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5/28 XCM517 Series ■ELECTRICAL CHARACTERISTICS ●XCM517Ax, 1ch Block /2ch Block VOUT=1.8V, fOSC=1.2MHz, Ta=25℃ Test conditions: Unless otherwise stated, VIN = 5.0V, VOUT (E) = 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)= (VIN - 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: When VOUT(E)+1.2V<2.7V, VIN=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"＝VIN∼VIN - 1.2V, "L"＝+ 0.1V ∼ - 0.1V *11: XCM517xA / XCM517xB series exclude IPFM and MAXIPFM because those are only for the PFM control’s functions. *12: The electrical characteristics shows 1 channel values when the other channel is stopped. PARAMETER SYMBOL CONDITIONS MIN. TYP. MAX. UNITS CIRCUIT Output Voltage VOUT When connected to external components, VIN=VEN=5.0V, IOUT1=30mA 1.764 1.800 1.836 V ① Operating Voltage Range VIN 2.7 - 6.0 V ① Maximum Output Current IOUTMAX When connected to external components, VIN=VOUT(E)+2.0V, VEN=1.0V (*8) 600 - - mA ① UVLO Voltage VUVLO VEN=VIN,VOUT=0V, Voltage which Lx pin holding “L” level (*1, *10) 1.00 1.40 1.78 V ③ (XCM517AA) - 22 50 Supply Current IDD VIN=VEN=5.0V, VOUT=VOUT(E)×1.1V (XCM517AC) - 15 33 μA ② Stand-by Current ISTB VIN=5.0V, VEN=0V, VOUT=VOUT(E)×1.1V - 0 1.0 μA ② Oscillation Frequency fOSC When connected to external components, VIN=VOUT(E)+2.0V,VEN=1.0V, IOUT=100mA 1020 1200 1380 kHz ① PFM Switching Current IPFM When connected to external components, VIN=VOUT(E)+2.0V, VEN=VIN , IOUT=1mA (*11) 120 160 200 mA ① Maximum IPFM Limit MAX IPFM VEN=VIN=(C-1) IOUT=1mA (*11) 200 % ① Maximum Duty Ratio MAXDTY VIN=VEN5.0V, VOUT=VOUT (E)×0.9V 100 - - % ② Minimum Duty Ratio MINDTY VIN=VEN5.0V, VOUT=VOUT (E)×1.1V - - 0 % ② Efficiency (*2) EFFI When connected to external components, VEN=VIN＝VOUT (E)+1.2V (*7), IOUT =100mA - 92 - % ① Lx SW "H" ON Resistance 1 RL ｘH VIN=VEN=5.0V, VOUT=0V,ILX =100mA (*3) - 0.35 0.55 Ω ④ Lx SW "H" ON Resistance 2 RL ｘH VIN=VEN=3.6V, VOUT=0V,ILX =100mA (*3) - 0.42 0.67 Ω ④ Lx SW "L" ON Resistance 1 RL ｘL VIN=VEN=5.0V (*4) - 0.45 0.66 Ω - Lx SW "L" ON Resistance 2 RL ｘL VIN=VEN=3.6V, (*4) - 0.52 0.77 Ω - Lx SW "H" Leak Current (*5) ILeakH VIN=VOUT =5.0V, VEN=0V, LX=0V - 0.01 1.0 μA ⑤ Lx SW "L" Leak Current (*5) ILeakL VIN=VOUT =5.0V, VEN=0V, LX=5.0V - 0.01 1.0 μA ⑤ Current Limit (*9) ILIM VIN=VEN=5.0V, VOUT=VOUT (E)×0.9V (*7) 900 1050 1350 mA ⑥ Output Voltage Temperature Characteristics △VOUT VOUT・△topr IOUT=30mA -40℃≦Topr≦85℃ - ±100 - ppm/ ℃ ① EN "H" Level Voltage VENH VOUT =0V, Applied voltage to VEN, Voltage changes Lx to “H” level (*10) 0.65 - 6.0 V ③ EN "L" Level Voltage VENL VOUT =0V, Applied voltage to VEN, Voltage changes Lx to “L” level (*10) VSS - 0.25 V ③ EN "H" Current IENH VIN=VEN=5.0V, VOUT=0V - 0.1 0. μA ⑤ EN "L" Current IENL VIN=5.0V, VEN=0V, VOUT=0V - 0.1 - 0.1 μA ⑤ Soft Start Time tSS When connected to external components, VEN=0V → VIN , IOUT=1mA 0.5 1.0 2.5 ms ① Latch Time tLAT VIN= VEN=5.0V, VOUT=0.8× VOUT(E), Short Lx at 1Ω resistance (*6) 1.0 - 20.0 ms ⑦ Short Protection Threshold Voltage VSHORT Sweeping VOUT , VIN=VEN= 5.0V, Short Lx at 1Ω resistance, VOUT voltage which Lx becomes “L” level within 1ms 0.675 0.900 1.125 V ⑦ |
