参数资料
型号: S-1131B55UA-N5O-TFG
元件分类: 固定正电压单路输出LDO稳压器
英文描述: 5.5 V FIXED POSITIVE LDO REGULATOR, 0.28 V DROPOUT, PSSO3
封装: LEAD FREE, SOT-89, 3 PIN
文件页数: 5/30页
文件大小: 407K
代理商: S-1131B55UA-N5O-TFG
HIGH RIPPLE-REJECTION LOW DROPOUT MIDDLE OUTPUT CURRENT CMOS VOLTAGE REGULATOR
Rev.4.0_00
S-1131 Series
Seiko Instruments Inc.
13
Operation
1. Basic operation
Figure 13 shows the block diagram of the S-1131 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 13
2. Output transistor
The S-1131 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.
相关PDF资料
PDF描述
S-1131B50UA-N5J-TFG 5 V FIXED POSITIVE LDO REGULATOR, 0.28 V DROPOUT, PSSO3
S-1131B25UA-N4K-TFG 2.5 V FIXED POSITIVE LDO REGULATOR, 0.49 V DROPOUT, PSSO3
S-1131B20UA-N4F-TFG 2 V FIXED POSITIVE LDO REGULATOR, 0.6 V DROPOUT, PSSO3
S-1131B39UA-N4Y-TFG 3.9 V FIXED POSITIVE LDO REGULATOR, 0.28 V DROPOUT, PSSO3
S-1131B43UA-N5C-TFG 4.3 V FIXED POSITIVE LDO REGULATOR, 0.28 V DROPOUT, PSSO3
相关代理商/技术参数
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S-1132 制造商:SII 制造商全称:Seiko Instruments Inc 功能描述:HIGH RIPPLE-REJECTION LOW DROPOUT MIDDLE OUTPUT CURRENT CMOS VOLTAGE REGULATOR
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