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參數(shù)資料
| 型號： | SCI7654C0A |
| 廠商： | 愛普生（中國）有限公司 |
| 英文描述： | DC/DC Converter |
| 中文描述： | 直流/直流轉(zhuǎn)換器 |
| 文件頁數(shù)： | 5/10頁 |
| 文件大?。?/td> | 63K |
| 代理商： | SCI7654C0A |
5
SCI7654M
0A
/C
0A
FUNCTIONAL DESCRIPTION
Clock Generator Circuit
As the SCI7654 has a built-in clock generator circuit, it requires no external source at all. The clock rate changes
depending on the FC pin signal level, and the Low Output or High Output mode can be selected. This allows
a frequency selection according to the current capacitance and load current when the booster output impedance
changes depending on the clock rate and external booster capacitance.
Voltage Converter Circuit
The voltage converter receives a clock from the clock generator, and boosts the V
IN
input power voltage
quadruple, triple or double. Four converter circuits are required for quadruple boosting, three converts are
required for triple boosting, and dual converters are required for double boosting.
Voltage step-up diagram (during -5V input)
Reference Voltage Circuit
The SCI7654 has a built-in reference voltage circuit for the voltage regulator. The temperature coefficient of
reference voltage can be changed using pins TC1 and TC2, and a voltage having one of four types of temperature
gradients can be output at V
REG
pin for LCD driving.
V
DD
(0V)
V
IN
(-5V)
-10V
-15V
-20V
10V
15V
20V
double boosting
triple boosting
quadruple boosting
TC1
TC2
Reference Voltage, V
REF
(V)
Min.
Typ.
-1.55
-1.5
-1.70
-1.5
-1.90
-1.5
-2.15
-1.5
Temperature Coefficient, CT (%/
C)
Min.
Typ.
-0.07
-0.04
-0.25
-0.15
-0.45
-0.35
-0.75
-0.55
Mode
CT0
CT1
CT2
CT3
Max.
-1.45
-1.30
-1.10
-0.85
Max.
0
-0.07
-0.20
-0.30
H(V
DD
)
H
L(V
IN
)
L
H(V
DD
)
L(V
IN
)
H
L
FC pin
Mode
Clock Rate
Current Consumption
Output Ripple
H (V
DD
)
Low Output
4.0 kHz (Typ.)
I
OP
V
RP
L (V
IN
)
High Output
16.0 kHz (Typ.)
Approx. 4 times of I
OP
Approx. 1/4 time of V
RI
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| SCI7654M0A | DC/DC Converter |
| SCI7660 | DC-DC Converter |
| SCI7661 | DC-DC Converter |
| SCI7661C | DC-DC Converter |
| SCI7661M | DC-DC Converter |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SCI7654M0A | 制造商:EPSON 制造商全稱:EPSON 功能描述:DC/DC Converter |
| SCI7660 | 制造商:EPSON 制造商全稱:EPSON 功能描述:DC-DC Converter |
| SCI7661 | 制造商:EPSON 制造商全稱:EPSON 功能描述:DC-DC Converter |
| SCI7661C | 制造商:EPSON 制造商全稱:EPSON 功能描述:DC-DC Converter |
| SCI7661M | 制造商:EPSON 制造商全稱:EPSON 功能描述:DC-DC Converter |
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