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LC1761 の電気的特性と機能

LC1761のメーカーはLEADCHIPです、この部品の機能は「Dual 300mA High PSRR Linear Regulator」です。


製品の詳細 ( Datasheet PDF )

部品番号 LC1761
部品説明 Dual 300mA High PSRR Linear Regulator
メーカ LEADCHIP
ロゴ LEADCHIP ロゴ 




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LC1761 Datasheet, LC1761 PDF,ピン配置, 機能
LC1761
REV1.2-Revised July 2012
Dual 300mA High PSRR Linear Regulator
DESCRIPTION
LC1761 dual, low-noise, low-dropout regulator
delivers at least 300mA of continuous output
current. The output voltage for each regulator is
set independently by trimming. Output voltages
are selectable in 100mV steps within a range of
1.2V to 3.5V.Typical output noise is 47uVrms, and
PSRR is 73dB at 100Hz. The LC1761 includes two
independent logic-controlled shutdown inputs and
allows the output of each regulator to be turned
of independently.
LC1761 includes high accuracy voltage reference,
error amplifier, current limit circuit and output
driver module.
FEATURES
Two low dropout voltage regulators
300mA output current for each LDO
25uA operating supply current per LDO
Low 47uVRMS output noise
Standby Mode: 0.1uA
Low 160mV dropout at 300mA load
73dB PSRR at 100Hz
Excellent Line regulation: 0.05%/V
Independent Shutdown controls
1.2V to 3.5V Factory-Preset Output
Output Current Limit
Highly Accurate: ±2% (±1% customized)
APPLICATIONS
LC1761 has excellent load and line transient
response and good temperature characteristics,
which can assure the stability of chip and power
system. And it uses trimming technique to
guarantee output voltage accuracy within±2%.
LC1761 is available in SOT-23-6 package which is
lead(Pb)-free
Cellular phones
Cordless phones and radio communication
equipment
Battery Powered equipment
Notebook and hand-hold equipment
Wireless LAN
GPS receivers
TYPICAL APPLICATION
NOTE:
Input capacitor (Cin=1uF) and Output capacitor
(Cout=1uF/3.3uF) are recommended in all application
circuit.
ELECTRICAL CHARACTERISTICS
80
70
60
50
40
30
20
10
0
0.01
PSRR
Vout=3.3V
0.1 1 10
Freq(KHz)
100 1000
www.leadchip.com
1 Your final power solution

1 Page





LC1761 pdf, ピン配列
LC1761
ELECTRICAL CHARACTERISTICS
Test Conditions: Cin=1uF,Cout=3.3uF,TA=25°C, unless otherwise specified.
LC1761, For Arbitrary Output Voltage
Symbol
Parameter
Vin Input Voltage
Vout Output Voltage
Iout (Max.)
Vdrop
Vout
Vin Vout
Vout / Iout
Iss
Maximun Output Current
Dropout
Voltage,Vout≥2.8V
Line Regulation
Load Regulation
Supply Current
Istandby
Supply Current (Standby)
Vout
T Vout
PSRR
Output Voltage
Temperature Coefficiency
Ripple Rejection
Ilim
Vceh
Vcel
en
Short Current Limit
CE Input Voltage “H”
CE Input Voltage “L”
Output Noise
Conditions
Vin=Set Vout+1V
1mA≤Iout≤30mA
Vin-Vout=1V
Iout=100mA
Iout=300mA
Iout=40mA
2.8V≤Vin≤6V
Vin=Set Vout+1V
1mA≤Iout≤300mA
Vin=Set Vout+1V
Vin=Set Vout+1V
Vce=GND
Iout=30mA
F=100Hz, Ripple=0.5Vp-p
Vin=Set Vout+1V
Vout = 0V
BW=10Hz~100kHz
Min
Vout
x0.98
300
1.5
0
Typ
Vout1
50
160
0.05
30
50
0.1
±100
70
500
47
Max
6
Vout
X1.02
80
220
0.2
50
100
1.0
Vin
0.25
Units
V
V
mA
mV
mV
%/V
mV
uA
uA
ppm/°C
dB
mA
V
V
uVrms
www.leadchip.com
3 Your final power solution


3Pages


LC1761 電子部品, 半導体
5) Line transient response
Cin=Cout=1uF Iout=25mA vout=3.3V
Vin 4V
5V
Vout
6) Load transient response
Cin=Cout=1uF Vin=4.5v Vout=3.3V
50mA
1mA Output Current
Output Voltage
LC1761
5V
Vin
Vout
4V
50mA
1mA Output Current
Output Voltage
7) Start up from EN
Output
EN
8) Shut down from EN
Output
EN
www.leadchip.com
6 Your final power solution

6 Page



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部品番号部品説明メーカ
LC1761

Dual 300mA High PSRR Linear Regulator

LEADCHIP
LEADCHIP


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