XC9220/XC9221
Series
■ELECTRICAL
CHARACTERISTICS (Continued)
XC9220/XC9221 B and D series
PARAMETER
FB Voltage
Input Voltage Range
U.V.L.O. Voltage
(Minimum Operating Voltage)
Supply Current 2
Stand-by Current
Oscillation Frequency
Maximum Duty Ratio
PFM Duty Ratio
EXT/ High On Resistance
EXT/ Low On Resistance
Integral Protection Time
(*4)
Short-Circuit Protection
Soft-Start Time
Internal Soft-Start Time (*1)
Efficiency (*2)
FB Voltage
Temperature Characteristics
CE “High” Level Voltage
(*3)
CE “Low” Level Voltage
CE “High” Level Current
CE “Low” Level Current
FB “High” Level Current
FB “Low” Level Current
SYMBOL
V
FB
V
IN
V
UVLO
I
DD2
I
STB
F
OSC
MAXDTY
PFMDTY
REXTBH
REXTBL
T
PRO
V
SHORT
T
SS
T
SS_IN
EFFI
V
FB
Topr V
FB
V
CEH
V
CEL
I
CEH
I
CEL
I
FBH
I
FBL
V
IN
=5.0V, FB=1.0V
-
Connected to external
components
No load (XC9221 series only)
100
15
6
6
CONDITIONS
MIN.
0.8865
2.8
1.9
TYP.
MAX.
Ta = 25
O
C
UNIT.
V
V
V
μA
μA
kHz
-
35
16
20
%
%
Ω
Ω
ms
0.7
20.0
-
-
-
0.3
0.1
0.1
0.1
0.1
V
ms
ms
%
ppm
/
O
C
V
V
μA
μA
μA
μA
CIRCUIT
2
-
3
1
1
3
2
3
4
4
2
2
5
2
3
2
2
2
1
1
4
4
0.9000 0.9135
-
16.0
2.3
**
0.1
**
-
25
10
12
**
2.7
1.0
(XC9220/9221 B series)
-
5.0
-
-
2.6
-
- 0.1
- 0.1
- 0.1
- 0.1
Connected to R
SS
and C
SS
CE=V
IN
-
10.0
**
92
+100
-
-
-
-
-
-
V
IN
=CE=16V
V
IN
=16V, CE=0V
V
IN
=FB=16V
V
IN
=16V, FB=0V
Unless otherwise stated, V
IN
=5.0V
External components: C
SS
=0.1μF, R
SS
=200kΩ
NOTE:
*1: Internal soft-start time: In case where the U.V.L.O. function operates temporarily due to the power cutoff etc. when an external C
SS
is
charged (V
CE
>2.6V), the IC restarts operation by the internal soft-start time. Minimum value of soft-start time set externally is equal to the
internal soft-start time.
*2: EFFI={ (output voltage) x (output current) } / { (input voltage) x (input current) } x 100
*3: The integral latch and short-circuit protection do not function when the CE/C
SS
pin voltage become lower than 2.6V while the soft-start time.
*4: No Integral protection function is available with the XC9220/XC9221 D series.
** Refer to the CHARACTERISTICS CHART BY OSCILLATION FREQUENCY.
■CHARACTERISTICS
CHART BY OSCILLATION FREQUECY
PARAMETER
Supply Voltage 2
Oscillation Frequency
Integral Protection Time
Soft-Start Time
SYMBOL
I
DD2
FOSC
TPRO
T
SS
MIN.
-
255
0.5
2
300kHz
TYP.
25
300
1.0
4
MAX.
50
345
2.0
8
MIN.
-
425
0.5
2
500kHz
TYP.
25
500
1.0
4
MAX.
50
575
2.0
8
MIN.
-
850
0.25
1
1.0MHz
TYP.
40
1000
0.50
2
MAX.
80
1150
1.00
4
5/22
TOREX [ TOREX SEMICONDUCTOR ]
