cs52845 ON Semiconductor, cs52845 Datasheet
cs52845
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cs52845 Summary of contents
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... CS52845 An undervoltage lockout ensures that V is stabilized before the REF output stage is enabled. In the CS52845 turn 8.4V and turn off at 7.6V. Other features include low start-up current, pulse-by-pulse current lim- iting, and a high-current totem pole output for driving capacitive loads, such as gate of a power MOSFET. ...
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Electrical Characteristics: -40 T 85° PARAMETER Reference Section Output Voltage T =25° Line Regulation 12 V Load Regulation 1 I Temperature Stability (Note 2) Total Output Variation Line, Load, Temp. (Note 2) Output Noise Voltage 10Hz ...
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Electrical Characteristics: Unless otherwise stated, specifications apply for -40 T PARAMETER Total Standby Current Start-Up Current Operating Supply Current V V Zener Voltage PWM Section Maximum Duty Cycle Minimum Duty Cycle Undervoltage Lockout Section Start Threshold Min. ...
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... Adjust 5k 4.7k Sense Adjust 8. 7.6V OFF I CC <15mA <1mA V ON Figure 1: Startup voltage for the CS52845. Test Circuit Open Loop Laboratory Test Fixture R T COMP V REF Sense OUT OSC Gnd C T Circuit Description During Undervoltage Lockout (Figure 1), the output driv biased to sink minor amounts of current ...
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V OSC OSC RESET Toggle F/F Output EA Output Switch Current Figure 2: Timing Diagram V upper V lower +2t off c ...
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... SO Narrow 8.75 1.27 (.050) 0.40 (.016) REF: JEDEC MS-012 Ordering Information Part Number Description CS52845ED8 8L SO Narrow CS52845EDR8 8L SO Narrow (tape & reel) CS52845ED14 14L SO Narrow CS52845EDR14 14L SO Narrow (tape & reel) Package Specification Thermal Data D English R JC Min Max Min R JA 4.80 .197 ...
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Notes ...
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Notes ...