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MC33340

ON Semiconductor
Part Number MC33340
Manufacturer ON Semiconductor
Description (MC33340 / MC33342) Battery Fast Charge Controllers
Published Apr 20, 2007
Detailed Description MC33340, MC33342 Battery Fast Charge Controllers The MC33340 and MC33342 are monolithic control IC’s that are specifical...
Datasheet PDF File MC33340 PDF File

MC33340
MC33340

Overview
MC33340, MC33342 Battery Fast Charge Controllers The MC33340 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 MC33340 and the MC33342.
The MC33340 has a typical holdoff time of 177 seconds and the MC33342 has a typical holdoff time of 708 seconds.
• 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 www.
DataSheet4U.
com • 177 seconds Fast Change Holdoff Time (MC33340) • 708 seconds Fast Change Holdoff Time (MC33342) • Pb−Free Packages are Available http://onsemi.
com MARKING DIAGRAMS 8 PDIP−8 P SUFFIX CASE 626 1 SOIC−8 NB SUFFIX CASE 751 x A L Y W G 1 8 3334x ALYWX G MC3334xP AWL YYWW 8 8 1 1 = 0 or 2 = Assembly Location = Wafer Lot = Year = Work Week = Pb−Free Package PIN CONNECTIONS Vsen Input 1 Vsen Gate Output 2 8 VCC 7 t1/Tref High 6 t2/Tsen 5 t3/Tref Low (Top View) Regulator DC Input VCC Internal Bias Vsen 1 Voltage to Frequency Converter Ck High Battery Detect Low Under F/V R Over R S Temp Detect t1 −DV Detect Counte...


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