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參數(shù)資料
| 型號： | AP2201K2.6TR |
| 廠商： | BCD Semiconductor Manufacturing Limited |
| 英文描述： | 150mA RF ULDO REGULATOR |
| 中文描述： | 150mA的射頻ULDO調(diào)節(jié)器 |
| 文件頁數(shù)： | 10/12頁 |
| 文件大?。?/td> | 157K |
| 代理商： | AP2201K2.6TR |
150mA RF ULDO REGULATOR AP2201
Preliminary Datasheet
10
Jun. 2005 Rev. 1. 0
BCD Semiconductor Manufacturing Limited
Application Information
External Capacitors
The AP2201 requires external capacitors for regula-
tor stability. These capacitors must be correctly
selected for good performance.
Input Capacitor
If there is more than 10 inches of wire between the
input and the AC filter or if a battery is used as the
input, at least a 1
μ
F capacitor should be placed from
IN to GND.
Output Capacitor
It is required to prevent oscillation. 1.0
μ
F minimum
is recommended when C
BYP
is not used. 2.2
μ
F mini-
mum is recommended when C
BYP
is 470pF. The out-
put capacitor may be increased without limit for large
values to improve transient response.
The output capacitor should have an ESR of about
5
or less. In most cases, tantalum or aluminium
electrolytic capacitors are adequate.
Noise Bypass Capacitor
Bypass capacitor is connected to the internal voltage
reference. A 680pF capacitor connected from BYP to
GND make this reference quiet, resulting in a
significant reduction in output noise. When using
C
BYP
, output capacitors of 2.2
μ
F or greater are
required for better stability.
The start-up speed of the AP2201 is inversely
proportional to the value of reference bypass
capacitor. In some cases if output noise is not a major
concern and rapid turn-on is necessary, omit C
BYP
and leave BYP open.
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| AP2201K3.0TR | 制造商:BCDSEMI 制造商全稱:BCD Semiconductor Manufacturing Limited 功能描述:150mA RF ULDO REGULATOR |
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| AP2202K-2.5TR | 制造商:BCDSEMI 制造商全稱:BCD Semiconductor Manufacturing Limited 功能描述:150mA RF ULDO REGULATOR |
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