ml4803cs-2 Microsemi Corporation, ml4803cs-2 Datasheet
ml4803cs-2
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ml4803cs-2 Summary of contents
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PFC and PWM Controller Combo GENERAL DESCRIPTION The ML4803 is a space-saving controller for power factor corrected, switched mode power supplies that offers very low start-up and operating currents. Power Factor Correction (PFC) offers the use of smaller, lower ...
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ML4803 PIN CONFIGURATION PIN DESCRIPTION PIN NAME FUNCTION 1 PFC OUT PFC driver output 2 GND Ground 3 I Current sense input to the PFC current SENSE limit comparator 4 VEAO PFC one-pin error amplifier input 2 ML4803 8-Pin PDIP ...
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ABSOLUTE MAXIMUM RATINGS Absolute maximum ratings are those values beyond which the device could be permanently damaged. Absolute maximum ratings are stress ratings only and functional device operation is not implied. I Current (average) ............................................. 40mA CC V MAX ............................................................... ...
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ML4803 ELECTRICAL CHARACTERISTICS SYMBOL PARAMETER PFC (Continued) Output High Impedance Output High Voltage Rise/Fall Time PWM Duty Cycle Range Output Low Impedance Output Low Voltage Output High Impedance Output High Voltage Rise/Fall Time SUPPLY V Clamp Voltage ( ...
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FUNCTIONAL DESCRIPTION The ML4803 consists of an average current mode boost Power Factor Corrector (PFC) front end followed by a synchronized Pulse Width Modulation (PWM) controller distinguished from earlier combo controllers by its low pin count, innovative input ...
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ML4803 FUNCTIONAL DESCRIPTION enough to trip the V OVP. The max current through this CC zener is 10mA. External series resistance is required in order to limit the current through this Zener in the case where the V voltage exceeds ...
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LEADING/TRAILING MODULATION current will ramp up. The effective duty cycle of the trailing edge modulation is determined during the ON time of the switch. Figure 2 shows a typical trailing edge control scheme. In the case of leading edge modulation, ...
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ML4803 TYPICAL APPLICATIONS COMP ´ ´ ´ COMP 330 COMP ´ ´ ZERO f ´ ´ p ´ 2 ...
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TYPICAL APPLICATIONS offset voltage to the current sense signal, which forces the duty cycle to zero at light loads. This offset prevents the PFC from operating in the DCM and forces pulse-skipping from CCM to no-duty, avoiding DMC operation. External ...
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ML4803 TYPICAL APPLICATIONS inductor. The V OVP comparator senses when this CC voltage exceeds 16V, and terminates the PFC output drive while disabling the VEAO current sink. Once the VEAO current sink is disabled, the VEAO voltage will charge unabated, ...
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C19 4.7nF 250VAC LINE F1 5A 250V C4 J1-1 R24 0.47µF BR1 470k 250VAC 600V 0.5W 4A NEUTRAL J1-2 C20 4.7nF 250VAC R3 0.15 R30 200 C29 0.01µ 0.1µF R13 5.62M R7 10 C23 ...
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ML4803 PHYSICAL DIMENSIONS 0.020 MIN (0.51 MIN) (4 PLACES) 0.170 MAX (4.32 MAX) 0.125 MIN (3.18 MIN) 0.017 - 0.027 (0.43 - 0.69) (4 PLACES) 0.055 - 0.061 (1.40 - 1.55) 12 inches (millimeters) Package: P08 8-Pin PDIP 0.365 - ...
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... PART NUMBER ML4803CP-1 ML4803CS-1 ML4803IP-1 ML4803IS-1 ML4803CP-2 ML4803CS-2 ML4803IP-2 ML4803IS-2 © Micro Linear 1999. property of their respective owners. Products described herein may be covered by one or more of the following U.S. patents: 4,897,611; 4,964,026; 5,027,116; 5,281,862; 5,283,483; 5,418,502; 5,508,570; 5,510,727; 5,523,940; 5,546,017; 5,559,470; 5,565,761; 5,592,128; 5,594,376; ...