参数资料
型号: PM6670STR
厂商: STMICROELECTRONICS
元件分类: 稳压器
英文描述: 3 A SWITCHING CONTROLLER, QCC24
封装: 4 X 4 MM, LEAD FREE, VFQFPN-24
文件页数: 6/54页
文件大小: 742K
代理商: PM6670STR
Typical operating characteristics
PM6670S
14/54
Doc ID 14432 Rev 4
5
Typical operating characteristics
Figure 3.
Efficiency vs
load - 1.5 V and 1.8 V, VIN = 12 V
Figure 4.
Switching frequency vs
load - 1.8 V, VIN = 12 V
Figure 5.
Switching frequency vs
input voltage, 1.8 V
Figure 6.
Switching frequency vs
input voltage, 1.5 V
Figure 7.
VDDQ line regulation, 1.8 V, 7 A
Figure 8.
VDDQ line regulation, 1.5 V, 7 A
0
10
20
30
40
50
60
70
80
90
100
0.001
0.01
0.1
1
10
Output current (A)
E
ffi
c
ie
n
cy
(%
)
DDR2 - Forced PWM
DDR2 - No-Audible P-S
DDR2 - Pulse-Skip
DDR3 - Forced PWM
DDR3 - No-Audible P-S
DDR3 - Pulse-Skip
0
10
20
30
40
50
60
70
80
90
100
0.001
0.01
0.1
1
10
Output current (A)
E
ffi
c
ie
n
cy
(%
)
DDR2 - Forced PWM
DDR2 - No-Audible P-S
DDR2 - Pulse-Skip
DDR3 - Forced PWM
DDR3 - No-Audible P-S
DDR3 - Pulse-Skip
0
50
100
150
200
250
300
350
400
450
500
0.001
0.01
0.1
1
10
Output current (A)
S
w
ic
hi
ng
fr
eq
u
en
c
y(
kH
z)
Forced PWM
No-Audible P-S
Pulse-Skip
0
50
100
150
200
250
300
350
400
450
500
0.001
0.01
0.1
1
10
Output current (A)
S
w
ic
hi
ng
fr
eq
u
en
c
y(
kH
z)
Forced PWM
No-Audible P-S
Pulse-Skip
150
200
250
300
350
400
450
500
0.0
5.0
10.0
15.0
20.0
25.0
30.0
Input voltage (V)
S
w
it
ch
ing
f
re
q
u
en
cy
(k
Hz
)
150
200
250
300
350
400
450
500
0.0
5.0
10.0
15.0
20.0
25.0
30.0
Input voltage (V)
S
w
it
ch
ing
f
re
q
u
en
cy
(k
Hz
)
pg
150
200
250
300
350
400
450
500
0.0
5.0
10.0
15.0
20.0
25.0
30.0
Input voltage (V)
S
w
it
ch
in
g
f
req
u
en
cy
(k
H
z)
pg
150
200
250
300
350
400
450
500
0.0
5.0
10.0
15.0
20.0
25.0
30.0
Input voltage (V)
S
w
it
ch
in
g
f
req
u
en
cy
(k
H
z)
1.7940
1.7950
1.7960
1.7970
1.7980
1.7990
1.8000
0.0
5.0
10.0
15.0
20.0
25.0
30.0
Input voltage (V)
O
u
tp
u
tvo
lt
ag
e(
V
)
Forced PWM
No-Audible P-S
Pulse-Skip
1.7940
1.7950
1.7960
1.7970
1.7980
1.7990
1.8000
0.0
5.0
10.0
15.0
20.0
25.0
30.0
Input voltage (V)
O
u
tp
u
tvo
lt
ag
e(
V
)
Forced PWM
No-Audible P-S
Pulse-Skip
1.4940
1.4945
1.4950
1.4955
1.4960
1.4965
1.4970
1.4975
1.4980
0.0
5.0
10.0
15.0
20.0
25.0
30.0
Input voltage (V)
O
u
tp
u
tvo
lt
ag
e
(V
)
Forced PWM
No-Audible P-S
Pulse-Skip
1.4940
1.4945
1.4950
1.4955
1.4960
1.4965
1.4970
1.4975
1.4980
0.0
5.0
10.0
15.0
20.0
25.0
30.0
Input voltage (V)
O
u
tp
u
tvo
lt
ag
e
(V
)
Forced PWM
No-Audible P-S
Pulse-Skip
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