參數(shù)資料
型號(hào)： S-817B50AY-T
元件分類(lèi)： 固定正電壓?jiǎn)温份敵鯨DO穩(wěn)壓器
英文描述： 5 V FIXED POSITIVE LDO REGULATOR, 0.25 V DROPOUT, PBCY3
封裝： TO-92, 3 PIN
文件頁(yè)數(shù)： 9/50頁(yè)
文件大小： 882K
代理商： S-817B50AY-T
SUPER-SMALL PACKAGE CMOS VOLTAGE REGULATOR
Rev.3.0_00
S-817 Series
Seiko Instruments Inc.
17
The S-817 Series can be configured as a constant current circuit. Refer to Figure 15 and 16.
Constant amperage (IO) is calculated using the following equation (VOUT(E): Effective output voltage):
IO
= (VOUT(E) ÷ RL) +ISS.
Please note that it is impossible to set constant amperage IO in case of circuit (1) of Figure 15 to the
value exceeding the drive ability of the S-817.
However, circuit (2) of Figure 16 is an example to set constant amperage to the value exceeding the
drive ability of the S-817. Circuit (2) incorporates a current boosting circuit. The maximum input voltage
of the constant current circuit is the value obtained by adding 10 V to voltage of the device (VO). It is not
recommended to attach a capacitor between the S-817 power source VIN and VSS pin or between
output VOUT and VSS pin because rush current flows at powering on. An example of input voltage
between VIN and VO in circuit (2) vs. IO current characteristics
VIN, VO pins, Input voltage - IO current
S-817A11ANB, S-817B11AMC, Tr : 2SK1213Y, R1 : 1 k
, VO=2 V
0.00
0.10
0.20
0.30
0.40
0.50
0.60
1.4
1.6
1.8
2
2.2
2.4
VIN
VO(V)
IO
(A
)
RL
=1.83
2.2
2.75
3.67
5.5
11
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
S-817B50AY-X 制造商:SII 制造商全稱(chēng):Seiko Instruments Inc 功能描述:SUPER-SMALL PACKAGE CMOS VOLTAGE REGULATOR
S-817B50AY-X-G 制造商:SII 制造商全稱(chēng):Seiko Instruments Inc 功能描述:SUPER-SMALL PACKAGE CMOS VOLTAGE REGULATOR
S-817B50AY-Z 制造商:未知廠家 制造商全稱(chēng):未知廠家 功能描述:Analog IC
S-817B51AMC-CXO-T2 制造商:SII 制造商全稱(chēng):Seiko Instruments Inc 功能描述:SUPER-SMALL PACKAGE CMOS VOLTAGE REGULATOR
S-817B51AMC-CXOT2G 功能描述:低壓差穩(wěn)壓器 - LDO Linear LDO regulator 1.2uA Iq 75mA Iout RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動(dòng)電壓（最大值）:307 mV 輸出電流:1 A 負(fù)載調(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類(lèi)型:Fixed 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-20
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