MAX16903RAUE50+

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Analog Devices Inc./Maxim Integrated

2.1MHZ, HIGH-VOLTAGE, 1A MINI-BUCK CONVERTER

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MAX16903RAUE50+

Active

Analog Devices Inc./Maxim Integrated

2.1MHZ, HIGH-VOLTAGE, 1A MINI-BUCK CONVERTER

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Description Specifications Series Pricing CAD Documents

Description

General part information

MAX16903 Series

The MAX16903 is a small, synchronous buck converter with integrated high-side and low-side switches. The device is designed to deliver 1A with input voltages from +3.5V to +28V while using only 25µA quiescent current at no load. Voltage quality can be monitored by observing the PGOOD signal. The MAX16903 can operate in dropout by running at 97% duty cycle, making it ideal for automotive and industrial applications.The MAX16903 operates at a 2.1MHz frequency, allowing for small external components and reduced output ripple. It guarantees no AM band interference. SYNC input programmability enables three frequency modes for optimized performance: forced fixed-frequency operation, skip mode (ultra-low quiescent current of 25µA), and synchronization to an external clock. The MAX16903 can be ordered with spread-spectrum frequency modulation, designed to minimize EMI-radiated emissions due to the modulation frequency.The MAX16903 is available in a thermally enhanced, 3mm x 3mm, 10-pin TDFN package or a 16-pin TSSOP package. The MAX16903 operates over the -40°C to +125°C automotive temperature range.ApplicationsAutomotiveHigh-Voltage Input-Power DC-DC ApplicationsIndustrial

Technical Specifications

Parameters and characteristics for this part

Specification	MAX16903RAUE50+

Current - Output	1 A
Frequency - Switching	2.1 MHz
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	Fixed
Package Features	Exposed Pad
Package Length	0.173 in
Package Name	16-TSSOP, 16-TSSOP-EP
Package Width	4.4 mm
Qualification	AEC-Q100
Synchronous Rectifier	Yes
Topology	Buck
Voltage - Input (Max)	28 V
Voltage - Input (Min)	3.5 V
Voltage - Output (Min/Fixed)	5 V

MAX16903 Series

2.1MHz, High-Voltage, 1A Mini-Buck Converter

Part	Operating Temperature (Max)	Operating Temperature (Min)	Voltage - Output (Min/Fixed)	Voltage - Input (Min)	Number of Outputs	Package / Case	Package Length	Package Name	Package Width	Grade	Topology	Output Type	Current - Output	Function	Qualification	Output Configuration	Mounting Type	Synchronous Rectifier	Voltage - Input (Max)	Frequency - Switching	Package Features
Analog Devices Inc./Maxim Integrated MAX16903RATB33/V+T	125 °C	-40 °C	3.3 V	3.5 V	1	10-WFDFN Exposed Pad	3 mm	10-TDFN	3 mm	Automotive	Buck	Fixed	1 A	Step-Down	AEC-Q100	Positive	Surface Mount	Yes	28 V	2.1 MHz
Analog Devices Inc./Maxim Integrated MAX16903SAUE33/V+	125 °C	-40 °C	3.3 V	3.5 V	1		0.173 in	16-TSSOP 16-TSSOP-EP	4.4 mm	Automotive	Buck	Fixed	1 A	Step-Down	AEC-Q100	Positive	Surface Mount	Yes	28 V	2.1 MHz	Exposed Pad
Analog Devices Inc./Maxim Integrated MAX16903SATB50/V+T	125 °C	-40 °C	5 V	3.5 V	1	10-WFDFN Exposed Pad	3 mm	10-TDFN	3 mm	Automotive	Buck	Fixed	1 A	Step-Down	AEC-Q100	Positive	Surface Mount	Yes	28 V	2.1 MHz
Analog Devices Inc./Maxim Integrated MAX16903RATB18/V+T	125 °C	-40 °C	1.8 V	3.5 V	1	10-WFDFN Exposed Pad	3 mm	10-TDFN	3 mm	Automotive	Buck	Fixed	1 A	Step-Down	AEC-Q100	Positive	Surface Mount	Yes	28 V	2.1 MHz
Analog Devices Inc./Maxim Integrated MAX16903RAUE33+	125 °C	-40 °C	3.3 V	3.5 V	1		0.173 in	16-TSSOP 16-TSSOP-EP	4.4 mm	Automotive	Buck	Fixed	1 A	Step-Down	AEC-Q100	Positive	Surface Mount	Yes	28 V	2.1 MHz	Exposed Pad
Analog Devices Inc./Maxim Integrated MAX16903RAUE50+	125 °C	-40 °C	5 V	3.5 V	1		0.173 in	16-TSSOP 16-TSSOP-EP	4.4 mm	Automotive	Buck	Fixed	1 A	Step-Down	AEC-Q100	Positive	Surface Mount	Yes	28 V	2.1 MHz	Exposed Pad
Analog Devices Inc./Maxim Integrated MAX16903SAUE50/V+T	125 °C	-40 °C	5 V	3.5 V	1		0.173 in	16-TSSOP 16-TSSOP-EP	4.4 mm	Automotive	Buck	Fixed	1 A	Step-Down	AEC-Q100	Positive	Surface Mount	Yes	28 V	2.1 MHz	Exposed Pad
Analog Devices Inc./Maxim Integrated MAX16903SAUE50+	125 °C	-40 °C	5 V	3.5 V	1		0.173 in	16-TSSOP 16-TSSOP-EP	4.4 mm	Automotive	Buck	Fixed	1 A	Step-Down	AEC-Q100	Positive	Surface Mount	Yes	28 V	2.1 MHz	Exposed Pad
Analog Devices Inc./Maxim Integrated MAX16903SATB33/V+T	125 °C	-40 °C	3.3 V	3.5 V	1	10-WFDFN Exposed Pad	3 mm	10-TDFN	3 mm	Automotive	Buck	Fixed	1 A	Step-Down	AEC-Q100	Positive	Surface Mount	Yes	28 V	2.1 MHz
Analog Devices Inc./Maxim Integrated MAX16903SAUE33+	125 °C	-40 °C	3.3 V	3.5 V	1		0.173 in	16-TSSOP 16-TSSOP-EP	4.4 mm	Automotive	Buck	Fixed	1 A	Step-Down	AEC-Q100	Positive	Surface Mount	Yes	28 V	2.1 MHz	Exposed Pad

Pricing

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CAD

3D models and CAD resources for this part

Documents

Technical documentation and resources

Package Drawing - 16-TSSOP_4.4_EP-4.4_MM

MAX16903: 2.1MHz, High-Voltage, 1A Mini-Buck Converter Data Sheet (Rev.10)

Datasheet