1.5A Ultra Low Dropout Linear Regulator
FEATURES
Ultra Low Dropout Voltage
Low Ground Pin Current
Excellent Line and Load Regulation
Guaranteed Output Current of 1.5A
Available in SOT-223, MSOP8, SOP8, SOP8-PP,
TO-263, and TO-220 Packages
Fixed Output Voltages : 1.2V, 1.8V, 2.5V, 3.3V, and 5.0V
SENSE Option Improves Load Regulation
Over-Temperature/Over-Current Protection
℃
℃
TJ3965
SOT-223 3L / 5LPKG
MSOP8 / SOP8 / SOP8-PP
TO-263 3L / 5LPKG
-40
to 125
Junction Temperature Range
TO-220 3L / 5L PKG
APPLICATION
Battery Powered Equipments
Motherboards and Graphic Cards
Microprocessor Power Supplies
Peripheral Cards
High Efficiency Linear Regulators
Battery Chargers
ORDERING INFORMATION
Device (Marking)
3965S-ADJ
3965S-X.X
TJ3965MD-ADJ
TJ3965MD-X.X
TJ3965D-ADJ
TJ3965D-X.X
TJ3965DP-ADJ
TJ3965DP-X.X
TJ3965R-ADJ
TJ3965R-X.X
TJ3965T-ADJ
TJ3965T-X.X
Package
SOT-223 3L/5L
MSOP8
SOP8
SOP8-PP
TO-263 3L/5L
TO-220 3L/5L
DESCRIPSION
The TJ3965 series of high performance ultra low-dropout
linear regulators operates from 2.5V to 6V input supply
and provides ultra low-dropout voltage, high output
current with low ground current. Wide range of preset
output voltage options are available. These ultra low
dropout linear regulators respond fast to step changes in
load which makes them suitable for low voltage
µprocessor applications. The TJ3965 is developed on a
CMOS process technology which allows low quiescent
X.X = Output Voltage = 1.2, 1.8, 2.5, 3.3, and 5.0
current operation independent of output load current. This CMOS process also allows the TJ3965 to operate
under extremely low dropout conditions.
Absolute Maximum Ratings
CHARACTERISTIC
Input Supply Voltage (Survival)
Enable Input Voltage (Survival)
Maximum Output Current
Lead Temperature (Soldering, 5 sec)
Storage Temperature Range
Operating Junction Temperature Range
SYMBOL
V
IN
V
EN
I
MAX
T
SOL
T
STG
T
JOPR
MIN.
-
-
-
-65
-40
MAX.
6.5
6.5
1.5
260
150
125
UNIT
V
V
A
Oct. 2006 – R1.2.1
1/9
HTC
℃
℃
℃
1.5A Ultra Low Dropout Linear Regulator
TYPICAL APPLICATION
Typical 3 Pin Application
V
IN
TJ3965
GND
C
OUT
33 F
V
OUT
TJ3965
INPUT
C
IN
68 F
OUTPUT
+
Typical 5 / 8 Pin Application
V
IN
TJ3965
EN
EN
GND
SENSE
C
OUT
33 F
V
OUT
+
INPUT
C
IN
5 / 8 Pin Remote Load Sense Application
INPUT
OUTPUT
V
IN
TJ3965
EN
EN
GND
V
OUT
Typical Adjustable Version Application
V
IN
TJ3965
EN
EN
GND
R
1
ADJ
V
OUT
+
INPUT
C
IN
R
2
* TJ3965 can deliver a continuous current of 1.5A over the full operating temperature. However, the output
current is limited by the restriction of power dissipation which differs from packages. A heat sink may be
required depending on the maximum power dissipation and maximum ambient temperature of application.
With respect to the applied package, the maximum output current of 1.5A may be still undeliverable.
* See Application Information
Oct. 2006 – R1.2.1
5/9
μ
-
68 F
μ
-
68 F
SENSE
+
C
IN
C
OUT
33 F
μ
68 F
μ
-
-
- μ
+
OUTPUT
- μ
+
- μ
+
- μ
+
L
O
A
D
OUTPUT
C
OUT
33 F
HTC
PCB Design
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