參數(shù)資料
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): 21/38頁
文件大?。?/td> 493K
代理商: S-1009N32I-N4T1U
SUPER-LOW CURRENT CONSUMPTION SUPER HIGH-ACCURACY VOLTAGE DETECTOR WITH DELAY CIRCUIT (EXTERNAL DELAY TIME SETTING)
S-1009 Series
Rev.4.2_00
Seiko Instruments Inc.
28
3. Change of detection voltage
In the Nch open drain output products of S-1009 Series, users do not need a specific value of detection voltage, the
detection voltage can be changed by using a resistance divider or a diode, as seen in Figure 31 and 32.
In Figure 31, hysteresis width also changes.
(Nch open drain
ouput product)
RA
*1
OUT
VIN
VSS
VDD
S-1009N
RB
(RA
≤ 100 kΩ)
R
100 k
Ω
Detection voltage =
RA
+ RB
RB
VDET
Hysteresis width =
RA
+ RB
RB
VHYS
(Nch open drain
output product)
Vf1
OUT
VIN
VSS
VDD
S-1009N
R
100 k
Ω
Detection voltage = Vf1
+ (VDET)
*1. RA should be 100 k
Ω or less to prevent oscillation.
Caution If RA and RB are large, the hysteresis width
may also be larger than the value given by
the above equation due to the through-type
current (which flows slightly in an Nch open
drain product).
Figure 32
Figure 31
Caution 1. The above connection diagram and constant will not guarantee successful operation.
Perform thorough evaluation using the actual application to set the constant.
2. Note that the hysteresis width may be larger as the following equation shows when using the
above connections. Perform thorough evaluation using the actual application to set the
constant.
Maximum hysteresis width =
RA
+ RB
RB
VHYS + RA 20 μA
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