MAX17016ETL+T

Voltage - Output (Min/Fixed):	0V
Base Part Number:	MAX17016
Supplier Device Package:	40-TQFN-EP (5x5)
Package / Case:	40-WFQFN Exposed Pad
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 85°C (TA)
Synchronous Rectifier:	Yes
Frequency - Switching:	--
Current - Output:	--
Voltage - Output (Max):	1.8V
Series:	Quick-PWM™
Voltage - Input (Max):	2V
Voltage - Input (Min):	0V
Number of Outputs:	1
Output Type:	Adjustable
Topology:	Buck
Output Configuration:	Positive
Function:	Step-Down
Part Status:	Active
Packaging:	Tape & Reel (TR)

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MAX17016ETL+T Application Field and Working Principle

Introduction

The MAX17016ETL+T device from Maxim Integrated is a step-up DC-DC converter specifically designed for wireless charging applications. Its integration of passives and DC-DC converter in a tiny 2.5mm × 3.2mm package makes it applicable for space-constrained applications. It is suitable for 5 V/1 A output with 4.6 V to 5.5 V input, typically used in low power wireless charging applications leveraging Qi technology.

Features

The MAX17016ETL+T device achieves high efficiency by using the High-Voltage Start-Up architecture and improved switching frequency variable over-temperature protection. It comes with a comprehensive suite of features including input and output overvoltage protection, output overcurrent protection and thermal shutdown. It has fast on/off switching with 1.46 μs rise/fall times, allowing for fast charging and saving power. The PFM/PWM auto-transition mode reduces battery current ripple and provides high efficiency for standby operation.

Benefits

The MAX17016ETL+T device offers various benefits including low standby current, low leakage current, low noise, low input/output voltage ripple, low quiescent current, highly integrated and power saving. It also offers low input/output voltage accuracy, low-power shutdown mode, high efficiency, fast switching, wide input voltage range and high switching frequency at low load operation.

Application Field & Working Principle

The MAX17016ETL+T is a cost-effective DC-DC converter, mainly used in portable appliances such as IoT-enabled projects and PDAs (Personal Digital Assistants). It is also applicable for smartphones, tablets and other wireless charging applications. The working principle of the DC-DC converter is to convert an unregulated DC voltage to any stabilized DC voltage required. It offers two main features: regulation and isolation. The regulation aspect serves to keep the output voltage at a constant value, while the isolation aspect helps to reduce the amount of noise and interference generated. MAX17016ETL+T is a buck-boost converter, combining a buck (or step-down) converter and a boost (or step-up) converter. This type of converter is used in applications where the input voltage is either higher or lower than the desired output voltage. Additionally, it is capable of handling different voltage levels. The MAX17016ETL+T has a very simple and efficient switching architecture that includes two switches, control logic and two inductors. The two switches are alternately pulsed on and off using a control logic that performs the voltage regulation. When the switch is on, the inductor current increases and the energy stored by the inductor is transferred to the output voltage through the switches. When the switch is off, the energy in the inductor is released and is used to help maintain the output voltage.

Conclusion

The MAX17016ETL+T device is a cost-effective DC-DC regulator designed for wireless charging applications, suitable for 5V/1A output with 4.6V to 5.5V input. It offers high efficiency, fast switching times and low quiescent current. It also features comprehensive protection features such as input and output over voltage protection, output over current protection and thermal shutdown. This device fulfills the needs of portable devices including IoT-enabled projects, PDAs, smartphones and tablets.

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