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參數資料
| 型號： | L4943 |
| 廠商： | 意法半導體 |
| 英文描述： | MULTIFUNCTION VOLTAGE REGULATOR FOR CAR RADIO |
| 中文描述： | 多功能穩壓器以便汽車收音機 |
| 文件頁數： | 1/6頁 |
| 文件大小： | 113K |
| 代理商： | L4943 |
3 PROGRAMMABLE OUTPUTS:
3 TO 11V (500mA);
3 TO 11V (500mA);
3 TO 7V (500mA) STANDBY
OUT1 AND OUT2 WITH INDEPENDENT EN-
ABLE CONTROL FOR STAND-BY MODE
0.4A HIGH SIDE DRIVER
LOAD DUMP PROTECTION
THERMAL SHUTDOWN
DESCRIPTION
The L4943 contains a triple voltage regulator and
a high side driver.
In stand-by the output is active as long as possi-
ble even when in thermal shutdown or under any
other fault conditions.
The STCAP pin allows the use of a reserve sup-
ply capacitor that will hold enough energy for the
5V Stand-by line to allow the
μ
P to store data.
December 2000
D97AU668B
GEN
REF
V
MEM
(3÷7)V 0.5A
V
ADJ1
(3÷11)V 0.5A
V
ADJ2
(3÷11)V 0.5A
HSD
LOAD
DUMP
V
MEM
V
MEM_feed
V
ADJ1
V
ADJ1_feed
V
ADJ2
V
ADJ2_feed
4
ST CAP
EN1
EN2
V
S
P-GND
S-GND
TAB
FILTER CAP
14
HSD
9
13
7
10
11
12
1
2
5
8
3
6
BLOCK DIAGRAM
Multiwatt 15
ORDERING NUMBER:
L4943
L4943
MULTIFUNCTION VOLTAGE REGULATOR FOR CAR RADIO
1/6
相關PDF資料 |
PDF描述 |
|---|---|
| L4947R | 5V-0.5A VERY LOW DROP REGULATOR WITH RESET |
| L4949ED | MULTIFUNCTION VERY LOW DROP VOLTAGE REGULATOR |
| L4949EP | MULTIFUNCTION VERY LOW DROP VOLTAGE REGULATOR |
| L4953G | MULTIFUNCTION VOLTAGE REGULATOR FOR CAR RADIO |
| L4959 | MULTIFUNCTION VOLTAGE REGULATOR FOR HOME AUDIO |
相關代理商/技術參數 |
參數描述 |
|---|---|
| L4945 | 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 |
| L4946 | 制造商:STMicroelectronics 功能描述:REG LDO LIN FIX POS 10V/8V/5V/5V 0.125A/0.25A/0.2A/0.1A 11PI - Bulk |
| L4946B | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:QUAD VOLTAGE REGULATOR WITH INHIBIT AND RESET |
| 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 |
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