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YB1230 데이터시트 PDF




YOBON TECHNOLOGIES에서 제조한 전자 부품 YB1230은 전자 산업 및 응용 분야에서
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부품번호 YB1230 기능
기능 Low-Noise LDO Regulator
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YB1230 데이터시트, 핀배열, 회로
YB1230
600mA, Low-Noise LDO Regulator
„ Description
The YB1230 is a series of low-noise, low
dropout (LDO) linear regulators with 2.0%
output voltage accuracy. The YB1230
regulators achieve a low 500mV dropout at
600mA load current of 3.1V output and are
available in voltages ranging from 1.8V to
3.1 V with 0.1 V per step (custom voltage is
considerable at request).
The YB1230 regulators are optimized to
work with low-ESR and low cost ceramic
capacitors, reducing the amount of board
space critical in hand-held devices. The
YB1230 requires only 2.2μF output
capacitor for stability with any load and
consumes less than 1μA in shutdown
mode.
Built-in thermal shutdown and short-circuit
protect offer secure protection against fault
operation. The YB1230 regulators are
available in SOT-23 / SOT-25 / SOT-89
packages.
„ Features
„ 2.0% Accuracy Output Voltage
„ Output Voltage Range 1.8V ~ 3.1V
„ Low-Noise Low-Drop-Out
„ Stable with 2.2μF Ceramic Capacitor for
Any Load
„ Typical Output Current : 600mA
„ Low Quiescent Current : ~90μA
„ 500mV Dropout at 600mA Load (3.1V)
„ Only Need Input and Output Capacitors
„ Power Saving Shutdown Mode (<1μA)
„ Thermal Protection Shutdown
„ Built-In Internal Soft-Start
„ Output Short-Circuit Current Limit
Protection
„ Green package (RoHS) available
„ Applications
„ PDA, Palmtops and Notebook Computers
„ DSC, Handset Camera Modules
„ PCMCIA Cards, PC Cameras
„ USB Based Portable Devices (MP3, PMP)
„ GSM/GPRS/3G RF Transceiver Modules
„ Wireless LANs
„ Bluetooth Portable Radios
Typical Application Circuit
Figure 1-1: SOT-25 Application Circuit
Figure 1-2: SOT-23/SOT-89 Application Circuit
YB1230 Rev.1.6
www.yobon.com.tw
1




YB1230 pdf, 반도체, 판매, 대치품
YB1230
600mA, Low-Noise LDO Regulator
Electrical Characteristics
Table 2 VIN = ( VOUT + 1V ), CIN = COUT = 2.2μF, VEN = VIN, TA=25°C, unless otherwise noted.
Description
Symbol
Test Conditions
MIN TYP MAX Units
Input Voltage Range
Output Voltage
Output Voltage Accuracy
Output Current Limit
Dropout Voltage (Note 1)
Ground Current
Line Regulation
Load Regulation
Shutdown Supply Current
Ripple Rejection (PSRR)
Shutdown Exit Delay (Note 2)
EN Logic Low Level
EN Logic High Level
EN Input Bias Current
Thermal Shutdown
Thermal Hysteresis
VIN 2.0 5.5
VOUT Predefined
1.8 3.1
ΔVOUT IOUT = 10mA
-2.0 +2.0
ISC Short-Circuit Output
380
VOUT = 3.2V, IOUT = 600mA
500
VOUT = 3.0V, IOUT = 600mA
520
VDROP VOUT = 2.5V, IOUT = 600mA
600
VOUT = 2.0V, IOUT = 600mA
750
VOUT = 1.8V, IOUT = 600mA
850
IG Iground = IIN - IOUT
90 150
ΔVLINE VIN=(VOUT+1V) to 5.5V, IOUT=10mA
0.3
ΔVLOAD IOUT = 1mA to 600mA
2
ISD EN = 0V
1
f = 100Hz, IOUT = 10mA
56
PSRR f = 1KHz, IOUT = 10mA
56
f = 10KHz, IOUT = 10mA
45
VOUT = 2.8V, Rload = 9 ohm
40 100
VIL VIN = 2.0V to 5.5V
0.4
VIH VIN = 2.0V to 5.5V
1.5 VIN
IBEN VIN = EN = VOUT +1V
0.01
TSD Shutdown Temperature
160
THYS VOUT = 1.8V, IOUT = 100mA
20
V
V
%
mA
mV
μA
%/V
%
μA
dB
μs
V
V
μA
°C
°C
Note :
1. The drop out voltage varies depending on output voltage selection. Dropout is defined as VIN – VOUT when
VOUT is 100mV below nominal VOUT where VIN = VOUT + 1V for nominal VOUT.
2. Time needed for VOUT to reach 90% of final value.
YB1230 Rev.1.6
www.yobon.com.tw
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YB1230 전자부품, 판매, 대치품
Function Block
YB1230
600mA, Low-Noise LDO Regulator
IN
EN
GND
SHUTDOWN AND
POWER-ON CONTROL
THERMAL
SENSOR
ERROR
AMP
MOS DRIVER
WITH LIMIT
REFERENCE
AND NOISE BYPASS
Figure 3: Function Block
P
OUT
Functional Description
The YB1230 is an 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 600mA. As
shown in the Functional Block Diagram, the
YB1230 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 3.1V.
Stability
The YB1230 is a high performance LDO
emphasizing stability with low output
capacitance. It is able to maintain stability
with an output capacitor as low as 2.2μF.
The output capacitor can also be increased
to optimize performance. The YB1230 will
remain stable and in regulation with no load,
unlike many other voltage regulators.
Internal P-Channel Pass Transistor
The YB1230 features a low impedance
P-channel MOSFET pass transistor. This
provides several advantages over similar
designs using a PNP pass transistor,
YB1230 Rev.1.6
www.yobon.com.tw
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