R1224N Datasheet, PDF (19/42 Pages) RICOH electronics devices division – PWM/VFM step-down DC/DC Converter

R1224N
R1224N502M L=27µH
5.100
5.080
5.060
5.040
5.020
5.000
4.980
4.960
4.940
4.920
4.900
0.1
VIN6.5V
VIN12V
VIN15V
*Note: Typical characteristics 1) are obtained with using
the following components;
PMOS: IRF7406 (IR)
L : CDRH127-100MC (Sumida: 10µH)
SD : RB083L-20 (Rohm)
C1 : 25SC47 (Sanyo/OS-con: 47µF/25V)×2
C2 : 0.1µF (Ceramic Type)
C3 : 10SA220 (Sanyo/OS-con: 220µF/10V)
R1 : 10Ω
1
10 100 1000 10000
Output Current lOUT(mA)
2) Efficiency vs. Output Current (*Note)
R1224N182F (VIN=3.3V) CDRH127-10µH
100
90
80
70
60
50
40
30
20
10
0
0.1
1
10 100 1000 10000
Output Current lOUT(mA)
R1224N182F (VIN=5.0V) CDRH127-10µH
100
90
80
70
60
50
40
30
20
10
0
0.1
1
10 100 1000 10000
Output Current lOUT(mA)
R1224N182G (VIN=3.3V) CDRH127-10µH
100
90
80
70
60
50
40
30
20
10
0
0.1
1
10 100 1000 10000
Output Current lOUT(mA)
R1224N182G (VIN=5.0V) CDRH127-10µH
100
90
80
70
60
50
40
30
20
10
0
0.1
1
10 100 1000 10000
Output Current lOUT(mA)
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