MAX1771ESA

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MAX1771ESA

IC REG CTRLR BST/BUCK-BST 8SOIC

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規格

Supplier Analog Devices Inc./Maxim Integrated
Package Tube
ProductStatus Active
OutputType Transistor Driver
Function Step-Up, Step-Up/Step-Down
OutputConfiguration Positive
Topology Boost, Buck-Boost
NumberofOutputs 1
OutputPhases 1
Voltage-Supply(Vcc/Vdd) 3V ~ 16.5V
Frequency-Switching 300kHz
DutyCycle(Max) 92%
SynchronousRectifier No
ClockSync No
ControlFeatures Enable
OperatingTemperature -40°C ~ 85°C (TA)
MountingType Surface Mount
Package/Case 8-SOIC (0.154, 3.90mm Width)

概述

Description

The MAX1771ESA is a high-efficiency, step-up (boost) DC-DC converter designed for applications requiring a stable output voltage from a lower input voltage. It features a wide input voltage range, typically from 0.9V to 5.5V, making it suitable for powering devices from single-cell batteries, including lithium-ion and alkaline cells.
This converter utilizes a current-mode control architecture, providing fast response to load changes and excellent line regulation. The MAX1771ESA can deliver output currents up to 200mA, with a maximum output voltage of 5.5V.
Key features include low quiescent current, which enhances battery life, and built-in thermal shutdown protection. The device operates at a switching frequency of 1.2 MHz, allowing for the use of small external components, which is beneficial for space-constrained applications.
Common applications include portable devices, RFID tags, and other battery-powered electronics requiring efficient power conversion. The MAX1771ESA is available in an 8-pin SOIC package, facilitating easy integration into various circuits.

Features

The MAX1771ESA is a high-efficiency, step-up (boost) DC-DC converter designed to convert low input voltages to higher output levels. Key features include:
1. Input Voltage Range: Operates from 2.5V to 16V.
2. Output Voltage: Adjustable output voltage up to 34V.
3. Efficiency: High efficiency (up to 93%) reduces heat and enhances battery life.
4. Switching Frequency: Fixed 1.2MHz operation allows for smaller external components.
5. Current Limit: Integrated current limit for overcurrent protection.
6. Soft-Start: Soft-start feature minimizes inrush current during startup.
7. Thermal Shutdown: Protects against overheating, enhancing reliability.
8. Package: Available in an 8-pin SOIC package for compact design.
This device is ideal for applications such as battery-powered equipment, portable devices, and RF power supplies, providing a dependable solution for voltage boosting.

Package

The MAX1771ESA is packaged in a 16-pin SOIC (Small Outline Integrated Circuit) format. This surface-mount package is designed for ease of integration in various electronic applications.

Pinout

The MAX1771ESA is a high-efficiency step-up (boost) DC-DC converter designed to convert a low input voltage to a higher output voltage. It has a pin count of 8.
### Pin Functions:
1. VIN: Input voltage supply (2.7V to 5.5V).
2. GND: Ground reference.
3. SW: Switch node, connects to the inductor.
4. VOUT: Output voltage, where the boosted voltage is provided.
5. COMP: Compensation network connection for stability.
6. FB: Feedback input to set the output voltage (typically adjustable).
7. EN: Enable pin to activate or deactivate the device.
8. LX: Inductor connection for energy storage and transfer.
The device is designed for applications requiring efficient power conversion, such as battery-powered devices.

Manufacturer

The MAX1771ESA is manufactured by Maxim Integrated, a company that specializes in designing and producing analog and mixed-signal integrated circuits. Founded in 1983, Maxim Integrated focuses on a wide range of applications, including power management, signal processing, and communications. In 2021, Maxim Integrated was acquired by Analog Devices, Inc., which further expanded its portfolio in the semiconductor industry. The company is known for its innovative solutions in power management, high-performance analog devices, and data converters, serving various markets such as automotive, industrial, and consumer electronics.

Application

The MAX1771ESA is primarily used in battery management systems, particularly for lithium-ion and lithium-polymer batteries. Its application areas include portable electronic devices, rechargeable battery packs, solar-powered systems, and power supply circuits. It features efficient DC-DC step-up voltage conversion, making it suitable for applications requiring low quiescent current and high efficiency in energy harvesting and management.

Equivalent

Equivalent products to the MAX1771ESA include the LTC1265, TPS61030, and MICREL MIC2288. These chips provide similar functionalities for step-up voltage regulation and can be used in applications requiring boost converters. Always verify specifications for voltage, current, and package compatibility before substituting.

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