SP809EK-2.9-L [SIPEX]
Power Supply Support Circuit, Fixed, 1 Channel, PDSO3, LEAD FREE, SOT-23, 3 PIN;
| 型号： | SP809EK-2.9-L |
| 厂家： | 
SIPEX CORPORATION |
| 描述： | Power Supply Support Circuit, Fixed, 1 Channel, PDSO3, LEAD FREE, SOT-23, 3 PIN 光电二极管 |
| 文件： | 总8页 (文件大小：99K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
®
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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