LM1117-1.5L3 Datasheet, PDF (1/8 Pages) Cystech Electonics Corp. – 1A Low Dropout Positive Voltage Regulator

CYStech Electronics Corp.
1A Low Dropout Positive Voltage Regulator
LM1117L3 series
Spec. No. : C506L3
Issued Date : 2003.03.22
Revised Date :2013.06.19
Page No. : 1/8
Features
●Adjustable or Fixed Output
●Output Current of 1A
●Low Dropout, 1.4V max at 1A Output Current
●Good Noise Rejection
●Output Current Limiting
●Built-in Thermal Shutdown
●Fast Transient Response
●Pb-free lead plating package
●Can operate using MLCCs in the capacitance range
of 2μF to 10μF
Applications
● High Efficiency Linear Regulators
● Post Regulators for Switching Supplies
● Adjustable Power Supply
Description
The LM1117 series of positive adjustable and fixed
regulators are designed to provide 1A with high
efficiency. All internal circuitry is designed to
operate down to 1.4V input to output differential.
The product is specifically designed to provide well-
regulated supply for low-voltage IC application such
as high-speed bus termination and low current 3.3V
logic supply, and other applications such as VGA cards.
Typical Application Data
Fixed Voltage Regulator
VIN>4.75V
3
IN
+
C1
10μF, Tan.
TAB
GND
1
OUT ²
Notes:
1)C1 needed if device is far from filter capacitors
2)C2 minimum value required for stability
Adjustable Voltage Regulator
VOUT=3.3V
+ _C2
10μF, Tan. Min
VIN>4.75V
3
IN
+ _C1
10μF, Tan.
TAB
OUT ²
ADJ
1
VOUT=VREF×(1+R2/R1)+IADJ×R2
Notes:
1)C1 needed if device is far from filter capacitors
2)C2 minimum value required for stability
LM1117L3 series
VOUT=3.45V
R1
133Ω,1%
R2
232Ω, 1%
+ C2
10μF, Tan. Min
CYStek Product Specification