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LP2951DR
+Lista de MateriaisIC REG LIN POS ADJ 100MA 8SOIC
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FabricanteTexas Instruments
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Peça do Fabricante #LP2951DR
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Pacote SOIC-8
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Em Estoque2020
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Especificações
| Atributo | Valor |
| Package | Tape & Reel (TR),Cut Tape (CT),Bulk |
| ProductStatus | Active |
| OutputConfiguration | Positive |
| OutputType | Adjustable (Fixed) |
| NumberofRegulators | 1 |
| Voltage-Input(Max) | 30V |
| Voltage-Output(Min/Fixed) | 1.235V (5V) |
| Voltage-Output(Max) | 30V |
| VoltageDropout(Max) | 0.6V @ 100mA |
| Current-Output | 100mA |
| Current-Quiescent(Iq) | 120 µA |
| Current-Supply(Max) | 14 mA |
| ControlFeatures | Enable |
| ProtectionFeatures | Over Current, Over Temperature, Short Circuit |
| OperatingTemperature | -40°C ~ 125°C (TJ) |
| MountingType | Surface Mount |
| Package/Case | 8-SOIC (0.154, 3.90mm Width) |
Visão Geral
Description
Key characteristics of the LP2951DR include a low quiescent current, which helps in conserving battery life, and an output current capability of up to 100 mA. The device integrates additional functionalities such as an error flag to indicate output voltage status, a shutdown mode to reduce power consumption, and a thermal shutdown feature for protection against overheating.
Packaged in a SOIC (Small Outline Integrated Circuit) form, the LP2951DR is compact and suitable for surface-mount technology. Its high accuracy and reliability make it ideal for a wide range of applications, including portable electronics, microprocessor power supplies, and automotive systems.
Equivalent
1. MIC5205 - This is a similar low-dropout regulator with similar voltage output options.
2. LM2931 - Offers similar performance and pin configuration.
3. TLV1117 - Another LDO with comparable specifications.
4. UA78M series - Features similar voltage regulation capabilities.
5. MC78M05 - Standard LDO with similar characteristics.
When selecting an equivalent, ensure similar voltage, current ratings, and package type compatibility.
Features
1. Output Voltage: It offers a fixed output voltage of 5V, although adjustable versions are also available.
2. Low Dropout Voltage: Typically around 0.5V at a 100mA load, enabling efficient operation even with low input-output differential.
3. Current Limitation: It includes current limiting to protect against overcurrent conditions.
4. Thermal Protection: This feature helps prevent damage due to excessive heat by shutting down the regulator when a thermal overload is detected.
5. Low Quiescent Current: Consumes minimal current, making it ideal for battery-powered applications.
6. Noise Performance: It includes a bypass pin to improve noise performance for sensitive applications.
7. Shutdown Capability: An external control can be used to turn off the regulator, reducing power consumption to near zero.
8. Package: Available in small packages like SOIC-8, making it suitable for space-constrained designs.
These features make the LP2951DR suitable for a range of applications including battery-powered devices, portable electronics, and communication equipment.
Pinout
1. VOUT (Pin 1): Output voltage pin where the regulated voltage is provided.
2. FEEDBACK (Pin 2): Used for setting the output voltage via an external resistor divider.
3. SHUTDOWN (Pin 3): Controls the regulator on/off state; pulling this pin low disables the output.
4. GND (Pin 4): Ground pin for the device.
5. VIN (Pin 5): Input voltage pin where the unregulated voltage is supplied.
6. SENSE (Pin 6): Ensures the accurate regulation of the output voltage and is connected to the load.
7. NC (Pin 7): No connection; it can be left unconnected.
8. ERROR (Pin 8): Provides an error signal indicating when the output voltage falls below a certain threshold.
The LP2951DR is designed for applications requiring tight regulation and low dropout voltages, making it useful in battery-powered devices and precision regulation tasks.
Manufacturer
Application
1. Battery-Powered Devices: Efficient power management in portable electronics.
2. Microcontroller Power Supply: Provides stable voltage for microcontrollers and digital circuits.
3. Precision Voltage Regulation: Used in systems requiring precise voltage regulation and low output noise.
4. Embedded Systems: Powers embedded circuits in automotive and industrial control systems.
5. Sensor Circuits: Supplies stable voltage to sensors for accurate readings.
6. Communication Devices: Ensures reliable power for wireless modules and communication devices.
Its low quiescent current and adjustable output make it versatile for various low-power applications.