UNISONIC TECHNOLOGIES CO., LTD
LR3966
LINEAR INTEGRATED CIRCUIT
3.0A LOW DROPOUT LINEAR
REGULATOR
1
1
TO-263
TO-263-5
DESCRIPTION
The LR3966 is a low-noise, low-dropout linear regulator
operated from a 2.5V to 6V input voltage and is guaranteed to
deliver 3A output current. Wide range of preset output voltage
options are available. Built-in low on-resistance transistor provides
low dropout voltage and large output current. The LR3966 is
designed and optimized for battery-powered systems to work with
low noise.
1
1
TO-252-5
SOT-223
The LR3966 is developed on a CMOS process technology
which allows low quiescent current operation independent of output
load current. This CMOS process also allows the LR3966 to operate
under extremely low dropout conditions.
FEATURES
* 3A Guaranteed Output Current
* Ultra Low Dropout Voltage
* Low Ground Pin Current
* Low Temperature Coefficient
* Current Limiting Protection
* Thermal Shutdown Protection
* Excellent Line/Load Transient
* SENSE Option Improves Load Regulation
ORDERING INFORMATION
Ordering Number
Pin Assignment
Package
Packing
Lead Free
-
Halogen Free
1
G
I
2
O
G
O
O
G
G
I
3
I
4
-
5
-
LR3966G-xx-AA3-A-R
LR3966G-xx-AA3-D-R
LR3966G-xx-TQ2-A-T
LR3966G-xx-TQ2-A-R
LR3966G-xx-TQ2-D-T
LR3966G-xx-TQ2-D-R
LR3966G-xx-TN5-T
LR3966G-xx-TN5-R
LR3966G-xx-TQ5-T
LR3966G-xx-TQ5-R
SOT-223
SOT-223
TO-263
Tape Reel
Tape Reel
Tube
-
O
I
-
-
LR3966L-xx-TQ2-A-T
LR3966L-xx-TQ2-A-R
LR3966L-xx-TQ2-D-T
LR3966L-xx-TQ2-D-R
LR3966L-xx-TN5-T
LR3966L-xx-TN5-R
LR3966L-xx-TQ5-T
LR3966L-xx-TQ5-R
Note: Pin Assignment: G: GND
G
G
I
-
-
TO-263
I
-
-
Tape Reel
Tube
TO-263
O
O
G
G
G
G
-
-
TO-263
I
-
-
Tape Reel
Tube
TO-252-5
TO-252-5
TO-263-5
TO-263-5
E
E
E
E
O
O
O
O
A
A
A
A
I
Tape Reel
Tube
I
I
Tape Reel
I: VIN
O: VOUT E: EN
A: SENSE/ADJ
LR3966G-xx-AA3-A-R
(1) T: Tube, R: Tape Reel
(2) refer to Pin Assignment
(1)Packing Type
(2)Pin Assignment
(3)Package Type
(4)Output Voltage Code
(5)Green Package
(3) AA3: SOT-223, TN5: TO-252-5, TQ2: TO-263,
(3) TQ5-TO-263-5
(4) xx: refer to Marking Information
(5) L: Lead Free, G: Halogen Free and Lead Free
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