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XCL205/XCL206/XCL207
Series
■ELECTRICAL CHARACTERISTICS (Continued)
●XCL205Gxx3AR/XCL206Gxx3AR/XCL207Gxx3AR, fOSC=3.0MHz, Ta=25℃
PARAMETER SYMBOL CONDITIONS MIN. TYP. MAX. UNITS
CIRCUIT
Output Voltage VOUT When connected to external components,
VIN = VCE =5.0V, IOUT =30mA <E-1> <E-2> <E-3> V ①
Operating Voltage Range VIN 1.8 - 6.0 V ①
Maximum Output Current IOUTMAX VIN=VOUT(T)+2.0V, VCE=1.0V
When connected to external components (*9) 600 - - mA ①
UVLO Voltage VUVLO VCE=VIN,VOUT(T)×0.5V(*14),
Voltage which Lx pin holding “L” level (*1, *11)
1.00 1.40 1.78 V ③
Supply Current (XCL205) - 46 65
Supply Current (XCL206, XCL207)
IDD V
IN =VCE=5.0V, VOUT= VOUT(T)×1.1V - 21 35
μA ②
Stand-by Current ISTB V
IN =5.0V, VCE=0V, VOUT= VOUT(T)×1.1V - 0 1.0 μA ②
Oscillation Frequency fOSC When connected to external components,
VIN =VOUT(T)+2.0V,VCE=1.0V, IOUT=100mA 2550 3000 3450 kHz ①
PFM Switching Current (*12) I
PFM When connected to external components,
VIN =VOUT(T)+2.0V, VCE = VIN , IOUT=1mA <E-4> <E-5> <E-6> mA ⑩
PFM Duty Limit (*12) DTYLIMIT_PFM V
CE= VIN = VOUT(T) +1.0V, IOUT=1mA - 200 300 % ①
Maximum Duty Cycle MAXDTY VIN = VCE =5.0V, VOUT = VOUT (T)×0.9V 100 - - % ③
Minimum Duty Cycle MINDTY VIN = VCE =5.0V, VOUT = VOUT (T)×1.1V - - 0 % ③
Efficiency(*2) EFFI
When connected to external components,
VCE = VIN ＝V
OUT (T)+1.2V, IOUT = 100mA - <E-7> - % ①
Lx SW "H" ON Resistance 1 RLｘHV
IN = VCE = 5.0V, VOUT = 0V,ILX = 100mA (*3) - 0.35 0.55 Ω④
Lx SW "H" ON Resistance 2 RLｘHV
IN = VCE = 3.6V, VOUT = 0V,ILX = 100mA (*3) - 0.42 0.67 Ω④
Lx SW "L" ON Resistance 1 RLｘLV
IN = VCE = 5.0V (*4) - 0.45 0.66 Ω-
Lx SW "L" ON Resistance 2 RLｘLV
IN = VCE = 3.6V (*4) - 0.52 0.77 Ω-
Lx SW "H" Leakage Current (*5) I
LEAKH V
IN= VOUT =5.0V, VCE =0V, LX=0V - 0.01 1.0 μA ⑨
Current Limit (*10) I
LIM V
IN = VCE= 5.0V, VOUT = VOUT (T)×0.9V (*8) 900 1050 1350 mA ⑥
Output Voltage
Temperature Characteristics
△
V
OUT
/
(V
OUT
・△
Topr)
IOUT =30mA
-40℃≦Topr≦85℃- ±100 - ppm/ ℃ ①
CE "H" Voltage VCEH VOUT=0V, Applied voltage to VCE,
Voltage changes Lx to “H” level (*11) 0.65 - 6.0 V ③
CE "L" Voltage VCEL VOUT=0V, Applied voltage to VCE,
Voltage changes Lx to “L” level (*11) VSS - 0.25 V ③
PWM "H" Level Voltage (*13) VPWMH
When connected to external components,
IOUT=1mA (*6), Voltage which oscillation
frequency becomes 2550kHz≦fOSC≦3450kHz (*13) - - VIN - 1.0 V ①
PWM "H" Level Voltage (*13) VPWML
When connected to external components,
IOUT=1mA (*6), Voltage which oscillation
frequency becomes fOSC＜2550kHz (*13)
VIN -
0.25 - - V ①
CE "H" Current ICEH V
IN = VCE =5.0V, VOUT = 0V - 0.1 - 0.1 μA ⑤
CE "L" Current ICEL V
IN =5.0V, VCE = 0V, VOUT = 0V - 0.1 - 0.1 μA ⑤
Soft Start Time tSS When connected to external components,
VCE=0V→VIN , IOUT=1mA - <E-11> <E-12> ms ①
Latch Time tLAT VIN=VCE=5.0V, VOUT=0.8×VOUT(T)
Short Lx at 1Ωresistance
(*7)
1.0 - 20 ms ⑦
Short Protection
Threshold Voltage VSHORT
Sweeping VOUT, VIN=VCE=5.0V, Short Lx at
1Ωresistance, VOUT voltage which Lx becomes “L”
level within 1ms
<E-8> <E-9> <E-10> V ⑦
CL Discharge RDCHG V
IN = 5.0V LX= 5.0V VCE = 0V VOUT = open 200 300 450 Ω⑧
Inductance Value L Test frequency=1MHz - 1.5 - μH-
Allowed Inductor Current IDC
Δ
T=40
℃
- 1000 - mA -
Test conditions: Unless otherwise stated, VIN=5.0V, VOUT (T) = Nominal Voltage
NOTE:
*1: Including hysteresis operating voltage range.
*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:The CE/MODE pin of the XCL207 series works also as an external switching pin of PWM control and PWM/PFM control. When the IC is in the
operation, control is switched to the automatic PWM/PFM switching mode when the CE/MODE pin voltage is equal to or greater than VIN minus
0.3V, and to the PWM mode when the CE/MODE pin voltage is equal to or lower than VIN minus 1.0V and equal to or greater than VCEH.
*7:Time until it short-circuits VOUT with GND via 1Ωof resistor from an operational state and is set to Lx=0V from current limit pulse generating.
*8: When VIN is less than 2.4V, limit current may not be reached because voltage falls caused by ON resistance.
*9: 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.
*10: Current limit denotes the level of detection at peak of coil current.
*11: “H”=VIN~VIN-1.2V, “L”=+0.1V~-0.1V
*12: IPFM and DTYLIMIT_PFM are defined only for the XCL206 and XCL207 series which have PFM control function. (Not for the XCL 205 series)
*13: VPWMH and VPWML are defined only for the XCL207 series. (They are not used in the XCL205/and XCL206 series)
*14: VIN is applied when VOUT (T) x 0.5V becomes more than VIN.
