ML4831CP Micro Linear, ML4831CP Datasheet
ML4831CP
Related parts for ML4831CP
ML4831CP Summary of contents
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... The IC controls lamp output through either frequency modulation using lamp current feedback. The ML4831 is designed using Micro Linear‘s Semi- Standard tile array technology. Customized versions of this IC, optimized to specific ballast architectures can be made available. Contact Micro Linear or an authorized representative for more information ...
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ML4831 PIN CONFIGURATION PIN DESCRIPTION PIN# NAME FUNCTION 1 EA OUT PFC Error Amplifier output and compensation node 2 IA OUT Output and compensation node of the PFC average current transconductance amplifier. 3 I(SINE) PFC gain modulator input. 4 IA+ ...
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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. Supply Current (I ) ............................................... 75mA CC Output Current, ...
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ML4831 ELECTRICAL CHARACTERISTICS PARAMETER Oscillator Initial accuracy Voltage stability Temperature stability Total Variation Ramp Valley to Peak C(T) Charging Current (FM Modes) C(T) Discharge Current Output Drive Deadtime Reference Section Output Voltage Line regulation Load regulation Temperature stability Total Variation ...
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ELECTRICAL CHARACTERISTICS PARAMETER OVP Comparator (Pin 18) OVP Threshold Hysteresis Propagation Delay Outputs Output Voltage Low Output Voltage High Output Voltage Low in UVLO Output Rise/Fall Time Under-Voltage Lockout and Bias Circuits IC Shunt Voltage (V ) CCZ V Load ...
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ML4831 AVERAGE CURRENT AND OUTPUT VOLTAGE REGULATION The PWM regulator in the PFC Control section will act to offset the positive voltage caused by the multiplier output by producing an offsetting negative voltage on the current sense resistor at Pin ...
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Figure 3 shows the output configuration for the operational transconductance amplifiers. CURRENT MIRROR IN OUT gmV gmV IN IQ – OUT CURRENT MIRROR Figure 3. Output Configuration A DC path to ground or VCC ...
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ML4831 The oscillator’s minimum frequency is set when I where OSC This assumes that t >> CHG DIS When LFB OUT is high and the minimum ...
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R(SET) R(X)/C( C(X) – 1.2/3.4 R(X) 6.8 + – 1.2/6.8 INT – REF Figure 7. Lamp Preheat and Interrupt Timers 6.8 3.4 R(X)/C(X) 1.2 .65 0 HEAT DIMMING LOCKOUT 7.5 INT INHIBIT LFB OUT ...
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ML4831 APPLICATIONS POWER FACTOR CORRECTED FLUORESCENT DIMMING LAMP BALLAST Figure 9. Typical Application: 2-Lamp Isolated Dimming Ballast with Active Power Factor Correction for 120VAC Input 10 ML4831 ...
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TABLE 1: PARTS LIST FOR THE ML4831EVAL EVALUATION KIT CAPACITORS QTY. REF. DESCRIPTION 2 C1, 2 3.3nF, 125VAC, 10%, ceramic, “Y” capacitor 1 C3 0.33 F, 250VAC, “X”, capacitor 4 C4 0.1 F, 50V, 10%, ceramic capacitor ...
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... Secondary = 50 turns 30AWG magnet wire, start pin #5, end pin #8 12 MFR. Yageo Yageo Dale Yageo Bourns Motorola Motorola GI Motorola Micro Linear IR = 3mH, Custom Coils P/N 5037 or Coiltronics P/N CTX05-12539-1 PRI (Continued) PART NUMBER 100K-Q 681K-Q SMA4-10K-1 33-Q 3386P-253-ND 1N4007TR 1N4001TR BYV26C 1N4148TR ML4831CP IR720 ...
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TABLE 1: PARTS LIST FOR ML4831EVAL EVALUATION KIT MAGNETICS: (Continued) QTY. REF. DESCRIPTION Inductor, L PRI E24/25 core set, TDK PC40 material 10 pin horizontal bobbin (Plastron #0722B-31-80) Wind as follows: 1st: 170T of 25AWG magnet wire; ...
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... MIN (3.18 MIN) ORDERING INFORMATION PART NUMBER ML4831CP © Micro Linear 1997 is a registered trademark of Micro Linear Corporation Micro Linear 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; ...