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5962-9650502QXA PDF预览

5962-9650502QXA

更新时间： 2024-02-15 04:07:19
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德州仪器 - TI 稳压器
页数 文件大小 规格书
15页 391K
描述
LM2991QML Negative Low Dropout Adjustable Regulator

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5962-9650502QXA 技术参数

生命周期：Active零件包装代码：SOIC
包装说明：SOP,针数：16
Reach Compliance Code：unknownECCN代码：EAR99
HTS代码：8542.39.00.01风险等级：5.18
最大回动电压 1：1 VJESD-30 代码：R-GDSO-G16
长度：9.91 mm功能数量：1
端子数量：16工作温度TJ-Max：150 °C
最大输出电流 1：1 A最大输出电压 1：25 V
最小输出电压 1：2 V封装主体材料：CERAMIC, GLASS-SEALED
封装代码：SOP封装形状：RECTANGULAR
封装形式：SMALL OUTLINE认证状态：Qualified
调节器类型：ADJUSTABLE NEGATIVE SINGLE OUTPUT LDO REGULATOR筛选级别：MIL-PRF-38535 Class Q
座面最大高度：2.33 mm表面贴装：YES
技术：BIPOLAR端子形式：GULL WING
端子节距：1.27 mm端子位置：DUAL
宽度：6.35 mmBase Number Matches：1

5962-9650502QXA 数据手册

 浏览型号5962-9650502QXA的Datasheet PDF文件第6页浏览型号5962-9650502QXA的Datasheet PDF文件第7页浏览型号5962-9650502QXA的Datasheet PDF文件第8页浏览型号5962-9650502QXA的Datasheet PDF文件第10页浏览型号5962-9650502QXA的Datasheet PDF文件第11页浏览型号5962-9650502QXA的Datasheet PDF文件第12页 
LM2991QML  
www.ti.com  
SNVS392A –MARCH 2006–REVISED OCTOBER 2011  
MINIMUM LOAD  
A minimum load current of 500 μA is required for proper operation. The external resistor divider can provide the  
minimum load, with the resistor from the adjust pin to ground set to 2.4 kΩ.  
SETTING THE OUTPUT VOLTAGE  
The output voltage of the LM2991 is set externally by a resistor divider using the following equation:  
VOUT = VREF x (1 + R2/R1) − (IADJ x R2)  
where VREF = −1.21V. The output voltage can be programmed within the range of −3V to −24V, typically an even  
greater range of −2V to −25V. The adjust pin current is about 60 nA, causing a slight error in the output voltage.  
However, using resistors lower than 100 kΩ makes the adjust pin current negligible. For example, neglecting the  
adjust pin current, and setting R2 to 100 kΩ and VOUT to −5V, results in an output voltage error of only 0.16%.  
ON/OFF PIN  
The LM2991 regulator can be turned off by applying a TTL or CMOS level high signal to the ON/OFF pin (see  
Adjustable Current Sink Application).  
FORCING THE OUTPUT POSITIVE  
Due to an internal clamp circuit, the LM2991 can withstand positive voltages on its output. If the voltage source  
pulling the output positive is DC, the current must be limited to 1.5A. A current over 1.5A fed back into the  
LM2991 could damage the device. The LM2991 output can also withstand fast positive voltage transients up to  
26V, without any current limiting of the source. However, if the transients have a duration of over 1 mS, the  
output should be clamped with a Schottky diode to ground.  
Typical Applications  
VO = VRef (1 + R2/R1)  
*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.  
Copyright © 2006–2011, Texas Instruments Incorporated  
Submit Documentation Feedback  
9
Product Folder Links: LM2991QML  
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5962-9650502QXA 替代型号

型号 品牌 替代类型 描述 数据表
LM2991GW-QML TI

完全替代

 LM2991QML Negative Low Dropout Adjustable Regulator
RHFL7913KPA1 STMICROELECTRONICS

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