Regulator and battery monitoring ICs address 2.3V lithium secondary batteries
Torex Semiconductor has developed the XC6240 charging regulator ICs and XC6140 battery voltage monitoring ICs, which are designed specifically for batteries compatible with CV (constant voltage) charging.
Recently, the market has seen the introduction of a variety of battery types, such as semi-solid state batteries and all-solid state batteries. Some of which are compatible with CV charging. Torex has developed the XC6240 charging regulator ICs and and XC6140 battery voltage monitoring ICs for CV charging of 2.3V-type lithium secondary batteries.
The charging regulator ICs have an output voltage compatible with the charging voltage of 2.3V-type lithium secondary batteries. They are capable of charging without exceeding the maximum charging voltage limit of secondary batteries even when considering voltage fluctuations, says Torex.
When not charging, the current from secondary batteries can be kept to a low level, enabling an extension to battery drive time.
The battery voltage monitoring ICs are set with a detection voltage and release voltage that are optimised for the properties of 2.3V-type lithium secondary batteries.
The detection voltage can be selected from a range of 1.6 to 2.2V, in accordance with the application and battery internal resistance. The release voltage is fixed at 2.475V and is set as a voltage to implement release when charging begins by a charging regulator.
Both of these products are available with compact, low-profile packages. The XC6240 is offered in USPN-4, USP-6B06 and the XC6140 is available in a USPQ-4B05 package. Both are also available in SSOT-24 packages, allowing them to be mounted in devices requiring smaller sizes or lower profiles, in a variety of applications.
Torex also provides an evaluation board using the XC6240 and XC6140 (pictured).
Torex Semiconductor provides CMOS power management ICs for battery powered and energy efficient applications. Torex specialises in CMOS analogue technology, with LDO voltage regulators, voltage detectors and DC/DC converters as the company’s core product offering.
