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Transcript
MAX16821A/MAX16821B/ MAX16821C High-Power Synchronous HBLED Drivers with Rapid Current Pulsing Typical Operating Characteristics (continued) (VIN = 12V, VDD = VCC = 5V, TA = +25°C, unless otherwise noted.) MAX16821A toc07 HIGH-SIDE DRIVER (DH) RISE TIME HIGH-SIDE DRIVER (DH) FALL TIME VIN = 12V DH RISING CLOAD = 22nF VIN = 12V MAX16821A toc08 CLOAD = 22nF VIN = 12V 3A/div 100ns/div MAX16821A toc09 2V/div 2V/div 40ns/div 40ns/div LOW-SIDE DRIVER (DL) FALL TIME MAX16821A toc11 MAX16821A toc10 CLOAD = 22nF VIN = 12V 10,000 CLOAD = 22nF VIN = 12V 2V/div 2V/div VIN = 12V 1000 100 40ns/div 40ns/div FREQUENCY vs. RT fSW (kHz) LOW-SIDE DRIVER (DL) RISE TIME MAX16821A toc12 LOW-SIDE DRIVER (DL) SINK AND SOURCE CURRENT 30 70 110 150 190 230 270 310 350 390 430 470 510 550 RT (k) SYNC, CLKOUT, AND DH WAVEFORMS FREQUENCY vs. TEMPERATURE VIN = 12V 258 256 fSW (kHz) MAX16821A toc15 RT/SYNC 5V/div 0V 254 RT/SYNC 5V/div 0V MODE = SGND 252 250 248 246 244 242 240 SYNC, CLKOUT, AND DL WAVEFORMS MAX16821A toc14 MAX16821A toc13 260 0 5 10 15 20 25 30 35 1s/div MODE = VCC CLKOUT 5V/div 0V CLKOUT 5V/div 0V DH 5V/div 0V DL 5V/div 0V 1s/div TEMPERATURE (°C) www.BDTIC.com/maxim www.maximintegrated.com Maxim Integrated ââ 6
