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LM7812SX/NOPB

更新时间： 2024-11-26 13:01:03
品牌 Logo 应用领域
德州仪器 - TI 线性稳压器IC三端稳压器电源电路
页数 文件大小 规格书
28页 3020K
描述
1.5-A, 30-V, linear voltage regulator 3-DDPAK/TO-263 0 to 125

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LM7812SX/NOPB 技术参数

是否无铅： 不含铅是否Rohs认证： 符合
生命周期：Active包装说明：TO-263,
Reach Compliance Code：compliantFactory Lead Time：6 weeks
风险等级：1.63可调性：FIXED
标称回动电压 1：2 V最大输入电压：30 V
最小输入电压：7.5 VJESD-30 代码：R-PSSO-G3
JESD-609代码：e3长度：10.18 mm
湿度敏感等级：3功能数量：1
输出次数：1端子数量：3
工作温度TJ-Max：125 °C工作温度TJ-Min：
最大输出电流 1：1.5 A标称输出电压 1：12 V
封装主体材料：PLASTIC/EPOXY封装代码：TO-263
封装形状：RECTANGULAR封装形式：SMALL OUTLINE
峰值回流温度（摄氏度）：245调节器类型：FIXED POSITIVE SINGLE OUTPUT STANDARD REGULATOR
座面最大高度：4.83 mm表面贴装：YES
技术：BIPOLAR端子面层：Matte Tin (Sn)
端子形式：GULL WING端子节距：2.54 mm
端子位置：SINGLE处于峰值回流温度下的最长时间：NOT SPECIFIED
宽度：8.64 mmBase Number Matches：1

LM7812SX/NOPB 数据手册

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LM340-N, LM78xx  
www.ti.com  
SNOSBT0I –FEBRUARY 2000–REVISED MARCH 2013  
LM340-N/LM78XX Series 3-Terminal Positive Regulators  
Check for Samples: LM340-N, LM78xx  
1
FEATURES  
DESCRIPTION  
The LM140/LM340A/LM340-N/LM78XXC monolithic  
3-terminal positive voltage regulators employ internal  
current-limiting, thermal shutdown and safe-area  
compensation, making them essentially indestructible.  
If adequate heat sinking is provided, they can deliver  
over 1.0A output current. They are intended as fixed  
voltage regulators in a wide range of applications  
including local (on-card) regulation for elimination of  
noise and distribution problems associated with  
single-point regulation. In addition to use as fixed  
voltage regulators, these devices can be used with  
external components to obtain adjustable output  
voltages and currents.  
2
•
•
Complete Specifications at 1A Load  
Output Voltage Tolerances of ±2% at Tj = 25°C  
and ±4% Over the Temperature Range  
(LM340A)  
•
Line Regulation of 0.01% of VOUT/V of ΔVIN at  
1A Load (LM340A)  
•
•
•
•
•
Load Regulation of 0.3% of VOUT/A (LM340A)  
Internal Thermal Overload Protection  
Internal Short-circuit Current Limit  
Output Transistor Safe Area Protection  
P+ Product Enhancement Tested  
Considerable effort was expended to make the entire  
series of regulators easy to use and minimize the  
number of external components. It is not necessary to  
bypass the output, although this does improve  
transient response. Input bypassing is needed only if  
the regulator is located far from the filter capacitor of  
the power supply.  
The 5V, 12V, and 15V regulator options are available  
in the steel TO-3 power package. The  
LM340A/LM340-N/LM78XXC series is available in the  
TO-220 plastic power package, and the LM340-N-5.0  
is available in the SOT-223 package, as well as the  
LM340-5.0 and LM340-12 in the surface-mount  
DDPAK/TO-263 package.  
Typical Applications  
*Required if the regulator is located far from the power supply filter.  
**Although no output capacitor is needed for stability, it does help  
transient response. (If needed, use 0.1 μF, ceramic disc).  
VOUT = 5V + (5V/R1 + IQ) R2 5V/R1 > 3 IQ,  
load regulation (Lr) ≈ [(R1 + R2)/R1] (Lr of LM340-5).  
Figure 1. Fixed Output Regulator  
Figure 2. Adjustable Output Regulator  
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of  
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.  
All trademarks are the property of their respective owners.  
2
PRODUCTION DATA information is current as of publication date.  
Products conform to specifications per the terms of the Texas  
Instruments standard warranty. Production processing does not  
necessarily include testing of all parameters.  
Copyright © 2000–2013, Texas Instruments Incorporated  
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