Description

The MAX6443US29L+T is a battery monitor with an integrated microprocessor (µP) supervisor. It is designed to monitor the voltage of single-cell Li+ or multicell alkaline/NiCd/NiMH batteries. The MAX6443US29L+T features factory-trimmed VBATT threshold options and is immune to short battery voltage transients. It has a low current consumption of 2.5μA typical at 3.6V and offers both single and dual low-battery output options. The device also includes an independent µP supervisor that monitors VCC and provides an active-low reset output. It operates in an extended temperature range of -40°C to +85°C and is available in small 6- and 8-pin SOT23 packages.

Specifications and features

• Factory-Trimmed VBATT Threshold Options for monitoring single-cell Li+ or multicell alkaline/NiCd/NiMH applications
• Immune to short battery voltage transients
• Low current consumption of 2.5μA typical at 3.6V
• Single and dual low-battery output options
• 150ms minimum LBO timeout period
• Independent µP reset with manual reset function
• Factory-set reset thresholds for monitoring VCC from 1.8V to 3.3V
• Available with 150ms (min) and 1.2s (min) VCC reset timeout period options
• Operating temperature range of -40°C to +85°C
• Small 6- and 8-pin SOT23 packages
• No external components required

Application Scenarios

The MAX6443US29L+T is suitable for various battery-powered systems, including single-cell Li+ or two-/three-cell NiMH, NiCd, and alkaline batteries. It can be used in applications such as cell phones/cordless phones, portable medical devices, electronic toys, pagers, PDAs, and MP3 players.

Comparison

• Integrated microprocessor (µP) supervisor
• Factory-trimmed VBATT threshold options
• Immune to short battery voltage transients
• Low current consumption
• Single and dual low-battery output options
• Independent µP reset with manual reset function
• Wide operating temperature range
• Small package size

• No mention of battery protection features
• Limited voltage monitoring range (1.8V to 3.3V)