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SP730EK-L-3.075/TR [SIPEX]

Power Supply Management Circuit, Fixed, 1 Channel, PDSO3, LEAD FREE, TO-236AB, SOT-23, 3 PIN;
SP730EK-L-3.075/TR
型号： SP730EK-L-3.075/TR
厂家： SIPEX CORPORATION    SIPEX CORPORATION
描述：

Power Supply Management Circuit, Fixed, 1 Channel, PDSO3, LEAD FREE, TO-236AB, SOT-23, 3 PIN

光电二极管
文件： 总7页 (文件大小：95K)
中文：  中文翻译
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®
Preliminary  
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  
APPLICATIONS  
■ Holds RESET for 350ms (typical)  
■ RESET valid down to VDD1.0V  
■ 45µA Typical Operating Current  
■ Offered in a 3 Pin SOT-23 Package  
■ 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 5k pull-up resistor. The device 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 trip voltage options.  
TYPICAL APPLICATION CIRCUIT  
V
DD  
Microcontroller  
V
SP730  
DD  
Bypass  
V
DD  
Capacitor  
GND  
MCLR  
or  
RESET  
RESET  
GND  
Date: 11/29/04  
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 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  
VDD Detect to RESET Inactive  
tRPU  
350  
700  
ms  
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: 11/29/04  
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  
Date: 11/29/04  
SP730 Microprocessor Supervisory Circuit  
© Copyright 2004 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: 11/29/04  
SP730 Microprocessor Supervisory Circuit  
© Copyright 2004 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: 11/29/04  
SP730 Microprocessor Supervisory Circuit  
© Copyright 2004 Sipex Corporation  
5
3 PIN SOT-23  
D
b
3
B
B
SEE VIEW C  
E1  
E
VIEW A-A  
1
2
e
Gauge Plane  
Seating Plane  
e1  
L
Ø
L1  
VIEW C  
A
A2  
A
Seating Plane  
C
3 Pin SOT-23 JEDEC TO-236 (AB) Variation  
A
A1  
SIDE VIEW  
MIN  
0.89  
0.01  
0.88  
0.3  
NOM  
MAX  
1.12  
0.1  
1.02  
0.5  
SYMBOL  
A
A1  
A2  
b
-
-
0.95  
-
c
D
e
e1  
E
E1  
L
L1  
ø
0.08  
2.8  
-
0.2  
3.04  
b
2.9  
0.95 BSC  
1.90 BSC  
-
1.3  
0.5  
0.54 REF  
-
WITH PLATING  
0.95  
1.2  
0.4  
2.64  
1.4  
0.6  
c
0º  
8º  
Note: Dimensions in (mm)  
BASE METAL SECTION B-B  
Date: 11/29/04  
SP730 Microprocessor Supervisory Circuit  
© Copyright 2004 Sipex Corporation  
6
ORDERING INFORMATION  
Package  
Part number  
Top Mark  
Temperature  
SP730EK-4.375...............V3WW................-40°-85°..............................3 Pin SOT-23  
SP730EK-4.375/TR.........V3WW................-40°-85°..............................3 Pin SOT-23  
SP730EK-3.075...............M4WW................-40°-85°..............................3 Pin SOT-23  
SP730EK-3.075/TR.........M4WW................-40°-85°..............................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.  
CLICK HERE TO ORDER SAMPLES  
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: 11/29/04  
SP730 Microprocessor Supervisory Circuit  
© Copyright 2004 Sipex Corporation  
7

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