Figure 5. Supply Current vs. Temperature  
Figure 8. Reset Comparator Propagation Delay vs. Temperature (VCC Falling)  
80  
75  
70  
65  
60  
55  
50  
45  
40  
35  
30  
25  
20  
15  
10  
5
340  
320  
300  
280  
260  
240  
220  
200  
180  
160  
140  
120  
100  
0
–40  
–20  
0
20  
40  
60  
80  
100  
120  
0
0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5  
(V)  
TEMPERATURE (°C)  
V
CC  
Figure 6. Supply Current vs. Supply Voltage  
Figure 9. Manual Reset to Reset Propagation Delay vs. Temperature  
(ADM823/ADM825)  
1.05  
1.04  
1.03  
1.02  
1.01  
1.00  
0.99  
0.98  
0.97  
0.96  
0.95  
250  
240  
230  
220  
210  
200  
190  
180  
170  
–40  
–20  
0
20  
40  
60  
80  
100  
120  
–40  
–20  
0
20  
40  
60  
80  
100  
120  
TEMPERATURE (°C)  
TEMPERATURE (°C)  
Figure 7. Normalized Reset Threshold vs. Temperature  
Figure 10. Reset Timeout Period vs. Temperature  
Rev. D | Page 7 of 12  
 
ADM823/ADM824/ADM825  
Data Sheet  
2.0  
1.8  
1.6  
1.4  
1.2  
1.0  
0.8  
0.6  
0.4  
0.2  
0
190  
180  
170  
160  
150  
140  
130  
120  
110  
100  
–40  
–20  
0
20  
40  
60  
80  
100  
120  
–50  
0
50  
100  
TEMPERATURE (°C)  
TEMPERATURE (°C)  
Figure 11. Watchdog Timeout Period vs. Temperature  
(ADM823/ADM824)  
Figure 13. Manual Reset Minimum Pulse Width vs. Temperature  
(ADM823/ADM825)  
160  
140  
120  
100  
80  
3.8  
3.6  
RESET OCCURS ABOVE GRAPH  
3.4  
NEGATIVE PULSE  
3.2  
3.0  
2.8  
2.6  
V
= 4.63V  
TH  
60  
40  
POSITIVE PULSE  
2.4  
2.2  
2.0  
20  
V
= 2.93V  
TH  
0
10  
100  
1000  
–40  
10  
60  
110  
160  
OVERDRIVE VOD (mV)  
TEMPERATURE (°C)  
Figure 12. Maximum VCC Transient Duration vs. Reset Threshold Overdrive  
Figure 14. Watchdog Input Minimum Pulse Width vs. Temperature  
(ADM823/ADM824)  
Rev. D | Page 8 of 12  
 
Data Sheet  
ADM823/ADM824/ADM825  
CIRCUIT DESCRIPTION  
MANUAL RESET INPUT  
The ADM823/ADM824/ADM825 provide microprocessor  
supply voltage supervision by controlling the reset input of the  
microprocessor. Code execution errors are avoided during  
power-up, power-down, and brownout conditions by asserting a  
reset signal when the supply voltage is below a preset threshold.  
Errors are also avoided by allowing supply voltage stabilization  
with a fixed timeout reset pulse after the supply voltage rises  
above the threshold. In addition, problems with microprocessor  
code execution can be monitored and corrected with a watchdog  
timer (ADM823/ADM824). By including watchdog strobe  
instructions in microprocessor code, a watchdog timer can  
detect whether the microprocessor code breaks down or becomes  
stuck in an infinite loop. If this happens, the watchdog timer  
asserts a reset pulse that restarts the microprocessor in a known  
state. If the user detects a problem with the systems operation, a  
manual reset input is available (ADM823/ADM825) to reset the  
microprocessor with an external push-button, for example.  
MR  
The ADM823/ADM825 feature a manual reset input (  
)
MR  
which, when driven low, asserts the reset output. When  
transitions from low to high, reset remains asserted for the  
duration of the reset active timeout period before deasserting.  
MR  
The  
always high when unconnected. An external push-button  
MR  
input has a 52 kΩ internal pull-up so that the input is  
switch can be connected between  
user can generate a reset. Debounce circuitry for this purpose is  
MR  
and ground so that the  
integrated on chip. Noise immunity is provided on the  
input and fast, negative-going transients of up to 100 ns (typical)  
MR  
are ignored. A 0.1 µF capacitor between  
provides additional noise immunity.  
and ground  
WATCHDOG INPUT  
The ADM823/ADM824 feature a watchdog timer that monitors  
microprocessor activity. A timer circuit is cleared with every  
low-to-high or high-to-low logic transition on the watchdog  
input pin (WDI), which detects pulses as short as 50 ns. If the  
timer counts through the preset watchdog timeout period (tWD),  
reset is asserted. The microprocessor is required to toggle the  
WDI pin to avoid being reset. Failure of the microprocessor to  
toggle WDI within the timeout period, therefore, indicates a  
code execution error, and the reset pulse generated restarts the  
microprocessor in a known state.  
RESET OUTPUT  
The ADM823 features an active low, push-pull reset output, and  
the ADM824/ADM825 feature dual active low and active high  
push-pull reset outputs. For active low and active high outputs,  
the reset signal is guaranteed to be logic low and logic high,  
respectively, for VCC ≥ 1 V.  
The reset output is asserted when VCC is below the reset  
MR  
threshold (VTH), when  
is driven low, or when WDI is not  
In addition to logic transitions on WDI, the watchdog timer is  
also cleared by a reset assertion due to an undervoltage condi-  
serviced within the watchdog timeout period (tWD). Reset  
remains asserted for the duration of the reset active timeout  
MR  
tion on VCC or by  
being pulled low. When reset is asserted,  
MR  
period (tRP) after VCC rises above the reset threshold, after  
transitions from low to high, or after the watchdog timer times  
out. Figure 15 illustrates the behavior of the reset outputs.  
the watchdog timer is cleared and does not begin counting again  
until reset is deasserted. The watchdog timer can be disabled by  
leaving WDI floating or by three-stating the WDI driver.  
V
CC  
V
V
TH  
TH  
V
V
CC  
V
TH  
CC  
V
CC  
1V  
0V  
1V  
0V  
V
CC  
V
CC  
RESET  
WDI  
RESET  
RESET  
tRP  
tRP  
tWD  
tRP  
tRD  
0V  
0V  
V
CC  
V
CC  
tRP  
1V  
0V  
0V  
tRD  
Figure 16. Watchdog Timing Diagram  
Figure 15. Reset Timing Diagram  
Rev. D | Page 9 of 12  
 
 
 
 
 
ADM823/ADM824/ADM825  
Data Sheet  
APPLICATIONS INFORMATION  
WATCHDOG INPUT CURRENT  
WATCHDOG SOFTWARE CONSIDERATIONS  
To minimize the watchdog input current (and minimize overall  
power consumption), leave WDI low for the majority of the  
watchdog timeout period. When driven high, WDI can draw as  
much as 160 µA. Pulsing WDI low-high-low at a low duty cycle  
reduces the effect of the large input current. When WDI is  
unconnected, a window comparator disconnects the watchdog  
timer from the reset output circuitry so that reset is not asserted  
when the watchdog timer times out.  
In implementing the microprocessor watchdog strobe code,  
quickly switching WDI low-to-high and then high-to-low  
(minimizing WDI high time) is desirable for current consumption  
reasons. However, a more effective way of using the watchdog  
function can be considered.  
A low-high-low WDI pulse within a given subroutine prevents  
the watchdog timing out. However, if the subroutine becomes  
stuck in an infinite loop, the watchdog cannot detect this cond-  
ition because the subroutine continues to toggle WDI. A more  
effective coding scheme for detecting this error involves using a  
slightly longer watchdog timeout. In the program that calls the  
subroutine, WDI is set high (see Figure 18). The subroutine sets  
WDI low when it is called. If the program executes without error,  
WDI is toggled high and low with every loop of the program.  
If the subroutine enters an infinite loop, WDI is kept low, the  
watchdog times out, and the microprocessor is reset.  
NEGATIVE-GOING VCC TRANSIENTS  
To avoid unnecessary resets caused by fast power supply  
transients, the ADM823/ADM824/ADM825 are equipped with  
glitch rejection circuitry. The typical performance characteristic  
in Figure 12 plots VCC transient duration vs. the transient mag-  
nitude. The curves show combinations of transient magnitude  
and duration for which a reset is not generated for 4.63 V and  
2.93 V reset threshold parts. For example, with the 2.93 V  
threshold, a transient that goes 100 mV below the threshold and  
lasts 8 µs typically does not cause a reset, but if the transient is  
any larger in magnitude or duration, a reset is generated. An  
optional 0.1 µF bypass capacitor mounted close to VCC provides  
additional glitch rejection.  
START  
SET WDI  
HIGH  
RESET  
ENSURING RESET VALID TO VCC = 0 V  
PROGRAM  
CODE  
Both active low and active high reset outputs are guaranteed to  
be valid for VCC as low as 1 V. However, by using an external  
resistor with push-pull configured reset outputs, valid outputs  
for VCC as low as 0 V are possible. For an active low reset output,  
INFINITE LOOP:  
WATCHDOG  
TIMES OUT  
SUBROUTINE  
a resistor connected between  
and ground pulls the output  
RESET  
SET WDI  
LOW  
low when it is unable to sink current. For an active high reset  
output, a resistor connected between RESET and VCC pulls the  
output high when it is unable to source current. A large resist-  
ance such as 100 kΩ should be used so that the reset output is  
not overloaded when VCC is above 1 V.  
RETURN  
Figure 18. Watchdog Flow Diagram  
V
CC  
V
V
CC  
CC  
100kΩ  
ADM823/  
ADM824/  
ADM825  
RESET  
RESET  
RESET  
ADM824/  
ADM825  
ADM823  
MICROPROCESSOR  
I/O  
RESET  
100kΩ  
MR  
WDI  
Figure 17. Ensuring Reset Valid to VCC = 0 V  
Figure 19. Typical Application Circuit  
Rev. D | Page 10 of 12  
 
 
 
 
 
 
Data Sheet  
ADM823/ADM824/ADM825  
OUTLINE DIMENSIONS  
2.20  
2.00  
1.80  
2.40  
2.10  
1.80  
5
1
4
3
1.35  
1.25  
1.15  
2
0.65 BSC  
1.10  
1.00  
0.90  
0.70  
0.40  
0.10  
0.80  
0.46  
0.36  
0.26  
0.22  
0.08  
SEATING  
PLANE  
0.10 MAX  
0.30  
0.15  
COPLANARITY  
0.10  
COMPLIANT TO JEDEC STANDARDS MO-203-AA  
Figure 20. 5-Lead Thin Shrink Small Outline Transistor Package [SC70]  
(KS-5)  
Dimensions shown in millimeters  
3.00  
2.90  
2.80  
5
1
4
3
3.00  
2.80  
2.60  
1.70  
1.60  
1.50  
2
0.95 BSC  
1.90  
BSC  
1.30  
1.15  
0.90  
0.20 MAX  
0.08 MIN  
1.45 MAX  
0.95 MIN  
0.55  
0.45  
0.35  
0.15 MAX  
0.05 MIN  
10°  
5°  
0°  
SEATING  
PLANE  
0.60  
BSC  
0.50 MAX  
0.35 MIN  
COMPLIANT TO JEDEC STANDARDS MO-178-AA  
Figure 21. 5-Lead Small Outline Transistor Package [SOT-23]  
(RJ-5)  
Dimensions shown in millimeters  
ORDERING GUIDE  
Model 1  
Reset Threshold (V)  
Temperature Range  
−40°C to +125°C  
−40°C to +125°C  
−40°C to +125°C  
−40°C to +125°C  
−40°C to +125°C  
−40°C to +125°C  
−40°C to +125°C  
−40°C to +125°C  
−40°C to +125°C  
−40°C to +125°C  
−40°C to +125°C  
Quantity Package Description Package Option Branding  
ADM823LYKSZ-R7  
ADM823LYRJ-R7  
ADM823LYRJZ-R7  
ADM823MYKSZ-R7  
ADM823MYRJZ-R7  
ADM823TYKSZ-R7  
ADM823TYRJ-R7  
ADM823TYRJZ-R7  
ADM823SYKSZ-R7  
ADM823SYRJ-R7  
ADM823SYRJZ-R7  
4.63  
4.63  
4.63  
4.38  
4.38  
3.08  
3.08  
3.08  
2.93  
2.93  
2.93  
3k  
3k  
3k  
3k  
3k  
3k  
3k  
3k  
3k  
3k  
3k  
5-Lead SC70  
KS-5  
RJ-5  
RJ-5  
KS-5  
RJ-5  
KS-5  
RJ-5  
RJ-5  
KS-5  
RJ-5  
RJ-5  
M4L  
N07  
M4L  
M4L  
M4L  
M4L  
N07  
M4L  
M4L  
N07  
M4L  
5-Lead SOT-23  
5-Lead SOT-23  
5-Lead SC70  
5-Lead SOT-23  
5-Lead SC70  
5-Lead SOT-23  
5-Lead SOT-23  
5-Lead SC70  
5-Lead SOT-23  
5-Lead SOT-23  
Rev. D | Page 11 of 12  
 
 
ADM823/ADM824/ADM825  
Data Sheet  
Model 1  
Reset Threshold (V)  
Temperature Range  
−40°C to +125°C  
−40°C to +125°C  
−40°C to +125°C  
−40°C to +125°C  
−40°C to +125°C  
−40°C to +125°C  
−40°C to +125°C  
−40°C to +125°C  
−40°C to +125°C  
−40°C to +125°C  
−40°C to +125°C  
−40°C to +125°C  
−40°C to +125°C  
−40°C to +125°C  
−40°C to +125°C  
−40°C to +125°C  
−40°C to +125°C  
−40°C to +125°C  
−40°C to +125°C  
Quantity Package Description Package Option Branding  
ADM823RYRJZ-R7  
ADM823ZYKSZ-R7  
ADM823YYKSZ-R7  
2.63  
2.32  
2.19  
3k  
3k  
3k  
3k  
3k  
3k  
3k  
3k  
3k  
3k  
3k  
3k  
3k  
3k  
3k  
3k  
3k  
3k  
3k  
5-Lead SOT-23  
5-Lead SC70  
5-Lead SC70  
RJ-5  
KS-5  
KS-5  
RJ-5  
KS-5  
KS-5  
RJ-5  
RJ-5  
RJ-5  
RJ-5  
KS-5  
RJ-5  
RJ-5  
KS-5  
RJ-5  
RJ-5  
RJ-5  
RJ-5  
KS-5  
M4L  
M4L  
M4L  
L9M  
M8G  
M8G  
M8G  
N09  
M8H  
N09  
M8H  
N09  
M8H  
M8H  
N09  
M8H  
N09  
ADM824LYRJZ-REEL7 4.63  
5-Lead SOT-23  
5-Lead SC70  
5-Lead SC70  
ADM824SYKSZ-REEL7  
ADM824RYKSZ-REEL7  
ADM824SYRJZ-REEL7  
ADM825LYRJ-R7  
2.93  
2.63  
2.93  
4.63  
4.63  
4.38  
3.08  
3.08  
3.08  
2.93  
2.93  
2.93  
2.63  
2.63  
2.32  
5-Lead SOT-23  
5-Lead SOT-23  
5-Lead SOT-23  
5-Lead SOT-23  
5-Lead SC70  
5-Lead SOT-23  
5-Lead SOT-23  
5-Lead SC70  
5-Lead SOT-23  
5-Lead SOT-23  
5-Lead SOT-23  
5-Lead SOT-23  
5-Lead SC70  
ADM825LYRJZ-R7  
ADM825MYRJ-R7  
ADM825TYKSZ-R7  
ADM825TYRJ-R7  
ADM825TYRJZ-R7  
ADM825SYKSZ-R7  
ADM825SYRJ-R7  
ADM825SYRJZ-R7  
ADM825RYRJ-R7  
ADM825RYRJZ-R7  
ADM825ZYKSZ-R7  
M8H  
M8H  
1 Z = RoHS Compliant Part.  
©2004–2013 Analog Devices, Inc. All rights reserved. Trademarks and  
registered trademarks are the property of their respective owners.  
D04534-0-7/13(D)  
Rev. D | Page 12 of 12  
 

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