ILC809RU [FAIRCHILD]
Power Supply Support Circuit, Fixed, 1 Channel, +2.63VV, CMOS, PDSO3, SOT-23, 3 PIN;
| 型号： | ILC809RU |
| 厂家： | 
FAIRCHILD SEMICONDUCTOR |
| 描述： | Power Supply Support Circuit, Fixed, 1 Channel, +2.63VV, CMOS, PDSO3, SOT-23, 3 PIN 光电二极管 |
| 文件： | 总5页 (文件大小：80K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Impala Linear Corporation
Preliminary
ILC803/ILC809/ILC810
3-Pin µP Voltage Monitor
Package Features
General Description
The ILC803, ILC809 and ILC810 are low cost microproces-
sor supervisory circuits that assert a reset if the power sup-
ply drops below a designated threshold. Several different
reset thresholds are available to accommodate systems
operating at 3V, 3.3V or 5V.
•
Precision Voltage Monitor for 3V, 3.3V or 5V
Power Supplies
6µA Supply Current
140ms Minimum Reset Pulse Width
RESET Remains Valid with VCC as Low as 1.4V
•
•
•
•
•
•
•
Active Low Manual Reset Input
No External Components
3-Pin SOT-23 Package
The ILC803 has an open drain output stage with active
low RESET output
3-Pin SC-70 package option
The ILC809 has an active low RESET output, while
the ILC810 offers an active high RESET output. The
reset output is guaranteed to remain asserted for a
minimum of 140ms after VCC has risen above the des-
ignated reset threshold. The ILC803, ILC809 and
ILC810 are available in either a 3-Pin SOT-23 pack-
age or a 3-Pin SC-70 packages.
Applications
•
•
•
•
Critical Microprocessor Power Monitoring
Portable Equipment
Intelligent Instruments
Computers & Printers, Controllers
Typical Circuit
VCC
Ordering Information
Part
Package
Temp. Range
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
VCC
VCC
ILC803_U
ILC809_U
ILC810_U
ILC803_W
ILC809_W
ILC810_W
3-Lead SOT-23
3-Lead SOT-23
3-Lead SOT-23
3-Lead SC-70
3-Lead SC-70
3-Lead SC-70
ILC803
ILC809
ILC810
µP
RESET
INPUT
RESET
(RESET)
( ) = ILC810
Place the device suffix of the desired reset threshold voltage from the table [below]
in the blank to complete the part number.
Pin Package Configurations
Reset Threshold Voltage (V)
Device Suffix
Top View
4.63
4.38
4.00
3.08
2.93
2.63
L
M
J
T
S
R
1
2
1
2
GND
GND
ILC803
ILC809
3
VCC
3
ILC810
VCC
RESET
RESET
SOT-23
SC-70
Impala Linear Corporation
ILC803/809/810 1.5
www.impalalinear.com
(408) 574-3939
Sept 1999
1
3-Pin µP Voltage Monitor
Absolute Maximum Ratings
Preliminary
Parameter
Terminal Voltage
Symbol
Ratings
-0.3 to 6.0
20
Units
V
VCC
VCC
Input Current
Output Current
Rate of Rise
mA
mA
V/µs
°C
°C
°C
RESET, RESET
20
100
VCC
TA
Operating Temperature Range
Storage Temperature Range
Lead Temperature (Soldering, 10 sec.)
Power Dissipation (TA = +70°C)
-40 to +85
-65 to +150
300
320
mW
Stresses above those listed under ABSOLUTE MAXIMUM RATINGS may cause permanent device failure. Functionality at
or above these limits is not implied. Exposure to absolute maximum ratings for extended periods may affect device reliabil-
ity. Operating ranges define those limits between which the functionality of the device is guaranteed.
Electrical Characteristics
VCC = 5V for ILC8__L/M/J, VCC = 3.3V for ILC8__S/T, VCC = 3V for ILC8__R, TA = Operating Temperature Range, unless otherwise noted.
Parameter
Operating Voltage Range, VCC
Conditions
Min
1.4
1.6
Typ
Max
5.5
5.5
Units
V
TA = 0°C to 70°C
TA = -40°C to 85°C
Supply Current, ICC
ILC803L/M/J, ILC809L/M/J, ILC810L/M/J
VCC < 3.6V, ILC803R/S/T, ILC809R/S/T, ILC810R/S/T
ILC803L, ILC809L, ILC810L
ILC803M, ILC809M, ILC810M
ILC803J, ILC809J, ILC810J
ILC803T, ILC809T, ILC810T
ILC803S, ILC809S, ILC810S
ILC803R, ILC809R, ILC810R
9
6
15
10
µA
Reset Voltage Threshold, VTH
4.50
4.25
3.89
3.00
2.85
2.55
140
4.63
4.38
4.00
3.08
2.93
2.63
240
4.75
4.50
4.10
3.15
3.00
2.70
560
V
Reset Timeout Period, tR
ms
RESET Output Voltage Low
(Active low ILC803 & 809) VOL
VCC = VTH ISINK = 1.2mA
0.3
0.4
V
V
VCC =VTH
ISINK = 3.2mA
RESET Open Drain Output
Leakage Current
VCC > VTH RESET Deasserted
7
µA
RESET Output Voltage VOH
RESET Output Voltage, VOL
VCC – 1.5
0.8 x VCC
V
V
ISOURCE = 800 µA, ILC809L/M/J
ISOURCE = 500 µA, ILC809R/S/T
VCC = VTH Min., ISINK = 3.2 mA, ILC809L/M/J
VCC = VTH Min., ISINK = 1.2 mA, ILC809R/S/T
VCC > 1.4 V, ISINK = 50 µA, TA = 0°C to 70°C
VCC > 1.6 V, ISINK = 50 µA, TA = -40°C to 85°C
1.8V < VCC < VTH Min., ISOURCE = 150 µA
ISINK = 3.2mA, ILC810L/M/J
0.4
0.3
0.3
0.3
RESET Output Voltage, VOH
RESET Output Voltage, VOL
0.8 x VCC
V
V
0.4
0.3
ISINK = 1.2mA, ILC810R/S/T
Pin Functions
Pin Number
ILC803
ILC809
ILC810 Description
Pin Name
GND
RESET
1
2
1
2
1
Ground Pin.
N/A
RESET goes low if VCC falls below the reset
threshold and remains asserted for one reset timeout
period (140ms min.) after VCC exceeds the reset
threshold.
RESET
N/A
N/A
3
2
RESET goes high if VCC falls below the reset
threshold and remains asserted for one reset timeout
period (140ms min.) after VCC exceeds the reset
threshold.
VCC
4
3
Power supply input, 3 V, 3.3 V or 5 V.
Impala Linear Corporation
ILC803/809/810 1.5
www.impalalinear.com
(408) 574-3939
Sept 1999
2
3-Pin µP Voltage Monitor
Preliminary
Circuit Description
Microprocessor Reset
The RESET pin is asserted whenever VCC falls below the
reset threshold voltage. The reset pin remains asserted for
a period of 240ms after VCC has risen above the reset
threshold voltage. The reset function ensures the micro-
processor is properly reset and powers up into a known
condition after a power failure. RESET will remain valid
with VCC as low as 1.4V.
RESET (ILC803, ILC809
RESET (ILC810)
3
VCC
+
-
Reset
Generator
2
Reset
Threshold (V)
1
GND
Figure 3: Block Diagram
VTH
VCC
Alternate Source Cross Reference Guide
Industry P/N
ILC Direct
Replacement
ILC803YU
ILC809JU
ILC809LU
tR
tR
MAX803XYUR-T
MAX809JEUR-T
MAX809LEUR-T
RESET
Figure 1: Timing Diagram
MAX809MEUR-T ILC809MU
MAX809REUR-T
MAX809SEUR-T
MAX809TEUR-T
MAX810JEUR-T
MAX810LEUR-T
ILC809RU
ILC809SU
ILC809TU
ILC810JU
ILC810LU
VCC Transients
The ILC803, ILC809 and ILC810 are relatively immune to
negative-going VCC glitches below the reset threshold.
Typically, a negative-going transient 125mV below the reset
threshold with a duration of 50µs (25µs for ILC8__R/S/T) or
less will not cause an unwanted reset.
MAX810MEUR-T ILC810MU
MAX810REUR-T
MAX810SEUR-T
MAX810TEUR-T
ILC810RU
ILC810SU
ILC810TU
Interfacing to Bi-directional Reset Pins
The ILC803/ILC809/ILC810 can interface with µPs with bi-
directional reset pins by connecting a 4.7kΩ resistor in
series with the ILC803/ILC809/ILC810 output and the mP
reset pin. ILC803 connects directly with a single pull-up
resistor (figure 2).
Device Markings Information
SC-70 Case
QJY
SOT-23 Case
QJYY
ILC803J
ILC803L
ILC803M
ILC803R
ILC803S
ILC803T
ILC809J
ILC809L
ILC809M
ILC809R
ILC809S
ILC809T
ILC810J
ILC810L
ILC810M
ILC810R
ILC810S
ILC810T
QLY
QMY
QRY
QSY
QTY
QLYY
QMYY
QRYY
QSYY
QTYY
VJYY
RESET Valid to 0V
A resistor can be added from the RESET pin to ground to
ensure the RESET output remains low with VCC down to
0V. A 100kΩ resistor connected from RESET to ground is
recommended. The size of the resistor should be large
enough to not load the RESET output and small enough to
pull-down any stray leakage currents.
VJY
VLY
VLYY
VMY
VRY
VSY
VTY
VMYY
VRYY
VSYY
VTYY
VCC
VCC
VCC
100K
ILC803
only
ZJY
ZJYY
ILC803
ILC809
ZCY
ZMY
ZRY
ZSY
ZCYY
ZMYY
ZRYY
ZSYY
µP
RESET
RESET
100K
ILC809
only
ZTY
ZTYY
Figure 2: Reset valid to VCC
Impala Linear Corporation
Y-LOT CODE
YY-LOT CODE
www.impalalinear.com
(408) 574-3939
Sept 1999
3
ILC803/809/810 1.5
3-Pin µP Voltage Monitor
Preliminary
Packaging Information
U Package, 3-Pin SOT-23
Dimensions are in inches
0.021
0.015
0.055
0.047
0.098
0.083
0.120
0.105
0.0059
0.0035
0.040
0.031
0-8°
0.010
0.005
0.079
0.071
0.004
0.001
W Package, 3-Pin SC-70
Dimensions are in inches
.087
.071
.053
.045
.087
.079
.009
.005
.043
.032
.004
.010
.004
.016
.012
.026
.051
.018
.006
Impala Linear Corporation
ILC803/809/810 1.5
www.impalalinear.com
(408) 574-3939
Sept 1999
4
3-Pin µP Voltage Monitor
Preliminary
Tape and Reel Information
Diagram applies to SOT-23 and SC-70
4.0 ± 0.1
1.75 ± 0.1
2.0 ± 0.05
O1.5 ± 0.1
3.5 ± 0.05
8.0 ± 0.3
O1.1 ± 0.1
4.0 ± 0.1
2.7 ± 0.1
3.1 ± 0.1
1.2 ± 0.1
Dimensions are in millimeters
Devices sold by Impala Linear Corporation are covered by the warranty and patent indemnification provisions appearing
in its Terms of Sale only. Impala Linear Corporation makes no warranty, express, statutory, implied, or by description
regarding the information set forth herein or regarding the freedom of the described devices from patent infringement.
Impala Linear Corporation makes no warranty of merchantability or fitness for any purpose. Impala Linear Corporation
reserves the right to discontinue production and change specifications and prices at any time and without notice.
Life Support Policy
Impala Linear Corporation’s products are not authorized for use as critical components in life support devices or systems.
1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant into the body,
or (b) support or sustain life, and whose failure to perform, when properly used in accordance with instructions for
use provided in the labelling, can be reasonably expected to result in a significant injury to the user.
This product is intended for use in normal commercial applications. Applications requiring an extended temperature
range, unusual environmental requirements, or high reliability applications, such as military and aerospace, are specif-
ically not recommended without additional processing by Impala Linear Corporation.
2. A critical component is any component of a life support device or system whose failure to perform can be reason-
ably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness.
Impala Linear Corporation assumes no responsibility for the use of any circuitry other than circuitry embodied in an
Impala Linear Corporation product. No other circuits, patents, licenses are implied.
Impala Linear Corporation
(408) 574-3939
ILC803/809/810 1.5
www.impalalinear.com
Sept 1999
5
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