MAX1771CSA

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MAX1771CSA

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IC REG CTRLR BST/BUCK-BST 8SOIC

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Especificações

Atributo Valor
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 0°C ~ 70°C (TA)
MountingType Surface Mount
Package/Case 8-SOIC (0.154, 3.90mm Width)

Visão Geral

Description

The MAX1771CSA is a high-efficiency, step-up DC-DC converter integrated circuit designed by Maxim Integrated. It is utilized for boosting lower input voltages to higher output voltages and is particularly suitable for battery-powered devices due to its efficient energy conversion. The chip operates with a wide input voltage range, typically from 2V to 16.5V, and can deliver an output voltage up to 300V, depending on the external components used.
Key features include a high switching frequency of up to 300kHz, which allows for the use of smaller external components, reducing overall circuit size. The MAX1771CSA also features a low quiescent current, making it energy-efficient by minimizing power consumption when the device is in standby mode.
The IC incorporates protection mechanisms such as overcurrent protection and thermal shutdown, enhancing its reliability in various applications. Typical applications include LCD bias supplies, portable devices, and other applications requiring efficient voltage boosting. Its compact 8-pin SO package makes it suitable for space-constrained designs.

Equivalent

Equivalent products to the MAX1771CSA, a step-up DC-DC converter, include:
1. LT1306 from Analog Devices.
2. MC34063 from ON Semiconductor.
3. LM2577 from Texas Instruments.
4. NCP1400 from ON Semiconductor.
5. TPS61040 from Texas Instruments.
These alternatives have varying specifications, so it's important to verify compatibility with your specific application requirements.

Features

The MAX1771CSA is a high-efficiency, step-up DC-DC converter designed to boost low voltages to a higher level. Key features include:
1. Wide Input Voltage Range: Operates from 2V to 16.5V, making it versatile for various power sources.

2. High Efficiency: Achieves efficiencies up to 92%, optimizing power usage.
3. Low Quiescent Current: Consumes only 110µA, extending battery life in portable applications.
4. Adjustable Output Voltage: Supports an output voltage range from 2V to 16.5V, adjustable via external resistors.
5. Internal 3A N-Channel MOSFET: Provides robust performance with minimal external components.
6. Fixed Frequency PWM Operation: Ensures stability and predictable performance at a frequency of 300kHz.
7. Current Mode Control: Enhances transient response and loop stability.
8. Soft Start Capability: Reduces inrush current during startup, protecting the circuit.
9. Overload Protection: Safeguards against excessive current conditions.
10. Compact Package: Available in an 8-pin SOIC package, suitable for space-constrained applications.
These features make the MAX1771CSA ideal for battery-powered and portable devices needing efficient voltage conversion.

Pinout

The MAX1771CSA is a high-efficiency, step-up DC-DC converter IC designed for boosting voltage efficiently. It typically comes in an 8-pin SOIC (Small Outline Integrated Circuit) package. Here is a brief overview of its pin functions:
1. Pin 1 (REF): Reference voltage output. It provides a 1.5V reference voltage.
2. Pin 2 (CS): Current sense input. It monitors the inductor current.
3. Pin 3 (GND): Ground. It serves as the reference point for the circuit.
4. Pin 4 (FB): Feedback input. It is used to regulate the output voltage.
5. Pin 5 (SHDN): Shutdown input. Allows the IC to be turned on or off.
6. Pin 6 (EXT): External N-channel MOSFET gate driver. Drives the gate of an external MOSFET.
7. Pin 7 (V+): Input voltage supply. Powers the IC.
8. Pin 8 (LX): Inductor connection point. Connects to the inductor and the external diode.
The MAX1771CSA is primarily used for applications that require step-up voltage conversion with high efficiency and low power consumption.

Manufacturer

The MAX1771CSA is manufactured by Maxim Integrated, which is a company specializing in the design and manufacture of analog and mixed-signal integrated circuits. Maxim Integrated provides solutions for a wide range of applications, including industrial, communications, automotive, consumer, and computing markets. The company is known for its expertise in power management, interface, sensors, communications, and other analog devices, which are critical for various electronic systems.
As of 2021, Maxim Integrated became a part of Analog Devices, Inc. (ADI) after a merger. Analog Devices is a leading global semiconductor company that also focuses on analog, mixed-signal, and digital signal processing technologies. Together, they provide comprehensive semiconductor solutions that include signal processing, power management, and other components essential for a wide array of electronic products and systems.

Application

The MAX1771CSA is a high-efficiency, step-up DC-DC converter IC commonly used in applications requiring efficient voltage boosting. Typical application areas include battery-powered devices, portable electronics, and communication equipment where extending battery life is crucial. It can be used in devices such as cordless phones, handheld gaming consoles, and personal digital assistants (PDAs). The IC is also suitable for powering microcontrollers and other logic circuits from lower voltage supplies, making it valuable in low-power and energy-efficient designs. Its ability to operate at low input voltages and provide a regulated output makes it ideal for maintaining consistent performance in variable power conditions.

Package

The MAX1771CSA is a DC-DC step-up switching regulator from Maxim Integrated, packaged in an 8-pin SOIC (Small Outline Integrated Circuit) form factor.

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