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MAX8521 Datasheet(PDF) 5 Page - Maxim Integrated Products |
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MAX8521 Datasheet(HTML) 5 Page - Maxim Integrated Products |
5 / 19 page Smallest TEC Power Drivers for Optical Modules _______________________________________________________________________________________ 5 ELECTRICAL CHARACTERISTICS (continued) (VDD = PVDD1 = PVDD2 = SHDN = 5V, 1MHz mode (Note 2). PGND1 = PGND2 = GND, CTLI = MAXV = MAXIP = MAXIN = REF, TA = -40°C to +85°C, unless otherwise noted.) (Note 7) PARAMETER SYMBOL CONDITIONS MIN MAX UNITS VMAXV = VREF x 0.67, VOS1 to VOS2 = ±4V, VDD = 5V -2 +2 % MAXV Threshold Accuracy VMAXV = VREF x 0.33, VOS1 to VOS2 = ±2V, VDD = 3V -3 +3 % MAXV, MAXI_ Input Bias Current IMAXV- BIAS, IMAXI_-BIAS VMAXV = VMAXI_ = 0.1V or 1.5V -0.1 +0.1 µA CTLI Gain ACTLI VCTLI = 0.5V to 2.5V (Note 6) 9.5 10.5 V/V CTLI Input Resistance RCTLI 1M Ω terminated at REF 0.5 2.0 M Ω Error-Amp Transconductance gm 50 160 µS VITEC Accuracy VOS1 to VCS = ±100mV, VOS1 = VDD/2 -10 +10 % Note 3: Enter 1MHz mode by tying a 60k Ω resistor from FREQ to ground for the MAX8520, and tying FREQ to VDD for the MAX8521. Note 4: Includes PFET leakage. Note 5: Duty-cycle specification is guaranteed by design and not production tested. Note 6: CTLI Gain is defined as: Note 7: Specifications to -40°C are guaranteed by design and not production tested. A V VV CTLI CTLI OS CS = − () ∆ ∆ 1 Typical Operating Characteristics (VDD = 5V, circuit of Figure 1, TA = +25°C, unless otherwise noted) EFFICIENCY vs. TEC CURRENT (VDD = 5V, RTEC = 2 Ω) TEC CURENT (A) 1.4 1.2 0.8 1.0 0.4 0.6 0.2 10 20 30 40 50 60 70 80 90 0 0 1.6 FREQ = 500kHz FREQ = 1MHz EFFICIENCY vs. TEC CURRENT (VDD = 3.3V, RTEC = 1.3 Ω) TEC CURRENT (A) 1.4 1.2 0.8 1.0 0.4 0.6 0.2 10 20 30 40 50 60 70 80 90 0 0 1.6 FREQ = 500kHz FREQ = 1MHz COMMON-MODE OUTPUT VOLTAGE RIPPLE MAX8520/21 toc03 400ns/div VOS2 20mV/div AC-COUPLED VOS1 20mV/div AC-COUPLED ITEC = 1A C2 = C7 = 1 µF |
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Similar Description - MAX8521 |
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