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产品型号SP810EK-2.6-L的Datasheet PDF文件预览

®
SP809 / SP810  
3 Pin Microprocessor Supervisor Circuit  
V
CC  
FEATURES  
Ultra Low Supply Current 1µA (typ.)  
Guaranteed Reset valid to VCC = 0.9V  
140 ms Min. Power-On Reset Pulse Width  
SP809  
3 Pin SOT-23  
Internally Fixed Threshold 2.3V, 2.6V, 2.9V,  
3.1V, 4.0V, 4.4V, 4.6V  
GND  
RESET  
Tight Voltage Threshold Tolerance: 1.5%  
Offered in a 3 Pin SOT-23 Package  
Now Available in Lead Free Packaging  
APPLICATIONS  
Portable Electronic Devices  
Electrical Power Meter  
Digital Still Camera  
µP Power Monitoring  
Part Number  
SP809N  
SP809  
Output Type  
Open-Drain Active Low  
Push-Pull Active Low  
Push-Pull Active High  
SP810  
DESCRIPTION  
The SP809/SP810 are low power microprocessor (µP) supervisory circuits used to monitor  
power supplies in µP and digital systems. They provide applications with benefits of circuit  
reliability and low cost by eliminating external components. If the VCC supply voltage falls below  
preset threshold then a reset signal is asserted for at least 140ms after VCC has risen above the  
reset threshold. Both the SP809 and SP810 were designed with a reset comparator to help  
identifyinvalidsignals, whichlastlessthan140ms. Theonlydifferencebetweenthemisthatthey  
have an active-low RESET output and active-high RESET output, respectively. Low supply  
current (1µA) makes SP809/SP810 ideal for portable equipment. The devices are available in  
3 pin SOT-23 package.  
TYPICAL APPLICATION CIRCUIT  
V
CC  
V
V
CC  
CC  
µP  
RESET  
RESET  
(RESET)  
GND  
GND  
Push-Pull output  
Date: 11/9/04  
SP809/810, 3 Pin Microprocessor Supervisor Circuit  
© Copyright 2004 Sipex Corporation  
1
ABSOLUTE MAXIMUM RATINGS  
Storage Temperature .................................................. -65°C to +150°C  
Lead Temperature (soldering 10 sec)............................................125°C  
VCC .................................................................................... -0.3V to 6.5V  
RESET, RESET ......................................................... -0.3 to VCC+ 0.3V  
Input Current (VCC) ....................................................................... 20mA  
Output Current (RESET, RESET).................................................. 20mA  
Continuous Power Dissipation (TA = +70ºC) ............................. 320mW  
Operating Junction Temperature ................................... -40°C to +85°C  
Junction Temperature.....................................................................125°C  
These are stress ratings only and functional operation of the device at  
these ratings or any other above those indicated in the operation sections  
of the specifications below is not implied. Exposure to absolute maximum  
rating conditions for extended periods of time may affect reliability.  
ELECTRICAL CHARACTERISTICS  
Typical values are at TA = 25°C, unless otherwise specified. (Note 1)  
Parameter  
Operating Voltage Range  
Supply Current  
Symbol  
VCC  
Min.  
Typ.  
Max. Units  
Conditions  
0.9  
6.0  
3.0  
V
ICC  
1.0  
2.3  
µA  
VCC = VTH + 0.1V  
2.265  
2.254  
2.561  
2.548  
2.857  
2.842  
3.054  
3.038  
3.940  
3.920  
4.334  
4.312  
4.531  
4.508  
2.335  
TA = +25ºC  
SP809-23  
SP809-26  
SP809-29  
SP809-31  
SP809-40  
SP809-44  
SP809-46  
2.346  
2.639  
2.652  
2.944  
2.958  
3.147  
3.162  
4.060  
4.080  
4.466  
4.488  
4.669  
4.692  
TA = -40ºC to + 85ºC  
TA = +25ºC  
2.6  
2.9  
3.1  
4.0  
4.4  
4.6  
TA = -40ºC to + 85ºC  
TA = +25ºC  
TA = -40ºC to + 85ºC  
TA = +25ºC  
Reset Threshold  
VTH  
V
TA = -40ºC to + 85ºC  
TA = +25ºC  
TA = -40ºC to + 85ºC  
TA = +25ºC  
TA = -40ºC to + 85ºC  
TA = +25ºC  
TA = -40ºC to + 85ºC  
VCC Reset Delay  
VTRIP  
20  
µS  
ms  
VCC = VTH to (VTH - 0.1V), VTH = 3.1V  
140  
100  
230  
560  
TA = +25ºC  
Reset Active Timeout  
Period  
TRP  
VCC = VTH(MAX)  
1030  
TA = -40ºC to + 85ºC  
VOL  
VOH  
VOL  
VOH  
0.8VCC  
VCC = VTH + 0.1V, ISOURCE = 1mA  
VCC = VTH - 0.1V, ISINK = 1mA  
RESET Output Voltage  
V
V
0.2VCC  
0.2VCC  
0.8VCC  
VCC = VTH + 0.1V, ISOURCE = 1mA  
RESET Output Voltage  
VCC = VTH - 0.1V, ISINK = 1mA  
Date: 11/9/04  
SP809/810, 3 Pin Microprocessor Supervisor Circuit  
© Copyright 2004 Sipex Corporation  
2
ELECTRICAL CHARACTERISTICS  
Note 1. Specifications are production tested at TA = 25°C. Specifications over the -40°C to 85°C operating  
temperature range are assured by design, characterization and correlation with Statistical Quality Controls  
Note 2. RESET output is for SP809; RESET output is for SP810.  
BLOCK DIAGRAMS  
V
CC  
R1  
Reset  
Bandgap  
NMOS  
Reset Generator  
R2  
GND  
N-ch Open-Drain Type  
V
CC  
R1  
Bandgap  
Reset Generator  
Reset  
(Reset)  
R2  
GND  
Push-Pull Type  
TEST CIRCUIT  
SP809  
RESET  
V
CC  
GND  
Date: 11/9/04  
SP809/810, 3 Pin Microprocessor Supervisor Circuit  
© Copyright 2004 Sipex Corporation  
3
TYPICAL PERFORMANCE CHARACTERISTICS  
1.5  
1.4  
1.3  
1.2  
1.1  
1.0  
0.9  
0.8  
0.7  
0.6  
0.5  
120  
110  
V
TH = 2.3V  
VOD = VTH - VCC  
100  
90  
80  
70  
60  
50  
40  
30  
20  
10  
0
VTH = 2.3V  
VOD = 50mV  
VTH = 3.1V  
VTH = 4.6V  
VOD = 100mV  
VOD = 200mV  
-60  
-40  
-20  
0
20  
40  
60  
80  
100  
-40  
-20  
0
20  
40  
60  
80  
100  
Temperature (°C)  
Temperature (ºC)  
Figure 1. Supply Current vs. Temperature  
Figure 2. Power-Down Reset Delay vs. Temperature  
240  
400  
VTH = 3.1V  
VOD = VTH - VCC  
V
TH = 4.6V  
VOD = V  
220  
200  
180  
160  
140  
120  
100  
80  
TH - VCC  
VOD = 50mV  
VOD = 50mV  
300  
200  
100  
0
VOD = 100mV  
VOD = 200mV  
VOD = 100mV  
VOD = 200mV  
60  
40  
20  
0
-60  
-40  
-20  
0
20  
40  
60  
80  
100  
-60  
-40  
-20  
0
20  
40  
60  
80  
100  
Temperature (ºC)  
Temperature (°C)  
Figure 4. Power-Down Reset Delay vs. Temperature  
Figure 3. Power-Down Reset Delay vs. Temperature  
600  
1.015  
VTH = 4.6V  
V
500  
TH = 4.6V  
1.010  
1.005  
1.000  
0.995  
0.990  
0.985  
VTH = 3.1V  
400  
VTH = 3.1V  
VTH = 2.3V  
VTH = 2.3V  
300  
200  
100  
0
-40  
-20  
0
20  
40  
60  
80  
100  
Temperature (ºC)  
-60  
-40  
-20  
0
20  
40  
60  
80  
100  
Temperature (°C)  
Figure 6. Power-Up Reset Time-out vs. Temperature  
Figure 5. Normalized Reset Threshold vs. Temperature  
Date: 11/9/04  
SP809/810, 3 Pin Microprocessor Supervisor Circuit  
© Copyright 2004 Sipex Corporation  
4
PIN DESCRIPTION  
Pin Name  
Description  
GND  
Ground.  
Active low output pin. RESET Output remains low while VCC is below the reset  
threshold.  
RESET (SP809)  
Active high output pin. RESET Output remains high while VCC is below the reset  
threshold.  
RESET (SP810)  
VCC  
Supply Voltage  
DETAILED DESCRIPTION  
µP will be activated at a valid reset state.  
These µP supervisory circuits assert reset to  
prevent code execution errors during power-  
up, power-down, or brownout conditions.  
Benefits of Highly Accurate Reset  
Threshold  
SP809/810withspecifiedvoltageas5V±10%  
or 3V±10% are ideal for systems using a  
5V±5% or 3V±5% power supply. The reset is  
guaranteed to assert after the power supply  
falls below the minimum specified operating  
voltage range of the system ICs. The  
pretrimmedthresholdsarereducingtherange  
over which an undesirable reset may occur.  
Reset is guaranteed to be a logic low for  
VTH>V >0.9V. Once VCC exceeded the reset  
threshCoCld,aninternaltimerkeepsRESETlow  
for the reset timeout period; after this interval,  
RESET goes high.  
If a brownout condition occurs (V drops  
below the reset threshold), RESET gCoCes low.  
Any time VCC goes below the reset threshold,  
the internal timer resets to zero, and RESET  
goes low. The internal timer is activated after  
V
returns above the reset threshold, and  
RCECSET remains low for the reset timeout  
period.  
APPLICATION INFORMATION  
Negative-Going VCC Transients  
However in applications where RESET  
must be valid down to 0V, adding a pull-  
down resistor to RESET causes any  
leakage currents to flow to ground, holding  
RESET low.  
In addition to issuing a reset to the µP during  
power-up, power-down, and brownout condi-  
tions, SP809 series are relatively resistant to  
short-duration negative-going VCC transient.  
Interfacing to µP with Bidirectional  
Reset Pins  
Ensuring a Valid Reset Output Down to  
VCC= 0  
The RESET output on the SP809N is open  
drain, this device interfaces easily with µPs  
that have bidirectional reset pins. Connect-  
ing the µP supervisor's RESET output  
directly to the microcontroller's RESET pin  
with a single pull-up resistor allows either  
device to assert reset.  
When V falls below 0.9V, SP809 RESET  
output nCoClonger sinks current; it becomes  
an open circuit. In this case, high-imped-  
ance CMOS logic inputs connecting to  
RESET can drift to undetermined voltages.  
Therefore, SP809/810 with CMOS is  
perfect for most applications of VCC down to  
0.9V.  
Date: 11/9/04  
SP809/810, 3 Pin Microprocessor Supervisor Circuit  
© Copyright 2004 Sipex Corporation  
5
PACKAGE: 3 PIN SOT-23  
D
b
3
B
B
SEE VIEW C  
VIEW A-A  
E1  
E
1
2
e
Gauge Plane  
e1  
Seating Plane  
L
Ø
L1  
VIEW C  
A2  
A
Seating Plane  
C
A1  
b
SIDE VIEW  
3 Pin SOT-23  
MIN  
0.95  
0.05  
0.9  
NOM  
-
-
-
MAX  
1.45  
0.15  
1.3  
SYMBOL  
A
A1  
A2  
b
0.3  
-
0.5  
WITH PLATING  
c
D
0.08  
2.8  
-
-
0.22  
3
e
0.95 BSC  
e1  
E
E1  
L
1.90 BSC  
c
2.6  
1.5  
0.3  
-
-
-
3
1.7  
0.6  
L1  
ø
0.60 REF  
-
0º  
8º  
BASE METAL SECTION B-B  
Note: Dimensions in (mm)  
Date: 11/9/04  
SP809/810, 3 Pin Microprocessor Supervisor Circuit  
© Copyright 2004 Sipex Corporation  
6
ORDERING INFORMATION  
Part Number  
Top Mark  
Temperature Range  
Package Type  
SP809EK-2.3 .........................N4WW..................-40°C to 85°C .......................... 3 Pin SOT-23  
SP809EK-2.3/TR ...................N4WW..................-40°C to 85°C .......................... 3 Pin SOT-23  
SP809EK-2.6 ......................... P4WW..................-40°C to 85°C .......................... 3 Pin SOT-23  
SP809EK-2.6/TR ................... P4WW..................-40°C to 85°C .......................... 3 Pin SOT-23  
SP809EK-2.9 .........................Q4WW..................-40°C to 85°C .......................... 3 Pin SOT-23  
SP809EK-2.9/TR ...................Q4WW..................-40°C to 85°C .......................... 3 Pin SOT-23  
SP809EK-3.1 .........................R4WW..................-40°C to 85°C .......................... 3 Pin SOT-23  
SP809EK-3.1/TR ...................R4WW..................-40°C to 85°C .......................... 3 Pin SOT-23  
SP809EK-4.0 ......................... S4WW..................-40°C to 85°C .......................... 3 Pin SOT-23  
SP809EK-4.0/TR ................... S4WW..................-40°C to 85°C .......................... 3 Pin SOT-23  
SP809EK-4.4 ......................... T4WW..................-40°C to 85°C .......................... 3 Pin SOT-23  
SP809EK-4.4/TR ................... T4WW..................-40°C to 85°C .......................... 3 Pin SOT-23  
SP809EK-4.6 .........................U4WW..................-40°C to 85°C .......................... 3 Pin SOT-23  
SP809EK-4.6/TR ...................U4WW..................-40°C to 85°C .......................... 3 Pin SOT-23  
SP809NEK-2.3 ...................... V4WW..................-40°C to 85°C .......................... 3 Pin SOT-23  
SP809NEK-2.3/TR ................ V4WW..................-40°C to 85°C .......................... 3 Pin SOT-23  
SP809NEK-2.6 ..................... W4WW..................-40°C to 85°C.......................... 3 Pin SOT-23  
SP809NEK-2.6/TR ............... W4WW..................-40°C to 85°C.......................... 3 Pin SOT-23  
SP809NEK-2.9 ...................... X4WW..................-40°C to 85°C .......................... 3 Pin SOT-23  
SP809NEK-2.9/TR ................ X4WW..................-40°C to 85°C .......................... 3 Pin SOT-23  
SP809NEK-3.1 ...................... Y4WW..................-40°C to 85°C .......................... 3 Pin SOT-23  
SP809NEK-3.1/TR ................ Y4WW..................-40°C to 85°C .......................... 3 Pin SOT-23  
SP809NEK-4.0 ...................... A5WW..................-40°C to 85°C .......................... 3 Pin SOT-23  
SP809NEK-4.0/TR ................ A5WW..................-40°C to 85°C .......................... 3 Pin SOT-23  
SP809NEK-4.4 ...................... B5WW..................-40°C to 85°C .......................... 3 Pin SOT-23  
SP809NEK-4.4/TR ................ B5WW..................-40°C to 85°C .......................... 3 Pin SOT-23  
SP809NEK-4.6 ......................C5WW..................-40°C to 85°C .......................... 3 Pin SOT-23  
SP809NEK-4.6/TR ................C5WW..................-40°C to 85°C .......................... 3 Pin SOT-23  
Available in lead free packaging. To order add "-L" suffix to part number.  
Example: SP809EK-2.3/TR = standard; SP809EK-L-2.3/TR = lead free  
/TR = Tape and Reel  
Pack quantity is 2,500 for SOT-23.  
Corporation  
ANALOG EXCELLENCE  
Sipex Corporation  
Headquarters and  
Sales Office  
233 South Hillview Drive  
Milpitas, CA 95035  
TEL: (408) 934-7500  
FAX: (408) 935-7600  
Sipex Corporation reserves the right to make changes to any products described herein. Sipex does not assume any liability arising out of the  
application or use of any product or circuit described herein; neither does it convey any license under its patent rights nor the rights of others.  
Date: 11/9/04  
SP809/810, 3 Pin Microprocessor Supervisor Circuit  
© Copyright 2004 Sipex Corporation  
7
ORDERING INFORMATION  
Part Number  
Top Mark  
Temperature Range  
Package Type  
SP810EK-2.3 .........................D5WW..................-40°C to 85°C .......................... 3 Pin SOT-23  
SP810EK-2.3/TR ...................D5WW..................-40°C to 85°C .......................... 3 Pin SOT-23  
SP810EK-2.6 ......................... E5WW..................-40°C to 85°C .......................... 3 Pin SOT-23  
SP810EK-2.6/TR ................... E5WW..................-40°C to 85°C .......................... 3 Pin SOT-23  
SP810EK-2.9 ......................... F5WW..................-40°C to 85°C .......................... 3 Pin SOT-23  
SP810EK-2.9/TR ................... F5WW..................-40°C to 85°C .......................... 3 Pin SOT-23  
SP810EK-3.1 .........................G5WW..................-40°C to 85°C .......................... 3 Pin SOT-23  
SP810EK-3.1/TR ...................G5WW..................-40°C to 85°C .......................... 3 Pin SOT-23  
SP810EK-4.0 .........................H5WW..................-40°C to 85°C .......................... 3 Pin SOT-23  
SP810EK-4.0/TR ...................H5WW..................-40°C to 85°C .......................... 3 Pin SOT-23  
SP810EK-4.4 ......................... J5WW..................-40°C to 85°C .......................... 3 Pin SOT-23  
SP810EK-4.4/TR ................... J5WW..................-40°C to 85°C .......................... 3 Pin SOT-23  
SP810EK-4.6 ......................... K5WW..................-40°C to 85°C .......................... 3 Pin SOT-23  
SP810EK-4.6/TR ................... K5WW..................-40°C to 85°C .......................... 3 Pin SOT-23  
Available in lead free packaging. To order add "-L" suffix to part number.  
Example: SP810EK-2.3/TR = standard; SP810EK-L-2.3/TR = lead free  
/TR = Tape and Reel  
Pack quantity is 2,500 for SOT-23.  
Corporation  
ANALOG EXCELLENCE  
Sipex Corporation  
Headquarters and  
Sales Office  
233 South Hillview Drive  
Milpitas, CA 95035  
TEL: (408) 934-7500  
FAX: (408) 935-7600  
Sipex Corporation reserves the right to make changes to any products described herein. Sipex does not assume any liability arising out of the  
application or use of any product or circuit described herein; neither does it convey any license under its patent rights nor the rights of others.  
Date: 11/9/04  
SP809/810, 3 Pin Microprocessor Supervisor Circuit  
© Copyright 2004 Sipex Corporation  
8
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