MAX8900A, MAX8900B Switch-mode chargers with JEITA-compliant battery-temperature monitoring for mobile devices

Switch-mode chargers reduce charge time and heat for portable devices.

Maxim's JEITA-compliant battery chargers minimize solution size and heat in space-constrained consumer electronics.

SUNNYVALE, CA—May 3, 2010—Maxim Integrated Products (NASDAQ: MXIM) introduces the MAX8900A/MAX8900B switch-mode DC-DC chargers with JEITA*-compliant battery-temperature monitoring for safely charging 1-cell lithium-ion (Li+) or lithium-polymer (Li-Poly) batteries. These are the first chargers to integrate ±20V overvoltage protection, which allows them to provide added safety and reliability without external switches. The MAX8900A/MAX8900B operate at a high switching frequency of 3.25MHz to allow the use of tiny external components. They deliver up to 1.2A of charge current to the battery from 3.4V to 6.3V (MAX8900A) or 3.4V to 8.7V (MAX8900B) without generating excessive heat. Low heat and small solution size make these chargers ideal for space-constrained portable devices such as smartphones, Bluetooth? headsets, portable media players (PMPs), and mobile Internet devices (MIDs).

The maximum charge current for MAX8900A/MAX8900B can be programmed from 50mA to 1200mA using a small external resistor. Other charger parameters, such as the safety timer and prequalification current, are also adjustable to provide maximum flexibility for system designers to meet their application requirements.

The MAX8900A/MAX8900B are available in a tiny, 2.44mm x 2.67mm x 0.64mm, 40-bump wafer-level package (WLP) with a 0.4mm pitch, and are fully specified over the -40°C to +85°C extended temperature range. Prices start at $1.65 (1000-up, FOB USA). An evaluation kit is available to speed designs.

Maxim Integrated Products is a publicly traded company that designs, manufactures, and sells high-performance semiconductor products. The Company was founded over 25 years ago with the mission to deliver innovative analog and mixed-signal engineering solutions that add value to its customers' products. To date, it has developed over 6300 products serving the industrial, communications, consumer, and computing markets.

MAX8900,MAX8900A, MAX8900B,pdf:http://www.makelele.cn/soft/39/2010/2010050474314.html