參數(shù)資料
型號: TLVH431AQLPRE3
廠商: TEXAS INSTRUMENTS INC
元件分類: 基準電壓源/電流源
英文描述: 1-OUTPUT THREE TERM VOLTAGE REFERENCE, 1.24 V, PBCY3
封裝: ROHS COMPLIANT, PLASTIC, TO-226, TO-92, 3 PIN
文件頁數(shù): 15/50頁
文件大?。?/td> 990K
代理商: TLVH431AQLPRE3
P
+
P
VCC
VFB
Current
Sense
Gate Drive
GND
Controller
P
TLVH431
VO
3.3 V
VI
120 V
SLVS555I – NOVEMBER 2004 – REVISED SEPTEMBER 2009....................................................................................................................................... www.ti.com
APPLICATION INFORMATION
Figure 21. Flyback With Isolation Using TLVH431 and TLVH432 as Voltage Reference and Error Amplifier
Figure 21 shows the TLVH431 used in a 3.3-V isolated flyback supply. Output voltage VO can be as low as
reference voltage VREF (1.24 V). The output of the regulator plus the forward voltage drop of the optocoupler LED
(1.24 + 1.4 = 2.64 V) determine the minimum voltage that can be regulated in an isolated supply configuration.
Regulated voltage as low as 2.7 Vdc is possible in the topology shown in Figure 21.
22
Copyright 2004–2009, Texas Instruments Incorporated
相關(guān)PDF資料
PDF描述
TC151B4514EOA723 0.25 A SWITCHING REGULATOR, 50 kHz SWITCHING FREQ-MAX, PDSO8
TC151A5618EOA723 0.25 A SWITCHING REGULATOR, 50 kHz SWITCHING FREQ-MAX, PDSO8
TC151A2826EOA713 0.25 A SWITCHING REGULATOR, 50 kHz SWITCHING FREQ-MAX, PDSO8
TC151A4226EOA723 0.25 A SWITCHING REGULATOR, 50 kHz SWITCHING FREQ-MAX, PDSO8
TC151A5549EOA713 0.25 A SWITCHING REGULATOR, 50 kHz SWITCHING FREQ-MAX, PDSO8
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TLVH431AQPK 功能描述:基準電壓& 基準電流 Lo-Vtg Adj Precision Shunt Regulator RoHS:否 制造商:STMicroelectronics 產(chǎn)品:Voltage References 拓撲結(jié)構(gòu):Shunt References 參考類型:Programmable 輸出電壓:1.24 V to 18 V 初始準確度:0.25 % 平均溫度系數(shù)(典型值):100 PPM / C 串聯(lián) VREF - 輸入電壓(最大值): 串聯(lián) VREF - 輸入電壓(最小值): 分流電流(最大值):60 mA 最大工作溫度:+ 125 C 封裝 / 箱體:SOT-23-3L 封裝:Reel
TLVH431AQPKG3 功能描述:基準電壓& 基準電流 Lo-Vtg Adj Precision Shunt Regulator RoHS:否 制造商:STMicroelectronics 產(chǎn)品:Voltage References 拓撲結(jié)構(gòu):Shunt References 參考類型:Programmable 輸出電壓:1.24 V to 18 V 初始準確度:0.25 % 平均溫度系數(shù)(典型值):100 PPM / C 串聯(lián) VREF - 輸入電壓(最大值): 串聯(lián) VREF - 輸入電壓(最小值): 分流電流(最大值):60 mA 最大工作溫度:+ 125 C 封裝 / 箱體:SOT-23-3L 封裝:Reel
TLVH431B 制造商:TI 制造商全稱:Texas Instruments 功能描述:LOW-VOLTAGE ADJUSTABLE PRECISION SHUNT REGULATORS
TLVH431BCDBVR 功能描述:基準電壓& 基準電流 Lo-Vtg Adj Precision Shunt Regulator RoHS:否 制造商:STMicroelectronics 產(chǎn)品:Voltage References 拓撲結(jié)構(gòu):Shunt References 參考類型:Programmable 輸出電壓:1.24 V to 18 V 初始準確度:0.25 % 平均溫度系數(shù)(典型值):100 PPM / C 串聯(lián) VREF - 輸入電壓(最大值): 串聯(lián) VREF - 輸入電壓(最小值): 分流電流(最大值):60 mA 最大工作溫度:+ 125 C 封裝 / 箱體:SOT-23-3L 封裝:Reel
TLVH431BCDBVRE4 功能描述:基準電壓& 基準電流 Lo-Vtg Adj Precision Shunt Regulator RoHS:否 制造商:STMicroelectronics 產(chǎn)品:Voltage References 拓撲結(jié)構(gòu):Shunt References 參考類型:Programmable 輸出電壓:1.24 V to 18 V 初始準確度:0.25 % 平均溫度系數(shù)(典型值):100 PPM / C 串聯(lián) VREF - 輸入電壓(最大值): 串聯(lián) VREF - 輸入電壓(最小值): 分流電流(最大值):60 mA 最大工作溫度:+ 125 C 封裝 / 箱體:SOT-23-3L 封裝:Reel