Texas Instruments BQ29700DSET Li-Ion/Li-Pol Single-Cell Battery Protector IC, W

The Texas Instruments BQ29700DSET is a highly integrated battery cell protection device designed for single-cell lithium-ion (Li-Ion) and lithium-polymer (Li-Pol) applications. It provides accurate monitoring and robust protection against a range of fault conditions that can compromise battery safety and lifespan, all while maintaining exceptionally low current consumption.

This IC is engineered to safeguard battery cells by monitoring across external power FETs. It delivers precise protection against over-current during both high discharge and charge operations, as well as during overcharge scenarios. Additional protection features include monitoring for over-voltage (OVP), under-voltage (UVP), and short-circuit conditions (SCP), ensuring comprehensive cell safety.

A key benefit is its support for zero-voltage charging, allowing safe recovery of deeply depleted batteries. The device incorporates configurable fault detection voltage thresholds alongside adjustable fault trigger and recovery timers, providing design flexibility for various battery management systems. It operates with a minimal 4µA current in NORMAL mode and an ultra-low 100nA in shutdown mode, maximising battery life in portable devices.

Housed in a compact WSON-6 package, this green product is compliant with environmental standards, containing no antimony or bromine (no Sb/Br). Its wide input voltage range from VSS -0.3V to 12V makes it a versatile and reliable choice for modern power management designs.

Key Specifications

• Battery Compatibility: Li-Ion and Li-Polymer
• Cell Configuration: Single Cell
• Protection Features: Over-Current (Charge/Discharge), Over-Voltage, Under-Voltage, Short-Circuit
• Supply Voltage Range: 1.5V to 8V
• Operating Temperature: -40°C to +85°C
• Package Type: WSON-6 (Surface Mount)
• Normal Mode Current: 4µA
• Shutdown Current: