Texas Instruments LM3940IS-3.3
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- LM3940IS-3.3
- Texas Instruments
- IC REG LIN 3.3V 1A DDPAK/TO263-3
- PMIC - Voltage Regulators - Linear
- LM3940IS-3.3 Datasheet
- TO-263-4, D²Pak (3 Leads + Tab), TO-263AA
- Bulk
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What is LM3940IS-3.3
Texas Instruments Part Number LM3940IS-3.3（PMIC - Voltage Regulators - Linear）, developed and manufactured by Texas Instruments, distributed globally by Jinftry. We distribute various electronic components from world-renowned brands and provide one-stop services, making us a trusted global electronic component distributor.
LM3940IS-3.3 is one of the part numbers distributed by Jinftry, and you can learn about its specifications/configurations, package/case, Datasheet, and other information here. Electronic components are affected by supply and demand, and prices fluctuate frequently. If you have a demand, please do not hesitate to send us an RFQ or email us immediately [email protected] Please inquire about the real-time unit price, Data Code, Lead time, payment terms, and any other information you would like to know. We will do our best to provide you with a quotation and reply as soon as possible.
LM3940IS-3.3 Specifications
- Part NumberLM3940IS-3.3
- CategoryPMIC - Voltage Regulators - Linear
- ManufacturerTexas Instruments
- DescriptionIC REG LIN 3.3V 1A DDPAK/TO263-3
- PackageBulk
- Series-
- Operating Temperature-40°C ~ 125°C
- Mounting TypeSurface Mount
- Package / CaseTO-263-4, D²Pak (3 Leads + Tab), TO-263AA
- Supplier Device PackageDDPAK/TO-263-3
- Output TypeFixed
- Voltage - Output (Min/Fixed)3.3V
- Voltage - Output (Max)-
- Current - Output1A
- Output ConfigurationPositive
- Control Features-
- Voltage - Input (Max)7.5V
- Number of Regulators1
- Voltage Dropout (Max)0.2V @ 100mA
- Current - Quiescent (Iq)-
- Current - Supply (Max)-
- PSRR-
- Protection FeaturesOver Temperature, Short Circuit
Application of LM3940IS-3.3
LM3940IS-3.3 Datasheet
LM3940IS-3.3 Datasheet , Bulk,-40°C ~ 125°C,Surface Mount,TO-263-4, D²Pak (3 Leads + Tab), TO-263AA,DDPAK/TO-263-3,Fixed,3.3V,1A,Positive,7.5V,1,0.2V @ 100mA,Over Temperature, Short Circuit
LM3940IS-3.3 Classification
PMIC - Voltage Regulators - Linear
FAQ about PMIC - Voltage Regulators - Linear
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1. Do linear regulators need capacitors?
Linear regulators usually require capacitors.
The working principle and design requirements of linear regulators determine that they usually require capacitors to ensure stable operation. These capacitors are mainly used to filter and stabilize the output voltage, help reduce output ripple and noise, and thus improve the stability and reliability of the power supply.
Specifically:
1. Input and output capacitors: Linear regulators usually require one or more input capacitors and one output capacitor. These capacitors help smooth the input and output voltages, reduce voltage fluctuations, and thus provide a stable output voltage.
2. Power supply rejection capability: The power supply rejection capability of a linear regulator is an important indicator, which is related to whether it can effectively suppress unwanted signals and avoid interference with the output voltage. If the power supply rejection capability is poor, unnecessary signals may be left behind, affecting the purity of -
2. What are the alternatives to linear regulators?
Alternatives to linear regulators include Semiconductor HT7144S, K7805-2000R3, TPS70933DBVR, CLR6212, XC6220B331MR-G, LR7550-M, SGM2054XTD10G/TR, ME6213C33M5G, RS3236-3.3YF5, KL2036-2.2V, etc. These alternatives cover different package forms (such as SOT-23, SOP8, etc.) and output voltage and current specifications to meet the needs of different applications. For example, the HT7144S is a three-terminal linear regulator, while the TPS70933DBVR is an LDO (low dropout linear regulator) with lower output voltage and current specifications. CLR6212 and XC6220B331MR-G provide higher output current capabilities and are suitable for applications that require larger current outputs. LR7550-M and SGM2054XTD10G/TR provide specific voltage and current specifications to meet the needs of specific fields. ME6213C33M5G and RS3236-3.3YF5 are regulators with specific packaging forms, suitable for space-constrained application scenarios. KL2036-2.2V is a linear regulator with a lower output voltage, su
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3. What is the minimum input voltage of a linear regulator?
The minimum input voltage range of linear regulator varies from model and application.
For certain low -voltage lower -voltage regulators, its minimum input voltage range is usually 2.5V to 2.7V. This type of regulator design is used to power the internal LDO drive circuit and can drive PMOS FET to provide high output current. However, when the output voltage is lower than 1.8V and the output current is greater than 2.5A, the linear regulator with PMOS bypass components may be used for external heat dissipation due to additional air flow requirements and/or the heat generated by the regulator. It becomes inconvenient and the cost will increase.
For universal linear stabilizers, its input voltage range can be very wide. For example, some general -purpose linear regulators have 3V to 40V input voltage range. Even for models suitable for 24V systems, the input maximum voltage can reach 60V Then, then
In summary, the minimum input voltage of the linear regulator does not have a fixed st
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