MAX16903

PRODUCTION

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

1A Automotive Buck Converter Integrates High- and Low-Side FETs and Uses Only 25µA Quiescent Current

Data Sheet (Rev. 10) Product Selection Table

Part Models: 22
1ku List Price: Starting From $4.25

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Part Details

Meets Stringent Automotive Quality and Reliability Requirements
- +3.5V to +28V Input Voltage Range Allows Operation in "Cold Crank" Conditions
- Tolerates Input-Voltage Transients to +42V
- Enable-Pin Compatible from +3.3V Logic Level to +42V
- 1A Minimum Output Current with Overcurrent Protection
- -40°C to +125°C Automotive Temperature Range
- AEC-Q100 Qualified
Increased Efficiency and Reduced BOM Cost and Board Space
- Integrated High- and Low-Side FETs
- Fixed Output Voltages (see the Selector Guide in the full data sheet and Contact the Factory for All Available Trimmed Output-Voltage Options)
- 10-Pin TDFN-EP or 16-Pin TSSOP-EP Packages
Low Quiescent Current Helps Designers Meet Stringent OEM Current Requirements
- 25µA Quiescent Current During Skip Mode Operation
High Switching Frequency Allows Use of Small, Low-Cost External Components
- 2.1MHz Switching Frequency with Three Modes of Operation
- Skip Mode for Efficient, Low-Power Operation
- Forced Fixed-Frequency Operation
- External Frequency Synchronization
Reduced EMI Emissions at the Switching Frequency
- Optional Spread-Spectrum Frequency Modulation

Part Models: 22
1ku List Price: Starting From $4.25

Documentation

Data Sheet 1

MAX16903: 2.1MHz, High-Voltage, 1A Mini-Buck Converter Data Sheet (Rev.10) 04/25/2017

Design Note 1

Layout Guidelines Maximize Automotive Power-Supply Performance and Minimize Emissions 01/24/2012

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.

Part Model	Pin/Package Drawing	Documentation	CAD Symbols, Footprints, and 3D Models
MAX16903RATB33+	Thin Dual Flatpack No Leads, Exposed Pad	Material Declaration Reliablity Data	Ultra Librarian SamacSys
MAX16903RATB33+T	Thin Dual Flatpack No Leads, Exposed Pad	Material Declaration Reliablity Data	Ultra Librarian SamacSys
MAX16903RATB33/V+	Thin Dual Flatpack No Leads, Exposed Pad	Material Declaration Reliablity Data	Ultra Librarian SamacSys
MAX16903RATB33/V+T	Thin Dual Flatpack No Leads, Exposed Pad	Material Declaration Reliablity Data	Ultra Librarian SamacSys
MAX16903RAUE33+	16-TSSOP_4.4_EP-4.4_MM	Material Declaration Reliablity Data	Ultra Librarian SamacSys
MAX16903RAUE33+T	16-TSSOP_4.4_EP-4.4_MM	Material Declaration Reliablity Data	Ultra Librarian SamacSys
MAX16903RAUE33/V+	16-TSSOP_4.4_EP-4.4_MM	Material Declaration Reliablity Data	Ultra Librarian SamacSys
MAX16903RAUE33/V+T	16-TSSOP_4.4_EP-4.4_MM	Material Declaration Reliablity Data	Ultra Librarian SamacSys
MAX16903RAUE50+	16-TSSOP_4.4_EP-4.4_MM	Material Declaration Reliablity Data	Ultra Librarian SamacSys
MAX16903RAUE50/V+	16-TSSOP_4.4_EP-4.4_MM	Material Declaration Reliablity Data	Ultra Librarian SamacSys
MAX16903RAUE50/V+T	16-TSSOP_4.4_EP-4.4_MM	Material Declaration Reliablity Data	Ultra Librarian SamacSys
MAX16903SATB33/V+	Thin Dual Flatpack No Leads, Exposed Pad	Material Declaration Reliablity Data	Ultra Librarian SamacSys
MAX16903SATB33/V+T	Thin Dual Flatpack No Leads, Exposed Pad	Material Declaration Reliablity Data	Ultra Librarian SamacSys
MAX16903SATB50/V+	Thin Dual Flatpack No Leads, Exposed Pad	Material Declaration Reliablity Data	Ultra Librarian SamacSys
MAX16903SATB50/V+T	Thin Dual Flatpack No Leads, Exposed Pad	Material Declaration Reliablity Data	Ultra Librarian SamacSys
MAX16903SAUE33+	16-TSSOP_4.4_EP-4.4_MM	Material Declaration Reliablity Data	Ultra Librarian SamacSys
MAX16903SAUE33/V+	16-TSSOP_4.4_EP-4.4_MM	Material Declaration Reliablity Data	Ultra Librarian SamacSys
MAX16903SAUE33/V+T	16-TSSOP_4.4_EP-4.4_MM	Material Declaration Reliablity Data	Ultra Librarian SamacSys
MAX16903SAUE50+	16-TSSOP_4.4_EP-4.4_MM	Material Declaration Reliablity Data	Ultra Librarian SamacSys
MAX16903SAUE50+T	16-TSSOP_4.4_EP-4.4_MM	Material Declaration Reliablity Data	Ultra Librarian SamacSys
MAX16903SAUE50/V+	16-TSSOP_4.4_EP-4.4_MM	Material Declaration Reliablity Data	Ultra Librarian SamacSys
MAX16903SAUE50/V+T	16-TSSOP_4.4_EP-4.4_MM	Material Declaration Reliablity Data	Ultra Librarian SamacSys

Part Models	Product Lifecycle	PCN

Sep 22, 2017 - 1681A WAFER FAB
		pcn_1681a
MAX16903RATB33+	PRODUCTION
MAX16903RATB33+T	PRODUCTION
MAX16903RATB33/V+	PRODUCTION
MAX16903RATB33/V+T	PRODUCTION
MAX16903RAUE33+	PRODUCTION
MAX16903RAUE33/V+	PRODUCTION
MAX16903RAUE50/V+	PRODUCTION
MAX16903RAUE50/V+T	PRODUCTION
MAX16903SATB33/V+	PRODUCTION
MAX16903SATB33/V+T	PRODUCTION
MAX16903SATB50/V+	PRODUCTION
MAX16903SATB50/V+T	PRODUCTION
MAX16903SAUE33/V+	PRODUCTION
MAX16903SAUE33/V+T	PRODUCTION
MAX16903SAUE50/V+	PRODUCTION
MAX16903SAUE50/V+T	PRODUCTION
Jun 20, 2016 - 1612 ASSEMBLY
		pcn_1612
MAX16903RATB33+	PRODUCTION	pcn_1612
Jun 18, 2021 - 2161 ASSEMBLY
		pcn_2161
MAX16903RATB33/V+	PRODUCTION
MAX16903RATB33/V+T	PRODUCTION
MAX16903SATB33/V+	PRODUCTION
MAX16903SATB33/V+T	PRODUCTION
MAX16903SATB50/V+	PRODUCTION
MAX16903SATB50/V+T	PRODUCTION
May 11, 2022 - 2236N ASSEMBLY
		pcn_2236n
MAX16903RAUE33+	PRODUCTION
MAX16903RAUE33/V+	PRODUCTION
MAX16903RAUE33/V+T	PRODUCTION
MAX16903SAUE33+	PRODUCTION
Jul 13, 2022 - 2236A ASSEMBLY
		pcn_2236a
MAX16903RAUE50/V+	PRODUCTION
MAX16903RAUE50/V+T	PRODUCTION
MAX16903SAUE33/V+	PRODUCTION
MAX16903SAUE33/V+T	PRODUCTION
MAX16903SAUE50/V+	PRODUCTION
MAX16903SAUE50/V+T	PRODUCTION
Jan 17, 2018 - 1721E ASSEMBLY
		pcn_1721e
MAX16903RAUE50/V+	PRODUCTION
MAX16903RAUE50/V+T	PRODUCTION
MAX16903SAUE33/V+	PRODUCTION
MAX16903SAUE33/V+T	PRODUCTION
MAX16903SAUE50/V+	PRODUCTION
MAX16903SAUE50/V+T	PRODUCTION

This is the most up-to-date revision of the Data Sheet.

Software Resources

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Hardware Ecosystem

Parts	Product Life Cycle	Description
Internal Power Switch Buck Regulators 1
MAX16904	PRODUCTION	2.1MHz, High-Voltage, 600mA Mini-Buck Converter

Tools & Simulations

EE-Sim Power® Tools 1

The EE-Sim DC-DC Converter Tool uses your requirements to quickly create a complete power design including a schematic, BOM with commercially available parts, and time and frequency domain simulations. Your customized schematic can be downloaded for further analysis in the standalone EE-Sim OASIS Simulator, featuring SIMPLIS and SIMetrix SPICE engines.

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SIMPLIS Models 1

MAX16903 SIMPLIS Schematic

Evaluation Kits

Evaluation Kit for the MAX16903

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Features and Benefits

Up to +42V Input Supply Range
Delivers Up to 1A Output Current
Proven PCB Layout
Fully Assembled and Tested

Product Details

The MAX16903 evaluation kit (EV kit) provides a proven design to evaluate the MAX16903 2.1MHz high-voltage mini-buck converter in a 16-pin TSSOP package. All components are rated for the automotive temperature range. Various test points are included for evaluation.

The EV kit PCB comes with a MAX16903RAUE50/V+ installed. The EV kit outputs a fixed +5V. The fixed +3.3V output version can also be installed with minimal component changes. Contact the factory for free samples of the pin-compatible MAX16903SAUE50/V+, MAX16903SAUE33/V+, and MAX16903RAUE33/V+ to evaluate these devices.

Applications

Automotive
High-Voltage Input-Power DC-DC Applications
Industrial
Military

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