MAX1734EUK15+

Voltage - Input (Max):	5.5V
Supplier Device Package:	SOT-23-5
Package / Case:	SC-74A, SOT-753
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 85°C (TA)
Synchronous Rectifier:	Yes
Frequency - Switching:	1.2MHz
Current - Output:	250mA
Voltage - Output (Max):	--
Voltage - Output (Min/Fixed):	1.5V
Series:	--
Voltage - Input (Min):	2.7V
Number of Outputs:	1
Output Type:	Fixed
Topology:	Buck
Output Configuration:	Positive
Function:	Step-Down
Part Status:	Active
Packaging:	Strip

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The MAX1734EUK15+ DC/DC switching regulator is a low–power application-specific integrated circuit (ASIC) designed for very low-noise, and high-efficiency power conversion. The regulator is designed to convert and regulate a supply voltage from 1.8V to 5.5V down to 0.6V, and provides output current up to 150mA. It features a high-efficiency internal switch, soft-start technology and integrated protection circuits.

Features

• Wide input voltage (1.8V to 5.5V)
• Output current up to 150mA
• High efficiency internal switch
• Soft start technology
• Integrated protection circuits
• Built-in MOSFET, reverse-battery protection
• Capped ceramic output capacitor
• Programmable frequency range of 200kHz to 1MHz
• Programmable soft-start time of 500ns to 1.2ms

Applications

The MAX1734EUK15+ DC/DC switching regulator is ideal for powering applications such as portable consumer electronics, industrial controls, medical devices, and other DC/DC conversion applications that require low-noise and high-efficiency.

Working Principle

The MAX1734EUK15+ is an integrated switching regulator circuit that incorporates two separate power stages. The first stage is a power supply which converts the input voltage to a well-regulated voltage. The second stage is the DC/DC converter which uses an oscillator, optimized for a specific duty cycle and operating frequency, to produce the required output voltage.The MAX1734EUK15+ also includes an on-chip MOSFET and reverse-battery protection circuitry, which helps protect the device from overvoltage. Additionally, it features an internal soft-start mechanism to ensure a smooth start up by controlling the ramp rate of the output voltage. A key feature of the MAX1734EUK15+ is its high-efficiency switch, which allows for greater power savings and improved performance. The device also includes a built-in capability for a capacitor-based output voltage protection. This is beneficial for applications that need to operate in extreme temperature conditions.The MAX1734EUK15+ is a highly efficient and reliable solution for low-noise, high-efficiency power supply designs. Its wide input voltage range, high-efficiency switch, and integrated protection circuits make it an ideal choice for various applications.

Conclusion

The MAX1734EUK15+ DC/DC switching regulator is a low-power, low-noise, and high-efficiency solution for DC/DC power conversion. It features a wide input voltage range, high-efficiency internal switch, soft start technology, integrated protection circuits, and a capacitor-based output voltage protection to ensure reliable operation. The MAX1734EUK15+ is ideal for powering applications such as portable consumer electronics, industrial controls, medical devices, and other DC/DC conversion applications that require low-noise and high-efficiency.

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