参数资料
型号: YB1210ST8RS-2.6G
厂商: YOBON TECHNOLOGIES, INC.
英文描述: 300mA Ultra-Low-Noise, High PSRR LDO Regulator
中文描述: 300mA的超低噪声,高PSRR LDO稳压器
文件页数: 11/12页
文件大小: 456K
代理商: YB1210ST8RS-2.6G
YB1210 – 300mA
Ultra-Low-Noise, High PSRR LDO Regulator
YB1210 MRev.1.5
www.yobon.com.tw
8
SHUTDOWN AND
POWER-ON CONTROL
THERMAL
SENSOR
ERROR
AMP
REFERENCE
AND NOISE BYPASS
MOS DRIVER
WITH LIMIT
IN
GND
EN
OUT
P
Figure 3. Block Diagram
Functional Block Diagram
Functional Description
The
YB1210
is
an
ultra-low-noise,
low-quiescent current, low-dropout linear
regulator. It is supplied in a SOT-23 /
SOT-25 / SOT-89 package for different
applications. These devices can supply
loads up to 250mA. As shown in the
Functional Block Diagram, the YB1210
consists of a reference and noise bypass
circuit,
error
amplifier,
output
drive
transistor, internal feedback voltage divider,
thermal sensor, and short circuit current
limiter. 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
pass-transistor gate is pulled low. This
allows more current to pass to the output
and increases the output voltage. If the
feedback voltage is too high, the pass
transistor gate is pulled high, allowing less
current to pass to the output. The parts are
available with preset output voltages
ranging from 1.8V to 3.3V.
Stability
The YB1210 is a high performance LDO
emphasizing stability with low output
capacitance. It is able to maintain stability
with an output capacitor as low as 0.47uF.
The output capacitor can also be increased
to optimize performance. The YB1210 will
remain stable and in regulation with no load,
unlike many other voltage regulators.
Internal P-Channel Pass Transistor
The YB1210 features a low impedance
P-channel MOSFET pass transistor. This
provides several advantages over similar
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