SP730M-2.625 [SIPEX]
Power Supply Support Circuit, Fixed, 1 Channel, PDSO3, TO-236AB, SOT-23, 3 PIN;
| 型号： | SP730M-2.625 |
| 厂家： | 
SIPEX CORPORATION |
| 描述： | Power Supply Support Circuit, Fixed, 1 Channel, PDSO3, TO-236AB, SOT-23, 3 PIN 光电二极管 |
| 文件： | 总5页 (文件大小：83K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
®
Preliminary
SP730
Microprocessor Supervisory
Circuit with Pull Up Resistor
FEATURES
■ Holds Microcontroller in Reset
■ Reset Microcontroller during power loss
■ 4.375 Voltage Trip Point
GND
■ Active Low RESET Pin
■ Internal Pull-up Resistor
■ Holds RESET for 350ms (typical)
■ RESET to VDD =1.0V
■ 45µA Typical Operating Current
■ Offered in a 3 Pin SOT-23 Package
SP730
3 Pin SOT-23
V
RESET
DD
APPLICATIONS
■ Networking
■ Computer
■ Industrial Process Control
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. TThe SP730
has an internal 5k pull-up resistor. Both devices have active low RESET pins. The SP730 has
an active low RESET pin and will assert the RESET signal whenever the voltage on the VDD pin
is below the trip-point voltage. The part is available in a small 3 pin SOT-23 package. Contact
factory for other volatage options. Contact factory for other trip voltage options.
TYPICAL APPLICATION CIRCUIT
V
V
DD
DD
Microcontroller
V
DD
Bypass
Capacitor
®®
SP730
GND
MCLR
or
RESET
RESET
GND
Rev:A Date: 01/22/04
SP730 Microprocessor Supervisory Circuit
© Copyright 2004 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 V + 1.0V
Storage Temperature .................................................. -65°C tDoD+150°C
Ambient Temperature with power applied.....................-65°C to +125°C
ESD Protection on all pins ............................................................ ≥2kV
ELECTRICAL CHARACTERISTICS
VDD = 1.0V - 5.0V ; TAMB = -40°C to 85°C. The ♦ denotes the specifications which apply over the full operating temperature range, unless
otherwise specified.
Parameter
Symbol
VDD
Min.
1.0
Typ.
Max.
Units
V
Conditions
♦
♦
♦
♦
♦
Operating Voltage Range
5.5
V
DD Value to RESET
Operating Current
DD Trip Point
VDDMIN
IDD
1.0
V
IOH = 50µA
VDD = 5.5V (no load)
45
4.375
50
60
µA
V
V
VTRIP
VHYS
4.25
4.50
Threshold Hysteresis
mV
IOL = 8.5mA, VDD
VTRIP MIN
=
♦
♦
RESET Low Level Output Voltage
VOL
VOH
0.6
V
V
IOH = 50µA, VDD
>
RESET High Level Output Voltage
Pull up Resistor
VDD-.7
150
VTRIP
MAX
♦
♦
5
KΩ
V
DD Detect to RESET Inactive
tRUP
350
700
ms
V
ramped from
VTDRDICP MAX (V
250mV) toT(RVIPTMRAIPXM+IN -
♦
V
DD Detect to RESET
tRPD
10
250mV)
Rev:A Date: 01/22/04
SP730 Microprocessor Supervisory Circuit
© Copyright 2004 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
VOH
RESET
VOH
Figure 1: SP730 Timing Diagram
PIN DESCRIPTION
PIN NUMBER
PIN NAME
5 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
Rev:A Date: 01/22/04
SP730 Microprocessor Supervisory Circuit
© Copyright 2004 Sipex Corporation
3
3 PIN SOT-23
D
b
3
B
B
SEE VIEW C
E1
E
1
2
e
Gauge Plane
L2
e1
L
L1
VIEW C
3 PIN SOT-23
JEDEC TO-236
(AB) Variation
Dimensions in (mm)
A
MIN NOM MAX
A2
A
A
0.89
0.01
-
1.12
0.10
Seating Plane
A1
A2
b
-
C
A
A1
SIDE VIEW
b
0.88 .95 1.02
0.30
0.08
-
0.50
0.20
c
-
D
E
2.80 2.90 3.04
2.10 2.64
1.20 1.30 1.40
-
WITH PLATING
E1
L
0.30
0.45 0.60
0.54 REF
c
L1
Ø
0º
-
8º
BASE METAL
3 PIN SOT-23
Rev:A Date: 01/22/04
SP730 Microprocessor Supervisory Circuit
© Copyright 2004 Sipex Corporation
4
ORDERING INFORMATION
Package Type
Part number
SP730M-2.625 ......................................................................................... 3 Pin SOT-23
SP730M-2.925 ......................................................................................... 3 Pin SOT-23
SP730M-3.075 ......................................................................................... 3 Pin SOT-23
SP730M-4.375 ......................................................................................... 3 Pin SOT-23
SP730M-4.475 ......................................................................................... 3 Pin SOT-23
SP730M-4.625 ......................................................................................... 3 Pin SOT-23
SP730M-4.725 ......................................................................................... 3 Pin 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
Sales Office
22 Linnell Circle
Billerica, MA 01821
TEL: (978) 667-8700
FAX: (978) 670-9001
e-mail: sales@sipex.com
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.
Rev:A Date: 01/22/04
SP730 Microprocessor Supervisory Circuit
© Copyright 2004 Sipex Corporation
5
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