CYStech Electronics Corp.
1A Low Dropout Positive Voltage Regulator
LM1117E3 Series
Spec. No. : C506E3 Issued Date : 20...
CYStech Electronics Corp.
1A Low Dropout Positive Voltage
Regulator
LM1117E3 Series
Spec. No. : C506E3 Issued Date : 2014.05.07 Revised Date : 2015.05.13 Page No. : 1/7
Features
Description
●Adjustable or Fixed Output
The LM1117 series of positive adjustable and fixed
●Output Current of 1A
regulators are designed to provide 1A with high
●Low Dropout, 1.4V max at 1A Output Current efficiency. All internal circuitry is designed to
●Good Noise Rejection
operate down to 1.4V input to output differential.
●Output Current Limiting ●Built-in Thermal Shutdown
The product is specifically designed to provide wellregulated supply for low-voltage IC application such
●Fast Transient Response
as high-speed bus termination and low current 3.3V
●Can operate using MLCCs in the capacitance range logic supply, and other applications such as VGA cards.
of 2μF to 10μF
Applications
● High Efficiency Linear
Regulators ● Post
Regulators for Switching Supplies ● Adjustable Power Supply
Typical Application Data
Fixed Voltage
Regulator
VIN>4.75V
3
+ C1 C101μF 10μF, T an.
IN
T AB
GND 1
Not es: 1)C1 needed if device is far from filter capacitors 2)C2 minimum value requir ed for stability
Adjustable Voltage
Regulator
OUT 2
VOUT=3.3V
+ C2 1100μFF, T an. Min
VIN>4.75V
3 IN
+ CC11 1100μμFF, T an.
T AB
ADJ 1
OUT 2
VOUT =VREF×(1+R2/R1)+IADJ×R2 Not es: 1)C1 needed if device is far from filter capacitors 2)C2 minimum value requir ed for stability
LM1117E3 series
VOUT=3.45V
R1 133...