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Features...........................................................1Applications.....................................................1Pin Assignment................................................1Block Diagram.................................................2Selection Guide...............................................3Output Configurations......................................4Advantage over the S-805 Series....................5Absolute Maximum Ratings.............................6Electrical Characteristics.................................7Test Circuits...................................................23Technical Terms............................................24Operation.......................................................26Dimensions....................................................28Taping............................................................29Magazine Dimensions...................................31Markings........................................................32Characteristics...............................................33Measuring Circuits.........................................36Application Circuit Examples.........................37Notes.............................................................39Frequently Asked Questions......................... 40
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drain and CMOS output (active “H” and “L”), both of which have vaproduct lineups. This series features much lower current consumand higher detection voltage accuracy than the S-805 Series. Sminiature package is added for the S-807 Series, the S-807XSeries. This small SOT-23-5 style package allows the designshrink the size of his finished product. Electrical specs for th807XXSX Series are the same as the standard S-807 Series. Oforms of the S-807XXSX Series are Nch open-drain and CMOS a“L”.
Features
Ultra-low current consumption
1.0 µA typ.(VDD=4.5 V)
High-precision detection voltage±2.4% Wide operating voltage range1.0 to 15 V Good hysteresis characteristics5% typ.
Wide operating temperature range-30°C to+80°C
Applications
Battery checker
Battery backup for memoriesPower failure detectorReset for microcomputer
Store signal detector for non- 3 output forms : Nch open-drain, CMOS output active H ,active L
TO-92, SOT-89-3 and SOT-23-5 package
Pin Assignment
Seiko Instruments Inc.
volatile RAM
2
Seiko Instruments Inc.
Series is packed on tape).S:Stick
T:Tape (T1 and T2 types are available depending on the direction of detectors on the tape.)**Please ask our sales person if you need another detection voltage product.
Seiko Instruments Inc.
2. Output configurations and their implementations
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shown in Figure 4. When using the S-805 Series,the service life can be detected over t1. When元器件交易网
using the S-807 Series, it can be detected over t2.This improvement in detection precision of the S-807 Series means that batteries can be used overmore of their service life.
t
Figure 4
1.2Detecting a power voltage at two points
It is usual for the CPU to detect the power voltageat two points, one to caution and the other to reset.The service life of battery may also be detected attwo points, one to caution and the other to requestimmediate replacement.
Two voltage values to be detected (No. 1 and No.2) do not cross and the voltage can be detectedcorrectly.
t
Figure 5
1.3Voltage drop when modifying detection voltage
If no voltage to be detected is suitable, the voltagecan be set higher in Nch open-drain output
products by using a resistor divider. (Example :when detecting 6V or 9V.)
When 8V is detected using the S-8054HN (a4V±5% device), the -Vdet tolerance becomes2×4.00×±0.05=0.8V (R1=R2). In constrast, the S-80740AN (a 4V±2.4% device) can hold down thetolerance to 2×4.00×±0.024=0.384V (R1=R2).
Figure 6
Seiko Instruments Inc.
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2.Others
2.1Low current consumption
The current consumption is half of that of a conventional voltage detection IC, so the battery service life can beprolonged.
2.2Wide operating voltage range
The maximum operating voltage of a conventional IC is 10 V. For the S-807 Series, the maximum detectable voltagehas been increased to 15 V.
Absolute Maximum Ratings
6(Unless otherwise specified : Ta=25°C)
Seiko Instruments Inc.
2. S-80716AL-AD-X, S-80716AN/AN-DD-X (Detection voltage : 1.561 to 1.639 V)
3.S-80717AL/AL-AE-X, S-80717AN/AN-DE-X, S-80717SN-DE-X (Detection voltage : 1.659 to 1.741 V)
Seiko Instruments Inc.
5. S-80718AH-BF-T1 (Detection voltage : 1.756 to 1.844 V)
6.
S-80719AL/AL-AG-X, S-80719AN/AN-DG-X
S-80719SL-AG-X, S-80719SN-DG-X (Detection voltage : 1.854 to 1.946 V)
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8.