MAX16904

PRODUCTION

2.1MHz, High-Voltage, 600mA Mini-Buck Converter

600mA Automotive Buck Converter Integrates High-Side and Low-Side FETs and Uses Only 25µA Quiescent Current

Data Sheet (Rev. 15) Product Selection Table

Part Models: 30
1ku List Price: Starting From $4.26

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Overview

Wide +3.5V to +28V Input Voltage Range
Tolerates Input Voltage Transients to +42V
600mA Minimum Output Current with Overcurrent Protection
Fixed Output Voltages (See the Selector Guide in the full data sheet and Contact Factory for All Available Trimmed Output Voltage Options)
2.1MHz Switching Frequency with Three Modes of Operation
- 25µA Ultra-Low Quiescent Current SKIP Mode
- Forced Fixed-Frequency Operation
- External Frequency Synchronization
Optional Spread-Spectrum Frequency Modulation
Power-Good Output
Enable-Pin Compatible from +3.3V Logic Level to +42V
Thermal Shutdown Protection
-40°C to +125°C Automotive Temperature Range
10-Pin TDFN-EP or 16-Pin TSSOP-EP Packages
AEC-Q100 Qualified

The MAX16904 is a small, synchronous buck converter with integrated high-side and low-side switches. The device is designed to deliver 600mA 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 MAX16904 can operate in dropout by running at 97% duty cycle, making it ideal for automotive and industrial applications.

The MAX16904 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 MAX16904 can be ordered with spread-spectrum frequency modulation, designed to minimize EMI-radiated emissions due to the modulation frequency.

The MAX16904 is available in a thermally enhanced, 3mm x 3mm, 10-pin TDFN package or a 16-pin TSSOP package. The MAX16904 operates over the -40°C to +125°C automotive temperature range.

Applications

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

Part Models: 30
1ku List Price: Starting From $4.26

Documentation

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
MAX16904RATB50+	Thin Dual Flatpack No Leads, Exposed Pad	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
MAX16904RATB50+T	Thin Dual Flatpack No Leads, Exposed Pad	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
MAX16904RATB50/V+	Thin Dual Flatpack No Leads, Exposed Pad	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
MAX16904RATB50/V+T	Thin Dual Flatpack No Leads, Exposed Pad	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
MAX16904RAUE33/V+	16-TSSOP_4.4_EP-4.4_MM	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
MAX16904RAUE33/V+T	16-TSSOP_4.4_EP-4.4_MM	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
MAX16904RAUE50+	16-TSSOP_4.4_EP-4.4_MM	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
MAX16904SATB33/V+	Thin Dual Flatpack No Leads, Exposed Pad	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
MAX16904SATB33/V+T	Thin Dual Flatpack No Leads, Exposed Pad	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
MAX16904SATB50+	Thin Dual Flatpack No Leads, Exposed Pad	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
MAX16904SATB50+T	Thin Dual Flatpack No Leads, Exposed Pad	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
MAX16904SATB50/V+	Thin Dual Flatpack No Leads, Exposed Pad	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
MAX16904SATB50/V+T	Thin Dual Flatpack No Leads, Exposed Pad	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
MAX16904SATB51/V+	Thin Dual Flatpack No Leads, Exposed Pad	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
MAX16904SATB51/V+T	Thin Dual Flatpack No Leads, Exposed Pad	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
MAX16904SATB52/V+	Thin Dual Flatpack No Leads, Exposed Pad	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
MAX16904SATB52/V+T	Thin Dual Flatpack No Leads, Exposed Pad	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
MAX16904SATB55/V+	Thin Dual Flatpack No Leads, Exposed Pad	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
MAX16904SATB55/V+T	Thin Dual Flatpack No Leads, Exposed Pad	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
MAX16904SATB60/V+	Thin Dual Flatpack No Leads, Exposed Pad	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
MAX16904SATB60/V+T	Thin Dual Flatpack No Leads, Exposed Pad	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
MAX16904SATB80/V+	Thin Dual Flatpack No Leads, Exposed Pad	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
MAX16904SATB80/V+T	Thin Dual Flatpack No Leads, Exposed Pad	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
MAX16904SAUE33+	16-TSSOP_4.4_EP-4.4_MM	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
MAX16904SAUE33/V+	16-TSSOP_4.4_EP-4.4_MM	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
MAX16904SAUE33/V+T	16-TSSOP_4.4_EP-4.4_MM	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
MAX16904SAUE50+	16-TSSOP_4.4_EP-4.4_MM	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
MAX16904SAUE50+T	16-TSSOP_4.4_EP-4.4_MM	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
MAX16904SAUE50/V+	16-TSSOP_4.4_EP-4.4_MM	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
MAX16904SAUE50/V+T	16-TSSOP_4.4_EP-4.4_MM	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys

Part Models	Product Lifecycle	PCN

Aug 2, 2025 - 2505 PIN/ERRATA
		pcn_2505
MAX16904RATB50+	PRODUCTION
MAX16904RATB50/V+	PRODUCTION
MAX16904SATB33/V+	PRODUCTION
MAX16904SATB50+	PRODUCTION
MAX16904SATB50/V+	PRODUCTION
MAX16904SATB51/V+	PRODUCTION
MAX16904SATB52/V+	PRODUCTION
MAX16904SATB55/V+	PRODUCTION
MAX16904SATB60/V+	PRODUCTION
MAX16904SATB80/V+	PRODUCTION
Sep 22, 2017 - 1681A WAFER FAB
		pcn_1681a
MAX16904RATB50+	PRODUCTION
MAX16904RATB50+T	PRODUCTION
MAX16904RATB50/V+	PRODUCTION
MAX16904RATB50/V+T	PRODUCTION
MAX16904RAUE33/V+	PRODUCTION
MAX16904SATB33/V+	PRODUCTION
MAX16904SATB33/V+T	PRODUCTION
MAX16904SATB50+	PRODUCTION
MAX16904SATB50/V+	PRODUCTION
MAX16904SATB50/V+T	PRODUCTION
MAX16904SATB51/V+	PRODUCTION
MAX16904SATB51/V+T	PRODUCTION
MAX16904SATB52/V+	PRODUCTION
MAX16904SATB52/V+T	PRODUCTION
MAX16904SATB55/V+T	PRODUCTION
MAX16904SATB60/V+	PRODUCTION
MAX16904SATB60/V+T	PRODUCTION
MAX16904SATB80/V+	PRODUCTION
MAX16904SATB80/V+T	PRODUCTION
MAX16904SAUE33/V+	PRODUCTION
MAX16904SAUE50+T	PRODUCTION
MAX16904SAUE50/V+	PRODUCTION
MAX16904SAUE50/V+T	PRODUCTION
Jun 20, 2016 - 1612 ASSEMBLY
		pcn_1612
MAX16904RATB50+	PRODUCTION
MAX16904RATB50+T	PRODUCTION
Jun 18, 2021 - 2161 ASSEMBLY
		pcn_2161
MAX16904RATB50/V+	PRODUCTION
MAX16904RATB50/V+T	PRODUCTION
MAX16904SATB33/V+	PRODUCTION
MAX16904SATB33/V+T	PRODUCTION
MAX16904SATB50/V+	PRODUCTION
MAX16904SATB50/V+T	PRODUCTION
MAX16904SATB51/V+	PRODUCTION
MAX16904SATB51/V+T	PRODUCTION
MAX16904SATB52/V+	PRODUCTION
MAX16904SATB52/V+T	PRODUCTION
MAX16904SATB55/V+	PRODUCTION
MAX16904SATB55/V+T	PRODUCTION
MAX16904SATB60/V+	PRODUCTION
MAX16904SATB60/V+T	PRODUCTION
MAX16904SATB80/V+	PRODUCTION
MAX16904SATB80/V+T	PRODUCTION
May 11, 2022 - 2236N ASSEMBLY
		pcn_2236n
MAX16904RAUE33/V+	PRODUCTION
MAX16904RAUE33/V+T	PRODUCTION
MAX16904RAUE50+
MAX16904SAUE33/V+	PRODUCTION
Jan 17, 2018 - 1721E ASSEMBLY
		pcn_1721e
MAX16904RAUE33/V+	PRODUCTION
MAX16904SAUE33/V+	PRODUCTION
MAX16904SAUE50/V+	PRODUCTION
MAX16904SAUE50/V+T	PRODUCTION
Feb 11, 2025 - 2455B ASSEMBLY
		pcn_2455b
MAX16904SATB33/V+	PRODUCTION
MAX16904SATB33/V+T	PRODUCTION
MAX16904SATB51/V+	PRODUCTION
MAX16904SATB51/V+T	PRODUCTION
MAX16904SATB52/V+	PRODUCTION
MAX16904SATB52/V+T	PRODUCTION
MAX16904SATB55/V+	PRODUCTION
MAX16904SATB55/V+T	PRODUCTION
MAX16904SATB60/V+	PRODUCTION
MAX16904SATB60/V+T	PRODUCTION
MAX16904SATB80/V+	PRODUCTION
MAX16904SATB80/V+T	PRODUCTION
Jul 13, 2022 - 2236A ASSEMBLY
		pcn_2236a
MAX16904SAUE50+	PRODUCTION
MAX16904SAUE50+T	PRODUCTION
MAX16904SAUE50/V+	PRODUCTION
MAX16904SAUE50/V+T	PRODUCTION

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

Software Resources

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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

MAX16904 SIMPLIS Schematic

Evaluation Kits

Evaluation Kit for the MAX16904

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Features and Benefits

Up to +42V Input Supply Range
Delivers Up to 600mA Output Current
+5V Output
2.1MHz Switching Frequency
Proven PCB Layout
Fully Assembled and Tested

Product Details

The MAX16904 evaluation kit (EV kit) provides a proven design to evaluate the MAX16904 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 MAX16904RAUE50/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 MAX16904SAUE50/V+, MAX16904SAUE33/V+, and MAX16904RAUE33/V+ to evaluate these devices.

Applications

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

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Overview

Documentation

Data Sheet 1

Reliability Data 1

Design Note 1

Technical Articles 1