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| 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 : 1.2A Typ. (Detection Voltage 1.5 V @ VDD=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 www..com www.unisonic.com.tw Copyright (c) 2010 Unisonic Technologies Co., Ltd 1 of 5 QW-R502-368.b 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 VOUT Voltage Detection Output Pin 2 VDD Voltage Input Pin 3 VSS 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 VDD or VSS. www..com UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 2 of 5 QW-R502-368.b 88NXX BLOCK DIAGRAM Preliminary CMOS IC VDD + VREF Delay circuit VOUT VSS CD www..com UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 3 of 5 QW-R502-368.b 88NXX Preliminary CMOS IC ABSOLUTE MAXIMUM RATING (Ta=25C, unless otherwise specified) PARAMETER SYMBOL RATINGS UNIT Power Supply Voltage VDD - VSS 12 V CD pin Input Voltage VCD VSS -0.3 ~ VDD+0.3 V Output Voltage VOUT VSS -0.3 ~ VSS +12 V Output Current IOUT 50 mA Power Dissipation PD 250 mW Operating Temperature TOPR -40 ~ +85 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=25C unless otherwise specified) Detection Voltage: 2.1V PARAMETER Detection Voltage (Note 1) Hysteresis Width Current Consumption Operating Voltage Output Current Leakage Current SYMBOL -VDET VHYS ISS VDD IOUT ILEAK TEST CIRCUIT 1 1 2 1 3 3 1 4 TEST CIRCUIT 1 1 2 1 3 3 VDD=4.5 V Output transistor Nch, VDS=0.5V, VDD=2.4V Output transistor Nch, VDS=10V, VDD=10V VDD=3.5 V Output transistor Nch, VDS=0.5V, VDD=1.2V Output transistor Nch, VDS=10V, VDD=10V Ta=-40C ~ +85C VDD=3.5V, CD=4.7 nF 20 TEST CONDITIONS MIN TYP MAX -VDET(S) x1.02 -VDET x0.08 5 10.0 UNIT V V A V mA 0.1 100 30 A -VDET(S) -VDET(S) x0.98 -VDET -VDET x0.03 x0.05 1.2 0.95 0.59 1.36 - VDET Detection Voltage Temperature Ta x - VDET Coefficient (Note 2) Delay Time tD 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 -VDET VHYS ISS VDD IOUT ILEAK TEST CONDITIONS MIN TYP MAX -VDET(S) x1.02 -VDET x0.08 5 10.0 UNIT V V A V mA 0.1 A -VDET(S) -VDET(S) x0.98 -VDET -VDET x0.03 x0.05 1.3 0.95 2.88 4.98 - VDET Detection Voltage Temperature 1 Ta=-40C ~ +85C 100 350 ppm/C Ta x - VDET Coefficient (Note 2) Delay Time tD 4 VDD=4.5V, CD=4.7 nF 20 27 34 ms -VDET: Actual detection voltage Note: 1. -VDET(S): Specified detection voltage www..com 2. The temperature change ratio in the detection voltage [mV/C] is calculated by using the following equation: - VDET - V DET [mV/ C] (1) = -VDET (Typ.)[ V ]( 2 ) x [ppm / C]( 3 ) / 1000 Ta Ta x -VDET (1) Temperature change ratio of the detection voltage (2) Specified detection voltage (3) Detection voltage temperature coefficient UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 4 of 5 QW-R502-368.b 88NXX TEST CIRCUITS Preliminary CMOS IC VDD VDD 88NXX Series VOUT 100k V VSS CD V Figure 1 Figure 2 VDD VDD V 88NXX Series VSS VOUT VDD VOUT 100k A P.P. 88NXX Series Oscilloscope VSS CD CD V VDS 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 www..com 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. UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 5 of 5 QW-R502-368.b |
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