ZL6105ALAFTKR5546

Frequency - Switching:	200kHz ~ 1.4MHz
Base Part Number:	ZL6105
Supplier Device Package:	36-QFN (6x6)
Package / Case:	36-VFQFN Exposed Pad
Operating Temperature:	-40°C ~ 85°C (TA)
Control Features:	Current Limit, Enable, Power Good, Soft Start, Tracking
Serial Interfaces:	I²C, PMBus, SMBus
Clock Sync:	Yes
Synchronous Rectifier:	Yes
Duty Cycle (Max):	95%
Series:	Digital-DC™
Voltage - Supply (Vcc/Vdd):	3 V ~ 5 V
Output Phases:	1
Number of Outputs:	1
Topology:	Buck
Output Configuration:	Positive
Function:	Step-Down
Output Type:	Transistor Driver
Part Status:	Active
Packaging:	Tape & Reel (TR)

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Introduction

The ZL6105ALAFTKR5546 (hereinafter referred to as “ZL6105”) is a DC-DC Switching Controller. It is designed with an integrated PWM controller, a low on-resistance gate driver, and a high precision programmable voltage reference. The ZL6105 is suitable for demanding applications such as high-efficiency DC-DC converters. It has a wide range of features and benefits that make it suitable for many applications.

Application Fields

The ZL6105 is well suited for fast-transient, high-density, low-power DC-DC converter applications. It has high switching frequency, low power consumption, and fast transient response, making it an ideal choice for applications requiring reliable high-power voltage conversion.The ZL6105 is suitable for applications such as automation, process control, power distribution and management, data center, telecommunications, medical electronics, and motor control.

Working Principle

The ZL6105 uses a pulse width modulated (PWM) control scheme to precisely regulate the input voltage to the desired output voltage. The PWM scheme works by switching a transistor between on and off states at a fixed frequency. The amount of time the transistor is on is determined by the programmed duty cycle ratio. The duty cycle ratio is in turn determined by comparing the programmed output voltage to the actual output voltage.The ZL6105 features a high precision programmable voltage reference that is factory-programmed with a specific voltage setting. This voltage setting is used as the reference voltage to compare against the actual output voltage. By adjusting the duty cycle of the PWM signal, the average output voltage can be precisely controlled.

Protection Features

The ZL6105 provides protection against over-voltage, under-voltage, and over-temperature conditions. The Over-Voltage Shutdown (OVS) feature will shutdown the converter if the output voltage exceeds the set limit. The Under-Voltage Shutdown (UVS) feature will shut down the converter if the input voltage drops below the set limit. The Over-Temperature Shutdown (OTS) feature will shut down the converter if the temperature of the device reaches the set limit.

Conclusion

The ZL6105 is an ideal solution for high-performance and efficient DC-DC converter applications. It has a high switching frequency, low power consumption, and high precision programmable voltage reference, which make it suitable for many applications. The device also features protection features to further enhance system reliability.

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