Specifications
| Attribute | Value |
| Package | Bulk |
| ProductStatus | Obsolete |
| Function | Step-Down, Step-Up/Step-Down |
| OutputConfiguration | Positive |
| Topology | Buck, SEPIC |
| OutputType | Adjustable |
| NumberofOutputs | 1 |
| Voltage-Input(Min) | 3V |
| Voltage-Input(Max) | 25V |
| Voltage-Output(Min/Fixed) | 1.2V |
| Voltage-Output(Max) | 22.5V |
| Current-Output | 1.5A (Switch) |
| Frequency-Switching | 1.25MHz |
| SynchronousRectifier | No |
| OperatingTemperature | -40°C ~ 125°C (TJ) |
| MountingType | Surface Mount |
| Package/Case | 8-TSSOP, 8-MSOP (0.118, 3.00mm Width) Exposed Pad |
Overview
Description
The LT1767EMS8E is a high-efficiency, step-down DC/DC converter from Analog Devices (formerly Linear Technology). It is designed to deliver up to 1.2A of continuous output current with high efficiency, making it suitable for portable applications and other power-sensitive devices. The LT1767 operates from an input voltage range of 3.3V to 25V, which allows it to be used in a wide variety of power supply configurations.
Key features of the LT1767EMS8E include a fixed 1.25MHz switching frequency, which helps minimize external component size and enables the use of small inductors and capacitors. It also features low quiescent current and shutdown capability to enhance battery life in portable systems. The device employs a current mode control architecture, ensuring fast transient response and good loop stability.
With its compact MSOP-8 package, the LT1767 is well-suited for applications where board space is limited, such as in hand-held devices, battery-powered equipment, and distributed power systems.
Key features of the LT1767EMS8E include a fixed 1.25MHz switching frequency, which helps minimize external component size and enables the use of small inductors and capacitors. It also features low quiescent current and shutdown capability to enhance battery life in portable systems. The device employs a current mode control architecture, ensuring fast transient response and good loop stability.
With its compact MSOP-8 package, the LT1767 is well-suited for applications where board space is limited, such as in hand-held devices, battery-powered equipment, and distributed power systems.
Equivalent
The LT1767EMS8E is a step-down switching regulator. Equivalent products might include the LM2675 from Texas Instruments, the MC34063 from ON Semiconductor, and the TPS54331 from Texas Instruments. These alternatives offer similar functionalities but may have different specifications, so it’s important to compare performance characteristics like input voltage range, output current, and efficiency to ensure compatibility with your application. Always consult manufacturers' datasheets for detailed information.
Features
The LT1767EMS8E is a high-efficiency step-down switching regulator designed by Analog Devices. Key features include:
1. Wide Input Voltage Range: It operates efficiently with an input voltage range from 3.3V to 25V, making it versatile for various applications.
2. Output Voltage: It can provide a fixed output voltage of 3.3V or an adjustable output ranging from 1.25V to 15V.
3. High Efficiency: The device is designed for high-efficiency performance, reaching up to 92%, which is critical for battery-powered and energy-sensitive applications.
4. Current Capability: It can deliver up to 1.5A of output current, suitable for powering moderate loads.
5. Switching Frequency: Operates at a fixed 200kHz frequency, allowing for small external components and compact design.
6. Low Shutdown Current: The device features a low shutdown current of less than 1µA, which helps in conserving power when the regulator is not in operation.
7. Protection Features: Includes overcurrent protection and thermal shutdown to ensure safe operation under fault conditions.
These features make the LT1767EMS8E ideal for use in portable devices, telecommunications, and automotive applications.
1. Wide Input Voltage Range: It operates efficiently with an input voltage range from 3.3V to 25V, making it versatile for various applications.
2. Output Voltage: It can provide a fixed output voltage of 3.3V or an adjustable output ranging from 1.25V to 15V.
3. High Efficiency: The device is designed for high-efficiency performance, reaching up to 92%, which is critical for battery-powered and energy-sensitive applications.
4. Current Capability: It can deliver up to 1.5A of output current, suitable for powering moderate loads.
5. Switching Frequency: Operates at a fixed 200kHz frequency, allowing for small external components and compact design.
6. Low Shutdown Current: The device features a low shutdown current of less than 1µA, which helps in conserving power when the regulator is not in operation.
7. Protection Features: Includes overcurrent protection and thermal shutdown to ensure safe operation under fault conditions.
These features make the LT1767EMS8E ideal for use in portable devices, telecommunications, and automotive applications.
Pinout
The LT1767EMS8E is a step-down switching regulator. It comes in an 8-lead MSOP (Mini Small Outline Package) package. Here's a brief overview of its pin configuration and functions:
1. SW (Pin 1): Switch node. Connects to the inductor.
2. VIN (Pin 2): Input supply voltage.
3. BOOST (Pin 3): Bootstrapped driver supply for the switch.
4. GND (Pin 4): Ground.
5. FB (Pin 5): Feedback pin. Connects to the output voltage divider.
6. SHDN (Pin 6): Shutdown pin. A logic low puts the LT1767 in shutdown mode.
7. VC (Pin 7): Compensation pin for the error amplifier.
8. VSW (Pin 8): Switch pin. The output of the internal switch.
These pins are used to configure the regulator for efficient step-down voltage conversion, making it suitable for various applications needing compact power solutions.
1. SW (Pin 1): Switch node. Connects to the inductor.
2. VIN (Pin 2): Input supply voltage.
3. BOOST (Pin 3): Bootstrapped driver supply for the switch.
4. GND (Pin 4): Ground.
5. FB (Pin 5): Feedback pin. Connects to the output voltage divider.
6. SHDN (Pin 6): Shutdown pin. A logic low puts the LT1767 in shutdown mode.
7. VC (Pin 7): Compensation pin for the error amplifier.
8. VSW (Pin 8): Switch pin. The output of the internal switch.
These pins are used to configure the regulator for efficient step-down voltage conversion, making it suitable for various applications needing compact power solutions.
Manufacturer
The LT1767EMS8E is manufactured by Analog Devices, Inc. Analog Devices is a multinational company that specializes in the design and manufacturing of a wide range of semiconductor devices, with a focus on high-performance analog, mixed-signal, and digital signal processing (DSP) integrated circuits (ICs). The company serves a variety of industries, including communications, consumer electronics, industrial, automotive, and healthcare. Analog Devices is known for its innovation and leadership in creating advanced technologies that enhance the capabilities of electronic systems.
Application
The LT1767EMS8E is a high-efficiency step-down switching regulator designed for various applications. It is commonly used in battery-powered devices due to its ability to deliver high output current with minimal power loss. Key application areas include portable electronics, automotive power systems, distributed power systems, and industrial power supplies. Its compact size and high efficiency make it ideal for space-constrained applications requiring reliable power conversion. Additionally, it is suitable for telecom and networking equipment, where efficient voltage regulation is crucial. Its features, such as low quiescent current and wide input voltage range, enhance its versatility across different power supply designs.
Package
The LT1767EMS8E is a DC/DC converter IC packaged in an MSOP-8 (Mini Small Outline Package with 8 pins) form factor. This package type is compact, suitable for space-constrained applications, and supports surface mounting on printed circuit boards.
