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LM117HVQML

更新时间： 2024-09-29 05:41:59
品牌 Logo 应用领域
美国国家半导体 - NSC 稳压器
页数 文件大小 规格书
24页 459K
描述
3-Terminal Adjustable Regulator

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LM117HVQML 数据手册

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February 13, 2008  
LM117HVQML  
3-Terminal Adjustable Regulator  
long as the maximum input to output differential is not ex-  
ceeded, i.e. do not short the output to ground.  
General Description  
The LM117HV are adjustable 3-terminal positive voltage reg-  
ulators capable of supplying either 0.5A or 1.5A over a 1.2V  
to 57V output range. They are exceptionally easy to use and  
require only two external resistors to set the output voltage.  
Further, both line and load regulation are better than standard  
fixed regulators.  
Also, it makes an especially simple adjustable switching reg-  
ulator, a programmable output regulator, or by connecting a  
fixed resistor between the adjustment and output, the  
LM117HV can be used as a precision current regulator. Sup-  
plies 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.  
In addition to higher performance than fixed regulators, the  
LM117HV 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  
Available with radiation guarantee  
■
Total Ionizing Dose  
100 krad(Si)  
100 krad(Si)  
—
—
Low Dose Rate Qualified  
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 rejections ratios which are difficult to achieve with stan-  
dard 3-terminal regulators.  
Adjustable output down to 1.2V  
Guaranteed 0.5A or 1.5A output current  
Line regulation typically 0.01%/V  
Load regulation typically 0.1%  
■
■
■
■
■
■
■
■
Current limit constant with temperature  
Eliminates the need to stock many voltages  
80 dB ripple rejection  
Besides replacing fixed regulators, the LM117HV is useful in  
a wide variety of other applications. Since the regulator is  
“floating” and sees only the input-to-output differential volt-  
age, supplies of several hundred volts can be regulated as  
Output is short-circuit protected  
Ordering Information  
NS Part Number  
LM117HVH/883  
SMD Part Number  
NS Package Number  
Package Description  
3LD T0–39 Metal Can  
H03A  
H03A  
H03A  
LM117HVH-QML  
5962-0722901QXA  
3LD T0–39 Metal Can  
3LD T0–39 Metal Can  
LM117HVHRQMLV (Note 7)  
5962R0722901VXA  
100 krad(Si)  
LM117HVHRLQMLV (Note 8)  
Low Dose Rate Qualified  
5962R0722961VXA  
100 krad(Si)  
H03A  
3LD T0–39 Metal Can  
LM117HVK/883  
K02C  
K02C  
2LD T0–3 Low Profile Metal Can  
2LD T0–3 Low Profile Metal Can  
16LD Ceramic SOIC  
LM117HVK-QML  
5962-0722903QYA  
5962-0722901QZA  
LM117HVWG-QML  
LM117HVWGRQMLV (Note 7)  
WG16A  
WG16A  
5962R0722901VZA  
100 krad(Si)  
16LD Ceramic SOIC  
LM117HVWGRLQMLV (Note 8)  
Low Dose Rate Qualified  
5962R0722961VZA  
100 krad(Si)  
WG16A  
16LD Ceramic SOIC  
© 2008 National Semiconductor Corporation  
201438  
www.national.com  
1234567...24

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