XC9236 Torex Semiconductor, XC9236 Datasheet - Page 8

• Manufacturer Part Number: XC9236
• Description: 600mA Driver Tr. Built-In, Synchronous Step-Down DC/DC Converters
• Manufacturer: Torex Semiconductor

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■ELECTRICAL CHARACTERISTICS (Continued)
●PFM Switching Current (I
Minimum operating voltage is 2.0V.
ex.) Although when V
●Input Voltage (V
●Soft-Start Time, Setting Voltage（XC9235B/36B/37B Series only）
■TYPICAL APPLICATION CIRCUIT
XC9235/XC9236/XC9237
1.2V＜V
SETTING VOLTAGE
XC9235B/XC9237B
XC9236B/XC9237B
V
1.8V≦V
OUT(E)
XC9235B/
XC9236B
SERIES
OUT(E)
FOSC
C-1
≦1.2V
OUT(E)
≦1.75V
OUT(E)
IN
) for Measuring Maximum PFM Switching Current (MAXI
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.
1200kHz
1200kHz
1200kHz
1200kHz
1200kHz
1200kHz
3000kHz
3000kHz
PFM
FOSC
) by Oscillation Frequency and Setting Voltage
MIN.
140
130
120
V
OUT(E)
1.2MHz
SETTING VOLTAGE
+0.5V
0.8≦V
1.5≦V
1.8≦V
2.5≦V
0.8≦V
2.5≦V
0.8≦V
1.8≦V
1.2MHz
TYP.
180
170
160
Series
OUT(E)
OUT(E)
OUT(E)
OUT(E)
OUT(E)
OUT(E)
OUT(E)
OUT(E)
<1.5
<1.8
<2.5
<4.0
<2.5
<4.0
<1.8
<4.0
MAX.
240
220
200
V
OUT(E)
3.0MHz
MIN.
●FOSC=3.0MHz
●FOSC=1.2MHz
-
-
-
-
-
-
-
-
C
C
C
C
L:
L:
+1.0V
IN
IN
L
L
:
:
:
:
MIN.
190
180
170
1.5μH
4.7μF
10μF
4.7μH
4.7μF
10μF
PFM
) Limit
TYP.
250
320
280
320
280
320
280
320
(NR3015, TAIYO YUDEN)
(Ceramic)
(Ceramic)
(NR4018, TAIYO YUDEN)
(Ceramic)
(Ceramic)
3.0MHz
TYP.
260
240
220
400
500
400
500
400
500
400
500
MAX.
μ
μ
μ
μ
μ
μ
μ
μ
s
s
s
s
s
s
s
s
MAX.
350
300
270
(mA)