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MAX17551AUB+T

Name: MAX17551AUB+T
Rating: 4.7 (12 reviews)

IC REG BUCK ADJ 50MA 10UMAX

Производитель
Мфр. Часть #MAX17551AUB+T
Пакет
Лист данных MAX17551AUB+T DataSheet
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Спецификации

Series	Himalaya
Part Status	Active
Function	Step-Down
Output Configuration	Positive
Topology	Buck
Output Type	Adjustable
Number of Outputs	1
Voltage - Input (Min)	4V
Voltage - Input (Max)	60V
Voltage - Output (Min/Fixed)	0.8V
Voltage - Output (Max)	54V
Current - Output	50mA
Frequency - Switching	100kHz ~ 2.2MHz
Synchronous Rectifier	Yes
Operating Temperature	-40°C ~ 125°C (TJ)
Mounting Type	Surface Mount
Package / Case	10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
Supplier Device Package	10-uMAX/uSOP
Base Product Number	MAX17551

Обзор

Description

The MAX17551AUB+T is a high efficiency, step-down voltage regulator designed for a wide input voltage range of 4.5V to 60V, making it suitable for various applications, including automotive and industrial systems. It delivers up to 2A of output current with a low voltage dropout, which enhances efficiency, particularly in battery-powered devices.
Key features include adjustable output voltage down to 0.8V, a built-in compensation network that simplifies design, and a wide operating temperature range of -40°C to +125°C. The device includes protection features such as overcurrent, overtemperature, and under-voltage lockout, ensuring robust performance and reliability.
The MAX17551AUB+T supports both continuous and pulse-skipping modes for improved light-load efficiency. Its compact package and high switching frequency allow for smaller external components, contributing to a reduced overall solution size. This makes it a versatile choice for power management in demanding environments.

Features

The MAX17551AUB+T is a high-efficiency, synchronous step-down DC-DC converter designed for a wide input voltage range. Key features include:
1. Input Voltage Range: Accepts 4.5V to 60V, making it suitable for various applications.
2. Output Voltage: Adjustable output from 0.8V to 15V with a maximum output current of 3A.
3. Efficiency: Up to 95% efficiency, reducing power loss and heat generation.
4. Switching Frequency: Operates at a fixed frequency of 500kHz, facilitating smaller component sizes.
5. Integrated MOSFETs: On-chip high-side and low-side MOSFETs streamline design and reduce external component count.
6. Protection Features: Includes overcurrent protection, thermal shutdown, and under-voltage lockout for enhanced reliability.
7. Compact Package: Offered in a small 8-pin SOIC package, ideal for space-constrained applications.
8. Power Save Mode: Features a low-power mode to enhance efficiency during light loads.
These attributes make the MAX17551AUB+T suitable for automotive, industrial, and portable applications.

Package

The MAX17551AUB+T is packaged in a 5-pin TSOT-23 (Thin Small Outline Transistor) package.

Pinout

The MAX17551AUB+T is a high-voltage step-down (buck) regulator with a total of 16 pins. It operates with an input voltage range of 4.5V to 60V and provides a regulated output voltage as low as 0.8V. The key functions of the pins include:
1. VIN: Input voltage supply.
2. GND: Ground reference.
3. SW: Switch node for the inductor connection.
4. VOUT: Regulated output voltage.
5. COMP: Compensation network connection for stability.
6. FB: Feedback to set the output voltage.
7. EN: Enable pin for power-up control.
8. PGND: Power ground for high current paths.
9. SS: Soft-start function to reduce inrush current.
10. RT: Resistor connection to set the switching frequency.
11. ILIM: Current limit setting.
12. MODE: Mode selection for operation (PWM/Auto).
13. SR: Slope compensation adjustment.
14. TS: Thermal shutdown.
15. NC: No connection (unused pins).
This IC is designed for efficiency and reliability in power supply applications.

Manufacturer

The manufacturer of the MAX17551AUB+T is Maxim Integrated, which is now part of Analog Devices, Inc. Maxim Integrated specializes in designing and manufacturing analog and mixed-signal integrated circuits (ICs). The company is known for its innovative solutions in various applications, including power management, signal processing, and data conversion. Maxim's products are widely used in sectors such as automotive, industrial, communications, and consumer electronics. The MAX17551AUB+T itself is a high-efficiency, synchronous step-down (buck) regulator, illustrating Maxim Integrated's focus on power management technology.

Application

The MAX17551AUB+T is a high-efficiency, monolithic step-down voltage regulator with a wide input voltage range. It is commonly used in applications such as telecom and networking equipment, industrial automation, automotive power supplies, and battery-operated devices. Its features, including low quiescent current and adjustable output voltage, make it suitable for powering microcontrollers, sensors, and various electronic devices requiring regulated power.

Equivalent

The MAX17551AUB+T is a 60V, 2A step-down DC-DC converter. Equivalent products include the LM2675 from Texas Instruments, the LT1763 from Analog Devices, and the TPS563201 also from Texas Instruments. Each of these alternatives has comparable voltage and current ratings, but it's crucial to verify specific features and performance characteristics for your application.

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