L4947R中文資料意法半導(dǎo)體數(shù)據(jù)手冊(cè)PDF規(guī)格書(shū)
L4947R規(guī)格書(shū)詳情
DESCRIPTION
The L4947/L4947R is a monolithic integrated circuit in Pentawatt package specially designed to provide a stabilized supply voltage for automotive and industrial electronic systems. Thanks to its very low voltage drop, in automotive applications the L4947/L4947R can work correctly even during the cranking phase, when the battery voltage could fall as low as 6V. Furthermore, it incorporates a complete range of protection circuits against the dangerous overvoltages always present on the battery rail of the car. The reset function makes the device particularly suited to supply microprocessor based systems : a signal is available (after an externally programmable delay) to reset the microprocessor at power-on phase ; at power-off, this signal becomes low inhibiting the microprocessor.
■ 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
■ RESET FUNCTION
■ POWER-ON RESET DELAY PULSE DEFINED BY THE EXTERNAL CAPACITOR
■ + 80V LOAD DUMP PROTECTION
■ – 80V LOAD DUMP PROTECTION
■ REVERSE VOLTAGE PROTECTION
■ SHORT CIRCUIT PROTECTION AND THER MAL SHUT-DOWN (with hysteresis)
■ LOW START UP CURRENT
產(chǎn)品屬性
- 型號(hào)：
L4947R
- 功能描述：
低壓差穩(wěn)壓器 - LDO 5.0V 0.5A Positive
- 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 %
- 輸出類(lèi)型：
Fixed
- 最大工作溫度：
+ 125 C
- 安裝風(fēng)格：
SMD/SMT
- 封裝/箱體：
VQFN-20
| 供應(yīng)商 | 型號(hào) | 品牌 | 批號(hào) | 封裝 | 庫(kù)存 | 備注 | 價(jià)格 |
|---|---|---|---|---|---|---|---|
ST |
TO220-5 |
68900 |
原包原標(biāo)簽100%進(jìn)口原裝常備現(xiàn)貨! |
詢價(jià) | |||
ST |
2016+ |
ZIP |
6523 |
只做原裝正品現(xiàn)貨!或訂貨! |
詢價(jià) | ||
ST |
24+ |
TO-220-5V |
2987 |
只售原裝自家現(xiàn)貨!誠(chéng)信經(jīng)營(yíng)!歡迎來(lái)電! |
詢價(jià) | ||
MOT |
23+ |
SOP-8 |
7000 |
絕對(duì)全新原裝!現(xiàn)貨!特價(jià)!請(qǐng)放心訂購(gòu)! |
詢價(jià) | ||
STM |
ROHS |
56520 |
一級(jí)代理 原裝正品假一罰十價(jià)格優(yōu)勢(shì)長(zhǎng)期供貨 |
詢價(jià) | |||
STM |
22+ |
TO2205 |
5000 |
原裝現(xiàn)貨庫(kù)存.價(jià)格優(yōu)勢(shì)!! |
詢價(jià) | ||
N/A |
23+ |
SOP8 |
7750 |
全新原裝優(yōu)勢(shì) |
詢價(jià) | ||
MOT |
24+ |
SOP-8 |
6980 |
原裝現(xiàn)貨,可開(kāi)13%稅票 |
詢價(jià) | ||
ST |
23+ |
TO220-5 |
8560 |
受權(quán)代理!全新原裝現(xiàn)貨特價(jià)熱賣(mài)! |
詢價(jià) | ||
ST/意法 |
23+ |
TO-220 |
13000 |
原廠授權(quán)一級(jí)代理,專(zhuān)業(yè)海外優(yōu)勢(shì)訂貨,價(jià)格優(yōu)勢(shì)、品種 |
詢價(jià) |
