XC9260/XC9261Series
■ELECTRICAL CHARACTERISTICS
XC9260/XC9261 Series
Ta=25℃
PARAMETER
SYMBOL
VOUT
CONDITIONS
MIN.
TYP.
MAX.
UNITS CIRCUIT
When connected to external components,
Output Voltage
<E-1> <E-2> <E-3>
V
①
I
OUT=30mA
Operating Voltage Range
Maximum Output Current
VIN
-
2.7
-
-
5.5
-
V
①
①
When connected to external components (*1),
IOUTMAX
1500
mA
VIN =<C -1>
UVLO Voltage (*2)
VUVLO
VOUT=0.6V,Voltage which Lx pin holding “L” level(*6)
1.35
2.0
2.68
V
③
②
fOSC=1.2MHz
VOUT =VOUT(T) × 1.1V
-
-
-
-
-
15.0
25.0
250
400
0.0
25.0
40.0
450
825
1.0
Quiescent Current
(XC9261)
Iq
μA
fOSC=3.0MHz
fOSC=1.2MHz
VOUT =VOUT(T) × 1.1V
Quiescent Current
(XC9260)
Iq
μA
μA
ns
②
②
①
fOSC=3.0MHz
Stand-by Current
Minimum ON time
Thermal shutdown
ISTB
VCE=0.0V
When connected to external components,
VIN = <C-1>, IOUT = 1mA
tONmin
<E-5> <E-6> <E-7>
TTSD
THYS
RLXH
RLXL
-
-
-
-
-
150
30
-
℃
℃
Ω
①
①
④
④
Thermal shutdown
hysteresis
-
-
Lx SW ”H” ON Resistance
VOUT=0.6V, ILX=100mA (*3)
0.14
0.10
0.28
0.20
Lx SW ”L” ON
Resistance (*4)
VOUT=VOUT(T) V × 1.1, ILX=100mA (*3)
Ω
Lx SW ”H” Leakage Current
Lx SW ”L” Leakage Current
Current Limit (*5)
ILeakH
IleakL
ILIMH
VIN=5.5V, VCE=0V, VOUT=0V, VLX=0.0V
VIN=5.5V, VCE=0V, VOUT=0V, VLX=5.5V
VOUT=0.6V, ILx until Lx pin oscillates
-
-
0.0
0.0
3.0
1.0
30.0
4.5
μA
μA
A
⑤
⑤
⑥
2.5
Output Voltage
Temperature
∆VOUT
/
IOUT=30mA, -40℃≦Topr≦105℃
-
±100
-
ppm/℃
①
(VOUT・∆Topr)
Characteristics
VOUT=0.6V, Applied voltage to VCE
,
CE ”H” Voltage
CE ”L” Voltage
VCEH
1.40
-
-
VIN
V
V
③
③
Voltage changes Lx to “H” level (*6)
VOUT=0.6V, Applied voltage to VCE
Voltage changes Lx to “L” level (*6)
,
(*7)
VSS
VCEL
0.30
CE ”H” Current
CE ”L” Current
ICEH
ICEL
VIN=5.5V, VCE=5.5V, VOUT=0.0V
VIN=5.5V, VCE=0.0V, VOUT=0.0V
-0.1
-
-
0.1
0.1
μA
μA
⑤
⑤
-0.1
VCE=0.0V → 5.0V VOUT=VOUT(T)V × 0.9
After "H" is fed to CE, the time by when clocks are
generated at Lx pin.
Soft-start Time
tSS
0.10
0.30
0.50
ms
③
Short Protection
Threshold
Sweeping VOUT, VOUT voltage which Lx becomes “L”
level(*6)
VSHORT
RDCHG
0.17
50
0.27
210
0.37
300
V
③
⑦
Voltage (Type B)
CL Discharge (Type B)
VCE=0V, VOUT=4.0V
Ω
Unless otherwise stated, VIN=5V, VCE=5V, VOUT(T)=Nominal Value,
NOTE:
(*1) When the difference between the input and the output is small, 100% duty might come up and internal control circuits keep P-ch driver turning
on even though the output current is not so large.
If current is further pulled from this state, output voltage will decrease because of P-ch driver ON resistance.
(*2) Including UVLO detect voltage, hysteresis operating voltage range for UVLO release voltage.
(*3)
R
LXH
= (VIN - Lx pin measurement voltage) / 100mA, RLXL= Lx pin measurement voltage / 100mA
(*4) Design value for the XC9261 series.
(*5) Current limit denotes the level of detection at peak of coil current.
(*6) "H"=VIN ~ VIN - 1.2V, "L"=- 0.1V ~ + 0.1V
(*7) AGND in the case of USP-6C.
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