MAX641

PRODUCTION

5V Adjustable, 10W, CMOS, Step-Up, Switching Regulator Controller

Data Sheet (Rev. 0) Product Selection Table

Part Models: 6
1ku List Price: Starting From $3.52

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Overview

Fixed +5V, +12V, +15V Output Voltages
Adjustable Output with 2 Resistors
On-Chip Driver for High-Power External MOSFET

135μA Typ Operating Current
80% Typ Efficiency
8-Pin Narrow DIP and Narrow SO Packages

The MAX641/MAX642/MAX643 step-up switching regulators are designed for minimum component DC-DC converter circuits in the 5mW to 10W range.

Low-power applications require only an output filter capacitor and a small, low-cost inductor. An additional MOSFET or bipolar transistor is needed for high-power applications. Low battery detection circuitry is included on chip.

The MAX641/642/643 are preset for +5V, +12V, and + 15V outputs, respectively. However, the regulators can be set to other levels by adding 2 resistors. Maxim manufactures a broad line of step-up, step-down, and inverting DC-DC converters with features such as logiclevel shutdown, adjustable oscillator frequency, and external MOSFET drive. See Table 3 for a summary of other DC-DC converter products.

APPLICATIONS

Simple, High-Efficiency DC-DC Converters
Uninterruptible Board-Level Power Supplies
Power Conditioning for Battery Systems
Portable Instruments and Communications

Part Models: 6
1ku List Price: Starting From $3.52

Documentation

Data Sheet 2

MAX641-MAX643: 5V Adjustable, 10W, CMOS, Step-Up, Switching Regulator Controller Data Sheet (Rev.0) 03/01/1999

MAX641: Military Datasheet 09/11/2023

Design Note 4

Inductorless Switching Regulator Boosts Input Voltage 07/09/1998

Regulated Charge Pump Delivers 50mA 07/09/1998

Derive 12V From 8V to 15V Input 07/09/1998

RS-485 Adapter Converts Data Lines from Full- to Half-Duplex 01/06/2011

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
MAX641ACPA+	Plastic Dual-In-Line, Narrow (0.3in)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
MAX641ACSA+	Small-Outline IC, Narrow (0.15in)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
MAX641ACSA+T	Small-Outline IC, Narrow (0.15in)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
MAX641AEPA+	Plastic Dual-In-Line, Narrow (0.3in)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
MAX641AESA+	Small-Outline IC, Narrow (0.15in)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
MAX641AESA+T	Small-Outline IC, Narrow (0.15in)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys

Part Models	Product Lifecycle	PCN

May 22, 2018 - 1702N ASSEMBLY
		pcn_1702n
MAX641ACSA+	PRODUCTION
MAX641ACSA+T	PRODUCTION
Oct 30, 2020 - 1702R2 ASSEMBLY
		pcn_1702r2
MAX641AESA+	PRODUCTION
MAX641AESA+T	PRODUCTION

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

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