XC9128/XC9129
Series
■ELECTRICAL
CHARACTERISTICS
XC9128/XC9129 Series
PARAMETER
Input Voltage
FB Voltage
Output Voltage Setting Range
Operation Start Voltage
SYMBOL
V
IN
V
FB
V
OUTSET
V
ST1
CONDITIONS
-
Topr=25
o
C
MIN.
-
(*8)
TYP.
-
0.45
-
-
-
0.8
0.7
3
30
28
2
2
1.20
92
-
250
93
0.20
0.20
(*1)
1
1.5
3.5
MAX.
6.0
0.46
5.3
0.8
0.9
(*1)
-
-
6
80
78
10
10
1.38
96
0
400
-
0.35
(*1)
0.35
(*1)
-
2.0
-
UNITS
V
V
V
V
V
V
V
mA
μA
μA
μA
MHz
%
%
mA
%
Ω
Ω
μA
A
ms
CIRCUIT
-
④
①
①
①
①
①
②
②
③
②
④
④
④
①
①
⑤
⑦
⑤
①
①
Oscillation Start Voltage
Operation Hold Voltage
Supply Current 1
Supply Current 2 (XC9128)
Supply Current 2 (XC9129)
Input Pin Current
Stand-by Current
Oscillation Frequency
Maximum Duty Cycle
Minimum Duty Cycle
PFM Switching Current
Efficiency
(*2)
L
X
SW "Pch" ON Resistance
L
X
SW "Nch" ON Resistance
L
X
Leak Current
Current Limit
(*5)
Integral Latch Time (XC9128)
(*6)
Integral Latch Time (XC9129)
Soft-Start Time 1
(*6)
V
ST2
V
HLD
I
DD1
I
DD2
I
BAT
I
STB
f
OSC
D
MAX
D
MIN
I
PFM
EFFI
R
LxP
R
LxN
I
LXL
I
LIM
t
LAT
V
OUT
=V
IN
=3.3V, V
FO
=0V
Voltage to start oscillation during
V
FB
= 0.46V
→
0.44V
-
Connect to external components,
R
L
=1kΩ
Connect to external components,
R
L
=33Ω
Voltage to start oscillation during
V
IN
=0V
→
1V, R
L
=1kΩ
Connect to external components, R
L
=1kΩ
V
IN
= V
OUT
=3.3V, V
FB
=0.45×0.9
V
IN
= V
OUT
=3.3V
V
FB
=0.45×1.1 (Oscillation stop),
V
MODE
=0V
V
IN
=3.3V, V
OUT
=1.8V, V
EN
=0V
V
IN
= V
OUT
=3.3V, V
EN
=0V
(*8)
V
IN
= V
OUT
=3.3V, V
FO
=0V ,
V
FB
=0.45×0.9
V
IN
= V
OUT
=3.3V, V
FO
=0V
(*8)
,
V
FB
=0.45×0.9
V
IN
= V
OUT
=3.3V, V
FO
=0V
(*8)
,
V
FB
=0.45×1.1
Connect to external components,
V
MODE
=0V, R
L
=330Ω
Connect to external components,
R
L
=33Ω
V
IN
=V
Lx
=V
OUT
+50mV,
V
FB
=0.45×1.1
(*3)
V
IN
=V
OUT
=3.3V, Lx =50mV
(*4)
V
IN
=V
OUT
= V
LX
, V
FB
=0V
V
OUT
>2.5V
Time to stop oscillation during
R
L
=33Ω
→
3.3Ω, V
FO
=L
→
H
Time to stop oscillation during
R
L
=33Ω
→
3.3Ω
Time to start oscillation during V
EN
=0V
→
V
IN
at V
IN
= V
OUT
=3.3V, V
FO
=0V,
V
FB
=0.45×0.95
V
IN
= V
OUT
=3.3V, V
FO
=0V,
V
FB
=0.45×0.95
Time to start oscillation during
V
AEN/
=V
IN
→0V.
V
IN
= V
OUT
=3.3V, V
FO
=0V,
V
FB
=0.45×0.8
Time to start oscillation during
V
AEN/
=V
IN
→0V
-
-
V
IN
=3.3V
Voltage to stop oscillation during
V
OUT
=1.56V→1.3V
V
IN
=V
OUT
=3.3V, V
FO
=0.25V
V
IN
= V
OUT
=3.3V, V
EN
=0V ,V
FO
=1V
0.44
1.8
-
-
-
-
-
-
-
-
-
1.02
85
-
-
-
-
-
-
1.2
-
t
SS1
1.7
5.3
10.5
ms
④
Soft-Start Time 2
(*7)
t
SS2
-
0.02
0.04
ms
④
Soft-Start Time 3
(*7)
Thermal Shutdown
Temperature
Hysteresis Width
Output Voltage Drop
Protection
(*6)
FO Output Current
(*7)
FO Leakage Current
(*7)
t
SS3
1.7
5.3
10.5
ms
o
o
④
T
TSD
T
HYS
V
LVP
I
FO_OUT
I
FO_Leak
-
-
1.3
1.3
-
150
20
1.48
1.7
0
-
-
1.56
2.2
1
C
C
-
-
⑥
④
④
V
mA
μA
5/13
TOREX [ TOREX SEMICONDUCTOR ]
