XC6371_2 Datasheet, PDF (5/19 Pages) Torex Semiconductor – PWM Controlled Step-Up DC/DC Controllers/Converters

XC6371/XC6372/XC6373
Series
■ELECTRICAL CHARACTERISTICS
XC6371/72A501PR
VOUT=5.0V, FOSC=100kHZ
PARAMETER
SYMBOL
CONDITIONS
Output Voltage
VOUT
Maximum Input Voltage
VIN
Operation Start Voltage VST1
External Components Connected, IOUT=1mA
Oscillation Start Voltage
VST2
No external components. Apply voltage to VOUT
Lx : 10kΩ pull-up to 5V
No Load Input Current
IIN
VIN=VOUT×0.8, IOUT=0mA (*1)
Supply Current 1
IDD1
Same as VST2,
Apply output voltage×0.95 to VOUT
Supply Current 2
IDD2
Same as VST2,
Apply output voltage×1.1 to VOUT
Lx Switch-On
Resistance
RSWON
Same as IDD1, VLX=0.4V
Lx Leak Current
ILXL
No external components. VOUT=VLX=10V
Oscillation Frequency FOSC
Same as IDD1. Measuring of Lx waveform
Maximum Duty Ratio MAXDTY
Same as IDD1. Measuring of Lx waveform
PFM Duty Ratio (*4) PFMDTY
Same as IDD1. Measuring of Lx waveform
Lx Limit Voltage
VLXLMT
Same as IDD1. Apply output voltage to Lx,
Voltage required to produce FOSC×2
Efficiency
EFFI
Slow-Start Time
TSS
MIN.
4.875
10
-
-
-
-
-
-
-
85
80
10
0.7
-
4.0
NOTE: Unless otherwise stated, VIN=VOUT×0.6, IOUT=50mA. See Typical Application Circuits, Circuit1
TYP.
5.000
-
-
-
12.8
80.2
8.2
1.4
-
100
87
17
-
85
10.0
Ta=25℃
MAX. UNITS
5.125
V
-
V
0.90
V
0.80
V
25.7 μA
133.8 μA
16.5 μA
2.4
Ω
1.0
μA
115 kHz
92
%
25
%
1.3
V
-
%
20.0 mS
*1: The Schottky diode (SD) must be type MA735, with reverse current (IR)<1.0μA at reverse voltage (VR)=10.0V.(XC6372A)
*2: "Supply Current 1" is the supply current while the oscillator is continuously oscillating. In actual operation the oscillator periodically
operates which results in less average power consumption. The current actually provided by an external VIN source is represented by
"No Load Input Current (IIN)".
*3: When PWM operates at PWM Mode.
*4: When PFM operates at PFM Mode.(XC6372A)
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