參數(shù)資料
型號: EL7583IREZ-T7
廠商: INTERSIL CORP
元件分類: 穩(wěn)壓器
英文描述: 3-Channel DC/DC Converter
中文描述: 1.75 A SWITCHING REGULATOR, 1000 kHz SWITCHING FREQ-MAX, PDSO20
封裝: ROHS COMPLIANT, MO-153, HTSSOP-20
文件頁數(shù): 12/16頁
文件大?。?/td> 531K
代理商: EL7583IREZ-T7
12
FN7335.5
May 12, 2006
Two-Stage Positive Charge Pump Circuit
The maximum V
ON
output voltage for N+1 stage charge pump is:
R
11
and R
12
set the V
ON
output voltage:
where V
FBP
is 1.310V.
Negative Charge Pump Design Considerations
The criteria for the negative charge pump is similar to the
positive charge pump. For a single stage charge pump, the
maximum V
OFF
output voltage is:
Similar to positive charge pump, if additional stage is
required, the LX switching signal is recommended to drive
the additional charge pump diodes. The figure on the next
page shows a two stage negative charge pump circuit.
-
+
+
-
V
SSP
DRNP
FBP
1.265V
V
DDP
C
CPP
C
OUT1
V
(5V-17V)
V
LX
C
OUT1
R
12
R
11
C
CPP
V
ON
R
ONP
R
ONN
V
ON
max
(
)
2
V
DDP
- I
OUT
2
R
ONN
(
R
ONP
)
- 2
V
DIODE
- I
OUT
S
I
OUT
CPP
×
-------------------------------------------
×
×
+
×
×
×
- I
OUT
S
OUT1
-----------------------------------------------
×
N
V
LX
max
(
)
- N
2
V
DIODE
I
OUT
S
CPP
-------------------------------------------
×
+
×
×
×
0.5
F
S
C
OUT1
×
+
+
V
ON
V
FBP
R
--------------------------
R
+
11
×
=
V
OFF
max
(
)
I
OUT
2
R
ONN
(
R
ONP
)
2
V
DIODE
- I
OUT
S
CPN
--------------------------------------------
×
×
+
+
×
×
- I
OUT
S
OUT2
-----------------------------------------------
×
- V
DDN
EL7583
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