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XCM524BB01DR-G Datasheet(PDF) 9 Page - Torex Semiconductor |
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XCM524BB01DR-G Datasheet(HTML) 9 Page - Torex Semiconductor |
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9 / 52 page  9/52 XCM524 Series ■ELECTRICAL CHARACTERISTICS (Continued) ● XCM524xC 2ch (DC/DC BLOCK) VDCOUT=1.8V, fOSC=1.2MHz, Ta=25℃ Test conditions: Unless otherwise stated, VIN2=5.0V VDCOUT(T)= Setting voltage NOTE: *1: Including hysteresis width of operating voltage. *2: EFFI = { ( output voltage×output current ) / ( input voltage×input current) }×100 *3: ON resistance (Ω)= (VIN2 - Lx pin measurement voltage) / 100mA *4: Design value *5: When temperature is high, a current of approximately 10μA (maximum) may leak. *6: Time until it short-circuits DCOUT with GND via 1Ωof resistor from an operational state and is set to Lx=0V from current limit pulse generating. *7: VDCOUT(T)+1.2V<2.7V, VIN2=2.7V. *8: When the difference between the input and the output is small, some cycles may be skipped completely before current maximizes. If current is further pulled from this state, output voltage will decrease because of P-ch driver ON resistance. *9: Current limit denotes the level of detection at peak of coil current. *10: "H"＝VIN2∼VIN2 - 1.2V, "L"＝+ 0.1V ∼ - 0.1V *11: XCM524A series exclude IPFM and DTYLIMIT_PFM because those are only for the PFM control’s functions. * The electrical characteristics above are when the other channel is in stop. PARAMETER SYMBOL CONDITIONS MIN. TYP. MAX. UNITS CIRCUIT Output Voltage VDCOUT When connected to external components, VIN2=VEN2=5.0V,IOUT1=30mA 1.764 1.800 1.836 V ⑦ Operating Voltage Range VIN2 2.7 - 6.0 V ⑦ Maximum Output Current IOUT2MAX When connected to external components, VIN2=VDCOUT(T)+2.0V,VEN2=1.0V (*8) 600 - - mA ⑦ UVLO Voltage VUVLO VEN2=VIN2 ，VDCOUT=0V, Voltage which Lx pin holding “L” level (*1, *10) 1.00 1.40 1.78 V ⑨ (XCM524AC) - 22 50 Supply Current IDD VIN2=VEN2=5.0V,VDCOUT=VDCOUT(T)×1.1V (XCM524BC) - 15 33 μA ⑧ Stand-by Current ISTB VIN2=5.0V,VEN2=0V,VDCOUT=VDCOUT(T)×1.1V - 0 1.0 μA ⑧ Oscillation Frequency fOSC When connected to external components, VIN2=VDCOUT(T)+2.0V,VEN2=1.0V, IOUT2=100mA 1020 1200 1380 kHz ⑦ PFM Switching Current IPFM When connected to external components, VIN2=VDCOUT(T)+2.0V,VEN2=VIN2, IOUT2=1mA (*11) 120 160 200 mA ⑦ PFM Duty Limit DTYLIMIT_PFM VEN2=VIN2=(C-1)IOUT2=1mA (*11) - 200 % ⑦ Maximum Duty Cycle DMAX VIN2=VEN2=5.0V, VDCOUT=VDCOUT(T)×0.9V 100 - - % ⑨ Minimum Duty Cycle DMIN VIN2=VEN2=5.0V, VDCOUT=VDCOUT(T)×1.1V - - 0 % ⑨ Efficiency EFFI When connected to external components, VEN2=VIN2＝VDCOUT(T)+1.2V (*7), IOUT2=100mA - 92 - % ⑦ Lx SW "H" ON Resistance 1 RLXH1 VIN2=VEN2=5.0V,VDCOUT=0V,ILX=100mA (*3) - 0.35 0.55 Ω ⑩ Lx SW "H" ON Resistance 2 RLXH2 VIN2=VEN2=3.6V,VDCOUT=0V,ILX=100mA (*3) - 0.42 0.67 Ω ⑩ Lx SW "L" ON Resistance 1 RLXL1 VIN2=VEN2=5.0V (*4) - 0.45 0.66 Ω − Lx SW "L" ON Resistance 2 RLXL2 VIN2=VEN2=3.6V (*4) - 0.52 0.77 Ω − Lx SW "H" Leak Current (*5) ILEAKH VIN1=VDCOUT=5.0V,VEN1=0V,LX=0V - 0.01 1.0 μA ⑮ Current Limit (*9) ILIM VIN2=VEN2=5.0V,VDCOUT=VDCOUT(T)×0.9V 900 1050 1350 mA ⑫ Output Voltage Temperature Characteristics △ VDCOUT/ (VDCOUT・△topr) IOUT2=30mA -40℃≦Topr≦85℃ - ±100 - ppm/℃ ⑦ EN "H" Voltage VENH VDCOUT=0V, Applied voltage to VEN2, Voltage changes Lx to “H” level (*10) 0.65 - 6.0 V ⑨ EN "L" Voltage VENL VDCOUT=0V, Applied voltage to VEN2, Voltage changes Lx to “L” level (*10) VSS - 0.25 V ⑨ EN "H" Current IENH VIN2=VEN2=5.0V,VDCOUT=0V - 0.1 - 0.1 μA ⑪ EN "L" Current IENL VIN2=5.0V,VEN2=0V,VDCOUT=0V - 0.1 - 0.1 μA ⑪ Soft Start Time tSS When connected to external components, VEN2=0V→VIN2, IOUT2=1mA - 0.25 0.40 ms ⑦ Latch Time tLAT VIN2=VEN2=5.0V,VDCOUT=0.8×VDCOUT(T) Short Lx at 1Ω resistance (*6) 1.0 - 20 ms ⑬ Short Protection Threshold Voltage VSHORT Sweeping VDCOUT, VIN2=VEN2=5.0V, Short Lx at 1Ω resistance, DCOUT voltage which Lx becomes “ Lx=L ” within 1ms 0.675 0.900 1.150 V ⑬ CL Discharge RDCHG VIN2=5.0V,LX=5.0V,VEN2=0V,VDCOUT=open 200 300 450 Ω ⑭ |
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