MAX5060ATI-T

Frequency - Switching:	125kHz ~ 1.5MHz
Base Part Number:	MAX5060
Supplier Device Package:	28-TQFN (5x5)
Package / Case:	28-WFQFN Exposed Pad
Operating Temperature:	-40°C ~ 125°C (TJ)
Control Features:	Current Limit, Enable, Frequency Control, Power Good
Serial Interfaces:	--
Clock Sync:	Yes
Synchronous Rectifier:	Yes
Duty Cycle (Max):	--
Series:	--
Voltage - Supply (Vcc/Vdd):	4.75 V ~ 28 V
Output Phases:	1
Number of Outputs:	1
Topology:	Buck
Output Configuration:	Positive
Function:	Step-Down
Output Type:	Transistor Driver
Part Status:	Discontinued at Digi-Key
Packaging:	Tape & Reel (TR)

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MAX5060ATI-T - DC DC Switching Controllers

The MAX5060ATI-T is a DC DC switching controller designed by Maxim Integrated specifically for high-performance, low-cost, low-ripple voltage regulation. The device’s architecture uses an internal charge-pump supply voltages up to +18V and -18V, as well as low-side switch. The MAX5060ATI-T is implemented in a compact 8-lead TDFN package as small as 1.5mm x 1.65mm, saving board space and allowing for more design flexibility.

Key Features

• Mode of operation: Step-up, step-down, buck-boost, inverting• Output Voltage Range: 0.6V to 75V• 900kHz Switching Frequency• Current-mode Control• Internal Soft-Start• Over-Voltage and Under-Voltage Protection• Up to 1.2A Output Current

General Description

The MAX5060ATI-T DC DC switching controller from Maxim Integrated employs current-mode control, an internal charge-pump supply, and low-side switch to provide a wide range of output voltage levels with low-ripple voltage regulation. The device offers a fast transient response and a wide input voltage range (1.24V to 75V). Its operating mode can be programmed to step-up, step-down, buck-boost, or inverting to accommodate various designs.The MAX5060ATI-T also features an internal soft-start to provide a controlled ramp up of the output voltage and limit inrush currents. The device also offers over-voltage and under-voltage protection to prevent V out from exceeding the desired range. This feature offers enhanced protection for the device in the event of undershoots, overshoots, or output short-circuits. Finally, the MAX5060ATI-T includes a thermal shutdown feature that detects temperatures above a thermal threshold, and shuts down the output voltage until the temperature is within an acceptable range.

Applications

The MAX5060ATI-T DC DC switching controller is typically used in applications such as battery chargers, DC-DC converters, and power management systems. The device is particularly well-suited for low-cost, low-ripple voltage regulation applications such as automotive and industrial equipment, as well as portable and handheld devices.

Working Principle

The MAX5060ATI-T employs a current-mode control architecture and low-side switch to provide a wide range of output levels with low-ripple voltage regulation. The MAX5060ATI-T operates by comparing the voltage on the VFB pin to the voltage at the RT pin. This deviation, known as the error signal, is then fed back to the device’s current-sensing circuit, which adjusts the switch duty cycle accordingly. This results in the device constantly adjusting the output level to maintain regulation. In order to ensure a low-ripple output, an internal charge-pump is used to supply internally created voltages up to +18V and -18V for higher conversion ratios. The device also features an internal soft-start to provide a controlled ramp up of the output voltage and limit inrush currents.In addition to current-mode control and internal charge-pump, the MAX5060ATI-T also features over-voltage and under-voltage protection to prevent V out from exceeding the desired range. This feature offers enhanced protection for the device, should the output be subjected to an undershoot, overshoot, or output short-circuit condition. Finally, the MAX5060ATI-T includes an integrated thermal shutdown feature that detects temperatures above a thermal threshold, and shuts down the output voltage until the temperature is within an acceptable range.

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