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參數資料
| 型號： | LM309H |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 基準電壓源/電流源 |
| 英文描述： | 5-Volt Regulator |
| 中文描述： | 5.05 V FIXED POSITIVE REGULATOR, MBCY3 |
| 封裝： | METAL CAN, TO-39, 3 PIN |
| 文件頁數： | 1/8頁 |
| 文件大小： | 252K |
| 代理商： | LM309H |
LM109/LM309
5-Volt Regulator
General Description
The LM109 series are complete 5V regulators fabricated on
a single silicon chip. They are designed for local regulation
on digital logic cards, eliminating the distribution problems
association with single-point regulation. The devices are
available in two standard transistor packages. In the
solid-kovar TO-5 header, it can deliver output currents in ex-
cess of 200 mA, if adequate heat sinking is provided. With
the TO-3 power package, the available output current is
greater than 1A.
The regulators are essentially blowout proof. Current limiting
is included to limit the peak output current to a safe value. In
addition, thermal shutdown is provided to keep the IC from
overheating. If internal dissipation becomes too great, the
regulator will shut down to prevent excessive heating.
Considerable effort was expended to make these devices
easy to use and to minimize the number of external compo-
nents. It is not necessary to bypass the output, although this
does improve transient response somewhat. Input bypass-
ing is needed, however, if the regulator is located very far
from the filter capacitor of the power supply. Stability is also
achieved by methods that provide very good rejection of load
or line transients as are usually seen with TTL logic.
Although designed primarily as a fixed-voltage regulator, the
output of the LM109 series can be set to voltages above 5V,
as shown. It is also possible to use the circuits as the control
element in precision regulators, taking advantage of the
good current-handling capability and the thermal overload
protection.
Features
n
Specified to be compatible, worst case, with TTL and
DTL
n
Output current in excess of 1A
n
Internal thermal overload protection
n
No external components required
Schematic Diagram
DS007138-1
April 1998
L
1999 National Semiconductor Corporation
DS007138
www.national.com
相關PDF資料 |
PDF描述 |
|---|---|
| LM310 | Voltage Follower |
| LM3101M | Current/Voltage-Mode SMPS Controller |
| LM3101N | Current/Voltage-Mode SMPS Controller |
| LM310H | Voltage Follower |
| LM310J | Voltage Follower |
相關代理商/技術參數 |
參數描述 |
|---|---|
| LM309H | 制造商:Texas Instruments 功能描述:IC REGULATOR +5.0V |
| LM309H/A+ | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Positive Fixed Voltage Regulator |
| LM309H/NOPB | 功能描述:線性穩壓器 - 標準 +5V/500Ma Vreg 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: 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 |
| LM309HP+ | 制造商:Texas Instruments 功能描述:IC,VOLT REGULATOR,FIXED,+5V,BIPOLAR,CAN,4PIN,METAL |
| LM309H-P+ | 制造商:Texas Instruments 功能描述: |
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