XC6371/6372/6373
Series
■ELECTRICAL
CHARACTERISTICS (Continued)
XC6371/72C501PR
PARAMETER
Output Voltage
Maximum Input Voltage
Operation Start Voltage
Operation Start Voltage
No Load Input Current
Supply Current 1
Supply Current 2
Lx Switch-On
Resistance
Lx Leak Current
Oscillation Frequency
Maximum Duty Ratio
PFM Duty Ratio (*4)
Stand-by Current
CE "High" Voltage
CE "Low" Voltage
CE "High" Current
CE "Low" Current
Lx Limit Voltage
Efficiency
Slow-Start Time
V
OUT
=5.0V, FOSC=100kHz
SYMBOL
V
OUT
V
IN
V
ST1
V
ST2
I
IN
I
DD1
I
DD2
R
SWON
I
LXL
FOSC
MAXDTY
PFMDTY
I
STB
V
CEH
V
CEL
I
CEH
I
CEL
V
LxLMT
EFFI
T
SS
CONDITIONS
MIN.
4.875
10
-
-
-
-
-
-
-
85
80
10
-
0.75
-
-
-
0.7
-
4.0
TYP.
5.000
-
-
-
12.8
80.2
8.2
1.4
-
100
87
17
-
-
-
-
-
-
85
10.0
MAX.
5.125
-
0.90
0.80
25.7
133.8
16.5
2.4
1.0
115
92
25
0.5
-
0.20
0.25
-0.25
1.3
-
20.0
Ta=25℃
UNITS
V
V
V
V
μA
μA
μA
Ω
μA
kHZ
%
%
μA
V
V
μA
μA
V
%
ms
External Components Connected, I
OUT
=1mA
No external components. Apply voltage to V
OUT
,
Lx : 10kΩ pull-up to 5V
V
IN
=V
OUT
×0.8,
I
OUT
=0mA (*1)
Same as V
ST2
,
Apply output voltage×0.95 to V
OUT
Same as V
ST2
,
Apply output voltage×1.1 to V
OUT
Same as I
DD1
, V
Lx
=0.4V
No external components, V
OUT
=V
LX
=10V
Same as I
DD1
, Measuring of Lx waveform
Same as I
DD1
, Measuring of Lx waveform
Same as I
DD1
, Measuring of Lx waveform
Same as I
DD1
Same as I
DD1
, Lx Oscillation start
Same as I
DD1
, Lx Oscillation stop
Same as I
DD1
, V
CE
=V
OUT
×0.95
Same as I
DD1
, V
CE
=0V
Same as I
DD1
, Apply output voltage to Lx,
Voltage required to produce FOSC×2
NOTE: Unless otherwise stated, connect CE to V
OUT
, V
IN
=V
OUT
×0.6,
I
OUT
=50mA. See Typical Application Circuits, Circuit 2.
*1: The Schottky diode (SD) must be type MA735, with reverse current (I
R
)<1.0μA at reverse voltage (V
R
)=10.0V.(XC6372C)
*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 (I
IN
)".
*3: When PWM operates at PWM Mode.
*4: When PFM operates at PFM Mode.(XC6372C)
590
TOREX [ TOREX SEMICONDUCTOR ]
