MAX1678

PRODUCTION

1 Cell to 2 Cell, Low-Noise, High-Efficiency, Step-Up DC-DC Converter

Efficient 1-Cell Step-Up Converter for Pagers

Data Sheet (Rev. 0) Product Selection Table

Part Models: 2
1ku List Price: Starting From $2.50

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Part Details

0.87V Guaranteed Start-Up
Up to 90% Efficiency
Built-In Synchronous Rectifier (no external diode)
Ultra-Small µMAX Package, 1.1mm High
37µA Quiescent Current (85µA from 1.5V battery)
2µA Logic-Controlled Shutdown
Power-Fail Detector
Dual Mode™ Output: Fixed 3.3V
Dual Mode Adjustable 2V to 5.5V
45mA Output Current at 3.3V for 1-Cell Input
90mA Output Current at 3.3V for 2-Cell Input
Inductor-Damping Switch Suppresses EMI

Part Models: 2
1ku List Price: Starting From $2.50

Documentation

Data Sheet 1

MAX1678: 1 Cell to 2 Cell, Low-Noise, High-Efficiency, Step-Up DC-DC Converter Data Sheet (Rev.0) 07/01/1998

Reliability Data 1

MAX1678 Reliability Data 01/12/2023

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
MAX1678EUA+	Micro-MAX, Thin Shrink Small-Outline	Material Declaration Reliablity Data	Ultra Librarian SamacSys
MAX1678EUA+T	Micro-MAX, Thin Shrink Small-Outline	Material Declaration Reliablity Data	Ultra Librarian SamacSys

Part Models	Product Lifecycle	PCN

Mar 13, 2023 - 2361N WAFER FAB
		pcn_2361n
MAX1678EUA+	PRODUCTION
MAX1678EUA+T	PRODUCTION
Sep 19, 2018 - 1753N ASSEMBLY
		pcn_1753n
MAX1678EUA+	PRODUCTION
MAX1678EUA+T	PRODUCTION

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

Evaluation Kits

Evaluation Kit for the MAX1678

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Features and Benefits

0.87V to V_OUT Input Range
Synchronous Rectified-No External Diode Required
3.3V Output Voltage (or Adjustable)
100mA Output
90% Efficiency
2µA Shutdown Current
Small Surface-Mount Components
Inductor Damping Switch Suppresses EMI

Product Details

The MAX1678 evaluation kit (EV kit) provides a regulated 3.3V output while operating on input voltages as low as 0.7V with guaranteed start-up at 0.87V. The input source can be a 1 or 2-cell battery or a DC supply. Efficiency is typically 90% with output loads up to 100mA.

The kit uses surface-mount components and is fully assembled and tested for quick evaluation. Jumpers are provided for selecting an adjustable output voltage and for shutdown control.

Applications

Pagers
Personal Medical Monitors
Pointing Devices
Remote Controls
Single-Cell Battery-Powered Devices

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