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LM2990S-12 PDF预览

LM2990S-12

更新时间： 2024-11-23 12:18:39
品牌 Logo 应用领域
德州仪器 - TI 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
20页 2002K
描述
LM2990 Negative Low Dropout Regulator

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LM2990S-12 技术参数

生命周期：Not Recommended零件包装代码：D2PAK
包装说明：TO-263, SMSIP3H,.55TB针数：4
Reach Compliance Code：not_compliantECCN代码：EAR99
HTS代码：8542.39.00.01Factory Lead Time：1 week
风险等级：7.35可调性：FIXED
最大回动电压 1：1 V标称回动电压 1：0.6 V
最大绝对输入电压：26 V最大输入电压：26 V
最小输入电压：13 VJESD-30 代码：R-PSSO-G3
JESD-609代码：e0长度：10.16 mm
最大电网调整率：0.06%最大负载调整率：0.05%
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：-40 °C
最大输出电流 1：1 A最大输出电压 1：12.6 V
最小输出电压 1：11.4 V标称输出电压 1：12 V
封装主体材料：PLASTIC/EPOXY封装代码：TO-263
封装等效代码：SMSIP3H,.55TB封装形状：RECTANGULAR
封装形式：SMALL OUTLINE包装方法：TUBE
峰值回流温度（摄氏度）：235认证状态：Not Qualified
调节器类型：FIXED NEGATIVE SINGLE OUTPUT LDO REGULATOR座面最大高度：4.79 mm
子类别：Other Regulators表面贴装：YES
技术：BIPOLAR端子面层：Tin/Lead (Sn/Pb)
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
最大电压容差：5%宽度：8.64 mm
Base Number Matches：1

LM2990S-12 数据手册

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LM2990  
www.ti.com  
SNVS093D –JUNE 1999–REVISED APRIL 2013  
LM2990 Negative Low Dropout Regulator  
Check for Samples: LM2990  
1
FEATURES  
DESCRIPTION  
The LM2990 is a three-terminal, low dropout, 1  
ampere negative voltage regulator available with fixed  
output voltages of −5, −5.2, −12, and −15V.  
2
•
5% Output Accuracy over Entire Operating  
Range  
•
•
•
•
•
•
Output Current in Excess of 1A  
The LM2990 uses new circuit design techniques to  
provide low dropout and low quiescent current. The  
dropout voltage at 1A load current is typically 0.6V  
and an ensured worst-case maximum of 1V over the  
entire operating temperature range. The quiescent  
current is typically 1 mA with 1A load current and an  
input-output voltage differential greater than 3V. A  
unique circuit design of the internal bias supply limits  
the quiescent current to only 9 mA (typical) when the  
regulator is in the dropout mode (VOUT − VIN ≤ 3V).  
Output voltage accuracy is ensured to ±5% over load,  
and temperature extremes.  
Dropout Voltage Typically 0.6V at 1A Load  
Low Quiescent Current  
Internal Short Circuit Current Limit  
Internal Thermal Shutdown with Hysteresis  
Functional Complement to the LM2940 Series  
APPLICATIONS  
•
•
•
Post Switcher Regulator  
Local, On-Card, Regulation  
Battery Operated Equipment  
The LM2990 is short-circuit proof, and thermal  
shutdown includes hysteresis to enhance the  
reliability of the device when overloaded for an  
extended period of time. The LM2990 is available in a  
3-lead package and is rated for operation over the  
automotive temperature range of −40°C to +125°C.  
Typical Application  
*Required if the regulator is located further than 6 inches from the power supply filter capacitors. A 1 μF solid  
tantalum or a 10 μF aluminum electrolytic capacitor is recommended.  
**Required for stability. Must be at least a 10 μF aluminum electrolytic or a 1 μF solid tantalum to maintain stability.  
May be increased without bound to maintain regulation during transients. Locate the capacitor as close as possible to  
the regulator. The equivalent series resistance (ESR) is critical, and should be less than 10Ω over the same operating  
temperature range as the 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 © 1999–2013, Texas Instruments Incorporated  
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LM2990S-12 替代型号

型号 品牌 替代类型 描述 数据表
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