LT3799EMSE#PBF Linear Technology, LT3799EMSE#PBF Datasheet
LT3799EMSE#PBF
Specifications of LT3799EMSE#PBF
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LT3799EMSE#PBF Summary of contents
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... LED Applications IN L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and True Color PWM is a trademark of Linear Technology Corporation. All other trademarks are the property of their respective owners. Patents pending. TYPICAL APPLICATION TRIAC Dimmable 20W LED Driver ...
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... LT3799I ............................................. –40°C to 125°C Storage Temperature Range .................. –65°C to 150°C ORDER INFORMATION LEAD FREE FINISH TAPE AND REEL LT3799EMSE#PBF LT3799EMSE#TRPBF LT3799IMSE#PBF LT3799IMSE#TRPBF Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container. ...
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ELECTRICAL CHARACTERISTICS temperature range, otherwise specifications are at T PARAMETER FB Pin Bias Current CTRL1/CTRL2/CTRL3 Pin Bias Current SENSE Current Limit Threshold SENSE Input Bias Current Current Loop Voltage Gain CT Pin Charge Current CT Pin Discharge Current CT Pin ...
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LT3799 TYPICAL PERFORMANCE CHARACTERISTICS V Start-Up Voltage IN vs Temperature 24.0 23.5 23.0 22.5 22.0 50 –50 – 100 TEMPERATURE (°C) 3799 G01 V vs Temperature REF 2.100 2.075 2.050 2.025 2.000 NO LOAD 1.975 200μA LOAD ...
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TYPICAL PERFORMANCE CHARACTERISTICS CT Pin Charge Current vs Temperature –50 – 100 TEMPERATURE (°C) 3799 G09 CT Pin High Threshold vs Temperature 1.5 1.4 1.3 1.2 1.1 1.0 50 ...
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LT3799 TYPICAL PERFORMANCE CHARACTERISTICS LED Current vs Input Voltage 1.20 PAGE 17 SCHEMATIC: OPTIMIZED FOR 120V 1.15 1.10 1.05 1.00 0.95 0.90 0.85 0.80 90 100 110 120 130 140 3799 G18 Power Factor vs ...
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PIN FUNCTIONS V (Pin 11): Input Voltage. This pin supplies current to IN the internal start-up circuitry and to the INTV pin must be locally bypassed with a capacitor. A 25V shunt regulator is internally connected to this pin. INTV ...
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LT3799 BLOCK DIAGRAM S&H CT FAULT 6 A3 DETECTION C4 FAULT – + 600mV – + COMP – SW1 COMP 8 – CTRL1 + CTRL2 + ...
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OPERATION The LT3799 is a current mode switching controller IC designed specifically for generating an average current output in an isolated flyback topology. The special problem normally encountered in such circuits is that information relating to the output voltage and ...
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LT3799 OPERATION converted to a current into the multiplier with the V/I converter, A6. Since A7’s output is constant, the output of the multiplier is proportional to A6 and can be ignored. The output of the multiplier controls the peak ...
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OPERATION MOSFET off when the TRIAC is off, this power device is kept on and sinks the current to properly load the TRIAC. When the TRIAC turns on, the V IN_SENSE and enables the loop, but the current comparator is ...
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LT3799 OPERATION The V pin supplies a 2V reference voltage to be used REF with the control pins. To set an output current, a resistor divider is used from the 2V reference to one of the control pins. The following ...
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OPERATION a blanking time of between 600ns and 2.25μs is applied after the switch turns off, depending on the current limit. The detector looks for 40μA of current through the DCM pin due to falling voltage on the third winding ...
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LT3799 OPERATION not solve the problem completely for other supply voltages. Another systematic error is that the current comparator cannot instantaneously turn off the main power device. This delay time leads to primary current overshoot. This overshoot is less of ...
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... Fortunately, most magnetic component manufacturers are capable of guaranteeing a turns ratio tolerance better. Linear Technology has worked with several leading magnetic component manufacturers to produce predesigned flyback transformers for use with the LT3799. Table 1 shows the details of several of these transformers ...
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LT3799 OPERATION The secondary diode stress may be as much • due to the anode of the diode ringing OUT IN PS with the secondary leakage inductance snubber in parallel with the ...
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TYPICAL APPLICATIONS L2 800μH L1 BR1 33mH C1 90V 0.068μF TO 265V AC C2 0.1μF R18 100k FAULT BR1: DIODES, INC. HD06 D1: CENTRAL SEMICONDUCTOR CMR1U-06M D2, D3: DIODES INC. BAV20W DR: CENTRAL SEMICONDUCTOR CMR1U-02M Z1: FAIRCHILD SMBJ170A Z2: CENTRAL ...
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LT3799 TYPICAL APPLICATIONS L1 3.3mH C1 R20, 10k 33nF L1 BR1 3.3mH R21, 10k 90V TO 265V L2, 3.3mH AC 22nF BR1: DIODES, INC. HD06 D1: CENTRAL SEMICONDUCTOR CMR1U-06M D2, D3: CENTRAL SEMICONDUCTOR CMMSHI-100 D4: CENTRAL SEMICONDUCTOR CMSH2-40L Z1: FAIRCHILD ...
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... LEAD COPLANARITY (BOTTOM OF LEADS AFTER FORMING) SHALL BE 0.102mm (.004") MAX Information furnished by Linear Technology Corporation is believed to be accurate and reliable. However, no responsibility is assumed for its use. Linear Technology Corporation makes no representa- tion that the interconnection of its circuits as described herein will not infringe on existing patent rights. ...
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... CC C9 0.10Ω C8 4.7μF 2.2nF – 3799 TA04 = 60V, Dimming: 3000:1 True Color PWM, OUT(MAX) = 100V, Dimming: 3000:1 True Color PWM, OUT(MAX) < 1μA, SD < 1μA, SD < 1μA, SD < 1μ 0411 • PRINTED IN USA © LINEAR TECHNOLOGY CORPORATION 2011 3799f ...