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CS52843ED14 Arkusz danych(PDF) 1 Page - ON Semiconductor |
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CS52843ED14 Arkusz danych(HTML) 1 Page - ON Semiconductor |
1 / 9 page © Semiconductor Components Industries, LLC, 2006 July, 2006 − Rev. 4 1 Publication Order Number: CS52843/D CS52843 Current Mode PWM Control Circuit The CS52843 provides all the necessary features to implement off−line fixed frequency current−mode control with a minimum number of external components. The CS52843 incorporates a new precision temperature−controlled oscillator to minimize variations in frequency. An undervoltage lockout ensures that VREF is stabilized before the output stage is enabled. In the CS52843 turn on is at 8.4 V and turn off at 7.6 V. Other features include low start−up current, pulse−by−pulse current limiting, and a high−current totem pole output for driving capacitive loads, such as gate of a power MOSFET. The output is low in the off state, consistent with N−channel devices. Features • Optimized for Off−Line Control • Internally Temperature Compensated Oscillator • VREF Stabilized before Output Stage is Enabled • Very Low Start−Up Current 300 μA (typ) • Pulse−by−Pulse Current Limiting • Improved Undervoltage Lockout • Double Pulse Suppression • 2.0% 5.0 Volt Reference • High Current Totem Pole Output http://onsemi.com A = Assembly Location WL, L = Wafer Lot YY, Y = Year WW, W = Work Week PIN CONNECTIONS AND MARKING DIAGRAMS SO−8 D SUFFIX CASE 751 VREF COMP 1 VFB Sense OSC VCC VOUT GND Device Package Shipping ORDERING INFORMATION CS52843ED8 SO−8 95 Units/Rail CS52843EDR8 SO−8 CS52843ED14 SO−14 2500 Tape & Reel CS52843EDR14 SO−14 2500 Tape & Reel 55 Units/Rail 1 8 SO−14 D SUFFIX CASE 751A GND OSC Pwr GND NC VOUT Sense VCC Pwr NC 1 14 VCC VFB NC NC VREF COMP 1 14 |
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