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參數(shù)資料
| 型號： | AIC1652CN |
| 廠商： | Analog Integrations Corporation |
| 英文描述： | MICROPOWER INVERTING DC/DC CONVERTER |
| 中文描述： | 微功耗倒轉(zhuǎn)DC / DC轉(zhuǎn)換器 |
| 文件頁數(shù)： | 1/6頁 |
| 文件大?。?/td> | 57K |
| 代理商： | AIC1652CN |
AIC1652
MICROPOWER INVERTING DC/DC CONVERTER
SPEC NO: DS-1652-02 DEC 27, 00
ANALOG INTEGRATIONS CORPORATION
www.analog.com.tw
4F, 9 Industry E. 9th Road, Science-based Industrial Park , Hsinchu, Taiwan, R.O.C. TEL: (8863)577-2500 FAX:(8863)577-2510
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F E ATUR E S
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2.4V to 7V Input Voltage Operation.
Adjustable Output Voltage up to -40V.
Low Quiescent Current at 80
μ
A.
Pulse Frequency Modulation Maintains High
Efficiency (87%).
70KHz to 160KHz Switching Frequency.
Power-Saving Shutdown Mode (0.7
μ
A Typical).
High Efficiency with Low Cost External PNP
Bipolar Transistor.
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APPLICATIONS
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Negative LCD Contrast Bias for
1. Notebook & Palmtop Computers.
2. Pen-Based Data System.
3. Portable Data Collection Terminals.
4. Personal Digital Assistants.
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Negative Voltage Supply.
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DE SCR IPTION
The AIC1652 is a high performance inverting
DC/DC converter, designed to drive an external
power switch to generate programmable negative
voltages. In the particularly suitable LCD bias con-
trast application, efficiency of 87% can be
achieved with low cost PNP bipolar transistor driv-
ers. Output voltage can be scaled to -40V or
greater by two external resistors. A pulse frequen-
cy modulation scheme is employed to maintain
high efficiency conversion under wide input voltage
range. Quiescent current is about 80
μ
A and can
be reduced to 0.7
μ
A in shutdown mode. Switching
frequency being around 70KHz to 160KHz range,
small size switching components are ideal for bat-
tery powered portable equipments, like notebook
and palmtop computers.
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T YPICAL APPLICAT ION CIR CUIT
D1
1N5819
AIC1652
CL
DHI
DLOW
FB
GND
SHDN
VIN
VREF
C3
10nF
C4
0.047
μ
F
150
μ
H
*L
Q1
9012
RB
470~1.8K
R1
1M
C2
C1
V
IN
2.4V ~ 7V
V
OUT
-12V~ -40V
-10mA
100
μ
F
*
Sumida CD-54 Series
V
OUT
= -1.22V x R1/R2
100
μ
F
+
+
R2
100K
Negative LCD Contrast Bias Power Supply
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OR DE R ING INFOR MATION
AIC1652 XX
PACKAGE TYPE
N: PLASTIC DIP
S: SMALL OUTLINE
TEMPERATURE RANGE
C=0
°
C~+70
°
C
ORDER NUMBER
AIC1652CN
(PLASTIC DIP)
PIN CONFIGURATION
AIC1652CS
(PLASTIC SO)
TOP VIEW
DLOW
1
3
4
2
8
6
5
7
CL
VREF
SHDN
FB
DHI
GND
VIN
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| AIC1653CVTR | 制造商:AIC 制造商全稱:Analog Intergrations Corporation 功能描述:Micropower Inverting DC/DC Converter in SOT-23-5 |
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