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LA1117 데이터시트 PDF




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부품번호 LA1117 기능
기능 1.0A Low Dropout Positive Regulators
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LA1117 데이터시트, 핀배열, 회로
LA1117
1.0A Low Dropout Positive Regulators
General Description
The LA1117 is a low dropout three terminal regulator that features a low quiescent current, low input, output
and dropout voltages, as well as over temperature shutdown. The output voltage of the LA1117 is set at the
factory and trimmed to ±1%. The LA1117 is stable with a ceramic output capacitor of 4.7uF.
This family of regulators can provide either a stand-alone power supply solution or act as a post regulator for
switch mode power supplies. They are particularly well suited for applications requiring low input and output
voltage.
Features
Min. 1.1A Output Current Limiter
1.4V Maximum Full load Dropout Voltage
3-Terminal Adjustable or Fixed , 1.5V, 1.8V, 2.5V, 3.3V and 5V Output Voltage
Fast Load Transient Response
Built-in Over Current Protection
Built-in Over Temperature Protection
Good Noise Rejection Capability
Stable with Ceramic Cap of 4.7uF
Package : SOT223-3L, SOT89-3L, TO252-2L
RoHS Compliant & Halogen Free
Applications
PC Mother Board Applications
LCD TV/ Monitors
Communication Devices
Please be aware that an Important Notice concerning availability, disclaimers, and use in critical
applications of LSC products is at the end of this document.
LA1117 Rev. 04
1 of 17
www.liteonsemi.com
2015/2/4




LA1117 pdf, 반도체, 판매, 대치품
Pin Assignment
SOT223-3L
(Top View)
LA1117AADB
1. ADJ/GND
2. VOUT
3. VIN
Tab Is Connected to Pin2
SOT89-3L
(Top View)
LA1117AATB
1. ADJ/GND
2. VOUT
3. VIN
Tab Is Connected to Pin2
LA1117
1.0A Low Dropout Positive Regulators
TO252-2L
(Top View)
Tab Is Connected to Pin2
LA1117AACA
1. ADJ/GND
2. VOUT
3. VIN
SOT89-3L
(Top View)
VIN
VOUT
ADJ/GND
Tab Is Connected to Pin2
LA1117BATB
1. ADJ/GND
2. VIN
3. VOUT
Figure 2. Pin Assignments
Pin Descriptions
Pin Name
ADJ/GND
VOUT
VIN
Pin Description
Vout Adjusting Pin or Ground Pin
Voltage Output
Voltage Input
LA1117 Rev. 04
4 of 17
www.liteonsemi.com
2015/2/4

4페이지










LA1117 전자부품, 판매, 대치품
LA1117
1.0A Low Dropout Positive Regulators
Electrical Characteristics (Contd.)
TA=25°C, CIN=COUT=4.7µF ceramic capacitance, unless otherwise specified.
Parameter
Ripple Rejection
(Note 4)
RMS Output Noise
(% of VOUT)
(Note 4)
VOUT Temperature
Coefficient
(Note 4)
Thermal Shutdown
(Note 4)
Symbol
PSRR
Conditions
VIN =5V, VOUT =1.25V, IOUT =0.01A,
120 Hz sine wave,
COUT=4.7uF ceramic Cap.
eN 10Hz f 10 kHz
TC TA = 25°C, 30ms Pulse
TSD
Min Typ Max Units
70 dB
0.003
%
100 ppm/°C
150 °C
Thermal Shutdown
Hysteresis
TSD(Hys)
25 °C
Note 3 : Line and load regulation are measured by low duty cycle pulse testing and the junction temperature is kept at 25 degree C. The
VOUT of load regulation is measured at the out lead.
Note 4 : Guarantee by design. Not 100% tested in manufacturing.
LA1117 Rev. 04
7 of 17
www.liteonsemi.com
2015/2/4

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