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參數(shù)資料
| 型號： | SCI7661M |
| 廠商： | 愛普生（中國）有限公司 |
| 元件分類： | DC/DC變換器 |
| 英文描述： | DC-DC Converter |
| 中文描述： | DC - DC轉(zhuǎn)換 |
| 文件頁數(shù)： | 5/9頁 |
| 文件大小： | 113K |
| 代理商： | SCI7661M |
5
SCI7661C
OA
/M
OA
I
CIRCUIT DESCRIPTION
G
C-R Oscillator
The SCI7661C
/
M contains a C-R oscillator for internal
oscillation. It consists of an external resistor R
OSC
connected between the OSC1 pin and OSC2 pin.
G
Voltage Converters
The voltage converters double
^
triple the input supply voltage (V
IN
) using clocks generated by the C-R oscillator
G
Reference Voltage Generator and Voltage Regulator
The reference voltage generator produces reference
voltage needed for operation of regulator circuit. The
voltage regulator is used to regulate a boosted output
voltage and its circuit contains a power-off function which
uses signals from the system for on-off control of the
V
reg
output.
G
Temperature Gradient Selector Circut
The SCI7661C
/
M provides the V
reg
output with a temperature gradient suitable for LCD driving.
0.30
0.25
50
0
-50
0.20
0.15
0.10
0.05
0.00
V
=
-5V
V
=
-10V
C
-0.1%/
°
C
C
-0.4%/
°
C
C
-0.6%/
°
C
V
=
-15V
I
(mA)
Ta(
°
C)
V
r
(
r
(
°
C
0
-50
0
50
100
5
10
15
20
V
r
-
O
(
×
1
|
r
(
°
C
Fig:13 Regulated Output Saturation
Resistance(R
SAT
)V
reg
—V
OUT
—I
OUT
Fig:14 Output Voltage(v
reg
)vs.
Temperature(Ta)
Osc1
Osc2
Osc1
Osc2
R
OSC
C-R Oscillation
External Clock Operation
Open
External Clock
V
CC
(+5V)
V
DD
=0V
V
DD
=0V
V
IN
=-5V
V
IN
=-5V
CAP2=2V
IN
=-10V
V
OUT
=3V
IN
=-15V
(-5V)
GND
Typical Doubled Voltage Relations
Typical Tripled Voltage Relations
V
DD
P
off
RV
V
reg
Voltage Regulator
Control signal
R
RV
= 100k
to 1M
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相關(guān)代理商/技術(shù)參數(shù) |
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|---|---|
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| SCI7700YBA | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:CMOS VOLTAGE DETECTOR |
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