 |
|
| If you can't view the Datasheet, Please click here to try to view without PDF Reader . |
|
|
|
| If you can't view the Datasheet, Please click here to try to view without PDF Reader . |
|
|
| Datasheet File OCR Text: |
| NJU7708/09 VOLTAGE DETECTOR with Delay Function ! GENERAL DESCRIPTION The NJU7708/09 is a low quiescent current voltage detector with delay function featuring high precision detection voltage. The detection voltage is internally fixed with an accuracy of 1.0%. The NJU7708/09 are useful for preventing malfunction of microcomputer or DSP etc. through detect a drop in voltage of battery or power supply. The delay function achieves set wait time when supply voltage is unstable. Moreover, the delay function can make a sequence that other devices in application work and stabilize before microcomputer or DSP works. Delay time can be set by logical combination from 4-delay time. NJU7708 is Nch. Open Drain and NJU7709 is a C-MOS output type. Small packaging makes NJU7708 and NJU7709 suitable for space conscious applications. ! FEATURES " High Precision detection Voltage " Low Quiescent Current " Detection Voltage Range " Delay Time (Built-in Fixed Type) " Output Configuration " CMOS Technology " Package Outline ! PIN CONFIGURATION 5 4 ! PACKAGE OUTLINE NJU7708/09F 1.0% 1.3A 1.3 6.0V(0.1V step) 0ms/50ms/100ms/200ms: Logical selectable 4-delay time NJU7708: Nch. Open Drain Type NJU7709: C-MOS Output Type SOT-23-5 123 NJU7708/09F ! EQUIVALENT CIRCUIT VDD PIN FUNCTION 1. D1 2. VSS 3. D2 4. VOUT 5. VDD Delay Circuit Vref V OUT Vref Delay Circuit V OUT V SS D1 D2 D1 D2 NJU7708 NJU7709 Ver.2005-02-28 -1- NJU7708/09 ! DETECTION VOLTAGERANK LIST Device Name VDET NJU7708/09F15 1.5V NJU7708/09F27 2.7V NJU7708/09F42 4.2V NJU7708/09F06 6.0V ! LOGICAL TABLE OF DELAY TIME D1 D2 DELAY H H 0ms H L 50ms L H 100ms L L 200ms ! NJU7708 ! ABSOLUTE MAXIMUM RATINGS PARAMETER SYMBOL Input Voltage VDD Output Voltage VOUT Output Current IOUT RATINGS +10 VSS-0.3 +10 50 350(*1) Power Dissipation PD SOT-23-5 mW 200(*2) Operating Temperature Topr -40 +85 C Storage Temperature Tstg -40 +125 C (*1) : Mounted on glass epoxy board based on EIA/JEDEC. (114.3x76.2x1.6mm: 2Layers) (*2) : Device itself ! ELECTRICAL CHARACTERISTICS PARAMETER SYMBOL Detection Voltage VDET Hysterisis Voltage VHYS Quiescent Current Output Current Output Leak Current Detection Voltage Temperature Coefficient ISS IOUT ILEAK VDET/Ta (Ta=25C) MAX. UNIT +1.0% V 130 V 1.7 A 2.2 A mA - mA - 0.1 A - ppm/C (Ta=25C) UNIT V V mA TEST CONDITION VDD=VDET+1V Nch,VDS=0.5V VDD=VOUT=9V Ta=0 +85C VDET=1.5V 2.5V Version VDET=2.6V 6.0V Version VDD=1.2V VDD=2.4V (2.7V Version) MIN. -1.0% 70 - - 0.75 4.5 - - TYP. - 90 1.0 1.3 2.0 7.0 - 100 100 300 s 50 57.5 ms Delay Time td VDD=VDET+1V 100 115 ms 200 230 ms VD1_H/ VD2_H VDD V - Delay Time Change Terminal Input Voltage VD1_L/ VD2_L 0.3 V - 9 V Operating Voltage(*3) VDD RL=100k - (*3): The minimum operating voltage(VOPL) indicates the same value of the input voltage(VDD) on condition that VOUT becomes 10% or less of the input voltage(VDD). D1=H, D2=H D1=H, D2=L D1=L, D2=H D1=L, D2=L 25 42.5 85 170 1.5 0 0.7 -2- Ver.2005-02-28 NJU7708/09 ! TEST CIRCUIT "Quiescent Current TEST CIRCUIT "Detection Voltage /Minimum Operating Voltage TEST CIRCUIT ISS A V DD V DET / V OPL V OUT V DD D2 D1 V V DD RL V OUT V D2 V OUT NJM7708 D1 NJM7708 V SS V SS "Leak Current/Output Current TEST CIRCUIT "Delay Time=0mS TEST CIRCUIT Oscilloscope IOUT / ILEAK V DD V DD D1 V OUT A V DD V DD V OUT RL ch1 ch2 NJM7708 D2 V OUT / V DS NJM7708 D1 D2 V SS V SS "Delay Time=50mS TEST CIRCUIT Oscilloscope "Delay Time=100mS TEST CIRCUIT Oscilloscope RL V DD V DD V OUT ch1 ch2 RL V DD V DD V OUT ch1 ch2 NJM7708 D1 D2 NJM7708 D1 D2 V SS V SS Ver.2005-02-28 -3- NJU7708/09 ! TEST CIRCUIT "Delay Time=200mS TEST CIRCUIT Oscilloscope RL V DD V DD V OUT ch1 ch2 NJM7708 D1 D2 V SS ! TYPICAL APPLICATION 1 Power Supply Voltage Supervisory Circuit V DD RL V DD V OUT NJM7708 D1 D2 Reset Signal INPUT Micro-Processor etc V SS 2 Power Supply Voltage Supervisory Circuit (Another Power Supply to Micro-Processor) V DD1 V DD2 RL V DD V OUT NJM7708 D1 D2 Reset Signal INPUT Micro-Processor etc V SS -4- Ver.2005-02-28 NJU7708/09 ! NJU7709 ! ABSOLUTE MAXIMUM RATINGS PARAMETER SYMBOL Input Voltage VDD Output Voltage VOUT Output Current IOUT (Ta=25C) RATINGS UNIT +10 V V VSS-0.3 VDD+0.3 50 mA 350(*4) Power Dissipation PD SOT-23-5 mW 200(*5) Operating Temperature Topr -40 +85 C Storage Temperature Tstg -40 +125 C (*4) : Mounted on glass epoxy board based on EIA/JEDEC. (114.3x76.2x1.6mm: 2Layers) (*5) : Device itself ! ELECTRICAL CHARACTERISTICS PARAMETER SYMBOL Detection Voltage VDET Hysterisis Voltage VHYS Quiescent Current ISS (Ta=25C) MAX. UNIT +1.0% V 130 V 1.7 A 2.2 A mA - mA - mA - mA - mA - - 300 57.5 115 230 VDD 0.3 ppm/C s ms ms ms V V Output Current IOUT MIN. -1.0% 70 VDET=1.5V 1.9V Version - VDD=VDET+1V VDET=2.0V 6.0V Version - VDD=1.2V 0.75 Nch, VDS=0.5V 4.5 VDD=2.4V(2.7V Version) 2.0 VDD=4.8V(3.9V Version) Pch, VDS=0.5V VDD=6.0V(4.0V5.6V Version) 2.5 3.0 VDD=8.4V (5.7V Version) Ta=0 +85C D1=H, D2=H D1=H, D2=L D1=L, D2=H D1=L, D2=L - 25 42.5 85 170 1.5 0 TEST CONDITION TYP. - 90 1.0 1.3 2.0 7.0 3.5 4.0 5.0 100 100 50 100 200 - - Detection Voltage Temperature Coefficient Delay Time Delay Time Change Terminal Input Voltage VDET/Ta td VD1_H/ VD2_H VD1_L/ VD2_L VDD VDD=VDET+1V, 0.8 9 V RL=100k - (*6): The minimum Operating Voltage(VOPL) indicates the same value of the output voltage(VOUT) on condition that VOUT becomes 10% or less of the input voltage(VDD). Operating Voltage (*6) Ver.2005-02-28 -5- NJU7708/09 ! TEST CIRCUIT "Quiescent Current TEST CIRCUIT "Detection Voltage TEST CIRCUIT ISS A V DD V DET / V OPL V OUT V DD D2 D1 V V DD V OUT V D2 V OUT NJM7709 D1 NJM7709 V SS V SS " Nch Output Current TEST CIRCUIT "Pch Output Current TEST CIRCUIT V DS IOUT V DD V DD D1 V OUT A V DD D2 V DS D1 V DD V OUT A IOUT D2 NJM7709 NJM7709 V SS V SS "Delay Time=0mS TEST CIRCUIT Oscilloscope "Delay Time=50mS TEST CIRCUIT Oscilloscope ch1 ch2 ch1 ch2 V DD V DD V OUT V DD V DD V OUT NJM7709 D1 D2 NJM7709 D1 D2 V SS V SS -6- Ver.2005-02-28 NJU7708/09 ! TEST CIRCUIT "Delay Time=100mS TEST CIRCUIT "Delay Time=200mS TEST CIRCUIT Oscilloscope Oscilloscope ch1 ch2 ch1 ch2 V DD V DD V OUT V DD V DD V OUT NJM7709 D1 D2 NJM7709 D1 D2 V SS V SS "Minimum Operating Voltage TEST CIRCUIT V OPL V DD V V DD D1 V OUT RL NJM7709 D2 V V OUT V SS ! TYPICAL APPLICATION 1Power Supply Voltage Supervisory Circuit V DD V DD V OUT NJM7709 D1 D2 Reset Signal INPUT Micro-Processor etc V SS Ver.2005-02-28 -7- NJU7708/09 ! FUNCTIONAL DESCRIPTION (1) Basic Operation Supply voltage (VDD) Detection voltage (VDET) Minimum operation voltage (VOPL) VSS Hysteresis voltage (VHYS) Release voltage (VDET + VHYS) Output voltage (VOUT) (1) When supply voltage(VDD) drops below detection voltage(VDET), Output voltage(VOUT) changes "H" to "L" to alert reset state. (2) The reset state is kept while VDD is lower than release voltage. The release voltage is a sum of VDET and Hysterisis voltage (VHYS). Please refer to the (*7) below. (3) When VDD becomes higher than the release voltage and reset release delay time fixed by logical select is past, then VOUT changes from "L" to "H" to resume normal state. VSS (*7) VHYS is to avoid unstable VOUT state caused by rapid voltage change at nearby VDET. Delay time (*8): C-MOS output product (NJU7709) : When VDD less than VOPL, VOUT is free of the shaded region. (2) Description of Delay Time Delay time can be set by logical combination of D1 and D2 (see " LOGICAL TABLE OF DELAY TIME " on page2). [CAUTION] The specifications on this databook are only given for information , without any guarantee as regards either mistakes or omissions. The application circuits in this databook are described only to show representative usages of the product and not intended for the guarantee or permission of any right including the industrial rights. -8- Ver.2005-02-28 |
Price & Availability of NJU770809
 |
|
|
|
|
All Rights Reserved © IC-ON-LINE 2003 - 2022 |
| [Add Bookmark] [Contact Us] [Link exchange] [Privacy policy] |
|
Mirror Sites : [www.datasheet.hk]
[www.maxim4u.com] [www.ic-on-line.cn]
[www.ic-on-line.com] [www.ic-on-line.net]
[www.alldatasheet.com.cn]
[www.gdcy.com]
[www.gdcy.net] |