參數(shù)資料
型號(hào)： ICL7660ACPA
廠商： INTERSIL CORP
元件分類： 穩(wěn)壓器
英文描述： CMOS Voltage Converters
中文描述： SWITCHED CAPACITOR CONVERTER, 10 kHz SWITCHING FREQ-MAX, PDIP8
封裝： PLASTIC, DIP-8
文件頁(yè)數(shù)： 6/12頁(yè)
文件大?。?/td> 116K
代理商： ICL7660ACPA
M
current is: I = f x
Q = f x C1(V+ - V
). Rewriting this
equation in Ohm’s law form defines an equivalent resis-
tance synthesized by the switched-capacitor circuit
where:
(V+ - V
1 / (f x C1)
and
where f is one-half the oscillator frequency. This resis-
tance is a major component of the output impedance of
switched-capacitor circuits like the MAX1044/ICL7660.
As shown in Figure 4, the MAX1044/ICL7660 contain
MOSFET switches, the necessary transistor drive cir-
cuitry, and a timing oscillator.
________________Design Information
The MAX1044/ICL7660 are designed to provide a
simple, compact, low-cost solution where negative or
doubled supply voltages are needed for a few low-
power components. Figure 5 shows the basic negative
voltage converter circuit. For many applications, only
two external capacitors are needed. The type of
capacitor used is not critical.
Proper Use of the Low-V oltage (LV ) Pin
Figure 4 shows an internal voltage regulator inside the
MAX1044/ICL7660. Use the LV pin to bypass this
regulator, in order to improve low-voltage performance
I
)
R
1
f x C1
OUT
EQUIV
=
=
S witc hed-Capac itor Voltage Converters
6
_______________________________________________________________________________________
S1
V+
S2
S3
S4
C1
C2
V
OUT
= -(V+)
Figure 2. Ideal Voltage Inverter
V+
C1
f
C2
R
LOAD
V
OUT
Figure 3a. Switched Capacitor Model
R
EQUIV
=
R
EQUIV
V
OUT
R
LOAD
1
V+
f
×
C1
C2
Figure 3b. Equivalent Circuit
1M
BOOST
pin 1
OSC
pin 7
LV
pin 6
GND
pin 3
CAP-
pin 4
S2
S1
S4
S3
CAP+
pin 2
V+
pin 8
V
pin 5
÷ 2
Q
O
I
R
Q
Figure 4. MAX1044 and ICL7660 Functional Diagram
相關(guān)PDF資料
PDF描述
ICL7660CBA CMOS Voltage Converters
ICL7660CBA-T CMOS Voltage Converters
ICL7660MTV CMOS Voltage Converters
ICL7660CPA CMOS Voltage Converters
ICL7660AIBA Circular Connector; No. of Contacts:15; Series:MS27473; Body Material:Aluminum; Connecting Termination:Crimp; Connector Shell Size:14; Circular Contact Gender:Socket; Circular Shell Style:Straight Plug; Insert Arrangement:14-15 RoHS Compliant: No
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
ICL7660ACPAZ 功能描述:電荷泵 W/ANNEAL CMOS VAGE CNVRTR COM RoHS:否 制造商:Maxim Integrated 功能:Inverting, Step Up 輸出電壓:- 1.5 V to - 5.5 V, 3 V to 11 V 輸出電流:100 mA 電源電流:1 mA 最大工作溫度:+ 70 C 封裝 / 箱體:SOIC-8 Narrow 封裝:Tube
ICL7660AIBA 功能描述:電荷泵 CMOS VAGE CNVRTR IND RoHS:否 制造商:Maxim Integrated 功能:Inverting, Step Up 輸出電壓:- 1.5 V to - 5.5 V, 3 V to 11 V 輸出電流:100 mA 電源電流:1 mA 最大工作溫度:+ 70 C 封裝 / 箱體:SOIC-8 Narrow 封裝:Tube
ICL7660AIBA-T 功能描述:電荷泵 CMOS VAGE CNVRTR IND TAPE RoHS:否 制造商:Maxim Integrated 功能:Inverting, Step Up 輸出電壓:- 1.5 V to - 5.5 V, 3 V to 11 V 輸出電流:100 mA 電源電流:1 mA 最大工作溫度:+ 70 C 封裝 / 箱體:SOIC-8 Narrow 封裝:Tube
ICL7660AIBA-TS2380 制造商:Rochester Electronics LLC 功能描述:- Bulk
ICL7660AIBAZA 功能描述:電荷泵 W/ANNEAL CMOS VAGE CNVRTR IND RoHS:否 制造商:Maxim Integrated 功能:Inverting, Step Up 輸出電壓:- 1.5 V to - 5.5 V, 3 V to 11 V 輸出電流:100 mA 電源電流:1 mA 最大工作溫度:+ 70 C 封裝 / 箱體:SOIC-8 Narrow 封裝:Tube
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