Series:	--
Packaging:	Tube
Part Status:	Not For New Designs
Applications:	Controller, TFT LCD
Voltage - Input:	4.5 V ~ 28 V
Number of Outputs:	6
Voltage - Output:	--
Operating Temperature:	-40°C ~ 85°C
Mounting Type:	Surface Mount
Package / Case:	32-WFQFN Exposed Pad
Supplier Device Package:	32-TQFN-EP (5x5)
Base Part Number:	MAX1531

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Introduction

MAX1531ETJ+ is a special purpose IC-based regulator ICs specially designed for portable applications. It is an integrated switching regulator that is capable of supporting a wide range of output currents from peripherals devices, allowing for low power operation. It is widely used in audio portable, wireless, and other portable applications.

Overview of MAX1531ETJ+

MAX1531ETJ+ is a low operating voltage, low quiescent current overvoltage protection IC. The device includes an adjustable P-channel power MOSFET and a 1.5V reference, along with integrated on-board overvoltage protection circuitry. The MAX1531ETJ+ includes a wide output voltage range, allowing designers to configure the regulator to provide a maximum 4.5V output. In addition, the regulator is capable of delivering a wide range of output currents that range from 5mA to 300mA with a minimum load of 1mA. Moreover, the device features thermal shutdown protection, pulse-by-pulse current limit protection, and reverse current protection.

Application Fields & Working Principle

MAX1531ETJ+ can be used in a wide range of applications such as portable audio devices, camcorders, phones, tablets, and other portable applications. Its application is extremely versatile, thanks to its ability to provide a wide range of output voltages and currents. This makes it suitable for any device that requires a low-power supply or low-voltage inputs.The MAX1531ETJ+ operates by sourcing its current from one power supply, converting it to the necessary output voltage. To this end, its working principle is based on the principles of pulse width modulation (PWM). The built-in PWM circuit modulates the duty cycle of the output voltage to maintain a steady voltage level, while at the same time minimizing power dissipation. This gets achieved by switching the output short-circuited current on or off. Additionally, the standby current is reduced to a minimum level when no load is present, or when the device is in a non-operating state.In addition to its low-power operation and wide range of voltage and current levels, the MAX1531ETJ+ also offers various features such as reverse-current protection, thermal shutdown protection, and soft-start function. These features make it a suitable choice for portable applications where superior performance and reliability are needed.

Conclusion

In conclusion, the MAX1531ETJ+ is an integrated switching regulator specially designed for portable applications. It is a low quiescent current, low operating voltage, overvoltage protection IC, with a wide output voltage range capable of providing a maximum 4.5V output. Moreover, its features including pulse width modulation (PWM) technology for power efficiency and current protection make it a suitable choice for various portable applications.

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