Product specifications

5/22
XC9220/XC9221
Series
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.
300kHz 500kHz 1.0MHz
PARAMETER SYMBOL
MIN. TYP. MAX. MIN. TYP. MAX. MIN. TYP. MAX.
Supply Current 2 IDD2 - 25 50 - 25 50 - 40 80
Oscillation Frequency fosc 255 300 345 425 500 575 850 1000 1150
Integral Protection Time t
PRO
0.5 1.0 2.0 0.5 1.0 2.0 0.25 0.50 1.00
Soft-Start Time tSS 2 4 8 2 4 8 1 2 4
PARAMETER SYMBOL CONDITIONS MIN. TYP. MAX. UNIT. CIRCUIT
FB Voltage VFB 0.8865 0.9000 0.9135 V 2
Input Voltage Range VIN 2.8 - 16.0 V -
UVLO Voltage
(Minimum Operating Voltage)
VUVLO 1.9 2.3 2.7 V 3
Supply Current 2 IDD2 VIN=5.0V, FB=1.0V ** μA 1
Stand-by Current ISTB - 0.1 1.0 μA 1
Oscillation Frequency fOSC
Connected to external
components
** kHz 3
Maximum Duty Ratio MAXDTY 100 - - % 2
PFM Duty Ratio PFMDTY No load (XC9221 series only) 15 25 35 % 3
EXT/ High On Resistance REXTBH 6 10 16 Ω 4
EXT/ Low On Resistance REXTBL 6 12 20 Ω 4
Integral Protection Time
(*4)
tPRO (XC9220/9221 B series) ** ms 2
Short-Circuit Protection VSHORT - - 0.7 V 2
Soft-Start Time tSS Connected to RSS and CSS 5.0 10.0 20.0 ms 5
Internal Soft-Start Time (*1) tSS_IN CE=VIN ** ms 2
Efficiency (*2) EFFI - 92 - % 3
UVFB FB Voltage
Temperature Characteristics
UToprVFB
- +100 -
ppm
/
O
C
2
CE “High” Level Voltage
(*3)
VCEH 2.6 - - V 2
CE “Low” Level Voltage VCEL - - 0.3 V 2
CE “High” Level Current ICEH VIN=CE=16V - 0.1 - 0.1 μA 1
CE “Low” Level Current ICEL VIN=16V, CE=0V - 0.1 - 0.1 μA 1
FB “High” Level Current IFBH VIN=FB=16V - 0.1 - 0.1 μA 4
FB “Low” Level Current IFBL VIN=16V, FB=0V - 0.1 - 0.1 μA 4
XC9220/XC9221 B and D series
■ELECTRICAL CHARACTERISTICS (Continued)
Ta = 25
O
C
■CHARACTERISTICS CHART BY OSCILLATION FREQUECY