參數(shù)資料
型號(hào): L4921
廠商: 意法半導(dǎo)體
英文描述: Very Lowdrop Adjustable Regulators(低壓差輸出可調(diào)穩(wěn)壓器)
中文描述: 非常Lowdrop可調(diào)穩(wěn)壓器(低壓差輸出可調(diào)穩(wěn)壓器)
文件頁數(shù): 4/7頁
文件大?。?/td> 73K
代理商: L4921
Figure 3 :
QuiescentCurrent vs. OutputCurrent
(V
o
=5V).
APPLICATION INFORMATION
1) TheL4920andL4921haveV
REF
1.25V.Then
theoutputvoltagecan beset downto V
REF
but
V
i
mustbe greaterthan 5.2V(T
j
= 25
°
C).
2) Astheregulatorreferencevoltagesource works
inclosedloop,thereferencevoltagemaychange
in foldbackcondition.
3) For applicationswith highV
l
, the total power
dissipationof the devicewithrespectto the ther-
malresistanceof thepackagemaybe limiting. The
totalpowerdissipation is :
P
tot
= V
i
l
q
+ (V
i
- V
o
) l
o
A typical curve giving the quiescentcurrent l
q
as a
functionof theoutputcurrent l
o
is shownin fig.3.
Figure 1 :
OutputVoltagevs. Temperature.
Figure2:
FoldbackCurrent Limiting.
L4920/L4921
4/7
相關(guān)PDF資料
PDF描述
L4922 Very Lowdrop Adjustable Regulators(帶復(fù)位的低壓差穩(wěn)壓器)
L4923 Low Drop Regulator With Reset and Inhibit(帶禁止和復(fù)位的低壓差穩(wěn)壓器)
L4925 Very Low Drop Voltage Regulator(低壓差穩(wěn)壓器)
L4931 Very Low Drop Voltage Regulators with Inhibit(帶禁止低壓差電壓穩(wěn)壓器)
L4936E ADVANCED VOLTAGE REGULATOR
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
L4922 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:VERY LOW DROP REGULATOR WITH RESET
L4923 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:WITH RESET AND INHIBIT 5V.1A VERY LOW DROP REGULATOR
L4925 功能描述:低壓差穩(wěn)壓器 - LDO 5V 0.5A w/Reset RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動(dòng)電壓(最大值):307 mV 輸出電流:1 A 負(fù)載調(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-20
L4925H 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Positive Fixed Voltage Regulator
L4925L 功能描述:低壓差穩(wěn)壓器 - LDO V Low-Drop Volt Reg RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動(dòng)電壓(最大值):307 mV 輸出電流:1 A 負(fù)載調(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-20