e
- 56
I
Electrical Characteristics
XC6372C501PR
Ta=25
:
V
OUT
=5.0V,F
OSC
=100kH
Z
Measuring conditions: Unless otherwise specified, connect CE to V
OUT
, V
IN
=V
OUT
0.6, I
OUT
=50mA. See Typical Application Circuits, Fig.3.
1. The Schottky diode (SD) must be type MA735, with reverse current (IR) < 1.0
μ
A at reverse voltage (VR) =10.0V
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 comsumption. The current actually provided by an external V
IN
source is represented by "No-Load Input
Current (I
IN
)".
3. When PWM operates.
4. When PFM operates.
PARAMETER
Output Voltage
Maximum Input Voltage
Operation Start-up Voltage
Oscillation Start-up Voltage
No Load Input Current
Supply Current 1
(Note2)
Supply Current 2
LX Switch-On Resistance
LX Leakage Current
Oscillator Frequency(Note 3)
Maximum Duty Ratio
PFM Duty Ratio(Note 4)
Stand-by Current
CE"High" Voltage
CE"Low" Voltage
CE"High" Current
CE"Low" Current
I
STB
V
CEH
V
CEL
I
CEH
I
CEL
Same as I
DD
1.
Same as I
DD
1.
Same as I
DD
1.
Same as I
DD
1.V
CE
=V
OUT
0.95
Same as I
DD
1.V
CE
=0V.
0.75
0.5
0.20
0.25
–0.25
μ
A
V
V
μ
A
μ
A
Efficiency
Slow-Start Time
L
X
Limit Voltage
V
OUT
V
IN
V
ST1
V
ST2
I
IN
I
DD
1
I
DD
2
RSWON
I
LXL
FOSC
MAXDTY
PFMDTY
External Components Connected.
I
OUT
=1mA.
No external components.
Apply voltage to VOUT.
V
IN
=V
OUT
0.8, I
OUT
=0mA(Note1)
Lx: 10k
pull-up to 5V.
Same as V
ST
2
.
Apply output voltage
0.95 to V
OUT
.
Same as V
ST
2
.
Apply output voltage
1.1 to V
OUT
.
Same as I
DD
1. VL
X
=0.4V.
No external components. V
OUT
=VL
X
=10V.
Same as I
DD
1.
Measuring of Lx waveform.
Same as I
DD
1.
Measuring of Lx waveform.
Same as I
DD
1.
Measuring of Lx waveform.
4.875
10
85
80
5.000
12.8
80.2
8.2
1.4
100
87
10
17
5.125
0.90
0.80
25.7
133.8
16.5
2.4
1.0
115
92
25
V
V
V
V
μ
A
μ
A
μ
A
μ
A
kHz
%
%
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
EFFI
TSS
VL
X
LMT
Same as I
DD
1. Apply output voltage to Lx.
Voltage required to produce FOSC
2.
4.0
0.7
85
10.0
20.0
1.3
%
ms
V
Note
:
219