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參數(shù)資料
| 型號(hào)： | MAX868 |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | Regulated, Adjustable -2x Inverting Charge Pump |
| 中文描述： | 穩(wěn)壓型、可調(diào)節(jié)、-2倍壓反相電荷泵 |
| 文件頁(yè)數(shù)： | 4/12頁(yè) |
| 文件大小： | 152K |
| 代理商： | MAX868 |
M
Regulated, Adjustable -2x
Inverting Charge Pump
4
_______________________________________________________________________________________
____________________________Typic al Operating Charac teristic s (c ontinued)
(Circuit of Figure 5, T
A
= +25°C, unless otherwise noted.)
0
0.01
1
0.1
10
100
EFFICIENCY vs. LOAD CURRENT
(V
IN
= 5V)
10
M
LOAD CURRENT (mA)
E
50
40
30
20
60
70
80
V
OUT
= -5V
V
OUT
= -7.5V
V
OUT
= -3.3V
0
0.01
1
0.1
10
100
EFFICIENCY vs. LOAD CURRENT
(V
IN
= 3.3V)
10
M
LOAD CURRENT (mA)
E
50
40
30
20
60
70
80
V
OUT
= -5V
V
OUT
= -3.3V
0
0.01
1
0.1
10
100
EFFICIENCY vs. LOAD CURRENT
(V
IN
= 5V)
10
M
LOAD CURRENT (mA)
E
50
40
30
20
60
70
80
CIRCUIT OF FIGURE 6
V
OUT
= -2.5V
V
OUT
= -3.3V
0
60
40
20
100
80
180
160
140
120
200
-40
-20
0
20
40
60
80
100
OPEN-LOOP OUTPUT IMPEDANCE
vs. TEMPERATURE
(FB = IN, V
OUT
= -2 x V
IN
)
M
TEMPERATURE (°C)
O
)
V
IN
= 2V
V
IN
= 3.3V
V
IN
= 5V
20
μ
s/div
20mV/div
V
IN
= 3.3V, V
OUT
= -3.3V, I
LOAD
= 5mA,
V
OUT
AC COUPLED (20mV/div), C
OUT
= 10
μ
F CERAMIC
OUTPUT VOLTAGE RIPPLE
(C
OUT
= 10
μ
F CERAMIC)
M
0
60
40
20
100
80
180
160
140
120
200
-40
-20
0
20
40
60
80
100
OPEN-LOOP OUTPUT IMPEDANCE
vs. TEMPERATURE
(FB = IN, V
OUT
= -V
IN
)
M
TEMPERATURE (°C)
O
)
V
IN
= 2V
CIRCUIT OF FIGURE 6
V
IN
= 3.3V
V
IN
= 5V
20
μ
s/div
20mV/div
V
IN
= 3.3V, V
OUT
= -3.3V, I
LOAD
= 5mA,
V
OUT
AC COUPLED (20mV/div), C
OUT
= 10
μ
F (AVX TPS)
OUTPUT VOLTAGE RIPPLE
(C
OUT
= 10
μ
F TANTALUM)
M
20
μ
s/div
20mV/div
V
IN
= 3.3V, V
OUT
= -3.3V, I
LOAD
= 5mA,
V
OUT
AC COUPLED (20mV/div), C
OUT
= 2.2
μ
F CERAMIC
OUTPUT VOLTAGE RIPPLE
M
200
μ
s/div
10mA/div
20mV/div
V
IN
= 5V, V
OUT
= -5V, I
OUT
= 1mA TO11mA STEP
LOAD-TRANSIENT RESPONSE
M
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