ml4832 Microsemi Corporation, ml4832 Datasheet
ml4832
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ml4832 Summary of contents
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... This system produces a power factor of better than 0.99 with low input current THD at > 95% efficiency. Special care has been taken in the design of the ML4832 to increase system noise immunity by using a high amplitude oscillator, and a current-fed multiplier. An overvoltage protection comparator inhibits the PFC section in the event of a lamp out or lamp failure condition ...
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... X X PIN# NAME 9 INTERRUPT GND 12 P GND 13 OUT B 14 OUT A 15 PFC OUT EA–/OVP charging current ML4832 18-Pin SOIC (S18) EA OUT 1 18 EA–/OVP IA OUT REF SINE CC IA PFC OUT 5 14 OUT A 6 ...
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... Junction Temperature ............................................. 150°C Storage Temperature Range...................... –65°C to 150°C Lead Temperature (Soldering 10 sec.) ..................... 260°C Thermal Resistance ( Plastic PDIP ..................................................... 70°C/W Plastic SOIC ................................................... 100°C/W OPERATING CONDITIONS –2V Temperature Range CC ML4832C .................................................. 0°C to 85°C = 15.8kW 1.5nF, C 1µ CONDITIONS I = 0mA, V ...
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... ML4832 ELECTRICAL CHARACTERISTICS PARAMETER GAIN MODULATOR Output Voltage (V ) MUL Output Voltage Limit Offset Voltage I Input Voltage SINE PFC CURRENT — LIMIT COMPARATOR Current-Limit Threshold Propagation Delay OSCILLATOR Initial Accuracy Voltage Stability Temperature Stability Total Variation Ramp Valley to Peak C Charging Current T C Discharge Current ...
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... OUT I = –20mA OUT I = –200mA OUT I = 10mA OUT 1000pF 15mA Start-up threshold –0. 12.5V 0V 2.3V, EA–/OVP LAMP FB IA OUT = open R = 16. 22.1k T SET V = 12.5V ML4832 MIN TYP MAX UNITS 0.4 0.7 1.0 V 7.0 7.3 7.7 V 0.1 µA 1.05 1.22 1.36 V 4.4 4.77 5.15 V 1.05 1.22 1.36 V 6.05 6.6 7.35 V 7.15 7.4 7.65 V 0.1 µA 2.4 2.5 2.6 V 2.65 2.75 2 ...
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... This allows for the used with a variety of different output networks. POWER FACTOR SECTION The ML4832 power factor section is an average current sensing boost mode PFC control circuit which is architecturally similar to that found in the ML4821. For detailed information on this control architecture, please refer to Application Note 16 and the ML4821 data sheet ...
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... Figure 3 shows the output configuration for the operational transconductance amplifiers path to ground or V transconductance amplifiers will introduce an offset error. 18 – 2. Figure 2. Compensation Network io = gmV IN Figure 4. Transconductance Amplifier Characteristics ML4832 the output of the CC C2 ...
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... Capacitor C1 as shown in Figure 2 is used to block the DC current to minimize the adverse effect of offsets. Slew rate enhancement is incorporated into all of the operational transconductance amplifiers in the ML4832. This improves the recovery of the circuit in response to power up and transient conditions. The response to large signals will be somewhat non-linear as the transconductance amplifiers change from their low to high transconductance mode ...
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... OFF I CC 5.5mA 0.34mA Figure 6. Typical VCC and ICC Waveforms when the ML4832 is Started with a Bleed Resistor from the Rectified AC Line and Bootstrapped from an Auxiliary Winding. (Continued) To help reduce ballast cost, the ML4832 includes a PIN6 temperature sensor which will inhibit ballast operation if is highest, the IC’ ...
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... ML4832 FUNCTIONAL DESCRIPTION the lamp fails to strike or is out of socket. Typically this time is set to be fairly long by choosing a large value LFB OUT is ignored by the oscillator until C threshold. The lamps are therefore driven to full power and then dimmed. The C pin is clamped to about 7.5V. ...
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... Magnetics Change TSD-882 been modified for ML4832 compatibility. The value changes and component additions made for ML4832 compatibility were for different amplifier compensation, bootstrap/bias and protection and do not effect the validity of the circuit description, operational information or equations. ...
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... ML4832 12 Figure 9. 220V Non-Dimming Ballast ML4832 ...
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... Figure 10. 220V Dimming Ballast ML4832 ML4832 13 ...
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... ML4832 PHYSICAL DIMENSIONS inches (millimeters) 18 PIN 0.045 MIN (1.14 MIN) (4 PLACES) 0.170 MAX (4.32 MAX) 0.125 MIN (3.18 MIN) 0.449 - 0.463 (11.40 - 11.76) 18 PIN 0.024 - 0.034 0.050 BSC (0.61 - 0.86) (1.27 BSC) (4 PLACES) 0.012 - 0.020 0.090 - 0.094 (0.30 - 0.51) (2.28 - 2.39) 14 Package: P18 18-Pin PDIP 0.890 - 0.910 (22.60 - 23.12) 0.240 - 0.260 (6.09 - 6.61) 0.050 - 0.065 ...
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... ORDERING INFORMATION PART NUMBER ML4832CP (End of Life) ML4832CS (Obsolete) © Micro Linear 1999 registered trademark of Micro Linear Corporation. All other trademarks are the 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; ...