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AME5251 Datasheet(PDF) 7 Page - Analog Microelectronics |
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AME5251 Datasheet(HTML) 7 Page - Analog Microelectronics |
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7 / 19 page  AME 7 AME5251 Rev.A.05 Dual 1A, 1.5MHz Synchronous Step-Down Converter n Electrical Specifications V IN=3.6V, VOUT=2.5V, VFB=0.6V, L=2.2µH, CIN=4.7µF, COUT=10µF, TA=25 o C, I MAX=1A unless otherwise specified. Note 1. Spec. for per channel Parameter Symbol Min Typ Max Units Input voltage VIN 2.5 5.5 V Adjustable Output Range Vout VFB VIN-0.2 V Feedback Voltage VFB 0.588 0.6 0.612 V Feedback Pin Bias Current IFB -50 50 nΑ Quiescent Current (For Adjustable Output Voltage) IQ 20 40 µA Shutdown Current ISHDN 0.1 1 µA Switch Frequency fOSC 1.2 1.5 1.8 MHz High-side Switch On-Resistance RDS,ON, LHI 0.28 Ω Low-side Switch On-Resistance RDS,ON, LO 0.25 Ω Switch Current Limit ISW,CL 1.4 1.6 A EN High (Enabled the Device) VEN,HI 1.5 V EN Low (Shutdown the Device) VEN,LO 0.4 V Input Undervoltage Lockout VUVLO 1.8 V Input Undervoltage Lockout Hysteresis VUVLO,HYST 0.1 V Thermal Shutdown Temperature OTP 160 oC Maximum Duty Cycle DMAX 100 % SW Leakage Current -1 1 µA EN=0V, VIN=5.0V VSW=0V or 5.0V Test Condition ISW=200mA, VIN=3.6V For Adjustable OutputVoltage VFB=VIN IOUT=0mA, VFB=1V VIN=2.5 to 5.5V rising edge Shutdown, temperature increasing VEN=GND ISW=200mA, VIN=3.6V VIN=2.5 to 5.5V VIN=2.5 to 5.5V |
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