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參數資料
型號: ADP3607AR-5
廠商: ANALOG DEVICES INC
元件分類: 穩壓器
英文描述: 50 mA Switched Capacitor Voltage Boost with Regulated Output
中文描述: SWITCHED CAPACITOR REGULATOR, 288 kHz SWITCHING FREQ-MAX, PDSO8
封裝: SOIC-8
文件頁數: 8/8頁
文件大小: 146K
代理商: ADP3607AR-5
REV. 0
ADP3607
–8–
C
P
Regulated Adjustable Output Voltage
For the adjustable version of the ADP3607, the regulated out-
put voltage is programmed by a resistor that is inserted between
the V
SENSE
and V
OUT
pins, as illustrated in Figure 19. The in-
herent limit of the output voltage of a single doubling charge
pump stage is two times the input voltage. The scaling factor of
2.00 is reduced somewhat due to losses that increase with out-
put current. To increase the scaling factor to attain a more
positive output voltage, an external pump stage can be added
with just passive components as shown in Figure 20. That single
stage increases the scaling factor to a limit of 3, although the
diode drops will limit the ability to noticeably attain that exact
3.00 scaling factor. Even further increases can be achieved
with more external pump stages. High accuracy on the adjust-
able output is achieved through the use of precision trimmed
internal resistors, which eliminates the need to trim the external
resistor or add a second resistor to form a divider. The adjust-
able output voltage is set using the following formula:
V
R
9 5
.
OUT
=
+
1
where
V
OUT
is in volts and
R
is in k
s.
OUTPUT CURRENT – mA
3.5
0
O
10
50
+
V
O
V
IN
= 3.3V
C
O
4.7
m
F
+
C
IN
4.7
m
F
+
C
P
4.7
m
F
V
SENSE
C
P
SD
V
IN
C
P
+
V
OUT
GND
D1
IN5819
R
5
40
45
35
30
25
20
15
4.0
4.5
5.0
5.5
6.0
6.5
R = 47.5k
V
R = 24.9k
V
Figure 19. Regulated Adjustable Output Voltage
ADP3607
C
P
+
V
IN
C
P
SD
V
SENSE
V
OUT
GND
+
C
P
4.7
m
F
C
IN
4.7
m
F
V
IN
C
O
4.7
m
F
+
+
C1
4.7
m
F
D2
SD103
D1
1N5819
+
+
R1
104.5k
V
C
O2
4.7
m
F
12V
D3
IN5819
Figure 20. Regulated 12 V from a 5 V Input
Regulated Dual Supply System
The circuit in Figure 21 provides regulated positive and negative
voltages for systems that require dual supplies from a single
battery or power supply.
ADP3607-5
V
IN
C
P
+
C
P
SD
V
SENSE
V
OUT
GND
+
C
P1
10
m
F
10
m
F
C
O1
10
m
F
+
+
+5V
ADP3605
V
IN
C
P
+
C
P
SD
V
SENSE
V
OUT
GND
+
C
P2
10
m
F
C
O2
10
m
F
+
R1
16.5k
V
1%
SD103
V
IN
= +3.3V
–2.6V
Figure 21. Regulated Dual Supply System
OUTLINE DIMENSIONS
Dimensions shown in inches and (mm).
8-Lead SOIC
(SO-8)
0.1968 (5.00)
0.1890 (4.80)
8
5
4
1
0.2440 (6.20)
0.2284 (5.80)
PIN 1
0.1574 (4.00)
0.1497 (3.80)
0.0688 (1.75)
0.0532 (1.35)
SEATING
PLANE
0.0098 (0.25)
0.0040 (0.10)
0.0192 (0.49)
0.0138 (0.35)
0.0500
(1.27)
BSC
0.0098 (0.25)
0.0075 (0.19)
0.0500 (1.27)
0.0160 (0.41)
0.0196 (0.50)
8-Lead TSSOP
(RU-8)
8
5
4
1
0.256 (6.50)
0.246 (6.25)
0.177 (4.50)
0.169 (4.30)
PIN 1
0.0256 (0.65)
BSC
0.122 (3.10)
0.114 (2.90)
SPLANE
0.006 (0.15)
0.002 (0.05)
0.0118 (0.30)
0.0075 (0.19)
0.0433
(1.10)
MAX
0.0079 (0.20)
0.0035 (0.090)
0.028 (0.70)
0.020 (0.50)
8
8
0
8
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相關代理商/技術參數
參數描述
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