MAX8521ETP Maxim Integrated Products, MAX8521ETP Datasheet
MAX8521ETP
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MAX8521ETP Summary of contents
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... Synchronization (MAX8521) Ordering Information PART TEMP RANGE MAX8520ETP+ -40°C to +85°C 20 TQFN - MAX8521EBX -40°C to +85° -40°C to +85°C 20 TQFN - MAX8521ETP+ MAX8521EWX+ -40°C to +85°C 36 WLP ** Denotes a lead(Pb)-free/RoHS-compliant package Exposed pad. ** Four center bumps depopulated. Typical Operating Circuit INPUT V LX1 ...
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Smallest TEC Power Drivers for Optical Modules ABSOLUTE MAXIMUM RATINGS V to GND ..............................................................-0.3V to +6V DD SHDN, MAXV, MAXIP, MAXIN, CTLI to GND .........................................................-0.3V to +6V COMP, FREQ, OS1, OS2, CS, REF, ITEC to GND...........................................-0. PVDD1, PVDD2 ...
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Smallest TEC Power Drivers for Optical ELECTRICAL CHARACTERISTICS (continued 5V, 1MHz mode (Note 4). PGND1 = PGND2 = GND, CTLI = MAXV = MAXIP = MAXIN = REF, SHDN DD PVDD1 PVDD2 ...
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Smallest TEC Power Drivers for Optical Modules ELECTRICAL CHARACTERISTICS ( 5V, 1MHz mode (Note 4). PGND1 = PGND2 = GND, CTLI = MAXV = MAXIP = MAXIN = REF, SHDN DD PVDD1 PVDD2 ...
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Smallest TEC Power Drivers for Optical ELECTRICAL CHARACTERISTICS (continued 5V, 1MHz mode (Note 4). PGND1 = PGND2 = GND, CTLI = MAXV = MAXIP = MAXIN = REF, SHDN DD PVDD1 PVDD2 ...
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Smallest TEC Power Drivers for Optical Modules (V = 5V, circuit of Figure +25°C unless otherwise noted DIFFERENTIAL OUTPUT VOLTAGE RIPPLE MAX8520/21 toc04 1µ OS2 OS1 ...
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Smallest TEC Power Drivers for Optical (V = 5V, circuit of Figure +25°C unless otherwise noted SWITCHING FREQUENCY CHANGE vs. V 1200 FREQ = 1MHz 1000 800 600 FREQ = 500kHz 400 200 0 3.0 ...
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Smallest TEC Power Drivers for Optical Modules (V = 5V, circuit of Figure +25°C unless otherwise noted THERMAL STABILITY, COOLING MODE MAX8520/21 toc20 TEMPERATURE 0.001°C/div T = +25°C TEC T = +45°C A 4s/div PIN ...
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Smallest TEC Power Drivers for Optical PIN NAME TQFN UCSP/WLP 10 A5 CTLI 11 A6 GND FREQ 14 D6, D5, D4 PGND2 15 E5, E6 LX2 16 F5, F6 PVDD2 ...
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Smallest TEC Power Drivers for Optical Modules Detailed Description The MAX8520/MAX8521 TEC drivers consist of two switching buck regulators that operate together to directly control the TEC current. This configuration cre- ates a differential voltage across the TEC, allowing bi- ...
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Smallest TEC Power Drivers for Optical 1µF PVDD1 C3 1µF PGND1 PVDD2 C4 1µF PGND2 REF C6 0.1µF MAXIP MAXIN 49.9kΩ MAXV CTLI 100kΩ 243kΩ MAX4475 INPUTS Figure 1. MAX8521 Typical Application Circuit ______________________________________________________________________________________ L1 ...
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Smallest TEC Power Drivers for Optical Modules 1µF PVDD1 C3 1µF PGND1 PVDD2 C4 1µF PGND2 REF C6 0.1µF MAXIP MAXIN 49.9kΩ MAXV 100kΩ Figure 2. Typical Application Circuit for the MAX8520 with Reduced Op-Amp Count ...
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Smallest TEC Power Drivers for Optical CTLI 0.5X Figure 3. Functional Diagram of the Current-Control Loop Inductor Selection The MAX8520/MAX8521 dual buck converters operate in-phase and in complementary mode to drive the TEC differentially in a current-mode ...
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Smallest TEC Power Drivers for Optical Modules The output common-mode ripple voltage can be calcu- lated as follows LIR x I (ESR + 1 fs) RIPPLEpk-pk TEC(MAX) A 1µF ceramic capacitor with ESR of 10 ...
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Smallest TEC Power Drivers for Optical Take care not to exceed the positive or negative cur- rent limit on the TEC. Refer to the manufacturer’s data sheet for these limits. Setting Max TEC Voltage Apply a voltage to the MAXV ...
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Smallest TEC Power Drivers for Optical Modules 6) To ensure high DC-loop gain and minimum loop error, keep the board layout adjacent to the negative input pin of the integrator (U2 in Figure1) clean and free of moisture. Any contamination ...
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Smallest TEC Power Drivers for Optical ON OFF SHDN REF REF MAX V = TEC MAXV × MAXV MAX I = TEC MAXIP ) × MAXIP REF (0.15V/R ) SENSE MAX I = ...
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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. 18 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 2011 Maxim Integrated Products ...