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參數資料
| 型號： | LM9074 |
| 廠商： | National Semiconductor Corporation |
| 英文描述： | Rheostat; Series:MP; Power Rating:300W; Resistance Max:200ohm; Terminal Type:Lugs; Resistance:200ohm; Type:Rheostat |
| 中文描述： | 系統電壓調節(jié)與保持活動開/關 |
| 文件頁數： | 5/9頁 |
| 文件大小： | 193K |
| 代理商： | LM9074 |
Control Logic Truth Table
ON/OFF
Input
L
↑
H
↓
↓
↑
H
L
Keep-Alive
Input
X
X
X
H
L
L
X
L
Output
Voltage
0V
5V
5V
0V
5V
5V
Reset
Output
L
↑
after delay
H
L
H
H
L
L
Operating Condition
Low quiescent current standby (OFF) condition
Output turns ON
Normal ON condition
Output turns OFF
Output kept ON by Keep-Alive Input
Output remains ON (or turns ON)
Output pulled out of regulation, reset flag generated
Output latches OFF
V
OUT
≥
300 mV
V
OUT
≤
4V
Block Diagram
Application Information
The LM9074 voltage regulator has been optimized for use in
microprocessor based automotive systems. Several unique
design features have been incorporated to address many
FMEA (Failure Mode Effects Analysis) concerns for fail-safe
system performance.
FAULT TOLERANT FEATURES
While not specifically guaranteed due to production testing
limitations, the LM9074 has been tested and shown to con-
tinue to provide a regulated output and, not generate an er-
roneous system reset signal while subjected to high levels of
RF electric field energy (up to 300 V/m signal strength over
a 2 MHz to 400 MHz frequency range). This is very important
in vehicle safety related applications where the system must
continue to operate normally. To maintain this immunity to
RFI the output bypass capacitor is important (47 μF is rec-
ommended).
This regulator is suitable for applications where continuous
connection to the battery is required (Refer to the Typical Ap-
plication Circuit ). ON/OFF control of the regulator and sys-
tem can be accomplished by switching the ON/OFF input to
the battery or ignition supply V
supply through a SPST
switch. If this input becomes open circuited, an internal
pull-down resistor ensures that the regulator turns OFF.
When the regulator is switched OFF the current load on the
DS101305-22
L
www.national.com
5
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相關代理商/技術參數 |
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| LM9074EP | 制造商:TI 制造商全稱:Texas Instruments 功能描述:Enhanced Plastic System Voltage Regulator with Keep-Alive ON/OFF Control |
| LM9074M | 功能描述:線性穩(wěn)壓器 - 標準 RoHS:否 制造商:STMicroelectronics 輸出類型: 極性: 輸出電壓:1.8 V 輸出電流:150 mA 負載調節(jié): 最大輸入電壓:5.5 V 線路調整率: 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:SOT-323-5L |
| LM9074M/NOPB | 功能描述:線性穩(wěn)壓器 - 標準 RoHS:否 制造商:STMicroelectronics 輸出類型: 極性: 輸出電壓:1.8 V 輸出電流:150 mA 負載調節(jié): 最大輸入電壓:5.5 V 線路調整率: 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:SOT-323-5L |
| LM9074MEP | 制造商:TI 制造商全稱:Texas Instruments 功能描述:Enhanced Plastic System Voltage Regulator with Keep-Alive ON/OFF Control |
| LM9074MX | 功能描述:線性穩(wěn)壓器 - 標準 RoHS:否 制造商:STMicroelectronics 輸出類型: 極性: 輸出電壓:1.8 V 輸出電流:150 mA 負載調節(jié): 最大輸入電壓:5.5 V 線路調整率: 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:SOT-323-5L |
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