UNISONIC TECHNOLOGIES CO., LTD
81XX LINEAR INTEGRATED CIRCUIT
www.unisonic.com.tw 1 of 7
Copyright © 2013 Unisonic Technologies Co., Ltd QW-R119-001,S
POWER RESET IC
DESCRIPTION
The function of UTC 81XX is to accurately reset system after
detecting the supply voltage at the time of switching power on and
instantaneous power off in various CPU and other logic systems.
Further, this IC, with its super low consumption current and high
precision voltage detection capacity, UTC 81XX is the most suited
as a voltage check circuit for a number of products which use
batteries.
FEATURES
*High precision voltage detection. (VSS±3% max)
*low current consumption.
(ICCH=5µA max. ICCL=5µA max.)
*Low operating threshold voltage (0.65V typ.)
*Hysteresis voltage is provided as a detect voltage.
(50mV typ.)
*Large output current at the time ON (15mA typ.)
*The detect voltage can be selected at your discretion at 0.1V step
within the range of 1.9V to 4.6V by the following stipulation
method.
SOT-23
(EIAJ SC-59)
1
2
3
SOT-89
1
TO-92
1
SOT-23-3
(JEDEC TO-236)
1
2
3
SOT-25
45
321
81XX LINEAR INTEGRATED CIRCUIT
UNISONIC TECHNOLOGIES CO., LTD 2 of 7
www.unisonic.com.tw QW-R119-001,S
ORDERING INFORMATION
Ordering Number Package Pin Assignment Packing
Lead Free Halogen Free 1 2 3 4 5
81XXL-AB3-D-R 81XXG-AB3-D-R SOT-89 I G O - - Tape Reel
81XXL-AB3-E-R 81XXG-AB3-E-R SOT-89 O I G - - Tape Reel
81XXL-AE3-2-R 81XXG-AE3-2-R SOT-23 I O G - - Tape Reel
81XXL-AE3-3-R 81XXG-AE3-3-R SOT-23 O G I - - Tape Reel
81XXL-AE3-5-R 81XXG-AE3-5-R SOT-23 G O I - - Tape Reel
81XXL-AE2-2-R 81XXG-AE2-2-R SOT-23-3 I O G - - Tape Reel
81XXL-AE2-3-R 81XXG-AE2-3-R SOT-23-3 O G I Tape Reel
81XXL-AE2-5-R 81XXG-AE2-5-R SOT-23-3 G O I Tape Reel
81XXL-AF5-A-R 81XXG-AF5-A-R SOT-25
NNGO I Tape Reel
81XXL-AF5-B-R 81XXG-AF5-B-R SOT-25
OIGN N Tape Reel
81XXL-T92-D-B 81XXG-T92-D-B TO-92
IGO- - Tape Box
81XXL-T92-D-K 81XXG-T92-D-K TO-92 I G O - - Bulk
81XXL-T92-D-R 81XXG-T92-D-R TO-92 I G O - - Tape Reel
81XXL-T92-E-B 81XXG-T92-E-B TO-92 O I G - - Tape Box
81XXL-T92-E-K 81XXG-T92-E-K TO-92 O I G - - Bulk
81XXL-T92-E-R 81XXG-T92-E-R TO-92 O I G - - Tape Reel
Note: Pin Assignment: I: VIN O: VOUT G: GND N: NC
XX: Detected Voltage Value
81XX LINEAR INTEGRATED CIRCUIT
UNISONIC TECHNOLOGIES CO., LTD 3 of 7
www.unisonic.com.tw QW-R119-001,S
MARKING INFORMATION
PACKAGE MARKING
SOT-23
SOT-23-3
SOT-89
123
81XX
Date Code
Voltage Code L: Lead Free
G: Halogen Free
SOT-25
54
3
21
Date Code
Pin Code
Voltage Code
G: Halogen Free
L: Lead Free
TO-92
BLOCK DIAGRAM
The Pin2 this product is SUB, so connect the pin to Ground.
81XX LINEAR INTEGRATED CIRCUIT
UNISONIC TECHNOLOGIES CO., LTD 4 of 7
www.unisonic.com.tw QW-R119-001,S
ABSOLUTE MAXIMUM RATINGS
PARAMETER SYMBOL RATINGS UNIT
Power Supply Voltage VCC -0.3~+10 V
Power Dissipation
TO-92
PD
400 mW
SOT-89 500 mW
SOT-23/SOT-23-3 300 mW
SOT-25 350 mW
Operating Temperature TOPR -20~+75 °C
Storage Temperature TSTG -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, The unit of resistance is unless otherwise indicated.)
PARAMETER SYMBOL (Note 1) TEST CONDITIONS MIN TYP MAX UNIT
Detection Voltage VSS 1
RL=470
VCC=H->L
VOUT=VCC
UTC 8150 4.850 5.000 5.150
V
UTC 8146 4.462 4.600 4.738
UTC 8145 4.365 4.500 4.635
UTC 8144 4.268 4.400 4.532
UTC 8143 4.171 4.300 4.429
UTC 8142 4.074 4.200 4.326
UTC 8141 3.977 4.100 4.223
UTC 8140 3.880 4.000 4.120
UTC 8139 3.783 3.900 4.017
UTC 8138 3.686 3.800 3.914
UTC 8137 3.589 3.700 3.811
UTC 8136 3.492 3.600 3.708
UTC 8135 3.395 3.500 3.605
UTC 8134 3.298 3.400 3.502
UTC 8133 3.201 3.300 3.399
UTC 8132 3.104 3.200 3.296
UTC 8131 3.007 3.100 3.193
UTC 8130 2.910 3.000 3.090
UTC 8129 2.813 2.900 2.987
UTC 8128 2.716 2.800 2.884
UTC 8127 2.619 2.700 2.781
UTC 8126 2.522 2.600 2.678
UTC 8125 2.425 2.500 2.575
UTC 8124 2.328 2.400 2.472
UTC 8123 2.231 2.300 2.369
UTC 8122 2.134 2.200 2.266
UTC 8121 2.037 2.100 2.163
UTC 8120 1.940 2.000 2.060
UTC 8119 1.843 1.900 1.957
UTC 8118 1.746 1.800 1.854
Hysteresis Voltage ΔVSS 1
RL=470, VCC=L>H->L,
VOUT=VCC 30 50 100 mV
Detection Voltage Temperature
Coefficient VSS/ΔT 1
RL=470, TA=-20~+75°C
VOUT=VCC ±0.01 %/°C
81XX LINEAR INTEGRATED CIRCUIT
UNISONIC TECHNOLOGIES CO., LTD 5 of 7
www.unisonic.com.tw QW-R119-001,S
ELECTRICAL CHARACTERISTICS(Cont.)
PARAMETER SYMBOL (Note 1) TEST CONDITIONS MIN TYP MAX UNIT
Low Level Output Voltage VOL 1
VCC=VSS MIN -0.05V,
RL=470 0.2 0.4 V
Output Leakage Current IOH 2 VCC=10V , VOUT=VCC ±0.1 µA
Circuit Current at ON Time ICCL 3 VCC=VSS MIN -0.05V, RL=∞ 3 5 µA
Circuit Current at OFF Time ICCH 3 VCC=VSS TYP/0.85, RL=∞ 3 5 µA
“H” Transmission Delay Time TPLH
(Note 2) 4 CL=100pF, RL=4.7k 20 60 µS
“L” Transmission Delay Time TPHL
(Note 3) 4 CL=100pF, RL=4.7k 20 60 µS
Operating Threshold Voltage VOPL 1 RL=4.7k, VOL0.4V 0.65 0.85 V
Output current at ON Time 1 IOL1 2
RL=0, VCC=Vs MIN -0.05V,
VOUT=0.4V 5 mA
Output current at ON Time 2 IOL2 2
TA=-20~+75°C
RL=0, VCC=VSS MIN -0.15V
VOUT=0.4V
3 mA
Note: 1.
2.
3.
MEASUREMENT CIRCUIT
TPLH: VCC=(VSS Typ. -0.4V) -> (VSS Typ. +0.4V)
TPHL: VCC=(VSS Typ. +0.4V) -> (VSS Typ. -0.4V)
81XX LINEAR INTEGRATED CIRCUIT
UNISONIC TECHNOLOGIES CO., LTD 6 of 7
www.unisonic.com.tw QW-R119-001,S
MEASURING CIRCUITS
V2
V1
VCC
UTC 81XX
RL
10µF
/10V
+
1
GND
VCC VOUT
V2
V1
VCC
UTC 81XX
10µF
/10V
+
2
GND
VCC VOUT A
VOUT
VCC
UTC
81XX
10µF
/10V
+
3
GND
VCC VOUT
V
A
Note:
1.) A: DC AMMETER V: DC VOLTMETER CRT: OSCILLOSCOPE
2.) INPUT PULSE
VsTyp. +0.4V
VsTyp. -0.4V
0V
81XX LINEAR INTEGRATED CIRCUIT
UNISONIC TECHNOLOGIES CO., LTD 7 of 7
www.unisonic.com.tw QW-R119-001,S
TYPICAL CHARACTERISTICS
Max Input Voltage Characteristics
Power Supply Voltage, VCC (V)
0
200
400
600
800
1000
1200
010 3040 6020 50
Time (20µs/div)
Transmission Delay Time(8145)
CH1
CH2
0
CH1:VCC=4.1~4.9V
CH2:VOUT
1
2
3
4
5
6
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.
