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參數(shù)資料
| 型號： | L4947R |
| 廠商： | 意法半導(dǎo)體 |
| 英文描述： | 5V-0.5A VERY LOW DROP REGULATOR WITH RESET |
| 中文描述： | 5V的- 0.5A的非常低，復(fù)位降調(diào)節(jié) |
| 文件頁數(shù)： | 1/6頁 |
| 文件大?。?/td> | 57K |
| 代理商： | L4947R |
L4947
L4947R
5V-0.5A VERY LOW DROP REGULATOR WITH RESET
PRECISE OUTPUT VOLTAGE (5V
±
4%)
OVER FULL TEMPERATURE RANGE
(– 40 / 125
°
C)
VERY LOW VOLTAGE DROP (0.75Vmax)
OVER FULL T RANGE
OUTPUT CURRENT UP TO 500mA
RESETFUNCTION
POWER-ON RESET DELAY PULSE DE-
FINED BY THE EXTERNAL CAPACITOR
+ 80V LOAD DUMPPROTECTION
– 80V LOAD DUMPPROTECTION
REVERSEVOLTAGEPROTECTION
SHORT CIRCUIT PROTECTION AND THER-
MAL SHUT-DOWN (with hysteresis)
LOW START UP CURRENT
DESCRIPTION
The L4947/L4947Ris a monolithic integrated cir-
cuit in Pentawatt package specially designed to
provide a stabilizedsupply voltage for automotive
and industrial electronic systems. Thanks to its
very low voltage drop, in automotive applications
the L4947/L4947Rcan work correctly even during
the cranking phase, when the battery voltage
could fall as low as 6V. Furthermore, it incorpo-
rates a complete range of protection circuits
against the dangerous overvoltages always pre-
sent on the battery rail of the car. The reset func-
tion makes the device particularly suited to supply
microprocessor based systems : a signal is avail-
able (after an externally programmable delay) to
reset the microprocessor at power-on phase ; at
power-off, this signal becomes low inhibiting the
microprocessor.
Thisis advanced information on a new product now in development or undergoing evaluation. Details are subject tochange without notice.
June 2000
BLOCK DIAGRAM
Pentawatt
ORDERING NUMBERS:
L4947
L4947R
1/6
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| L4953G | MULTIFUNCTION VOLTAGE REGULATOR FOR CAR RADIO |
| L4959 | MULTIFUNCTION VOLTAGE REGULATOR FOR HOME AUDIO |
| L4960 | Isolated Flyback Switching Regulator with 9V Output |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| L4948 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:QUAD VOLTAGE REGULATOR WITH INHIBIT AND RESET |
| L4949 | 制造商:ONSEMI 制造商全稱:ON Semiconductor 功能描述:AC-DC Offline Switching Controllers/Regulators |
| L4949_06 | 制造商:ONSEMI 制造商全稱:ON Semiconductor 功能描述:100 mA, 5.0 V, Low Dropout Voltage Regulator with Power−On Reset |
| L4949D | 功能描述:低壓差穩(wěn)壓器 - LDO 5V 100mA w/Power-On 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 |
| L4949DG | 功能描述:低壓差穩(wěn)壓器 - LDO 5V 100mA w/Power-On 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 |
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