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參數(shù)資料
| 型號： | LPO4812 |
| 廠商： | ON SEMICONDUCTOR |
| 元件分類： | DC/DC變換器 |
| 英文描述： | Up to 500 mA, High Efficiency Synchronous Step-Down DC-DC Converter |
| 中文描述： | 多達500個，高效率同步降壓毫安型DC - DC轉(zhuǎn)換器 |
| 文件頁數(shù)： | 6/16頁 |
| 文件大小： | 162K |
| 代理商： | LPO4812 |
NCP1511
http://onsemi.com
6
Figure 4. Efficiency vs. Output Current in PWM
Mode
70
75
80
85
90
95
100
2.5
3.0
3.5
4.0
4.5
5.5
E
INPUT VOLTAGE (V)
Figure 5. Efficiency vs. Input Voltage in PWM
Mode
I
out
= 150 mA
Freq = 1.0 MHz
T
A
= 25
°
C
Figure 6. Efficiency vs. Output Current at
Different Input Voltage
80
85
90
95
100
500 600
800
1000
1200
1400
1.0 V
out
1.3 V
out
1.5 V
out
1.89 V
out
FREQUENCY (kHz)
Figure 7. Efficiency vs. Frequency at
I
out
= 150 mA
V
in
= 3.6 V
I
out
= 150 mA
T
A
= 25
°
C
PWM
Figure 8. Efficiency vs. Frequency at
I
out
= 300 mA
E
Figure 9. Efficiency vs. Output Current in
Pulsed Mode
0
10
20
30
40
50
60
70
0
100
200
300
400
500
E
I
out
(mA)
80
90
100
1.0 V
out
1.3 V
out
1.5 V
out
1.89 V
out
0
10
20
30
40
50
60
70
0
100
200
300
400
500
5.2 V
in
3.6 V
in
2.7 V
in
E
I
out
(mA)
V
out
= 1.5 V
PWM
T
A
= 25
°
C
80
90
100
700
900
1100
1300
1500
80
85
90
95
100
500 600
800
1000
1200
1400
1.0 V
out
1.3 V
out
1.5 V
out
1.89 V
out
FREQUENCY (kHz)
V
in
= 3.6 V
I
out
= 300 mA
T
A
= 25
°
C
PWM
E
700
900
1100
1300
1500
0
0.01
10
20
30
40
50
60
70
80
90
100
1
10
100
1000
E
I
out
(mA)
V
in
= 3.6 V
PM
T
A
= 25
°
C
1.0 V
out
1.3 V
out
1.5 V
out
1.89 V
out
0.1
5.0
1.0 V
out
1.3 V
out
1.5 V
out
1.89 V
out
V
in
= 3.6 V
PWM
T
A
= 25
°
C
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