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MAX17232 Datasheet(PDF) 4 Page - Maxim Integrated Products |
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MAX17232 Datasheet(HTML) 4 Page - Maxim Integrated Products |
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4 / 24 page  (VIN = 14V, VBIAS = 5V, CBIAS = 6.8µF, TA = TJ = -40°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C under normal conditions, unless otherwise noted.) (Note 2) Electrical Characteristics (continued) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNIT Regulated Feedback Voltage VFB1,2 0.99 1.0 1.01 V Feedback Leakage Current IFB1,2 TA = +25°C 0.01 1 µA Feedback Line Regulation Error VIN = 3.5V to 36V, VFB = 1V 0.001 %/V Transconductance (from FB_ to COMP_) gm VFB = 1V, VBIAS = 5V 1200 2400 µS Dead Time MAX17233: DL_ low to DH_ high 35 ns MAX17233: DH_ low to DL_ high 60 MAX17232: DL_ low to DH_ high 60 MAX17232: DH_ low to DL_ high 100 Maximum Duty Cycle Buck 1, buck 2 95 98.5 % Minimum On-Time tON(MIN) Buck 1, buck 2 50 ns PWM Switching Frequency fSW MAX17233 1 2.2 MHz MAX17232 0.2 1 Buck 2 Switching Frequency MAX17233ATIT+, MAX17233BATIU+ only 1/2fSW MHz Switching Frequency Accuracy MAX17233: RFOSC = 13.7kΩ, VBIAS = 5V 1.98 2.2 2.42 MHz MAX17232: RFOSC = 80.6kΩ, VBIAS = 5V 360 400 440 kHz Spread-Spectrum Range Spread spectrum enabled ±6 % FSYNC INPUT FSYNC Frequency Range MAX17233: Minimum sync pulse of 100ns 1.2 2.4 MHz MAX17232: Minimum sync pulse of 400ns 240 1200 kHz FSYNC Switching Thresholds High threshold 1.5 V Low threshold 0.6 CS Current-Limit Voltage Threshold VLIMIT1,2 VCS – VOUT, VBIAS = 5V, VOUT ≥ 2.5V 64 80 96 mV Skip Mode Threshold 15 mV Soft-Start Ramp Time Buck 1 and buck 2, fixed soft-start time regardless of frequency 2 6 10 ms Phase Shift Between Buck1 and Buck 2 180 ° LX1, LX2 Leakage Current VIN = 6V, VLX_ = VIN, TA = +25°C 0.01 µA DH1, DH2 Pullup Resistance VBIAS = 5V, IDH_ = -100mA 10 20 Ω DH1, DH2 Pulldown Resistance VBIAS = 5V, IDH_ = +100mA 2 4 Ω DL1, DL2 Pullup Resistance VBIAS = 5V, IDL_ = -100mA 4 8 Ω DL1, DL2 Pulldown Resistance VBIAS = 5V, IDL_ = +100mA 1.5 3 Ω MAX17232/MAX17233 3.5V–36V, 2.2MHz, Synchronous Dual Buck Controller with 20µA Quiescent Current www.maximintegrated.com Maxim Integrated │ 4 |
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