參數(shù)資料
型號(hào)： MIC4043BM4
廠商： MICREL INC
元件分類： 基準(zhǔn)電壓源/電流源
英文描述： FPGA - 100000 SYSTEM GATE 2.5 VOLT - NOT RECOMMENDED for NEW DESIGN
中文描述： 1-OUTPUT THREE TERM VOLTAGE REFERENCE, 1.245 V, PDSO4
封裝： SOT-143, 4 PIN
文件頁(yè)數(shù)： 5/12頁(yè)
文件大小： 3293K
代理商： MIC4043BM4
May 2000
5
MIC4043
MIC4043
Micrel
Functional Diagram
SNK
FB
IN
V
REF
1.245V
GND
MIC4043
Functional Description
The MIC4043 combines a G
m
amplifier, precision 1.245V
reference, and a pass transistor in a single package.
The operation of the MIC4043 is similar to conventional shunt
regulators such as the industry standard
’
431. In a closed
loop system, the MIC4043 maintains the desired feedback
voltage at the FB pin by sinking current onto the SNK pin
proportional to the error voltage at the FB pin. The ratio of sink
current to error voltage is the transconductance of the device.
Reference
The MIC4043 uses a
high-side reference
. External voltage
dividers providing feedback to the MIC4043 will be
inverted
when compared to those used with
’
431-equivalent devices.
Behavior
The external feedback voltage is compared to the internal
high-side 1.245V reference.
If the feedback voltage, V
FB
, is less than V
IN
–
V
REF
, the
amplifier provides no drive to the sink transistor. If the
feedback voltages is greater than V
IN
–
V
REF
, the amplifier
drives the pass transistor which sinks current to ground.
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MIC4043BM4 TR 功能描述:IC REG SHUNT LOW VOLT SOT-143 RoHS:否 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - 專用型 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:2,000 系列:- 應(yīng)用:電源，ICERA E400，E450 輸入電壓:4.1 V ~ 5.5 V 輸出數(shù):10 輸出電壓:可編程 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:42-WFBGA，WLCSP 供應(yīng)商設(shè)備封裝:42-WLP 包裝:帶卷 (TR)
MIC4043YM4 制造商:MIC 制造商全稱:MIC GROUP RECTIFIERS 功能描述:Low-Voltage Secondary-Side Shunt Regulator Final Information
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