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參數(shù)資料
| 型號： | S-1121B35MC-N2UTFU |
| 元件分類： | 固定正電壓單路輸出LDO穩(wěn)壓器 |
| 英文描述： | 3.5 V FIXED POSITIVE LDO REGULATOR, 0.26 V DROPOUT, PDSO5 |
| 封裝： | HALOGEN AND LEAD FREE, SOT-23, 5 PIN |
| 文件頁數(shù)： | 6/25頁 |
| 文件大?。?/td> | 265K |
| 代理商： | S-1121B35MC-N2UTFU |
HIGH RIPPLE-REJECTION LOW DROPOUT CMOS VOLTAGE REGULATOR
S-1111/1121 Series
Rev.5.0_00
Seiko Instruments Inc.
14
Operation
1. Basic operation
Figure 11 shows the block diagram of the S-1111/1121 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 11
2. Output transistor
The S-1111/1121 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.
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| S-1121B36MC-N2VTFG | 制造商:Seiko Instruments Inc (SII) 功能描述:LINEAR LDO REG HI 50UA IQ 150MA IOUT |
| S-1121B37MC-N2WTFG | 制造商:Seiko Instruments Inc (SII) 功能描述:LINEAR LDO REG HI 50UA IQ 150MA IOUT |
| S-1121B38MC-N2XTFG | 制造商:SII 制造商全稱:Seiko Instruments Inc 功能描述:HIGH RIPPLE-REJECTION LOW DROPOUT |
| S-1121B39MC-N2YTFG | 制造商:SII 制造商全稱:Seiko Instruments Inc 功能描述:HIGH RIPPLE-REJECTION LOW DROPOUT |
| S-1121B40MC-N2ZTFG | 制造商:Seiko Instruments Inc (SII) 功能描述: |
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