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參數資料
| 型號： | LM79L12ACZ |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 基準電壓源/電流源 |
| 英文描述： | 3-Terminal Negative Regulators |
| 中文描述： | 12 V FIXED NEGATIVE REGULATOR, PBCY3 |
| 封裝： | PLASTIC, TO-92, 3 PIN |
| 文件頁數： | 1/8頁 |
| 文件大?。?/td> | 619K |
| 代理商： | LM79L12ACZ |
LM320L/LM79LXXAC Series
3-Terminal Negative Regulators
General Description
The LM320L/LM79LXXAC dual marked series of 3-terminal
negative voltage regulators features fixed output voltages of
5V, 12V, and 15V with output current capabilities in
excess of 100mA. These devices were designed using the
latest computer techniques for optimizing the packaged IC
thermal/electrical performance. The LM79LXXAC series,
even when combined with a minimum output compensation
capacitor of 0.1μF, exhibits an excellent transient response,
a maximum line regulation of 0.07% V
O
/V, and a maximum
load regulation of 0.01% V
O
/mA.
The LM320L/LM79LXXAC series also includes, as self-
protection circuitry: safe operating area circuitry for output
transistor power dissipation limiting, a temperature indepen-
dent short circuit current limit for peak output current limiting,
and a thermal shutdown circuit to prevent excessive junction
temperature. Although designed primarily as fixed voltage
regulators, these devices may be combined with simple
external circuitry for boosted and/or adjustable voltages and
currents. The LM79LXXAC series is available in the 3-lead
TO-92 package, 8-lead SOIC package, and the 6-Bump
micro SMD package. The LM320L series is available in the
3-lead TO-92 package.
For output voltage other than 5V, 12V and 15V, the
LM137L series provides an output voltage range from 1.2V
to 47V.
Features
n
Preset output voltage error is less than
±
5% overload,
line and temperature
n
Specified at an output current of 100mA
n
Easily compensated with a small 0.1μF output
capacitor
n
Internal short-circuit, thermal and safe operating area
protection
n
Easily adjustable to higher output voltages
n
Maximum line regulation less than 0.07% V
OUT
/V
n
Maximum load regulation less than 0.01% V
OUT
/mA
n
See AN-1112 for micro SMD considerations
Typical Applications
Fixed Output Regulator
00774801
*Required if the regulator is located far from the power supply filter. A 1μF
aluminum electrolytic may be substituted.
*
*
Required for stability. A 1μF aluminum electrolytic may be substituted.
Adjustable Output Regulator
00774803
V
0
= 5V (5V/R1 + I
Q
)
R2,
5V/R1
>
3 I
Q
Connection Diagrams
6-Bump micro SMD
00774820
Bump Side Down
TO-92 Plastic Package (Z)
00774802
Bottom View
February 2005
L
2005 National Semiconductor Corporation
DS007748
www.national.com
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相關代理商/技術參數 |
參數描述 |
|---|---|
| LM79L12ACZ | 制造商:Texas Instruments 功能描述:IC REGULATOR -12V |
| LM79L12ACZ/LFT1 | 功能描述:線性穩壓器 - 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: 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 |
| LM79L12ACZ/LFT4 | 功能描述:線性穩壓器 - 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: 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 |
| LM79L12ACZ/LFT7 | 功能描述:線性穩壓器 - 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: 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 |
| LM79L12ACZ/NOPB | 功能描述:線性穩壓器 - 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: 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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