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LM2776DBVR

Name: LM2776DBVR
Rating: 4.7 (12 reviews)

IC REG CHARGE PUMP INV SOT23

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製造商。部分 #LM2776DBVR
包 SOT-23 (DBV)-6
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規格

Package	Tape & Reel (TR),Cut Tape (CT)
ProductStatus	Active
Function	Ratiometric
OutputConfiguration	Negative
Topology	Charge Pump
OutputType	Fixed
NumberofOutputs	1
Voltage-Input(Min)	2.7V
Voltage-Input(Max)	5.5V
Voltage-Output(Min/Fixed)	-Vin
Current-Output	200mA
Frequency-Switching	2MHz
SynchronousRectifier	No
OperatingTemperature	-40°C ~ 85°C (TA)
MountingType	Surface Mount
Package/Case	SOT-23-6

概述

Description

The LM2776DBVR is a charge pump voltage inverter designed by Texas Instruments. It is commonly used in applications requiring a negative voltage supply. The device efficiently generates a negative output voltage from a positive input voltage. It features a low noise and fixed frequency operation, making it suitable for sensitive electronics. The LM2776DBVR operates with an input voltage range typically between 2.7V and 5.5V and provides an output voltage of -Vin.
Key features include a shutdown mode to save power, low quiescent current, and a high operational efficiency. It is packaged in a small SOT-23-6 footprint, which is ideal for compact designs. The device is often used in applications like LCD biasing, sensor biasing, and other portable electronic devices that require a negative supply voltage. Its simple integration and minimal external components make it a popular choice for designers looking to implement a negative voltage rail in a compact and efficient manner.

Features

The LM2776DBVR is a switched-capacitor voltage inverter designed by Texas Instruments. It primarily features a low noise, fixed negative output voltage from a positive input voltage supply, suitable for applications requiring a negative voltage rail. Key specifications include a typical input voltage range of 2.7V to 5.5V and an output voltage of approximately -Vin. The device delivers up to 200 mA of output current. It is designed for efficiency, with a typical quiescent current of only 37 µA, making it suitable for battery-powered applications. The LM2776 offers a low output voltage ripple and fast transient response due to its switched-capacitor architecture. It includes short-circuit protection and thermal shutdown features to enhance reliability and safety. The device is housed in a compact SOT-23 package, making it ideal for space-constrained designs.

Package

The LM2776DBVR is a switched capacitor voltage inverter IC from Texas Instruments. It comes in a SOT-23-6 package, which is a small outline transistor package featuring six leads. This compact package is suitable for space-constrained applications.

Pinout

The LM2776DBVR is an integrated circuit by Texas Instruments designed to invert the input voltage. It is typically used in applications that require a negative voltage supply. The device comes in an SOT-23-6 package, which means it has 6 pins.
The pin functions are as follows:
1. VOUT: Output voltage pin. Provides the inverted voltage.
2. CAP+: Positive terminal for the flying capacitor. Used for charge pumping.
3. GND: Ground pin. Common return path for the circuit.
4. CAP-: Negative terminal for the flying capacitor. Used for charge pumping.
5. VIN: Input voltage pin. Connects to the positive supply voltage.
6. EN: Enable pin. Used to turn the device on or off; logic high enables the device.
This device is often used in applications like operational amplifier biasing, LCD displays, and portable equipment where a low-power, negative voltage rail is needed.

Manufacturer

The LM2776DBVR is manufactured by Texas Instruments, an American technology company. Texas Instruments is known for designing and manufacturing semiconductors and various integrated circuits, which are essential components in a wide range of electronic devices. The company serves various industries, including automotive, industrial, personal electronics, and communications equipment.

Application

The LM2776DBVR is a charge pump voltage inverter typically used in applications requiring a negative voltage supply from a positive input. Its primary application areas include powering operational amplifiers, data converters, and interface circuits in portable devices, smartphones, and other battery-powered electronics. Its compact size and efficient design make it ideal for space-constrained applications.

Equivalent

The LM2776DBVR is a switched capacitor voltage inverter from Texas Instruments. Equivalent products from other manufacturers could include the LTC1983-5 from Analog Devices, the MAX1698 from Maxim Integrated, and the TPS60400 from Texas Instruments themselves. These alternatives offer similar functionalities as negative voltage generators, although specifications like voltage range, current output, and efficiency should be compared closely to ensure compatibility with your application.