MAX630CPA+

Voltage - Output (Min/Fixed):	2.2V
Base Part Number:	MAX630
Supplier Device Package:	8-PDIP
Package / Case:	8-DIP (0.300", 7.62mm)
Mounting Type:	Through Hole
Operating Temperature:	0°C ~ 70°C (TA)
Synchronous Rectifier:	No
Frequency - Switching:	40kHz
Current - Output:	525mA (Switch)
Voltage - Output (Max):	18V (Switch)
Series:	--
Voltage - Input (Max):	16.5V
Voltage - Input (Min):	2.2V
Number of Outputs:	1
Output Type:	Adjustable
Topology:	Boost
Output Configuration:	Positive
Function:	Step-Up
Part Status:	Active
Packaging:	Tube

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MAX630CPA+ Application Field and Working Principle

The MAX630CPA+ is an advanced DC-DC converter switching regulator ideal for applications like ultra-portable PCs, PDAs and MP3 players. This integrated step-down switching regulator is composed of two primary sections – an internal power MOSFET and a controller IC. It offers adjustable output voltage, up to 2A of output current, and fast transient response, making it ideal for powering a wide range of digital logic and other applications.The MAX630CPA+ can both generate and regulate a wide range of DC-DC converter switching regulator solutions for portable, battery-powered, or other applications. The integrated Power MOSFET makes it ideal for space-constrained applications, while offering higher efficiency and reliability compared to traditional linear and external switch topology designs. The MAX630CPA+ is also capable of providing tight load and line regulation, excellent transient response, and clean output over a variety of load conditions.

Application Field

The MAX630CPA+ is a high-performance DC-DC converter switching regulator that has been designed with a wide range of applications in mind. Its ability to provide adjustable output voltage and up to 2A of current makes it suitable for high-load applications such as powering mobile phones, digital TVs, and portable media players. Its wide input voltage range (3V to 30V) means that it can be used in both cars and battery-powered applications. It also has fast transient response, making it very suitable for powering a wide range of digital logic and other applications in RTL integrated circuits.

Working Principle

The MAX630CPA+ utilizes a fixed frequency, constant-on-time (COT) control scheme to regulate the output voltage. The output voltage can be set from 0.6V to the input voltage, which is usually the battery voltage (3V to 30V). The device achieves a 1µV/V line regulation and regulation accuracy of ±1%, with a peak deviation of 1% over a temperature range of -40°C to +85°C. The integrated power MOSFET allows the circuit to utilize peak current mode control with a low-side current-sensing MOSFET, eliminating the need for an optocoupler and external circuit components.The MAX630CPA+ also provides output bandwidth up to 3MHz, pulse-by-pulse current limiting, and over-voltage, over-current, and under-voltage protection to ensure safe operation. Additionally, it is capable of providing a soft-start ramp to reduce output inrush current, as well as a power-on reset (POR) for system initialization. The result is a highly efficient, low-power and low-noise DC-DC converter switching regulator solution with excellent transient and load step response.

Conclusion

In conclusion, the MAX630CPA+ is a highly integrated, advanced DC-DC converter switching regulator ideal for a wide variety of applications such as portable, battery-powered and cars. Its ultra-small size, excellent transient response, and integration of a power MOSFET make it a great choice for engineers looking to build a space-constrained, energy-efficient power solution. The MAX630CPA+ also ensures reliable operation with features such as over-voltage, over-current, and under-voltage protection, power-on reset, and pulse-by-pulse current limiting.

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