BD95242MUV_10 Datasheet, PDF (7/21 Pages) Rohm – 2ch Switching Regulator for Desktop PC

Technical Note
●Reference data – Continued
1.5
1200
VIN=12V, Vo=5.0V
500 ^{CONT Mode (VIN=19)}
CONT Mode (VIN=12)
450 _{CONT Mode (VIN=7)}
1000
400
1.0
800
Vo=5.0V
600
350
QLLM, SLLM (VIN=19)
300 _{QLLM, SLLM (VIN=12)}
250 ^{QLLM, SLLM (VIN=7)}
200
0.5
400
Vo=3.3V
200
CONT Mode (5.0V)
CONT Mode (3.3V)
QLLM, SLLM (3.3V)
150 QLLM
(VIN=7,12,19)
100
SLLM
QLLM, SLLM (3.3V)
50
0.0
0.00
0.40
0.80
1.20
1.60
FS[V]
0
0
0.00
0.40
0.80
1.20
1.60
0.001
0.01
0.1
1
10
FS[V]
Io [A]
Fig.13 FS-ON TIME
Fig.14 FS- frequency
Fig.15 Io-frequency (Vo1=5.0V)
100
90
80
70
60
50
40
30
20
10
0
1
SLLM
QLLM
10
CONT Mode
100
Io [mA]
1000
10000
Fig.16 Io-efficiency (VIN=12V, Vo1=5.0V)
100
CONT Mode
10
QLLM
1
SLLM
0.1
7
9 11 13 15 17 19 21 23 25
VIN [V]
Fig.17 VIN-IVIN (Io=0A, Vo1=5.0V)
500
480 ^{CONT Mode}
460
440
(Io=5A)
420
400
(Io=2A)
380
360
340
320
300
5
10
15
20
V IN [V ]
Fig.18 VIN-frequency (Vo1=5.0V)
www.rohm.com
© 2010 ROHM Co., Ltd. All rights reserved.
7/20
2010.03 - Rev.C