MAX20461AATJA/V+

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Analog Devices Inc./Maxim Integrated

AUTOMOTIVE HIGH-CURRENT STEP-DOWN CONVERTER WITH USB-C PROTECTION/HOST CHARGER

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MAX20461AATJA/V+

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Analog Devices Inc./Maxim Integrated

AUTOMOTIVE HIGH-CURRENT STEP-DOWN CONVERTER WITH USB-C PROTECTION/HOST CHARGER

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Description Specifications Series Pricing CAD Documents

Description

General part information

MAX20461 Series

The MAX20461 combines a 3A high-efficiency, automotive-grade, step-down converter, a USB Type-C/BC1.2 host charger emulator, and high-bandwidth USB protection switches for automotive USB 2.0 host applications. The device also includes a USB load current-sense amplifier and a configurable feedback-adjustment circuit that provides automatic USB voltage compensation for voltage drops in captive cables often found in automotive applications. The device limits the USB load current using both a fixed internal peak-current threshold and a user-configurable external current-sense USB load threshold.The MAX20461 is optimized for high-frequency operation and includes programmable frequency selection from 310kHz to 2.2MHz, allowing optimization of efficiency, noise, and board space based on the application requirements. The fully synchronous DC-DC converter integrates high-side and low-side MOSFETs with an external SYNC input/output, and can be configured for spread-spectrum operation.The MAX20461 allows flexible configuration and advanced diagnostic options for both stand-alone and supervised applications. The device can be programmed using either external programming resistors and/or internal I²C registers through the I²C bus.The MAX20461 is available in a small, 5mm x 5mm 32-pin TQFN package. It is designed to minimize required external components and layout area.ApplicationsAutomotive Connectivity/TelematicsAutomotive Radio and NavigationUSB Port for Host and Hub Applications

Technical Specifications

Parameters and characteristics for this part

Specification	MAX20461AATJA/V+

Current - Output	3 A
Frequency - Switching (Max)	2.2 MHz
Frequency - Switching (Min)	310 kHz
Function	Step-Down
Grade	Automotive
Mounting Type	Surface Mount
Number of Outputs	1
Operating Temperature (Max)	125 °C
Operating Temperature (Min)	-40 °C
Output Configuration	Positive
Output Type	Adjustable
Package / Case	32-WFQFN Exposed Pad
Package Length	5 mm
Package Name	32-TQFN
Package Width	5 mm
Qualification	AEC-Q100
Synchronous Rectifier	Yes
Topology	Buck
Voltage - Input (Max)	28 V
Voltage - Input (Min)	4.5 V
Voltage - Output (Max)	7 V
Voltage - Output (Min/Fixed)	5 V

MAX20461 Series

Automotive High-Current Step-Down Converter with USB-C Protection/Host Charger

Part	Voltage - Supply (Maximum)	Voltage - Supply (Minimum)	Operating Temperature (Max)	Operating Temperature (Min)	Package / Case	Package Width	Package Name	Package Length	Mounting Type	Current - Supply	Applications	Voltage - Output (Max)	Synchronous Rectifier	Voltage - Output (Min/Fixed)	Topology	Grade	Output Type	Current - Output	Voltage - Input (Max)	Frequency - Switching (Min)	Frequency - Switching (Max)	Voltage - Input (Min)	Number of Outputs	Output Configuration	Qualification	Function
Analog Devices Inc./Maxim Integrated MAX20461ATJD/V+T	28 V	4.5 V	125 °C	-40 °C	32-WFQFN Exposed Pad	5 mm	32-TQFN	5 mm	Surface Mount	28 mA	Power Switch USB Dedicated Charging Port (DCP)
Analog Devices Inc./Maxim Integrated MAX20461AATJP/V+	28 V	4.5 V	125 °C	-40 °C	32-WFQFN Exposed Pad	5 mm	32-TQFN	5 mm	Surface Mount	28 mA	Power Switch USB Dedicated Charging Port (DCP)
Analog Devices Inc./Maxim Integrated MAX20461AATJM/V+	28 V	4.5 V	125 °C	-40 °C	32-WFQFN Exposed Pad	5 mm	32-TQFN	5 mm	Surface Mount	28 mA	Power Switch USB Dedicated Charging Port (DCP)
Analog Devices Inc./Maxim Integrated MAX20461ATJA/V+T	28 V	4.5 V	125 °C	-40 °C	32-WFQFN Exposed Pad	5 mm	32-TQFN	5 mm	Surface Mount	28 mA	Power Switch USB Dedicated Charging Port (DCP)
Analog Devices Inc./Maxim Integrated MAX20461ATJD/V+			125 °C	-40 °C	32-WFQFN Exposed Pad	5 mm	32-TQFN	5 mm	Surface Mount			7 V	Yes	5 V	Buck	Automotive	Adjustable	3 A	28 V	310 kHz	2.2 MHz	4.5 V	1	Positive	AEC-Q100	Step-Down
Analog Devices Inc./Maxim Integrated MAX20461AATJP/V+T	28 V	4.5 V	125 °C	-40 °C	32-WFQFN Exposed Pad	5 mm	32-TQFN	5 mm	Surface Mount	28 mA	Power Switch USB Dedicated Charging Port (DCP)
Analog Devices Inc./Maxim Integrated MAX20461AATJD/V+			125 °C	-40 °C	32-WFQFN Exposed Pad	5 mm	32-TQFN	5 mm	Surface Mount			7 V	Yes	5 V	Buck	Automotive	Adjustable	3 A	28 V	310 kHz	2.2 MHz	4.5 V	1	Positive	AEC-Q100	Step-Down
Analog Devices Inc./Maxim Integrated MAX20461AATJA/V+			125 °C	-40 °C	32-WFQFN Exposed Pad	5 mm	32-TQFN	5 mm	Surface Mount			7 V	Yes	5 V	Buck	Automotive	Adjustable	3 A	28 V	310 kHz	2.2 MHz	4.5 V	1	Positive	AEC-Q100	Step-Down
Analog Devices Inc./Maxim Integrated MAX20461AATJM/V+T	28 V	4.5 V	125 °C	-40 °C	32-WFQFN Exposed Pad	5 mm	32-TQFN	5 mm	Surface Mount	28 mA	Power Switch USB Dedicated Charging Port (DCP)
Analog Devices Inc./Maxim Integrated MAX20461AATJM/VY+T	28 V	4.5 V	125 °C	-40 °C	32-WFQFN Exposed Pad	5 mm	32-TQFN	5 mm	Surface Mount	28 mA	Power Switch USB Dedicated Charging Port (DCP)

Pricing

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CAD

3D models and CAD resources for this part

Documents

Technical documentation and resources

Package Drawing - 32-LFCSP-5X5X0.75

MAX20461: Automotive High-Current Step-Down Converter with USB-C Protection/Host Charger Data Sheet (Rev.8)