ML4810 Micro Linear, ML4810 Datasheet
ML4810
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ML4810 Summary of contents
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... High Frequency Power Supply Controller GENERAL DESCRIPTION The ML4810 and ML4811 High Frequency PWM Controllers are optimized for use in Switch Mode Power Supply designs running at frequencies to 1MHz. The ML4810/11 contain a unique overload protection circuit which helps to limit stress on the output devices and reliably performs a soft-start reset ...
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... ML4810, ML4811 PIN CONFIGURATION ML4810 16-Pin DIP (P16) 16-Pin SOIC (S16W) INV E/A OUT RESET RAMP 7 10 SOFT START 8 9 TOP VIEW PIN DESCRIPTION PIN NAME FUNCTION 1 INV Inverting input to error amp Non-inverting input to error amp. ...
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... Error Amplifier Output Current (Pin 3) ...................... 5mA Junction Temperature ............................................. 150 C Storage Temperature Range ..................... – 150 C Lead Temperature (Soldering 10 sec.) ..................... 260 C Thermal Resistance ( Plastic DIP ....................................................... 65 C/W Plastic SOIC .................................................... 65 C/W OPERATING CONDITIONS Temperature Range ML4810, ML4811 ...................................... 3.65k , C = 1000pF Operating Temperature Range. (Note CONDITIONS T ...
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... ML4810, ML4811 ELECTRICAL CHARACTERISTICS PARAMETER ERROR AMPLIFIER (Continued) CMRR PSRR Output Sink Current Output Source Current Output High Voltage Output Low Voltage Unity Gain Bandwidth Slew Rate PWM COMPARATOR Pin 8 Bias Current Duty Cycle Range Pin 3 Zero DC Threshold Delay to Output SOFT-START ...
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... FUNCTIONAL DESCRIPTION SOFT START AND CURRENT LIMIT The ML4810/11 offers a unique system of fault detection and reset. Most PWM controllers use a two threshold method which relies on the buildup of current in the output inductor during a fault. This buildup occurs because: 1. Inductor di/ small number when the switch is off under load fault (short circuit) conditions, since VL is small ...
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... ML4810, ML4811 OSCILLATOR The ML4811 oscillator charges the external capacitor (C with a current (I ) equal to 3/R . When the capacitor SET T voltage reaches the upper threshold (Ramp Peak), the comparator changes state and the capacitor discharges to the lower threshold (Ramp Valley) through Q1. While the capacitor is discharging, Q2 provides a high pulse. A discharge of the oscillator con be initiated by applying a high level to the Sync pin ...
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... The ML4811 Output Driver peak output high speed totem pole circuit designed to quickly switch the gates of capacitive loads, such as power MOSFET transistors 100 (3k R 100k ) –90 –180 1M 10M 100M ML4810, ML4811 OUT 0.2 0.8 0.4 0.6 TIME ( s) Figure 10. Unity Gain Slew Rate V ...
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... ML4810, ML4811 3 2 SOURCE 1 SINK 0 0 OUT (A) Figure 13. Saturation Curves 100 200 300 TIME (ns) Figure 15. Rise/Fall Time (C 8 1.0 1.5 Figure 14. Rise/Fall Time ( ( –2 400 500 = 10,000pF) Figure16. Supply Current vs. Temperature 120 160 TIME (ns) ...
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... ML4810, ML4811 9 ...
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... ML4810, ML4811 PHYSICAL DIMENSIONS 16 PIN 0.02 MIN (0.50 MIN) (4 PLACES) 0.170 MAX (4.32 MAX) 0.125 MIN (3.18 MIN) 0.400 - 0.414 (10.16 - 10.52) 16 PIN 0.024 - 0.034 (0.61 - 0.86) (4 PLACES) 0.012 - 0.020 0.090 - 0.094 (0.30 - 0.51) (2.28 - 2.39) 10 inches (millimeters) Package: P16 16-Pin PDIP 0.740 - 0.760 (18.79 - 19.31) 0.240 - 0.260 (6.09 - 6.61) 0.055 - 0.065 0.100 BSC (1.40 - 1.65) (2.54 BSC) ...
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... BSC (1.40 - 1.65) (2.54 BSC) 0.015 MIN (0.38 MIN) SEATING PLANE 0.016 - 0.022 (0.40 - 0.56) Package: S20 20-Pin SOIC 0.291 - 0.301 0.398 - 0.412 (7.39 - 7.65) (10.11 - 10.47) 0.095 - 0.107 (2.41 - 2.72) 0.005 - 0.013 SEATING PLANE (0.13 - 0.33) ML4810, ML4811 0.295 - 0.325 (7.49 - 8.26) 0.008 - 0.012 0º - 15º (0.20 - 0.31) 0º - 8º 0.022 - 0.042 0.007 - 0.015 (0.56 - 1.07) (0.18 - 0.38) 11 ...
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... ML4810, ML4811 ORDERING INFORMATION PART NUMBER ML4810CP ML4810CS ML4811CP ML4811CS is a registered trademark of Micro Linear Corporation © Micro Linear 1997 Products described in this document may be covered by one or more of the following patents, U.S.: 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; Japan: 2598946; 2619299. Other patents are pending. ...