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參數資料
| 型號： | L4946B |
| 廠商： | 意法半導體 |
| 英文描述： | Quad Voltage Regulator with Inhibit and Reset(帶禁止和復位的四電壓穩壓器) |
| 中文描述： | 四電壓調節器的抑制和復位（帶禁止和復位的四電壓穩壓器） |
| 文件頁數： | 1/9頁 |
| 文件大小： | 104K |
| 代理商： | L4946B |
L4946B
QUAD VOLTAGE REGULATOR WITH INHIBIT AND RESET
ADVANCE DATA
4 OUTPUTS: 10V (125mA); 8.5V (250mA); 5V
(200mA); 5V (100mA)
10V AND 5V (100mA) OUTPUT ARE LOW
DROP
5V (100mA) ST-BY OUTPUT VOLTAGE
EARLY WARNING OUTPUT FOR SUPPLY
UNDERVOLTAGE (LVW)
THERMAL
SHUTDOWN
LIMITATION (FOLDBACK)
REVERSE BATTERY AND LOAD DUMP
PROTECTION
INHIBIT (ON/OFF) AND RESET FUNCTIONS
AND
CURRENT
DESCRIPTION
The L4946B is a quad output low drop voltage
regulator. The four outputs are a low drop 10V at
125mA (V
O1
), a 8.5V at 250mA (V
O2
), a 5V at
200mA (V
O3
) and a low drop 5V st-by line at
100mA (V
O4
).
The IC includes a monitoring circuit to warn if a
low voltage or no voltage condition is occurring.
V
O1,2,3
are offduring st-by mode.
The STCAP pin allows the battery voltage to de-
cay slowly giving the
μ
P time to store data. This
IC is designed for supplying microcomputer con-
trolled systems specially in automotive applica-
tions.
This is advancedinformation on a new product now in development orundergoing evaluation.Details are subject to change withoutnotice.
November 1994
BLOCK DIAGRAM
Multiwatt 11
ORDERING NUMBER:
L4946B
MULTIPOWER BCD TECHNOLOGY
L4946B
125mA
250mA
200mA
8.5V
1/9
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| L4946 | Quad Voltage Regulator with Inhibit and Reset(帶禁止和復位的四電壓穩壓器) |
| L4947PD | 5V-0.5A Very Low Drop Regulator with Reset(帶復位低壓差穩壓器) |
| L4947 | Very Low Drop Voltage Regulator with Reset(帶復位的低壓差穩壓器) |
| L4948 | Quad Voltage Regulator with Inhabit and Reset(帶禁止和復位的四通道穩壓器) |
| L4949E | Multifunction Very Low Drop Voltage Regulator(多功能低壓差電壓穩壓器) |
相關代理商/技術參數 |
參數描述 |
|---|---|
| L4946SQ | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Output Capacitor-Less Audio Subsystem with Programmable National 3D |
| L4947 | 功能描述:低壓差穩壓器 - LDO 5.0 Volt 0.5 Amp 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 |
| L4947H | 功能描述:低壓差穩壓器 - 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 |
| L4947L | 功能描述:低壓差穩壓器 - 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 |
| L4947PD | 功能描述:低壓差穩壓器 - 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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