參數(shù)資料
型號(hào): S-1131B29UC-N4O-TFG
元件分類: 固定正電壓?jiǎn)温份敵鯨DO穩(wěn)壓器
英文描述: 2.9 V FIXED POSITIVE LDO REGULATOR, 0.34 V DROPOUT, PDSO5
封裝: LEAD FREE, SOT-89, 5 PIN
文件頁(yè)數(shù): 5/30頁(yè)
文件大?。?/td> 407K
代理商: S-1131B29UC-N4O-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.
相關(guān)PDF資料
PDF描述
S-1131B47UC-N5G-TFG 4.7 V FIXED POSITIVE LDO REGULATOR, 0.28 V DROPOUT, PDSO5
S-1131B38UC-N4X-TFG 3.8 V FIXED POSITIVE LDO REGULATOR, 0.28 V DROPOUT, PDSO5
S-1131B42UC-N5B-TFG 4.2 V FIXED POSITIVE LDO REGULATOR, 0.28 V DROPOUT, PDSO5
S-1131B33UC-N4S-TFG 3.3 V FIXED POSITIVE LDO REGULATOR, 0.34 V DROPOUT, PDSO5
S-1131B51UC-N5K-TFG 5.1 V FIXED POSITIVE LDO REGULATOR, 0.28 V DROPOUT, PDSO5
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