MC33340DG Datasheet

Battery Management


The MC33340DG and MC33342 are monolithic control IC’s that are specifically designed as fast charge controllers for Nickel Cadmium (NiCd) and Nickel Metal Hydride (NiMH) batteries. These devices feature negative slope voltage detection as the primary means for fast charge termination. Accurate detection is ensured by an output that momentarily interrupts the charge current for precise voltage sampling. An additional secondary backup termination method can be selected that consists of either a programmable time or temperature limit. Protective features include battery over and undervoltage detection, latched over temperature detection, and power supply input undervoltage lockout with hysteresis. Fast charge holdoff time is the only difference between the MC33340DG and the MC33342. The MC33340DG has a typical holdoff time of 177 seconds and the MC33342 has a typical holdoff time of 708 seconds. MC33340DG Features • Negative Slope Voltage Detection with 4.0 mV Sensitivity• Accurate Zero Current Battery Voltage Sensing• High Noise Immunity with Synchronous VFC/Logic• Programmable 1 to 4 Hour Fast Charge Time Limit• Programmable Over/Undertemperature Detection• Battery Over and Undervoltage Fast Charge Protection• Power Supply Input Undervoltage Lockout with Hysteresis• Operating Voltage Range of 3.25 V to 18 V• 177 seconds Fast Change Holdoff Time (MC33340)• 708 seconds Fast Change Holdoff Time (MC33342)• Pb−Free Packages are Available


[{"Name":"Manufacturer ","Value":"ON Semiconductor "},{"Name":"Product Category","Value":"Battery Management "},{"Name":"Battery Type","Value":"NiCD, NiMH "},{"Name":"Operating Supply Voltage","Value":"3.25 V to 18 V "},{"Name":"Maximum Operating Temperature","Value":"+ 85 C "},{"Name":"Minimum Operating Temperature","Value":"- 25 C "},{"Name":"Package / Case","Value":"SOIC-8 "},{"Name":"Packaging","Value":"Tube "},{"Name":"Mounting Style","Value":"SMD/SMT "}]

Manufacturer information


Fairchild has a rich history as a pioneer in the semiconductor industry and that pioneering spirit endures today. In an era where diversity can dilute focus and hamper innovation, we specialize in the development and manufacturing of a complete portfolio of low- to high-power solutions for the mobile, industrial, cloud, automotive, lighting, and computing industries. Fairchild is one of the most reliable partners in the industry, offering the shortest time from concept to silicon, expert FAEs for customer support, and a flexible, multi-source supply chain. Our vision is clear – anticipate the power efficiencies demanded by tomorrow’s electronic products and deliver an amazing design experience

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