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■ELECTRICAL CHARACTERISTICS
XC9267series
Ta=25℃
PARAMETER SYMBOL CONDITIONS MIN. TYP. MAX. UNIT CIRCUIT
FB Voltage VFBE VFB=0.739V→0.761V,
VFB Voltage when Lx pin voltage
changes from"H" level to "L" level 0.739 0.750
0.761
V ②
Setting Output
Voltage Range (*1) VOUTSET - 1 - 25 V -
Operating Input
Voltage Range (*1) VIN - 3 - 36 V -
UVLO Detect Voltage VUVLOD VEN/SS=12V,VIN:2.8V→2.6V,VFB=0V
VIN Voltage which Lx pin voltage
holding "H" level 2.6 2.7 2.8 V ②
UVLO Release Voltage VUVLOR VEN/SS=12V,VIN:2.7V→2.9V,VFB=0V
VIN Voltage which Lx pin voltage
holding "L" level 2.7 2.8 2.9 V ②
Quiescent Current Iq VFB=0.825V XC9267B75C - 180 350 μA ④
XC9267B75D - 290 500
Stand-by Current ISTBY VIN=12V, VEN/SS=VFB=0V - 1.65 2.50 μA ④
Oscillation Frequency fOSC
Connected to
external
components,
IOUT=200mA
XC9267B75C 1.098 1.200 1.302 MHz ①
XC9267B75D 2.013 2.200 2.387
Minimum On Time tONMIN Connec ted to ex ternal co mpon ents - 85 (*2) - ns ①
Minimum Duty Cycle DMIN VFB=0.825V - - 0 % ②
Maximum Duty Cycle DMAX VFB=0.675V 100 - - % ②
Lx SW "H" On Resistanc e RLxH VFB=0.675V, ILx=200mA - 1.20 1.38 Ω ⑤
Lx SW "L" On Resis tance RLxL -
(*2) - Ω ⑤
Highside Curr ent Li mit (*3) ILIMH VFB=VFBE×0.98 1.00 1.30 - A ⑤
Internal Soft-Start Time tSS1 VFB=0.675V 1.6 2.0 2.4 ms ②
External Soft-Start Time tSS2 VFB=0.675V
RSS=430KΩ, CSS=0.47μF 21 26 33 ms ③
PG detect voltage (*4) VPGDET
VFB=0.712V→0.638V, RPG:100kΩ
pull-up to 5V
VFB Voltage when PG pin voltage
changes from"H" level to "L" level
0.638 0.675 0.712 V ⑤
PG Output voltage (*4) VPG VFB=0.6V, IPG=1mA - - 0.3 V ②
Efficiency (*5) EFFI Connected to ex ternal co mpon ents,
VIN=12V, VOUT=5V, IOUT=300mA - 88 - % ①
FB Voltage
Temperature
Characteristics
ΔVFB/
(ΔTopr・VFBE) -40℃≦Topr≦105℃ - ±100 - ppm/℃ ②
Test Condition: Unless otherwise stated, VIN=12V, VEN/SS=12V, VPG:OPEN (*4)
Peripheral parts c onnection conditions:
L=6.8μH,RFB1=680kΩ,RFB2=120kΩ,CFB=18pF,CL=10μF×2parallel, CIN=2.2μF
(*1) Please use within the range of VOUT/VIN≧tONMIN[ns]×fOSC[MHz]×10-3
(*2) Design reference value. This parameter is provided only for reference.
(*3) Current limit denotes the level of detection at peak of coil current.
(*4) For the USP-6C Package only.
(*5) EFFI = {(output voltage) x (output current)} / {(i nput volt age) x (input current)} x 100