SP730EK-4-375-L [SIPEX]
暂无描述;型号: | SP730EK-4-375-L |
厂家: | SIPEX CORPORATION |
描述: | 暂无描述 微处理器 监控 |
文件: | 总7页 (文件大小:612K) |
中文: | 中文翻译 | 下载: | 下载PDF数据表文档文件 |
SP730
Microprocessor Supervisory Circuit with Pull Up Resistor
GND
FEATURES
■ Holds Microcontroller in Reset
■ Reset Microcontroller during power loss
■ 4.375 and 3.075 Voltage Trip Points
■ Active Low RESET Pin
SP730
3 Pin SOT-23
V
DD
RESET
Now Available in Lead Free Packaging
■ Internal Pull-up Resistor
■ Holds RESET for 350ms (typical)
■ RESET valid down to VDD1.0V
■ 45µA Typical Operating Current
■ Offered in a 3 Pin SOT-23 Package
APPLICATIONS
■ Portable Electronic Devices
■ Electrical Power Meter
■ Computer System Board
■ Modem
DESCRIPTION
The SP730 is a voltage supervisory device designed to keep a microcontroller in reset until the
system voltage has reached the proper level and stabilized. It also operates as protection from
brown-out conditions when the supply voltage drops below a safe operating level. The SP730
has an internal 5kΩ pull-up resistor. The device has an active low RESET pin and will assert
the RESET signal whenever the voltage on the V pin is below the trip-point voltage. The part
is available in a small 3 pin SOT-23 package. CoDnDtact factory for other trip voltage options.
TYPICAL APPLICATION CIRCUIT
V
DD
Microcontroller
V
SP730
DD
Bypass
V
DD
Capacitor
GND
MCLR
or
RESET
RESET
GND
Date: 11/15/05
SP730 Microprocessor Supervisory Circuit
© Copyright 2005 Sipex Corporation
1
ABSOLUTE MAXIMUM RATINGS
V
................................................................................................. 6.0V
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.
AlDlDinputs and outputs w.r.t. GND ............................... -0.6 to VDD+ 1.0V
Storage Temperature .................................................. -65°C to +150°C
Ambient Temperature with power applied.....................-65°C to +125°C
ESD Protection on all pins ............................................................ ≥2kV
ELECTRICAL CHARACTERISTICS
VDD = 1.0V - 5.5V ; -40°C to 85°C. The ♦ denotes the specifications which apply over the full operating temperature range,
unless otherwise specified.
Parameter
Operating Voltage Range
VDD Value to RESET
Operating Current
Symbol
VDD
Min.
1.0
Typ.
Max.
Units
V
Conditions
♦
♦
♦
♦
♦
♦
5.5
VDDMIN
IDD
1.0
V
45
3.075
4.375
50
60
µA
VDD = 5.5V (no load)
3.0
3.15
4.50
VDD Trip Point
VTRIP
V
4.25
Threshold Hysteresis
VHYS
VOL
mV
V
RESET Low Level Output
Voltage
I
OL = 8.5mA, VDD
=
♦
♦
0.6
VTRIP MIN
RESET High Level Output
Voltage
I
OH = 50µA, VDD >
VOH
VDD-.7
150
V
VTRIP
MAX
♦
♦
Pull up Resistor
5
KΩ
ms
VDD Detect to RESET Inactive
tRPU
350
700
V
DD ramped from
VTRIP MAX (V
250mV) toT(RVIPTMRAIPXM+IN -
♦
VDD Detect to RESET
tRPD
10
µS
250mV)
PIN DESCRIPTION
PIN NUMBER
PIN NAME
3 PIN SOT-23 DESCRIPTION
1
RESET
Active Low. This pin goes low whenever VDD falls below the reset
threshold.
2
3
VDD
Supply input.
Ground.
GND
Date: 11/15/05
SP730 Microprocessor Supervisory Circuit
© Copyright 2005 Sipex Corporation
2
FUNCTIONAL DIAGRAM
VDD
5kΩ Internal pull
up resistor
Comparator
Delay Circuit
Output Driver
RESET
Bandgap
Reference
TIMING DIAGRAM
V
TRIP
V
DD
tRPU
tRPD
V
OH
RESET
V
OH
Figure 1: SP730 Timing Diagram
Date: 11/15/05
SP730 Microprocessor Supervisory Circuit
© Copyright 2005 Sipex Corporation
3
TYPICAL PERFORMANCE CHARACTERISTICS
Idd vs Temperature
60
50
40
30
20
10
0
Idd
-40
-20
0
20
40
60
80
100
Temperature ('C)
tRPU vs Temperature
700
600
500
400
300
200
100
tRPU
-40
-20
0
20
40
60
80
100
Temperature ('C)
Date: 11/15/05
SP730 Microprocessor Supervisory Circuit
© Copyright 2005 Sipex Corporation
4
TYPICAL PERFORMANCE CHARACTERISTICS
Normalized VTRIP vs Temperature
1.0020
1.0000
0.9980
0.9960
0.9940
0.9920
0.9900
-40
-20
0
20
40
60
80
100
Temperature ('C)
VOL vs IOL
1200
1100
1000
900
800
700
600
500
400
Vdd=4.25V
Vdd=3.5V
Vdd=2.5V
300
200
100
0
Temp = 25'C
0
1
2
3.2
4
5
6
7
8.5
9
10
IOL (mA)
11
12
13
14
15
16
17
18
19
20
Date: 11/15/05
SP730 Microprocessor Supervisory Circuit
© Copyright 2005 Sipex Corporation
5
3 PIN SOT-23
D
b
SIDE VIEW
3
A2
A
E
E1
Seating
Plane
A1
(L1)
1
2
e
e1
TOP VIEW
FRONT VIEW
Gauge Plane
L2
c
Seating
Plane
ø
L
3 Pin SOT-23
JEDEC TO-236
Variation AB
Dimensions in Inches
Conversion Factor:
1 Inch = 25.40 mm
Dimensions in Millimeters:
Controlling Dimension
SYMBOL
MIN
0.30
0.08
2.80
2.10
1.20
NOM
-
MAX
0.50
0.20
3.04
2.64
1.40
MIN
NOM
-
-
0.114
-
MAX
0.012
0.003
0.110
0.083
0.047
0.020
0.008
0.120
0.104
0.055
b
c
-
D
2.90
E
-
1.30
0.051
E1
e
0.95 BSC
1.90 BSC
0.50
0.038 BSC
e1
L
0.075 BSC
0.020
0.016
0.024
0.40
0.60
L1
L2
Ø
0.54 REF
0.25 BSC
-
0.021 REF
0.010 BSC
-
0º
8º
0º
8º
0.035
0.000
0.035
-
-
0.044
0.004
0.040
A
0.89
0.01
0.88
-
1.12
0.10
1.02
A1
A2
-
0.037
0.95
SIPEX Pkg Signoff Date/Rev:
JL Oct25-05 / Rev A
Date: 11/15/05
SP730 Microprocessor Supervisory Circuit
© Copyright 2005 Sipex Corporation
6
ORDERING INFORMATION
Vout Package
Part number
Top Mark
Temperature
SP730EK-4-375...............V3WW................-40°-85°................4.375V...........3 Pin SOT-23
SP730EK-4-375/TR.........V3WW................-40°-85°................4.375V...........3 Pin SOT-23
SP730EK-3-075...............M4WW................-40°-85°...............3.075V...........3 Pin SOT-23
SP730EK-3-075/TR.........M4WW................-40°-85°................3.075V...........3 Pin SOT-23
Contact factory for other trip voltage options.
Available in lead free packaging. To order add "-L" suffix to part number.
Example: SP730EK-4-375/TR = standard; SP730EK-L-4-375/TR = lead free
/TR = Tape and Reel
Pack quantity is 2500 for SOT-23.
Sipex Corporation
Headquarters and
Sales Office
233 South Hillview Drive
Milpitas, CA 95035
TEL: (408) 934-7500
Solved By SipexTM
FAX: (408) 935-7600
Date: 11/15/05
SP730 Microprocessor Supervisory Circuit
© Copyright 2005 Sipex Corporation
7
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