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參數(shù)資料
| 型號： | AIC1650CN |
| 廠商： | Analog Integrations Corporation |
| 英文描述： | 3-Cell, High-Efficiency, Inverting DC/DC Converter |
| 中文描述： | 3節(jié)電池，高效率，反向直流/直流轉換器 |
| 文件頁數(shù)： | 1/6頁 |
| 文件大?。?/td> | 206K |
| 代理商： | AIC1650CN |
AIC1650
3-Cell, High-Efficiency, Inverting DC/DC
Converter
Analog Integrations Corporation
4F, 9, Industry E. 9th Rd, Science Based Industrial Park, Hsinchu Taiwan, ROC
www.analog.com.tw
DS-1650-02 Dec 27, 00
TEL: 886-3-5772500
FAX: 886-3-5772510
1
FEATURES
4V to 20V Input Voltage Operation.
Adjustable Output Voltage up to -40V.
Low Quiescent Current at 100
μ
A.
Pulse Frequency Modulation Maintains High
Efficiency (max. 90%).
100KHz to 320KHz Switching Frequency.
Power-Saving Shutdown Mode (8
μ
A Typical).
High Efficiency with Low Cost External PNP
Bipolar Transistor.
APPLICATIONS
Negative LCD Contrast Bias for
1. Notebook & Palmtop Computers.
2. Pen-Based Data System.
3. Portable Data Collection Terminals.
4. Personal Digital Assistants.
Negative Voltage Supply.
DESCRIPTION
The AIC1650 is a high performance inverting
DC/DC converter, designed to drive an external
power switch to generate programmable nega-
tive voltages. In the particularly suitable LCD
bias contrast application, maximum efficiency of
90% can be achieved with low cost PNP bipolar
transistor drivers. 4V to 20V input operation
range allows the AIC1650 to be powered di-
rectly by the battery pack in most battery-
operated applications for greater efficiency.
Output voltage can be scaled to -40V or greater
by two external resistors. A pulse frequency
modulation scheme is employed to maintain
high efficiency conversion under wide input
voltage range. Quiescent current is about
100
μ
A and can be reduced to 8
μ
A in shutdown
mode. Switching frequency being around
100KHz to 320KHz range, small size switching
components are ideal for battery powered port-
able equipments, like notebook and palmtop
computers.
TYPICAL APPLICATION CIRCUIT
D1
1N5819
AIC1650
CL
DHI
DLOW
FB
GND
SHDN
VIN
VREF
C3
10nF
C4
0.047
μ
F
*L
150
μ
H
Q1
2N2907A
RB
1.5K~12K
R1
1M
C2
C1
V
+4V ~ 20V
V
OUT
-12V~ -40V
5V
100
μ
F
* Sumida CD-54 SERIES
V
OUT
= -1.22V x R1/R2
1
μ
F
+
+
R2
100K
Negative LCD Contrast Bias Power Supply
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| AIC1650CS | 制造商:AIC 制造商全稱:Analog Intergrations Corporation 功能描述:3-Cell, High-Efficiency, Inverting DC/DC Converter |
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| AIC1652CN | 制造商:AIC 制造商全稱:Analog Intergrations Corporation 功能描述:MICROPOWER INVERTING DC/DC CONVERTER |
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