參數(shù)資料
型號(hào)： S-1170B42UC-OUBTFU
元件分類： 固定正電壓?jiǎn)温份敵鯨DO穩(wěn)壓器
英文描述： 4.2 V FIXED POSITIVE LDO REGULATOR, 0.18 V DROPOUT, PDSO5
封裝： HALOGEN FREE AND LEAD FREE, SOT-89, 5 PIN
文件頁數(shù)： 6/30頁
文件大小： 311K
代理商： S-1170B42UC-OUBTFU
HIGH RIPPLE-REJECTION LOW DROPOUT HIGH OUTPUT CURRENT CMOS VOLTAGE REGULATOR
S-1170 Series
Rev.4.0_00
Seiko Instruments Inc.
14
Operation
1. Basic operation
Figure 12 shows the block diagram of the S-1170 Series.
The error amplifier compares the reference voltage (Vref) with Vfb, which is the output voltage resistance-
divided by feedback resistors Rs and Rf. It supplies the output transistor with the gate voltage necessary
to ensure a certain output voltage free of any fluctuations of input voltage and temperature.
Reference voltage
circuit
VOUT
*1
*1.
Parasitic diode
VSS
VIN
Rs
Rf
Error
amplifier
Current
supply
Vref
+
Vfb
Figure 12
2. Output transistor
The S-1170 Series uses a low on-resistance P-channel MOS FET as the output transistor.
Be sure that VOUT does not exceed VIN + 0.3 V to prevent the voltage regulator from being damaged due
to inverse current flowing from VOUT pin through a parasitic diode to VIN pin.
相關(guān)PDF資料
PDF描述
S-1170B46PD-OUFTFS 4.6 V FIXED POSITIVE LDO REGULATOR, 0.18 V DROPOUT, PDSO6
S-1170B46UC-OUFTFU 4.6 V FIXED POSITIVE LDO REGULATOR, 0.18 V DROPOUT, PDSO5
S-1170B41PD-OUATFG 4.1 V FIXED POSITIVE LDO REGULATOR, 0.18 V DROPOUT, PDSO6
S-1170B41UC-OUATFG 4.1 V FIXED POSITIVE LDO REGULATOR, 0.18 V DROPOUT, PDSO5
S-1170B45PD-OUETFG 4.5 V FIXED POSITIVE LDO REGULATOR, 0.18 V DROPOUT, PDSO6
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
S-1170B43PD-OUCTFG 制造商:Seiko Instruments Inc (SII) 功能描述:REG LDO LIN FIX POS 4.3V 0.8A 6PIN HSON(A) - Tape and Reel 制造商:Seiko Instruments Inc (SII) 功能描述:IC REG LDO 4.3V 0.8A 6HSON
S-1170B43UC-OUCTFG 功能描述:低壓差穩(wěn)壓器 - LDO Linear LDO Reg Hi 80uA Iq 800mA 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: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-20
S-1170B44PD-OUDTFG 制造商:Seiko Instruments Inc (SII) 功能描述:REG LDO LIN FIX POS 4.4V 0.8A 6PIN HSON(A) - Tape and Reel 制造商:Seiko Instruments Inc (SII) 功能描述:IC REG LDO 4.4V 0.8A 6HSON
S-1170B44UC-OUDTFG 功能描述:低壓差穩(wěn)壓器 - LDO Linear LDO Reg Hi 80uA Iq 800mA 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: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-20
S-1170B45PD-OUETFG 制造商:Seiko Instruments Inc (SII) 功能描述:REG LDO LIN FIX POS 4.5V 0.8A 6PIN HSON(A) - Tape and Reel 制造商:Seiko Instruments Inc (SII) 功能描述:IC REG LDO 4.5V 0.8A 6HSON
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