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參數資料
| 型號： | L4921 |
| 廠商： | 意法半導體 |
| 英文描述： | Very Lowdrop Adjustable Regulators(低壓差輸出可調穩壓器) |
| 中文描述： | 非常Lowdrop可調穩壓器（低壓差輸出可調穩壓器） |
| 文件頁數： | 1/7頁 |
| 文件大小： | 73K |
| 代理商： | L4921 |
L4920
L4921
February 1989
VERY LOW DROP ADJUSTABLE REGULATORS
.
VERYLOWDROP VOLTAGE
.
ADJUSTABLE OUTPUT VOLTAGE FROM
1.25VTO 20V
.
400mAOUTPUT CURRENT
.
LOWQUIESCENTCURRENT
.
REVERSEVOLTAGEPROTECTION
.
+ 60/
60VTRANSIENT PEAKVOLTAGE
PROTECTION
.
SHORT CIRCUIT PROTECTION WITH FOLD-
BACK CHARACTERISTICS
.
THERMAL SHUT-DOWN
DESCRIPTION
The L4920and L4921areadjustablevoltageregu-
latorswitha verylowvoltagedrop(0.4Vtyp.at 0.4A
T
j
= 25
°
C), low quiescent current and comprehen-
siveon-chipprotection.
Thesedevicesareprotectedagainstloaddumpand
field decay transients, polarity reversal and over
heating.
A foldbackcurrentlimiterprotectsagainstloadshort
circuits.
Theoutputvoltageisadjustablethroughanexternal
divider from1.25V to 20V.The minimum operating
input voltageis 5.2V (T
J
= 25
°
C).
Pentawatt
ORDERINGNUMBERS :
L4920 (Pentawatt)
L4921(Minidip)
BLOCK DIAGRAM
Minidip
(4 + 4)
These regulators are designed for automotive, in-
dustrialand consumer applicationswhere low con-
sumptionis particularly important.
In batterybackupand standbyapplicationsthe low
consumptionof thesedevicesextendsbatterylife.
1/7
相關PDF資料 |
PDF描述 |
|---|---|
| L4922 | Very Lowdrop Adjustable Regulators(帶復位的低壓差穩壓器) |
| L4923 | Low Drop Regulator With Reset and Inhibit(帶禁止和復位的低壓差穩壓器) |
| L4925 | Very Low Drop Voltage Regulator(低壓差穩壓器) |
| L4931 | Very Low Drop Voltage Regulators with Inhibit(帶禁止低壓差電壓穩壓器) |
| L4936E | ADVANCED VOLTAGE REGULATOR |
相關代理商/技術參數 |
參數描述 |
|---|---|
| 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 回動電壓（最大值）:307 mV 輸出電流:1 A 負載調節:0.3 % 輸出端數量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風格: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 回動電壓（最大值）:307 mV 輸出電流:1 A 負載調節:0.3 % 輸出端數量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-20 |
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