R1225N Datasheet, PDF (14/31 Pages) RICOH electronics devices division – PWM/VFM step-down DC/DC Converter

R1225N
G) CE “H” Input Current, CE “L” Input Current
H) Output Delay Time for Protection Circuit
EXT
GND
VOUT
VIN
DLY
CE A
Oscilloscope
EXT
GND
VOUT
VIN
DLY
CE
C3 ₊
-
C2
3026  +$70 +LWDFKL
6'  5%' 5RKP
&  —) 7DQWDOXP 7\SH
/  &'0& 6XPLGD —+
&  —) 7DQWDOXP 7\SH
& Q) &HUDPLF 7\SH
TYPICAL CHARACTERISTICS
$OPRVW DOO WKH FKDUDFWHULVWLFV RI 51 VHULHV DUH VDPH DV 51 6HULHV ([FHSW WKH IROORZLQJ FKDUDFWHULVWLFV
UHIHU WR WKH GDWDVKHHW RI 51 6HULHV
1) Efficiency vs. Output Current
R1225N182A (VIN=3.3V) CDRH127-10uH
100
90
80
70
60
50
40
30
20
10
0
0.1
1
10 100 1000 10000
Output Current IOUT (mA)
R1225N182A (VIN=5.0V) CDRH127-10uH
100
90
80
70
60
50
40
30
20
10
0
0.1
1
10 100 1000 10000
Output Current IOUT (mA)
R1225N182B (VIN=3.3V) CDRH127-10uH
100
90
80
70
60
50
40
30
20
10
0
0.1
1
10 100 1000 10000
Output Current IOUT (mA)
R1225N182B (VIN=5.0V) CDRH127-10uH
100
90
80
70
60
50
40
30
20
10
0
0.1
1
10 100 1000 10000
Output Current IOUT (mA)
14