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| 型號(hào)： | S-1009N32I-N4T1U |
| 元件分類： | 電源管理 |
| 英文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO4 |
| 封裝： | HALOGEN AND LEAD FREE, SC-82AB, 4 PIN |
| 文件頁數(shù)： | 9/38頁 |
| 文件大?。?/td> | 493K |
| 代理商： | S-1009N32I-N4T1U |
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SUPER-LOW CURRENT CONSUMPTION SUPER HIGH-ACCURACY VOLTAGE DETECTOR WITH DELAY CIRCUIT (EXTERNAL DELAY TIME SETTING)
Rev.4.2_00
S-1009 Series
Seiko Instruments Inc.
17
2. Hysteresis width (VHYS)
The hysteresis width is the voltage difference between the detection voltage and the release voltage (The voltage at
point B
The voltage at point A = VHYS in Figure 14). Setting the hysteresis width between the detection voltage
and the release voltage, prevents malfunction caused by noise on the input voltage.
3. Delay Time (tD)
The delay time in the S-1009 Series is a period from the input voltage to the VDD pin exceeding the release voltage
(
+VDET) until the output from the OUT pin inverts. The delay time changes according to the external capacitor (CD).
tD
VDD
OUT
V
+VDET
Figure 20 Delay time
4. Through-type current
Through-type current is a current that flows instantaneously at the time of detection and release of a voltage
detector. The through-type current is large in CMOS output products, small in Nch open drain output products.
5. Oscillation
In applications where a resistor is connected to the voltage detector input (Figure 21), taking a CMOS active “L”
product for example, the through-type current which is generated when the output goes from “L” to “H” (release)
causes a voltage drop equal to [through-type current]
× [input resistance] across the resistor. When the input
voltage drops below the detection voltage (
VDET) as a result, the output voltage goes to low level. In this state, the
through-type current stops and its resultant voltage drop disappears, and the output goes from “L” to “H”. The
through-type current is then generated again, a voltage drop appears, and repeating the process finally induces
oscillation.
OUT
VSS
VDD
RB
RA
VIN
S-1009C
Figure 21 An example for bad implementation due to detection voltage change
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| S-1009N33I-M5T1U | 制造商:Seiko Instruments Inc (SII) 功能描述:VOLTAGE DETECTOR ULTRA LOW IQ |
| S-1009N33I-N4T1U | 功能描述:VOLTAGE SUPERVISORY 制造商:ablic u.s.a. inc. 系列:S-1009 包裝:剪切帶（CT） 零件狀態(tài):在售 類型:電壓檢測器 受監(jiān)控電壓數(shù):1 輸出:開路漏極或開路集電極 復(fù)位:低有效 復(fù)位超時(shí):- 電壓 - 閾值:3.3V 工作溫度:-40°C ~ 85°C（TA） 安裝類型:表面貼裝 封裝/外殼:SC-82A，SOT-343 供應(yīng)商器件封裝:SC-82AB 標(biāo)準(zhǔn)包裝:1 |
| S-1009N34I-M5T1U | 功能描述:VOLTAGE SUPERVISORY 制造商:ablic u.s.a. inc. 系列:* 包裝:剪切帶（CT） 零件狀態(tài):在售 安裝類型:表面貼裝 封裝/外殼:SC-74A，SOT-753 供應(yīng)商器件封裝:SOT-23-5 標(biāo)準(zhǔn)包裝:1 |
| S-1009N35I-I4T1U | 功能描述:VOLTAGE SUPERVISORY 制造商:ablic u.s.a. inc. 系列:S-1009 包裝:剪切帶（CT） 零件狀態(tài):在售 類型:電壓檢測器 受監(jiān)控電壓數(shù):1 輸出:開路漏極或開路集電極 復(fù)位:低有效 復(fù)位超時(shí):- 電壓 - 閾值:3.5V 工作溫度:-40°C ~ 85°C（TA） 安裝類型:表面貼裝 封裝/外殼:4-SMD，扁平引線 供應(yīng)商器件封裝:SNT-4A 標(biāo)準(zhǔn)包裝:1 |
| S-1009N35I-M5T1U | 功能描述:VOLTAGE SUPERVISORY 制造商:ablic u.s.a. inc. 系列:* 包裝:剪切帶（CT） 零件狀態(tài):在售 安裝類型:表面貼裝 封裝/外殼:SC-74A，SOT-753 供應(yīng)商器件封裝:SOT-23-5 標(biāo)準(zhǔn)包裝:1 |
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