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CS3845GDR14 数据表(PDF) 1 Page - ON Semiconductor |
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CS3845GDR14 数据表(HTML) 1 Page - ON Semiconductor |
1 / 12 page © Semiconductor Components Industries, LLC, 2001 June, 2001 – Rev. 3 1 Publication Order Number: CS2844/D CS2844, CS3844, CS2845, CS3845 Current Mode PWM Control Circuit with 50% Max Duty Cycle The CS3844/45 provides all the necessary features to implement off–line fixed frequency current–mode control with a minimum number of external components. The CS3844 family incorporates a new precision temperature–controlled oscillator to minimize variations in frequency. An internal toggle flip–flop, which blanks the output every other clock cycle, limits the duty–cycle range to less than 50%. An undervoltage lockout ensures that VREF is stabilized before the output stage is enabled. In the CS2844/CS3844 turn on occurs at 16 V and turn off at 10 V. In the CS2845/CS3845 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 • Temp. Compensated Oscillator • 50% Max Duty–Cycle Clamp • V REF Stabilized Before Output Stage Is Enabled • Low Start–Up Current • Pulse–By–Pulse Current Limiting • Improved Undervoltage Lockout • Double Pulse Suppression • 1.0% Trimmed Bandgap Reference • High Current Totem Pole Output http://onsemi.com x = 2 or 3 y = 4 or 5 A = Assembly Location WL, L = Wafer Lot YY, Y = Year WW, W = Work Week DIP–8 N SUFFIX CASE 626 1 8 SO–8 D SUFFIX CASE 751 1 8 SO–14 D SUFFIX CASE 751A 1 14 1 8 CSx84yN AWL YYWW MARKING DIAGRAMS 1 384yD ALYW 8 1 CSx84yD14 AWLYWW 14 See detailed ordering and shipping information in the package dimensions section on page 7 of this data sheet. ORDERING INFORMATION SO–16L DW SUFFIX CASE 751G 1 16 1 CSx84yDW AWLYYWW 16 |
类似零件编号 - CS3845GDR14 |
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