XC6371/6372/6373
Series
■ELECTRICAL
CHARACTERISTICS
V
OUT
=5.0V, FOSC=100kHZ
XC6371/72A501PR
PARAMETER
SYMBOL
CONDITIONS
Output Voltage
V
OUT
Maximum Input Voltage
V
IN
Operation Start Voltage
V
ST1
External Components Connected, I
OUT
=1mA
No external components. Apply voltage to V
OUT
Oscillation Start Voltage
V
ST2
Lx : 10kΩ pull-up to 5V
No Load Input Current
I
IN
V
IN
=V
OUT
×0.8,
I
OUT
=0mA (*1)
Same as V
ST2
,
Supply Current 1
I
DD1
Apply output voltage×0.95 to V
OUT
Same as V
ST2
,
Supply Current 2
I
DD2
Apply output voltage×1.1 to V
OUT
Lx Switch-On
R
SWON
Same as I
DD1
, V
LX
=0.4V
Resistance
Lx Leak Current
I
LXL
No external components. V
OUT
=V
LX
=10V
Oscillation Frequency
FOSC
Same as I
DD1
. Measuring of Lx waveform
Maximum Duty Ratio
MAXDTY
Same as I
DD1
. Measuring of Lx waveform
PFM Duty Ratio (*4)
PFMDTY
Same as I
DD1
. Measuring of Lx waveform
Same as I
DD1
. Apply output voltage to Lx,
Lx Limit Voltage
V
LXLMT
Voltage required to produce FOSC×2
Efficiency
EFFI
Slow-Start Time
T
SS
MIN.
4.875
10
-
-
-
-
-
-
-
85
80
10
0.7
-
4.0
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
25.7
133.8
16.5
2.4
1.0
115
92
25
1.3
-
20.0
V
μA
μA
μA
Ω
μA
kHz
%
%
V
%
mS
NOTE: Unless otherwise stated, V
IN
=V
OUT
×0.6,
I
OUT
=50mA. See Typical Application Circuits, Circuit1
*1: The Schottky diode (SD) must be type MA735, with reverse current (I
R
)<1.0μA at reverse voltage (V
R
)=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 V
IN
source is represented by
"No Load Input Current (I
IN
)".
*3: When PWM operates at PWM Mode.
*4: When PFM operates at PFM Mode.(XC6372A)
589
TOREX [ TOREX SEMICONDUCTOR ]
