www.fairchildsemi.com
ILC5061
Power Supply reset Monitor with 1% Precision
Features
All-CMOS design in SOT-23 or SC70 package
±1% precision in Reset Detection
Only 1µA of Iq
2mA of sink current capability
Built-in hysteresis of 5% of detection voltage
Voltage options of 2.6, 2.9, 3.1, 4.4, and 4.6V fit most
supervisory applications
• Open-Drain Reset Output
•
•
•
•
•
•
Description
All-CMOS Monitor circuits in either a 3-lead SOT-23 or
SC70 package offer the best performance in power consump-
tion and accuracy.
The ILC5061 comes in a series of ±1% accurate trip voltages
to fit most microprocessor applications. Even though its out-
put can sink 2mA, the device draws only 1µA in normal
operation.
Additionally, a built-in hysteresis of 5% of detect voltage
simplifies system design.
Applications
•
•
•
•
Microprocessor reset circuits
Memory battery back-up circuitry
Power-on reset circuits
Portable and battery powered electronics
Block Diagram
V
IN
Pin Package Configurations
Top View
V
OUT
V
OUT
1
V
OUT
1
SC-70
V
REF
V
SS
2
3
V
IN
V
SS
2
SOT-23
3
V
IN
V
SS
Rev. 2.2 1/31/02
ILC5061
PRODUCT SPECIFICATION
Absolute Maximum Ratings
Parameter
Input Voltages
Output Current
Output Voltages
Continuous Total
Power Dissipation
Operation Ambient temperature
Storage Temperature
SOT 23
Symbol
V
IN
I
OUT
V
OUT
P
d
T
opr
T
stg
Ratings
12
50
V
SS
-0.3~+V
IN
+03
150
-30~+80
-40~+125
Units
V
mA
V
mW
o
C
o
C
Electrical Characteristics
T
A
= 25°C
Parameter
Detect Fail Voltage
Hysteresis Range
Symbol
V
DF
V
HYS
V
IN
= 1.5V
V
IN
= 2.0V
V
IN
= 3.0V
V
IN
= 4.0V
V
IN
= 5.0V
V
DF
= 2.1~ 6.0V
N-ch V
DS
= 0.5V
V
IN
= 1.0V
V
IN
= 2.0V
V
IN
= 3.0V
V
IN
= 4.0V
V
IN
= 5.0V
-200
1.5
2.2
7.7
10.1
11.5
13.0
+100
+200
Conditions
Min
V
DF
X 0.99
V
DF
X 0.02
Type
V
DF
0.9
1.0
1.3
1.6
2.0
Max
V
DF
X 1.01
2.6
3.0
3.4
3.8
4.2
10.0
Units
V
V
V
DF
X 0.05 V
DF
X 0.08
Supply Current
I
SS
µA
Operating Voltage
V
IN
V
Output Current
I
OUT
mA
Temperature Charac-
teristics
Delay Time Release
Voltage Output Inver-
sion)
D
V
DF
/(
D
T
opr
* V
DF
)
-30
o
C<T
opr
<80
o
C
T
DLY
(V
DR
to V
OUT
inversion)
Ppm/
o
C
ms
0.1
Note:
1. An additional resistor between the V
IN
pin and supply voltage may cause deterioration of the characteristics due
to increasing V
DR.
2
Rev. 2.2 1/31/02
PRODUCT SPECIFICATION
ILC5061
Functional Description
The following designators 1~6 refer to the timing diagram below.
1. While the input voltage (V
IN
) is higher than the detect voltage (V
DF
), the V
OUT
output pin is at high impedance
state.
2. When the input V
IN
voltage falls lower than V
DF
, V
OUT
drops near to ground voltage
3. If the input voltage further decreases below the minimum operating voltage (V
MIN
), the V
OUT
output becomes
unstable. In this condition, if the V
OUT
pin is pulled up, V
OUT
indicates the V
IN
voltage.
4. During an increase of the input voltage from the V
SS
voltage, V
OUT
is not stable in the voltage below the V
MIN
.
Exceeding that level, the output stays at the ground level (V
SS
) between the minimum operating voltage (V
MIN
)
and the detect release voltage (V
DR
).
5. If the input voltage increases more than V
DR
, then the V
OUT
output pin is at high impedance state.
6. The difference between V
DR
and V
DF
is the hysteresis in the system.
INPUT VOLTAGE (V
IN
)
DETECT RELEASE VOLTAGE (V
DR
)
6
DETECT FAIL VOLTAGE (V
DF
)
MINIMUM OPERATING VOLTAGE (V
MIN
)
GROUND VOLTAGE (V
SS
)
OUTPUT VOLTAGE (V
OUT
)
GROUND VOLTAGE (V
SS
)
1
2
3
4
5
Rev. 2.2 1/31/02
3
ILC5061
PRODUCT SPECIFICATION
Typical Performance Characteristics
(General conditions for all curves)
Output Voltage vs Output Current
80
OUTPUT CURRENT I
OUT
(mA)
70
60
50
3.0V
40
30
20
10
0
0
1
2
3
4
OUTPUT VOLTAGE V
OUT
(V)
1.5V
0
0
0.2
0.4
0.6
0.8
OUTPUT VOLTAGE V
OUT
(V)
2.0V
2.5V
3.5V
ILC5061
V
IN
= 4.0V
OUTPUT CURRENT I
OUT
(µA)
800
Output Voltage vs Output Current
ILC5061
V
IN
= 0.8V
600
400
V
IN
= 0.7V
200
I
SS
vs Input Voltage*
4.0
ILC5061
20
OUTPUT CURRENT I
OUT
(mA)
Output Current vs Input Voltage
ILC5061
V
DS
= 0.5V
25˚C
15
80˚C
T
opr
= -30˚C
3.0
I
SS
(µA)
Topr = 80˚C
2.0
25˚C
-30˚C
10
1.0
5
0
0
1
2
3
4
5
6
7
8
9
10
INPUT VOLTAGE V
IN
(V)
* A spike of 1/2 to 1µA may appear as V
IN
crosses V
DR
or V
DF
0
0
1
2
3
4
5
INPUT VOLTAGE V
IN
(V)
4
Rev. 2.2 1/31/02
PRODUCT SPECIFICATION
ILC5061
SOT-23 Package
0.021
0.015
0.055
0.047
0.098
0.083
0.120
0.105
0.040
0.031
0.079
0.071
0.0059
0.0035
0-8˚
0.004
0.001
0.010
0.005
SC70 Package
.087 (2.2)
.071 (1.8)
.053 (1.35)
.045 (1.15)
.087 (2.2)
.079 (2.0)
.009 (.23)
.005 (.13)
.043 (1.1)
.032 (.80)
.004 (.10)
.010 (.25)
.004 (.10)
.026
(.65)
.052 (1.3)
.016 (.40)
.012 (.30)
.018 (.45)
.006 (.15)
Rev. 2.2 1/31/02
5
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