MAX828EUK

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MAX828EUK

+Nomenclature

IC REG CHARG PUMP INV 25MA 5TSOP

  • FabricantSemi - conducteurs

  • Pièce fabricant #MAX828EUK

  • Package SOT-23-5

  • En stock4366

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Spécifications

Attribut Valeur
Package / Case Tape & Reel (TR),Bulk
Part Status Obsolete
Function Ratiometric
Output Configuration Negative
Topology Charge Pump
Output Type Fixed
Number of Outputs 1
Voltage - Input (Min) 1.5V
Voltage - Input (Max) 5.5V
Voltage - Output (Min/Fixed) -Vin, 2Vin
Current - Output 25mA
Frequency - Switching 12kHz
Synchronous Rectifier No
Operating Temperature -40°C ~ 85°C (TA)
Mounting Type Surface Mount

Présentation

Description

The MAX828EUK is a step-up DC-DC converter designed by Maxim Integrated. It is used to boost low input voltages to a stable higher output voltage. This device is compact and operates at a high frequency, allowing for the use of small external components, which makes it suitable for applications where space is limited. It typically features a low quiescent current, making it efficient for battery-powered applications. The MAX828EUK can start up with input voltages as low as 0.8V, making it ideal for use with single-cell alkaline, NiMH, or NiCd batteries. It typically comes in a SOT-23 package, which is convenient for surface-mount technology (SMT) assembly. Applications include powering microcontrollers, sensors, and other low-power devices where boosting voltage is necessary. Its design allows for minimal external components, reducing complexity and cost. The MAX828EUK is often chosen for its efficiency, compact size, and reliability in low-power applications.

Equivalent

The MAX828EUK is a step-up DC-DC converter by Maxim Integrated. Equivalent products include:
1. MC34063 by ON Semiconductor - A popular step-up, step-down, or inverter switching regulator.
2. NCP1402 by ON Semiconductor - A micropower step-up DC-DC converter.
3. TPS61070 by Texas Instruments - A synchronous boost converter.
4. LM2731 by Texas Instruments - A step-up DC-DC regulator.
5. MIC2250 by Microchip Technology - A high-efficiency PWM boost converter.
These alternatives offer similar functionalities and can be used depending on specific requirements.

Features

The MAX828EUK is a charge-pump voltage inverter, producing a negative output from a positive input. Key features include:
1. Low Operating Voltage: Functions effectively with input voltages ranging from 1.5V to 5.5V, making it suitable for battery-powered applications.
2. Output Current: Delivers up to 25 mA, meeting the needs of low-power applications.
3. Efficiency: Offers high efficiency, reducing power loss and heat generation in the system.
4. Compact Package: Available in a small SOT-23 package, which is ideal for space-constrained applications.
5. Low Quiescent Current: Consumes minimal quiescent current (typically around 100 µA), enhancing battery life in portable devices.
6. No Inductors Required: Simplifies design and reduces cost and size because it doesn't require external inductors.
7. Shutdown Feature: Includes a shutdown mode to further conserve power when the device is not in use.
8. Wide Temperature Range: Operates over a wide temperature range, ensuring reliability in various environmental conditions.
These features make the MAX828EUK suitable for applications like LCD biasing and general-purpose negative voltage generation.

Pinout

The MAX828EUK is a 5-pin SOT-23 package integrated circuit. It is a CMOS, micropower inverting charge pump voltage converter. The primary function of this device is to invert an input voltage to an output voltage of the same magnitude but opposite polarity. This makes it useful for generating negative supply voltages from a positive supply.
The pin configuration is as follows:
1. GND: Ground pin.
2. CAP+: Positive terminal for the charge-pump capacitor.
3. VOUT: Output pin where the negative voltage is generated.
4. VIN: Input voltage pin.
5. CAP-: Negative terminal for the charge-pump capacitor.
The MAX828EUK operates over a supply voltage range of 1.5V to 5.5V and is often used in situations where a negative voltage is required but only a positive supply is available, such as in portable devices, LCD panels, and battery-powered applications.

Manufacturer

The MAX828EUK is manufactured by Maxim Integrated. Maxim Integrated is a company that specializes in designing, manufacturing, and selling analog and mixed-signal integrated circuits. They supply a wide range of products for various applications, including power management, battery management, interface, sensors, and more. Maxim Integrated serves industries such as automotive, industrial, communications, consumer electronics, and healthcare, providing innovative solutions to enhance the performance and efficiency of electronic devices. In 2021, Maxim Integrated became part of Analog Devices, Inc., further expanding its capabilities in the semiconductor market.

Application

The MAX828EUK is a high-efficiency, low-power DC-DC boost converter. Its application areas include portable devices, battery-powered equipment, and handheld electronics where space is limited and power efficiency is crucial. It is often used in applications requiring voltage step-up, such as powering white LEDs in flashlights, boosting voltages for LCD displays, and supplying power for small sensors and microcontrollers. Its small size and minimal external components make it ideal for compact designs in consumer electronics, medical devices, and wireless communication products. The MAX828EUK is particularly well-suited for scenarios where conserving battery life is important, such as in remote controls, hearing aids, and wearable technology.

Package

The MAX828EUK is available in a SOT-23 package, a small outline transistor package commonly used for surface-mount devices.

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