UNISONIC TECHNOLOGIES CO., LTD
88NXX
Preliminary
CMOS IC
BUILT-IN DELAY CIRCUIT
HIGH-PRECISION VOLTAGE
DETECTOR
DESCRIPTION
The UTC
88NXX
is a
high-precision
voltage detector developed
basing on CMOS technology. The detection voltage is fixed internally.
A
time delayed reset can be accomplished with an external
capacitor.
N-ch open-drain output form is available.
The UTC
88NXX
is generally used for power supply monitor of
portable equipment such as notebook PCs, digital still cameras, PDAs,
and mobile phones, constant voltage power monitor of cameras, video
equipment and communication equipment, and power monitor or reset of
CPUs and microcomputers.
FEATURES
* Extremely Low Current Dissipation :
1.2μA Typ. (Detection Voltage
≥
1.5 V @ V
DD
=3.5 V)
*
±2.0
% Accuracy Detection Voltage
* Hysteresis Characteristics: 5% TYP
* Detection Voltage varies from 1.5V to 6.0V with 0.1V step
* Output Forms: N-ch open-drain output (when it is in Active-Low)
ORDERING INFORMATION
Ordering Number
Package
88NXXG-AF5-R
SOT-25
Note: XX: Output Voltage, refer to Marking Information.
Packing
Tape Reel
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88NXX
MARKING INFORMATION
PACKAGE
VOLTAGE CODE
Preliminary
CMOS IC
MARKING
SOT-25
21:2.1V
29:2.9V
PIN CONFIGURATION
PIN DESCRIPTION
PIN NO
PIN NAME
DESCRIPTION
1
V
OUT
Voltage Detection Output Pin
2
V
DD
Voltage Input Pin
3
V
SS
GND Pin
4
NC
No Connection (Note)
5
CD
Connection Pin For Delay Capacitor
Note: The NC pin is electrically open and can be connected to V
DD
or V
SS
.
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88NXX
BLOCK DIAGRAM
Preliminary
CMOS IC
V
DD
+
-
V
REF
Delay
circuit
V
OUT
V
SS
CD
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88NXX
Preliminary
CMOS IC
ABSOLUTE MAXIMUM RATING
(Ta=25°C, unless otherwise specified)
PARAMETER
SYMBOL
RATINGS
UNIT
Power Supply Voltage
V
DD
- V
SS
12
V
CD pin Input Voltage
V
CD
V
SS
-0.3 ~ V
DD
+0.3
V
Output Voltage
V
OUT
V
SS
-0.3 ~ V
SS
+12
V
Output Current
I
OUT
50
mA
Power Dissipation
P
D
250
mW
Operating Temperature
T
OPR
-40 ~ +85
°C
Storage Temperature
T
STG
-40 ~ +125
°C
Note: Absolute maximum ratings are those values beyond which the device could be permanently damaged.
Absolute maximum ratings are stress ratings only and functional device operation is not implied.
ELECTRICAL CHARACTERISTICS
(Ta=25°C unless otherwise specified)
Detection Voltage: 2.1V
PARAMETER
Detection Voltage (Note 1)
Hysteresis Width
Current Consumption
Operating Voltage
Output Current
Leakage Current
SYMBOL
-V
DET
V
HYS
I
SS
V
DD
I
OUT
I
LEAK
TEST
CIRCUIT
1
1
2
1
3
3
1
4
TEST
CIRCUIT
1
1
2
1
3
3
V
DD
=4.5 V
Output transistor
Nch, V
DS
=0.5V, V
DD
=2.4V
Output transistor
Nch, V
DS
=10V, V
DD
=10V
V
DD
=3.5 V
Output transistor
Nch, V
DS
=0.5V, V
DD
=1.2V
Output transistor
Nch, V
DS
=10V, V
DD
=10V
Ta=-40°C ~ +85°C
V
DD
=3.5V, C
D
=4.7 nF
20
TEST CONDITIONS
MIN
TYP
MAX
-V
DET(S)
×1.02
-V
DET
×0.08
5
10.0
UNIT
V
V
μA
V
mA
0.1
±100
30
μA
-V
DET(S)
-V
DET(S)
×0.98
-V
DET
-V
DET
×0.03 ×0.05
1.2
0.95
0.59
1.36
Δ
- V
DET
Detection Voltage Temperature
Δ
Ta × - V
DET
Coefficient (Note 2)
Delay Time
t
D
±350 ppm/°C
34
ms
Detection Voltage: 2.9V
PARAMETER
Detection Voltage (Note 1)
Hysteresis Width
Current Consumption
Operating Voltage
Output Current
Leakage Current
SYMBOL
-V
DET
V
HYS
I
SS
V
DD
I
OUT
I
LEAK
TEST CONDITIONS
MIN
TYP
MAX
-V
DET(S)
×1.02
-V
DET
×0.08
5
10.0
UNIT
V
V
μA
V
mA
0.1
μA
-V
DET(S)
-V
DET(S)
×0.98
-V
DET
-V
DET
×0.03 ×0.05
1.3
0.95
2.88
4.98
Δ
- V
DET
Detection Voltage Temperature
1
Ta=-40°C ~ +85°C
±100 ±350 ppm/°C
Δ
Ta × - V
DET
Coefficient (Note 2)
Delay Time
t
D
4
V
DD
=4.5V, C
D
=4.7 nF
20
27
34
ms
-V
DET
: Actual detection voltage
Note: 1.
-V
DET(S)
: Specified detection voltage
2. The temperature change ratio in the detection voltage [mV/°C] is calculated by using the following equation:
Δ
- V
DET
Δ
- V
DET
[mV/ °C]
(1)
= -V
DET
(Typ.)[ V ]
( 2 )
×
[ppm / °C]
( 3 )
÷ 1000
Δ
Ta
Δ
Ta × -V
DET
(1) Temperature change ratio of the detection voltage
(2) Specified detection voltage
(3) Detection voltage temperature coefficient
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88NXX
TEST CIRCUITS
Preliminary
CMOS IC
V
DD
V
DD
88NXX Series
V
OUT
100kΩ
V
V
SS
CD
V
Figure 1
Figure 2
V
DD
V
DD
V
88NXX
Series
V
SS
V
OUT
V
DD
V
OUT
100kΩ
A
P.P.
88NXX Series
Oscilloscope
V
SS
CD
CD
V
V
DS
Figure 3
Figure 4
UTC assumes no responsibility for equipment failures that result from using products at values that
exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or
other parameters) listed in products specifications of any and all UTC products described or contained
herein. UTC products are not designed for use in life support appliances, devices or systems where
malfunction of these products can be reasonably expected to result in personal injury. Reproduction in
whole or in part is prohibited without the prior written consent of the copyright owner. The information
presented in this document does not form part of any quotation or contract, is believed to be accurate
and reliable and may be changed without notice.
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www.unisonic.com.tw
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