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| XC9235_1 Datasheet, PDF (11/33 Pages) Torex Semiconductor – 600mA Driver Tr. Built-In, Synchronous Step-Down DC/DC Converters | |||
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XC9235/XC9236/XC9237
Series
ËELECTRICAL CHARACTERISTICS (Continued)
ËPFM Switching Current (IPFM) by Oscillation Frequency and Setting Voltage
SETTING VOLTAGE
VOUT(E) â¦1.2V
1.2Vï¼VOUT(E) â¦1.75V
1.8Vâ¦VOUT(E)
MIN.
140
130
120
1.2MHz
TYP.
180
170
160
MAX.
240
220
200
MIN.
190
180
170
3.0MHz
TYP.
260
240
220
(mA)
MAX.
350
300
270
ËInput Voltage (VIN) for Measuring PFM Duty Limit (DTYLIMIT_PFM)
fOSC
1.2MHz
3.0MHz
C-1
VOUT(E)+0.5V
VOUT(E)+1.0V
Minimum operating voltage is 2.0V.
ex.) Although when VOUT(E) is 1.2V and fOSC is 1.2MHz, (C-1) should be 1.7V, (C-1) becomes 2.0V for the minimum operating voltage 2.0V.
ËSoft-Start Time, Setting VoltageÊ¢XC9235B(G)/9236B(G)/9237B(G) Series onlyÊ£
SERIES
fOSC
SETTING VOLTAGE
MIN.
1.2MHz
0.8â¦V OUT(E)<1.5
-
1.2MHz
XC9235B(G)/XC9237B(G)
1.5â¦V OUT(E)<1.8
-
1.2MHz
1.8â¦V OUT(E)<2.5
-
1.2MHz
2.5â¦V OUT(E)<4.0
-
XC9236B(G)
1.2MHz
0.8â¦V OUT(E)<2.5
-
1.2MHz
2.5â¦V OUT(E)<4.0
-
XC9235B(G)/
3.0MHz
0.8â¦V OUT(E)<1.8
-
XC9236B(G)/XC9237B(G) 3.0MHz
1.8â¦V OUT(E)<4.0
-
TYP.
250
320
280
320
280
320
280
320
(Ðs)
MAX.
400
500
400
500
400
500
400
500
11/33
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