MAX1517ETJ+T Maxim Integrated Products, MAX1517ETJ+T Datasheet
MAX1517ETJ+T
Specifications of MAX1517ETJ+T
Related parts for MAX1517ETJ+T
MAX1517ETJ+T Summary of contents
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... C to +100 C 32 Thin QFN 5mm x 5mm MAX1518ETJ - +100 C 32 Thin QFN 5mm x 5mm ________________________________________________________________ Maxim Integrated Products For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com. TFT-LCD DC-DC Converters with Operational Amplifiers 2.6V to 5.5V Input Supply Range 1 ...
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TFT-LCD DC-DC Converters with Operational Amplifiers ABSOLUTE MAXIMUM RATINGS IN, CTL to AGND ......................................................-0.3V to +6V COMP, FB, FBP, FBN, DEL, REF to AGND ....-0. PGND, BGND to AGND ......................................................±0. PGND ............................................................-0.3V to +14V SUP to ...
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ELECTRICAL CHARACTERISTICS (continued 3V 8V, PGND = AGND = BGND = SUP wise noted.) PARAMETER SYMBOL LX On-Resistance R LX Leakage Current LX Current Limit Current-Sense Transconductance Soft-Start Period Soft-Start Step Size OPERATIONAL ...
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TFT-LCD DC-DC Converters with Operational Amplifiers ELECTRICAL CHARACTERISTICS (continued 3V 8V, PGND = AGND = BGND = SUP wise noted.) PARAMETER SYMBOL FBP Line (IN) Regulation Error DRVP Sink Current I DRVP DRVP ...
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ELECTRICAL CHARACTERISTICS ( 8V, PGND = AGND = BGND = SUP PARAMETER SYMBOL IN Supply Range IN Undervoltage-Lockout Threshold IN Quiescent Current REF Output Voltage MAIN STEP-UP REGULATOR Output Voltage Range Operating Frequency ...
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TFT-LCD DC-DC Converters with Operational Amplifiers ELECTRICAL CHARACTERISTICS (continued 3V 8V, PGND = AGND = BGND = SUP PARAMETER SYMBOL FBP Effective Load-Regulation Error (Transconductance) FBP Line (IN) Regulation Error DRVP Sink Current ...
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Figure 5V 13V MAIN unless otherwise noted.) STEP-UP EFFICIENCY vs. LOAD CURRENT 100 13V OUT ...
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TFT-LCD DC-DC Converters with Operational Amplifiers (Circuit of Figure 5V 13V MAIN unless otherwise noted.) TIMER DELAY LATCH RESPONSE TO OVERLOAD MAX1516 toc06 55ms 0A 10ms/div 5V/div ...
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Figure 5V 13V MAIN unless otherwise noted.) POWER-UP SEQUENCE MAX1516 toc12 4ms/div 10V/div MAIN 20V/div SRC C: ...
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TFT-LCD DC-DC Converters with Operational Amplifiers NAME PIN MAX1516 MAX1517 MAX1518 1 SRC SRC SRC 2 REF REF REF 3 AGND AGND AGND 4 PGND PGND PGND 5 OUT1 OUT1 OUT1 6 NEG1 NEG1 NEG1 7 POS1 POS1 POS1 8 ...
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NAME PIN MAX1516 MAX1517 MAX1518 20 N.C. N.C. OUT5 COMP COMP COMP 25 FBP FBP FBP 26 DRVP DRVP DRVP 27 FBN FBN FBN 28 DRVN DRVN ...
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TFT-LCD DC-DC Converters with Operational Amplifiers Typical Operating Circuit The MAX1518 Typical Operating Circuit (Figure complete power-supply system for TFT LCDs. The cir- cuit generates a +13V source-driver supply and +24V and -8V gate-driver supplies. The input ...
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V IN 4.5V TO 5.5V C1 22µF R10 10Ω C18 0.1µF 180kΩ 220µF LX 0.1µF 6.8kΩ 0.1µ 332kΩ GOFF -8V/50mA 0.22µF R8 40.2kΩ 1% 0.22µF 0.033µF TO VCOM BACKPLANE Figure 1. Typical Operating Circuit ______________________________________________________________________________________ ...
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TFT-LCD DC-DC Converters with Operational Amplifiers V IN Figure 2. MAX1518 Functional Diagram 14 ______________________________________________________________________________________ STEP-UP CONTROLLER PGND COMP AGND MAX1518 DRVP GATE-ON CONTROLLER FBP SRC DEL COM SWITCH CONTROL CTL DRN DRVN GATE-OFF CONTROLLER ...
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OSCILLATOR TO FAULT LATCH Figure 3. Step-Up Regulator Functional Diagram This discharge condition forces the current through the inductor to ramp back down, transferring the energy stored in the magnetic field to the output capacitor and the load. The MOSFET ...
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TFT-LCD DC-DC Converters with Operational Amplifiers FROM CHARGE-PUMP V MAIN DRVP NPN CASCODE TRANSISTOR MAX1516 MAX1517 MAX1518 FBP Figure 4. Using Cascoded npn for Charge-Pump Output Voltages >28V Gate-Off Linear-Regulator Controller, REG N The gate-off linear-regulator controller (REG N) is ...
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Undervoltage Lockout (UVLO) The undervoltage-lockout (UVLO) circuit compares the input voltage at IN with the UVLO threshold (2.5V rising, 2.35V falling, typ) to ensure the input voltage is high enough for reliable operation. The 150mV (typ) hysteresis prevents supply transients ...
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TFT-LCD DC-DC Converters with Operational Amplifiers IN 5µA DEL REF CTL Figure 7. Switch-Control Block Fault Protection During steady-state operation, if the output of the main regulator or any of the linear-regulator outputs does not exceed its respective fault-detection threshold, ...
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Design Procedure Main Step-Up Regulator The minimum inductance value, peak current rating, and series resistance are factors to consider when selecting the inductor. These factors influence the con- verter’s efficiency, maximum output load capability, transient-response time, and output voltage ripple. ...
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TFT-LCD DC-DC Converters with Operational Amplifiers Output-Capacitor Selection The total output voltage ripple has two components: the capacitive ripple caused by the charging and discharg- ing of the output capacitance, and the ohmic ripple due to the capacitor’s equivalent series ...
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STEP-UP CONTROLLER PGND MAX1516 MAX1517 MAX1518 Figure 8. Operation with Output Voltages >13V Using Cascoded MOSFET The number of negative charge-pump stages is given by: − GOFF DROPOUT n = NEG V − ...
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TFT-LCD DC-DC Converters with Operational Amplifiers POSITIVE CHARGE-PUMP OUTPUT VOLTAGE vs 3-STAGE CHARGE PUMP 2-STAGE CHARGE PUMP 1-STAGE CHARGE PUMP ...
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The transconductance amplifier regulates the output voltage by controlling the pass transistor’s base cur- rent. The total DC loop gain is approximately: BIAS A ≅ × ...
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TFT-LCD DC-DC Converters with Operational Amplifiers Applications Information Power Dissipation An IC’s maximum power dissipation depends on the thermal resistance from the die to the ambient environ- ment and the ambient temperature. The thermal resis- tance depends on the IC ...
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TFT-LCD DC-DC Converters with TOP VIEW SRC REF AGND PGND OUT1 NEG1 POS1 N.C. N.C. = NOT INTERNALLY CONNECTED I.C. = INTERNALLY CONNECTED TOP VIEW SRC 1 REF 2 AGND 3 PGND 4 ...
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... Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. 26 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 2004 Maxim Integrated Products 0. ...