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參數(shù)資料
| 型號： | S-80735SN-DZ-T1 |
| 元件分類： | 電源管理 |
| 英文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO5 |
| 封裝： | SOT-23, 5 PIN |
| 文件頁數(shù)： | 20/40頁 |
| 文件大?。?/td> | 454K |
| 代理商： | S-80735SN-DZ-T1 |
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HIGH-PRECISION VOLTAGE DETECTOR
S-807 Series
26
Seiko Instruments Inc.
n
n Operation
1. Basic operation
(1) When power supply voltage VDD is greater than the release voltage +VDET, the Nch transistor is OFF and the Pch
transistor ON, causing VDD (high) to appear at the output. With the Nch transistor of Figure 13 (a) off, the comparator
input voltage is (RB+RC)/(RA+RB+RC)
×V
DD.
(2) When power supply voltage VDD goes below +VDET, the output continues to maintain the power supply voltage level, as
long as VDD remains above the detection voltage -VDET. When VDD does fall below -VDET (A in Figure 14), the Nch
transistor goes ON, the Pch transistor goes OFF, and VSS appears at the output. With the Nch transistor of Figure 13
(a) ON, the comparator input voltage is RB/(RA+RB)
×V
DD.
(3) When VDD falls below the minimum operating voltage, the output becomes undefined. However, output will revert to VDD
if a pull-up has been employed.
(4) VSS will again be output when VDD rises above the minimum operating voltage. VSS will continue to be output even when
VDD surpasses -VDET, as long as it does not exceed the release voltage +VDET.
(5) When VDD rises above +VDET (B in Figure 14), the Nch transistor goes OFF, the Pch transistor goes ON, and VDD
appears at the output.
VDD
RB
VSS
VREF
RC
RA
(a)
-
+
OUT
Pch
Nch
*
Hysteresis
width
(VHYS)
A
B
VDD
VSS
OUT
VDD
VSS
(1)
(2)
(3)
(5)
(4)
Figure 14
Figure 13
Minimum operating
voltage
Release voltage(+VDET)
Detection voltage(-VDET)
Comparator
output
* Parasitic diode
DISCONTINUED
PRODUCT
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PDF描述 |
|---|---|
| S-80725SN-DN-T2 | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO5 |
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| S-812C44AUA-C2Y-T2 | 4.4 V FIXED POSITIVE LDO REGULATOR, 0.3 V DROPOUT, PSSO3 |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| S-80735SN-DZ-X | 制造商:SII 制造商全稱:Seiko Instruments Inc 功能描述:HIGH-PRECISION VOLTAGE DETECTOR |
| S-80736AL-A0-X | 制造商:SII 制造商全稱:Seiko Instruments Inc 功能描述:HIGH-PRECISION VOLTAGE DETECTOR |
| S-80736AN | 制造商:SII 制造商全稱:Seiko Instruments Inc 功能描述:HIGH-PRECISION VOLTAGE DETECTOR |
| S-80736AN-D0-X | 制造商:SII 制造商全稱:Seiko Instruments Inc 功能描述:HIGH-PRECISION VOLTAGE DETECTOR |
| S-80737AL | 制造商:SII 制造商全稱:Seiko Instruments Inc 功能描述:HIGH-PRECISION VOLTAGE DETECTOR |
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