MIC24053YJL-TR

Voltage - Output (Min/Fixed):	0.8V
Base Part Number:	MIC24053
Supplier Device Package:	28-QFN (5x6)
Package / Case:	28-PowerVQFN
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 125°C (TJ)
Synchronous Rectifier:	Yes
Frequency - Switching:	600kHz
Current - Output:	9A
Voltage - Output (Max):	5.5V
Series:	Hyper Speed Control®, SuperSwitcher II™
Voltage - Input (Max):	19V
Voltage - Input (Min):	4.5V
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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Introduction

The MIC24053YJL-TR is a high efficiency, full featured, low noise, DC/DC switching regulator that integrates both synchronous and nonsynchronous buck (step-down) and boost (step-up) operation and is optimized for powering low voltage, battery-powered systems. Suitable applications of the MIC24053YJL-TR include MP3 and other audio players, Bluetooth® headsets, mobile phones, and other portable and handheld devices.

PMIC - Voltage Regulators - DC DC Switching Regulators

The MIC24053YJL-TR belongs in the family of DC/DC switching regulators. Switching regulators typically include one of two types of dc/dc power conversion topologies: buck or boost. A buck converter provides a step-down voltage from the input voltage to the output voltage and a boost converter provides a step-up voltage from the input to the output. Switching regulators are superior to linear regulators because of their high efficiency (up to 95%), low noise, small size, and high power capability.The MIC24053YJL-TR can simultaneously deliver two output voltage rails, one with greater power than the other. It combines all the features of a step-down (buck) and step-up (boost) regulator, while delivering up to 3A and/or 1.5A output current from the two rails, respectively, with a maximum output voltage of 1.8V. The output voltage is adjustable between 0.6V and 1.35V for the higher power output and 1.8V for the lower power output.The MIC24053YJL-TR incorporates advanced features such as integrated switching FETs, an adjustable soft-start function, adjustable output voltage totem pole drivers, an enable pin and synchronous rectification to reduce conduction losses. It also includes other features such as integrated current limit, an output voltage accuracy of 1.5%, and an operational power-down mode.In addition, the MIC24053YJL-TR has a range of protection features that ensure safe and reliable operation in the event of an over-voltage or under-voltage condition, an over-temperature or an overload situation.

Application Field

The MIC24053YJL-TR is designed for use in a wide variety of power management applications, such as portable and handheld devices, audio players and Bluetooth® headsets, and mobile phones.

Working Principle

The MIC24053YJL-TR is a high frequency, pulse width modulated (PWM) DC/DC switching converter designed for powering low voltage, battery-powered systems. The buck-boost converter uses a fixed frequency, switching current from an input voltage source to a pair of voltage output rails which are adjustable from a lower output level to a higher output level with efficiencies up to 95%.The converter uses a switching frequency of 600 kHz, with an adjustable dead time, to create two independently controllable voltage rails. This allows for current to be shared between the output rails and allows for a wide input voltage range to be converted.The output voltage on the higher power rail is adjustable between 0.6V and 1.35V, and the output voltage on the lower power rail is adjustable to 1.8V. The MIC24053YJL-TR incorporates an adjustable soft start function, adjustable output voltage totem pole drivers and an enable pin that allows for the outputs to be controlled. The MIC24053YJL-TR also has an integrated synchronous rectifier for enhanced efficiency and reduced power dissipation, an integrated current limit for protection of the load, and a power-down operational mode for reduced power consumption when the converter is not in use.

Conclusion

The MIC24053YJL-TR DC/DC switching converter is designed for powering low voltage, battery-operated applications. It is a high frequency PWM converter that provides up to 3A and/or 1.5A output current per rail, with adjustable voltages between 0.6V and 1.35V (for the higher power rail) and 1.8V (for the lower power rail). The device incorporates high efficiency, low noise, small size, and other features such as an adjustable soft-start, adjustable output voltage totem pole drivers, and an enable pin. It is suitable for a variety of power management applications, including portable and handheld electronic devices, audio players, Bluetooth® headsets, and mobile phones.

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