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參數資料
| 型號： | GS7660IS |
| 廠商： | Vishay Intertechnology,Inc. |
| 英文描述： | Switched-Capacitor Voltage Converter |
| 中文描述： | 開關電容電壓轉換器 |
| 文件頁數： | 1/9頁 |
| 文件大小： | 112K |
| 代理商： | GS7660IS |
Description
The GS7660 is a monolithic CMOS switched capacitor
voltage converter, designed to be an improved direct
replacement of the popular ICL7660, MAX1044 and
LTC1044. They perform supply voltage conversions from
positive to negative for an input voltage range of +1.5V to
+6.0V to their negative complements of –1.5V to –6.0V.
The input voltage can also be doubled (V
OUT
= 2V
IN
),
halved (V
OUT
= V
IN
/2), or multiplied (V
OUT
= ± n.V
IN
).
Contained on the chip are a series Power Supply regula-
tor, Oscillator, control Circuitry and four Power MOS
Switches. The oscillator, when unloaded, oscillates at a
nominal frequency of 10 kHz, with an Input voltage of 5.0V.
This frequency can be lowered by the addition of an external
capacitor to the “Osc” terminal or overdriven by an external
frequency source.
An Oscillator “boost” function is available to increase the
oscillator frequency which will optimize performance of
certain parameters. The Lv input can be connected to
ground to improve low voltage operation (V
IN
≤
3V), or left
open for input voltages greater than 3V to reduce power
dissipation.
The GS7660 provides superior performance over earlier
designs by combining low output impedance and low qui-
escent current with high efficiency and by eliminating diode
voltage drop losses. The only external components
required are two low cost electrolytic capacitors.
8 Pin Dip
SO-8
Features
Low output impedance ( typical 35
at V
IN
= 5V )
Low quiescent current ( typical 36
μ
A at V
IN
= 5V)
High power conversion efficiency ( typical 98% )
Simple and accurate voltage conversion from
positive to negative polarities
Improved latch-up protection
No external diodes required
Applications
–
5V supply from + 5V logic supply
EIA/TIA
–
232E and EIA/TIA
–
562 power supplies
Portable telephones
Data acquisition systems
Personal communications equipment
Panel meters
Handheld instruments
Typical Application Circuit
10
μ
F
C1
V
OUT
= --V
IN
10
μ
F
C2
V
IN
(1.5V to 6V)
Required for
V
IN
3V
+
+
GS7660
Negative Voltage Converter
1
2
3
4
5
6
7
8
GS7660
Vishay
formerly General Semiconductor
Document Number 74819
24-May-02
www.vishay.com
1
New Product
Switched-Capacitor Voltage Converter
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