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LM317KSTEEL

更新时间： 2024-11-19 03:09:11
品牌 Logo 应用领域
美国国家半导体 - NSC 线性稳压器IC调节器电源电路输出元件局域网
页数 文件大小 规格书
26页 999K
描述
3-Terminal Adjustable Regulator

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中文翻译

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LM317KSTEEL 技术参数

是否Rohs认证： 不符合生命周期：Transferred
包装说明：, TO-204/-3Reach Compliance Code：compliant
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：5.05可调性：ADJUSTABLE
标称回动电压 1：3 V最大差分输入-输出电压：40 V
最小差分输入-输出电压：3 VJESD-30 代码：O-MBFM-P2
JESD-609代码：e0最大电网调整率 (%/V)：0.07
最大负载调整率 (%)：1.5%湿度敏感等级：1
功能数量：1输出次数：1
端子数量：2工作温度TJ-Max：125 °C
工作温度TJ-Min：最大输出电流 1：1.5 A
最大输出电压 1：37 V最小输出电压 1：1.2 V
封装主体材料：METAL封装等效代码：TO-204/-3
封装形状：ROUND封装形式：FLANGE MOUNT
峰值回流温度（摄氏度）：NOT SPECIFIED认证状态：Not Qualified
调节器类型：ADJUSTABLE POSITIVE SINGLE OUTPUT STANDARD REGULATOR子类别：Other Regulators
表面贴装：NO技术：BIPOLAR
端子面层：Tin/Lead (Sn/Pb)端子形式：PIN/PEG
端子位置：BOTTOM处于峰值回流温度下的最长时间：NOT SPECIFIED
Base Number Matches：1

LM317KSTEEL 数据手册

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April 2007  
LM117/LM317A/LM317  
3-Terminal Adjustable Regulator  
the maximum input to output differential is not exceeded, i.e.,  
avoid short-circuiting the output.  
General Description  
The LM117 series of adjustable 3-terminal positive voltage  
regulators is capable of supplying in excess of 1.5A over a  
1.2V to 37V output range. They are exceptionally easy to use  
and require only two external resistors to set the output volt-  
age. Further, both line and load regulation are better than  
standard fixed regulators. Also, the LM117 is packaged in  
standard transistor packages which are easily mounted and  
handled.  
Also, it makes an especially simple adjustable switching reg-  
ulator, a programmable output regulator, or by connecting a  
fixed resistor between the adjustment pin and output, the  
LM117 can be used as a precision current regulator. Supplies  
with electronic shutdown can be achieved by clamping the  
adjustment terminal to ground which programs the output to  
1.2V where most loads draw little current.  
For applications requiring greater output current, see LM150  
series (3A) and LM138 series (5A) data sheets. For the neg-  
ative complement, see LM137 series data sheet.  
In addition to higher performance than fixed regulators, the  
LM117 series offers full overload protection available only in  
IC's. Included on the chip are current limit, thermal overload  
protection and safe area protection. All overload protection  
circuitry remains fully functional even if the adjustment termi-  
nal is disconnected.  
Features  
Guaranteed 1% output voltage tolerance (LM317A)  
■
■
■
■
■
■
■
■
Guaranteed max. 0.01%/V line regulation (LM317A)  
Normally, no capacitors are needed unless the device is sit-  
uated more than 6 inches from the input filter capacitors in  
which case an input bypass is needed. An optional output ca-  
pacitor can be added to improve transient response. The  
adjustment terminal can be bypassed to achieve very high  
ripple rejection ratios which are difficult to achieve with stan-  
dard 3-terminal regulators.  
Guaranteed max. 0.3% load regulation (LM117)  
Guaranteed 1.5A output current  
Adjustable output down to 1.2V  
Current limit constant with temperature  
P+ Product Enhancement tested  
Besides replacing fixed regulators, the LM117 is useful in a  
wide variety of other applications. Since the regulator is “float-  
ing” and sees only the input-to-output differential voltage,  
supplies of several hundred volts can be regulated as long as  
80 dB ripple rejection  
Output is short-circuit protected  
■
LM117/LM317A/LM317 Package Options  
Typical Applications  
Part  
Output  
Suffix Package  
Number  
Current  
1.2V–25V Adjustable Regulator  
LM117, LM317  
LM317  
K
T
TO-3  
TO-220  
TO-263  
SOT-223  
TO-39  
1.5A  
1.5A  
1.5A  
1.0A  
0.5A  
0.5A  
0.5A  
LM317  
S
LM317A, LM317  
LM117, LM317A, LM317  
LM117  
EMP  
H
E
LCC  
LM317A, LM317  
MDT  
TO-252  
SOT-223 vs. TO-252 (D-Pak)  
Packages  
906301  
Full output current not available at high input-output voltages  
*Needed if device is more than 6 inches from filter capacitors.  
†Optional—improves transient response. Output capacitors in the range  
of 1μF to 1000μF of aluminum or tantalum electrolytic are commonly used  
to provide improved output impedance and rejection of transients.  
906354  
Scale 1:1  
© 2007 National Semiconductor Corporation  
9063  
www.national.com  
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