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參數(shù)資料
| 型號(hào)： | L4947PD |
| 廠商： | 意法半導(dǎo)體 |
| 英文描述： | 5V-0.5A Very Low Drop Regulator with Reset(帶復(fù)位低壓差穩(wěn)壓器) |
| 中文描述： | 5V的- 0.5A的非常低壓降穩(wěn)壓器具有復(fù)位（帶復(fù)位低壓差穩(wěn)壓器） |
| 文件頁數(shù)： | 1/6頁 |
| 文件大小： | 62K |
| 代理商： | L4947PD |
L4947PD
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 L4947PD is a monolithic integrated circuit in
HiPSO package specially designed to provide a
stabilized supply voltage for automotive and in-
dustrial electronic systems. Thanks to its very low
voltage drop, in automotive applications the
L4947PD 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 microproc-
essor 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 microproc-
essor.
Thisis advanced information on a new product now in development or undergoing evaluation. Details are subject tochange without notice.
1-20
December 1995
DUMP
PROTECT.
START
REF.
THERMAL
PROTECTION
RESET
CIRCUIT
ERROR
AMP.
OUTPUT
CURRENT
LIMITER
ANTI
SAT.
PNP OUTPUT
TRANSISTOR
D94AT106
17
INPUT
DELAY CAPACITOR
2
OUTPUT
3
RESET
OUTPUT
19
GROUND
1-20
BLOCK DIAGRAM
PowerSO20
ORDERING NUMBER: L4947PD
1/6
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| L4947 | Very Low Drop Voltage Regulator with Reset(帶復(fù)位的低壓差穩(wěn)壓器) |
| L4948 | Quad Voltage Regulator with Inhabit and Reset(帶禁止和復(fù)位的四通道穩(wěn)壓器) |
| L4949E | Multifunction Very Low Drop Voltage Regulator(多功能低壓差電壓穩(wěn)壓器) |
| L4952 | Voltage Regulator for Car Radio Applications(用于汽車收音機(jī)的電壓穩(wěn)壓器) |
| L4953K | Multifunction Voltage Regulator for Car Radio(用于汽車收音機(jī)的多功能電壓穩(wěn)壓器) |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| L4947PD013TR | 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 |
| 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 |
| 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 |
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