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參數(shù)資料
| 型號(hào)： | AIC1638-30CX |
| 廠商： | Analog Integrations Corporation |
| 英文描述： | 3-PIN ONE-CELL STEP-UP DC/DC CONVERTER |
| 中文描述： | 3引腳單細(xì)胞升壓型DC / DC變換器 |
| 文件頁(yè)數(shù)： | 14/15頁(yè) |
| 文件大小： | 240K |
| 代理商： | AIC1638-30CX |
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AIC1638
3-PIN ONE-CELL STEP-UP DC/DC CONVERTER
SPEC NO: DS-1638-00 03/01/00
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
14
Table 1 Indicates resistance and height for each coil.
Power Inductor Type
Inductance
(
μ
H )
Resistance
(
)
Rated Current
(A)
Height
(mm)
22
0.10
0.7
47
0.18
0.5
DS1608
100
0.38
0.3
2.9
22
0.08
2.7
Coilcraft SMT Type
(www.coilcraft.com)
DO3316
47
0.14
1.8
5.2
47
0.25
0.7
Sumida SMT Type CD54
100
0.50
0.5
4.5
47
0.25
0.7
Hold SMT Type PM54
100
0.50
0.5
4.5
Hold SMT Type PM75
33
0.11
1.2
5.0
CAPACITOR SELECTION
A poor choice for a output capacitor can result in
poor efficiency and high output ripple. Ordinary
aluminum electrolytic, while inexpensive may have
unacceptably poor ESR and ESL. There are low
ESR aluminum capacitors for switch mode DC-DC
converters which work much better than general
propose unit. Tantalum capacitors provide still better
performance
at
more
expensive.
OS-CON
capacitors have extremely low ESR in a small size.
If capacitance is reduced, output ripple will increase.
Most of the input supply is supplied by the input
bypass capacitor, the capacitor voltage rating
should be at least 1.25 times greater than a
maximum input voltage.
DIODE SELECTION
Speed, forward drop, and leakage current are the
three main consideration in selecting a rectifier
diode. Best performance is obtained with Schottky
rectifier diode such 1N5819. Motorola makes
MBR0530 in surface mount. For lower output power
a 1N4148 can be used although efficiency and
start-up voltage will suffer substantially.
COMPONENT POWER DISSIPATION
Operating in discontinuous mode, power loss in the
winding resistance of inductor can be approximate
equal to
(
)
(
)
OUT
OUT
V
D
OUT
ON
L
L
P
V
V
Rs
T
3
2
PD
+
=
where P
OUT
=V
OUT
* I
OUT
; Rs=Inductor DC R;
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| AIC1638-30CZ | 制造商:AIC 制造商全稱:Analog Intergrations Corporation 功能描述:3-PIN ONE-CELL STEP-UP DC/DC CONVERTER |
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| AIC1638-50CX | 制造商:AIC 制造商全稱:Analog Intergrations Corporation 功能描述:3-PIN ONE-CELL STEP-UP DC/DC CONVERTER |
| AIC1638-50CZ | 制造商:AIC 制造商全稱:Analog Intergrations Corporation 功能描述:3-PIN ONE-CELL STEP-UP DC/DC CONVERTER |
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