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LM137H PDF预览

LM137H

更新时间: 2024-09-22 22:51:59
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
页数 文件大小 规格书
12页 834K
描述
3-Terminal Adjustable Negative Regulators

LM137H 技术参数

是否Rohs认证:符合生命周期:Transferred
包装说明:TO-39, CAN3/4,.2Reach Compliance Code:compliant
ECCN代码:EAR99HTS代码:8542.39.00.01
风险等级:5.04Is Samacsys:N
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 V
JESD-30 代码:O-MBCY-W3JESD-609代码:e4
最大电网调整率 (%/V):0.05最大负载调整率 (%):1%
湿度敏感等级:1功能数量:1
输出次数:1端子数量:3
工作温度TJ-Max:150 °C工作温度TJ-Min:-55 °C
最高工作温度:150 °C最低工作温度:-55 °C
最大输出电流 1:0.2 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
封装代码:TO-39封装等效代码:CAN3/4,.2
封装形状:ROUND封装形式:CYLINDRICAL
峰值回流温度(摄氏度):NOT APPLICABLE认证状态:Not Qualified
调节器类型:ADJUSTABLE NEGATIVE SINGLE OUTPUT STANDARD REGULATOR子类别:Other Regulators
表面贴装:NO技术:BIPOLAR
端子面层:Nickel/Gold (Ni/Au)端子形式:WIRE
端子位置:BOTTOM处于峰值回流温度下的最长时间:NOT APPLICABLE
Base Number Matches:1

LM137H 数据手册

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November 2004  
LM137/LM337  
3-Terminal Adjustable Negative Regulators  
n Excellent thermal regulation, 0.002%/W  
n 77 dB ripple rejection  
General Description  
The LM137/LM337 are adjustable 3-terminal negative volt-  
age regulators capable of supplying in excess of −1.5A over  
an output voltage range of −1.2V to −37V. These regulators  
are exceptionally easy to apply, requiring only 2 external  
resistors to set the output voltage and 1 output capacitor for  
frequency compensation. The circuit design has been opti-  
mized for excellent regulation and low thermal transients.  
Further, the LM137 series features internal current limiting,  
thermal shutdown and safe-area compensation, making  
them virtually blowout-proof against overloads.  
n Excellent rejection of thermal transients  
n 50 ppm/˚C temperature coefficient  
n Temperature-independent current limit  
n Internal thermal overload protection  
n P+ Product Enhancement tested  
n Standard 3-lead transistor package  
n Output is short circuit protected  
LM137 Series Packages and Power Capability  
The LM137/LM337 serve a wide variety of applications in-  
cluding local on-card regulation, programmable-output volt-  
age regulation or precision current regulation. The LM137/  
LM337 are ideal complements to the LM117/LM317  
adjustable positive regulators.  
Rated  
Power  
Dissipation  
20W  
Design  
Device  
Package  
Load  
Current  
1.5A  
LM137/337 TO-3 (K)  
TO-39 (H)  
2W  
0.5A  
Features  
n Output voltage adjustable from −1.2V to −37V  
n 1.5A output current guaranteed, −55˚C to +150˚C  
n Line regulation typically 0.01%/V  
n Load regulation typically 0.3%  
LM337  
LM337  
TO-220 (T)  
SOT-223  
(MP)  
15W  
1.5A  
2W  
1A  
Typical Applications  
Comparison between SOT-223 and  
D-Pak (TO-252) Packages  
Adjustable Negative Voltage Regulator  
00906731  
Scale 1:1  
00906701  
Full output current not available at high input-output voltages  
C1 = 1 µF solid tantalum or 10 µF aluminum electrolytic required for  
stability  
*C2 = 1 µF solid tantalum is required only if regulator is more than 4" from  
power-supply filter capacitor  
Output capacitors in the range of 1 µF to 1000 µF of aluminum or tantalum  
electrolytic are commonly used to provide improved output impedance and  
rejection of transients  
© 2004 National Semiconductor Corporation  
DS009067  
www.national.com  

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