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參數(shù)資料
| 型號： | YB1220ST26TBB |
| 廠商： | YOBON TECHNOLOGIES, INC. |
| 元件分類： | 線性穩(wěn)壓 |
| 英文描述： | Dual Channel 200mA LDO Regulator |
| 中文描述： | 雙通道200mA的LDO穩(wěn)壓器 |
| 文件頁數(shù)： | 7/9頁 |
| 文件大?。?/td> | 508K |
| 代理商： | YB1220ST26TBB |
YB1220
Dual Channel 200mA LDO Regulator
YB1220 MRev.1.1
www.yobon.com.tw
7
Functional Block Diagram
Functional Description
The YB1220 consists of two low-noise,
low-quiescent current, low-dropout linear
regulators and is supplied in a small
SOT-26 package suitable for portable and
battery-powered
applications.
Each
channel can independently supply loads up
to 200mA (typical operation, not maximum)
and output voltages are preset and ranging
from 1.2V to 3.6V.
As shown in the Functional Block Diagram,
the YB1220 consists of a single reference
generating circuit, two error amplifiers, two
P-channel pass transistors, independent
internal feedback voltage dividers, two
short circuit current limiters and one
thermal shutdown protection circuit.
The internal reference is connected to the
error amplifier’s inverting input. The error
amplifier compares this reference with the
feedback
voltage
and
amplifies
the
difference. If the feedback voltage is lower
than the reference voltage, the gate of
pass-transistor is pulled low, allowing more
current to pass to the output and increasing
the output voltage. If the feedback voltage
is too high, the gate of pass transistor is
pulled high, resulting in less current to the
output.
Stability
The YB1220 is a high performance LDO
emphasizing stability with low output
capacitance. It is able to maintain stability
with an output capacitor as low as 1.0uF.
The output capacitor can also be increased
to optimize performance. The YB1220 will
remain stable and in regulation with no load,
unlike many other voltage regulators.
Internal P-Channel Pass Transistor
The YB1220 features a low impedance
相關PDF資料 |
PDF描述 |
|---|---|
| YB1220ST26TBY | Dual Channel 200mA LDO Regulator |
| YB1220ST26TB | Dual Channel 200mA LDO Regulator |
| YB1220ST26TYA | Dual Channel 200mA LDO Regulator |
| YB1220ST26TYB | Dual Channel 200mA LDO Regulator |
| YB1220ST26TYY | Dual Channel 200mA LDO Regulator |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| YB1220ST26TBY | 制造商:YOBON 制造商全稱:YOBON 功能描述:Dual Channel 200mA LDO Regulator |
| YB1220ST26TY | 制造商:YOBON 制造商全稱:YOBON 功能描述:Dual Channel 200mA LDO Regulator |
| YB1220ST26TYA | 制造商:YOBON 制造商全稱:YOBON 功能描述:Dual Channel 200mA LDO Regulator |
| YB1220ST26TYB | 制造商:YOBON 制造商全稱:YOBON 功能描述:Dual Channel 200mA LDO Regulator |
| YB1220ST26TYY | 制造商:YOBON 制造商全稱:YOBON 功能描述:Dual Channel 200mA LDO Regulator |
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