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MAX17245ETESA+ Datasheet(PDF) 3 Page - Maxim Integrated Products |
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MAX17245ETESA+ Datasheet(HTML) 3 Page - Maxim Integrated Products |
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3 / 17 page  (VSUP = VSUPSW = 14V, VEN = 14V, L1 = 2.2µH, CIN = 4.7µF, COUT = 22µF, CBIAS = 1µF, CBST = 0.1µF, RFOSC = 12kΩ, TA = TJ = -40°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C.) (Note 3) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS OUTPUT VOLTAGE (OUT) PWM Mode Output Voltage VOUT_5V VFB = VBIAS, 6V < VSUPSW < 36V, fixed-frequency mode (Notes 4, 5) 4.9 5 5.1 V VOUT_3.3V 3.234 3.3 3.366 PFM Mode Output Voltage VOUT_PFM_5V No load, VFB = VBIAS, PFM mode (Note 6) 4.9 5 5.15 V VOUT_PFM_3.3V 3.234 3.3 3.4 Load Regulation VFB = VBIAS, 300mA < ILOAD < 3.5A 0.5 % Line Regulation VFB = VBIAS, 6V < VSUPSW < 36V (Note 5) 0.02 %/V BST Input Current IBST_ON High-side MOSFET on, VBST - VLX = 5V 1 1.5 2 mA IBST_OFF High-side MOSFET off, VBST - VLX = 5V, TA = +25°C 5 µA LX Current Limit ILX Peak inductor current 4.2 5.2 6.2 A LX Rise Time RFOSC = 12kΩ 4 ns PFM Mode Current Threshold IPFM_TH TA = +25°C 200 400 500 mA Spread Spectrum Spread spectrum enabled fOSC ±6% High-Side Switch On-Resistance RON_H ILX = 1A, VBIAS = 5V 100 220 mΩ High-Side Switch Leakage Current High-side MOSFET off, VSUP = 36V, VLX = 0V, TA = +25°C 1 3 µA Low-Side Switch On-Resistance RON_L ILX = 0.2A, VBIAS = 5V 1.5 3 Ω Low-Side Switch Leakage Current VLX = 36V, TA = +25°C 1 µA TRANSCONDUCTANCE AMPLIFIER (COMP) FB Input Current IFB 20 100 nA FB Regulation Voltage VFB FB connected to an external resistor divider, 6V < VSUPSW < 36V (Note 7) 0.99 1.0 1.015 V FB Line Regulation ∆VLINE 6V < VSUPSW < 36V 0.02 %/V Transconductance (from FB to COMP) gm VFB = 1V, VBIAS = 5V 700 µS Minimum On-Time tON_MIN (Note 5) 80 ns Maximum Duty Cycle DCMAX 98 % OSCILLATOR FREQUENCY Oscillator Frequency RFOSC = 73.2kΩ 340 400 460 kHz RFOSC = 12kΩ 2.0 2.2 2.4 MHz Electrical Characteristics (continued) www.maximintegrated.com Maxim Integrated │ 3 MAX17245 3.5V–36V, 3.5A, Synchronous Buck Converter With 28μA Quiescent Current and Reduced EMI |
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