ML4825 Micro Linear, ML4825 Datasheet
ML4825
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ML4825 Summary of contents
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... High Frequency Power Supply Controller GENERAL DESCRIPTION The ML4825 High Frequency PWM Controller controller optimized for use in Switch Mode Power Supply designs running at frequencies to 1MHz. Propagation delays are minimal through the comparators and logic for reliable high frequency operation while slew rate and bandwidth are maximized on the error amplifier ...
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... OUT A GND I /SD LIM PIN NAME 9 (12) I LIM 10 (13) GND 11 (14) OUT A 12 (15) PWR GND Return for the high current totem 13 (17 (18) OUT B for T 15 (19 (20) 5.1V REF ML4825 20-Pin PLCC OUT B CLOCK ...
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... ML4825IX, ML4825CX ....................................... 150 C Storage Temperature Range ..................... – 150 C Lead Temperature (soldering 10 sec.) ..................... 260 C Thermal Resistance ( Plastic DIP or SOIC ......................................... 65 C/W Plastic Chip Carrier (PCC) ................................ 60 C/W OPERATING CONDITIONS Temperature Range ML4825CX ................................................ ML4825IX .............................................. – 1000pF Operating Temperature Range CONDITIONS 10V < ...
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... ML4825 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 Ramp Bias Current Duty Cycle Range E/A OUT Zero DC Threshold Delay to Output SOFT START ...
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... FUNCTIONAL DESCRIPTION OSCILLATOR The ML4825 oscillator charges the external capacitor (C with a current (I ) equal to 3/R . When the capacitor SET SET 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 ...
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... Inhibit line) for ease in implementing the soft start function. OUTPUT DRIVER STAGE The ML4825 Output Driver peak output high speed totem pole circuit designed to quickly switch the gates of capacitive loads, such as power MOSFET transistors. ...
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... Figure 9. Rise/Fall Time (C = 1000pF –60 –40 – 100 TEMPERATURE (°C) Figure 11. Supply Current vs. Temperature 0 –0 200 0 Figure 10. Rise/Fall Time (C 120 140 ML4825 –2 100 200 300 400 500 TIME (ns) = 10,000pF ...
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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: S16W 16-Pin Wide SOIC 0.291 - 0.301 0.398 - 0.412 (7.39 - 7.65) (10.11 - 10.47) 0.050 BSC (1.27 BSC) 0.095 - 0.107 (2.41 - 2.72) 0º - 8º 0.005 - 0.013 SEATING PLANE (0.13 - 0.33) ML4825 0.295 - 0.325 (7.49 - 8.26) 0.008 - 0.012 0º - 15º (0.20 - 0.31) 0.022 - 0.042 0.009 - 0.013 (0.56 - 1.07) (0.22 - 0.33) 11 ...
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... PART NUMBER ML4825CP ML4825CS ML4825CQ ML4825IP ML4825IS ML4825IQ © Micro Linear 1997 is a registered trademark of Micro Linear Corporation 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. ...