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MC33342DR2 bảng dữ liệu(PDF) 1 Page - ON Semiconductor |
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1 / 16 page © Semiconductor Components Industries, LLC, 2005 July, 2005 − Rev. 7 1 Publication Order Number: MC33340/D 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 • 177 seconds Fast Change Holdoff Time (MC33340) • 708 seconds Fast Change Holdoff Time (MC33342) • Pb−Free Packages are Available Figure 1. Simplified Block Diagram This device contains 2,512 active transistors. DC Input VCC Undervoltage Lockout Over Temp Latch Battery Detect Temp Detect Time/ Temp Select Vsen Vsen Gate Fast/ Trickle Voltage to Frequency Converter − DV Detect Counter Timer Battery Pack Internal Bias VCC VCC GND Q R S t1/Tref High t2/Tsen t3/Tref Low 7 6 5 8 4 3 2 1 High Low Vsen Gate F/T Over Under t1 t2 t3 t/T Ck F/V R PDIP−8 P SUFFIX CASE 626 1 8 SOIC−8 NB SUFFIX CASE 751 1 8 MARKING DIAGRAMS x = 0 or 2 A = Assembly Location L = Wafer Lot Y = Year W = Work Week G = Pb−Free Package 1 8 MC3334xP AWL YYWW (Top View) PIN CONNECTIONS VCC 8 Vsen Input Vsen Gate Output Fast/Trickle Output Gnd t1/Tref High t2/Tsen t3/Tref Low 7 6 5 1 2 3 4 See detailed ordering and shipping information in the package dimensions section on page 13 of this data sheet. ORDERING INFORMATION http://onsemi.com 3334x ALYWX G 1 8 |
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Mô tả tương tự - MC33342DR2 |
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