3A Ultra Low Dropout Linear Regulator
FEATURES
•
•
•
•
•
•
•
•
•
Ultra Low Dropout Voltage
Compatible with low ESR MLCC as Input/Output Capacitor
Good Line and Load Regulation
Guaranteed Output Current of 3A
Available in SOP8-PP, TO-252 and TO-263
Packages
Fixed Output Voltages : 1.0V, 1.2V, 1.8V, 2.5V, and 3.3V
SENSE Option Improves Load Regulation
Over-Temperature/Over-Current Protection
-40
ºC
to 125
ºC
Junction Temperature Range
SOP8-PP
TJ4230
TO-252 3L / 5L PKG
TO-263 3L / 5L PKG
APPLICATION
•
•
•
•
•
•
•
LCD TVs and SETTOP Boxes
Battery Powered Equipments
Motherboards and Graphic Cards
Microprocessor Power Supplies
Peripheral Cards
High Efficiency Linear Regulators
Battery Chargers
ORDERING INFORMATION
Device
TJ4230GDP-ADJ
TJ4230GDP-X.X
TJ4230GRS-ADJ
TJ4230GRS-X.X
TJ4230GR-ADJ
TJ4230GR-X.X
Package
SOP8-PP
DESCRIPTION
The TJ4230 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 micro-processor
applications. The TJ4230 is developed on a CMOS process
technology which allows low quiescent current operation
independent of output load current. This CMOS process
also allows the TJ4230 to operate under extremely low
dropout conditions.
TO-252 3L/5L
TO-263 3L/5L
X.X = Output Voltage = 1.0, 1.2, 1.8, 2.5, and 3.3
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
Package Thermal Resistance *
SYMBOL
V
IN
V
EN
I
MAX
T
SOL
T
STG
T
JOPR
MIN.
-
-
-
-65
-40
68
MAX.
6.5
6.5
3
260
150
125
UNIT
V
V
A
ºC
ºC
ºC
ºC/W
Θ
JA-SOP8-PP
* Calculated from package in still air, mounted to 2.6mm X 3.5mm(minimum foot print) 2 layer PCB without thermal vias per JESD51 standards.
Apr. 2011 – Rev. 1. 0
1/9
HTC
3A Ultra Low Dropout Linear Regulator
Ordering Information
V
OUT
ADJ
Package
SOP8-PP
TO-252 5L
TO-263 5L
SOP8-PP
TO-252 3L
1.0V
TO-252 5L
TO-263 3L
TO-263 5L
SOP8-PP
TO-252 3L
1.2V
TO-252 5L
TO-263 3L
TO-263 5L
SOP8-PP
TO-252 3L
1.8V
TO-252 5L
TO-263 3L
TO-263 5L
SOP8-PP
TO-252 3L
2.5V
TO-252 5L
TO-263 3L
TO-263 5L
SOP8-PP
TO-252 3L
3.3V
TO-252 5L
TO-263 3L
TO-263 5L
Order No.
TJ4230GDP-ADJ
TJ4230GRS-ADJ-5L
TJ4230GR-ADJ-5L
TJ4230GDP-1.0V
TJ4230GRS-1.0V-3L
TJ4230GRS-1.0V-5L
TJ4230GR-1.0V-3L
TJ4230GR-1.0V-5L
TJ4230GDP-1.2
TJ4230GRS-1.2V-3L
TJ4230GRS-1.2V-5L
TJ4230GR-1.2V-3L
TJ4230GR-1.2V-5L
TJ4230GDP-1.8V
TJ4230GRS-1.8V-3L
TJ4230GRS-1.8V-5L
TJ4230GR-1.8V-3L
TJ4230GR-1.8V-5L
TJ4230GDP-2.5V
TJ4230GRS-2.5V-3L
TJ4230GRS-2.5V-5L
TJ4230GR-2.5V-3L
TJ4230GR-2.5V-5L
TJ4230GDP-3.3V
TJ4230GRS-3.3V-3L
TJ4230GRS-3.3V-5L
TJ4230GR-3.3V-3L
TJ4230GR-3.3V-5L
Description
3A, Adjustable, Enable
3A, Adjustable, Enable
3A, Adjustable, Enable
3A, Enable, SENSE
3A
3A, Enable, SENSE
3A
3A, Enable, SENSE
3A, Enable, SENSE
3A
3A, Enable, SENSE
3A
3A, Enable, SENSE
3A, Enable, SENSE
3A
3A, Enable, SENSE
3A
3A, Enable, SENSE
3A, Enable, SENSE
3A
3A, Enable, SENSE
3A
3A, Enable, SENSE
3A, Enable, SENSE
3A
3A, Enable, SENSE
3A
3A, Enable, SENSE
Package Marking
TJ4230G-ADJ
TJ4230G-ADJ
TJ4230G-ADJ
TJ4230G-1.0
TJ4230G-1.0
TJ4230G-1.0
TJ4230G-1.0
TJ4230G-1.0
TJ4230G-1.2
TJ4230G-1.2
TJ4230G-1.2
TJ4230G-1.2
TJ4230G-1.2
TJ4230G-1.8
TJ4230G-1.8
TJ4230G-1.8
TJ4230G-1.8
TJ4230G-1.8
TJ4230G-2.5
TJ4230G-2.5
TJ4230G-2.5
TJ4230G-2.5
TJ4230G-2.5
TJ4230G-3.3
TJ4230G-3.3
TJ4230G-3.3
TJ4230G-3.3
TJ4230G-3.3
TJ4230
Status
Contact Us
Contact Us
Contact Us
Contact Us
Contact Us
Contact Us
Contact Us
Contact Us
Contact Us
Contact Us
Contact Us
Contact Us
Contact Us
Contact Us
Contact Us
Contact Us
Contact Us
Contact Us
Contact Us
Contact Us
Contact Us
Contact Us
Contact Us
Contact Us
Contact Us
Contact Us
Contact Us
Contact Us
TJ4230GRS–ADJ–5L
Lead Count : 3L / 5L (Applied for TO252 and TO263 only)
Output Voltage : ADJ / 1.0V / 1.2V / 1.8V / 2.5V / 3.3V
Package Type
DP : SOP8-PP
RS : TO252
R : TO263
Material Class
Root Name
Product Code
Apr. 2011 – Rev. 1. 0
: Halogen Free
G
Blank : Pb Free
2/9
HTC
3A Ultra Low Dropout Linear Regulator
PIN CONFIGURATION
N.C 1
EN 2
VIN 3
N.C 4
Exposed
PAD
TJ4230
8 GND
7 ADJ / SENSE
6 VOUT
5 N.C
SOP8-PP
TO252-3L
TO252-5L
TO263-3L
TO263-5L
PIN DESCRIPTION
Pin No.
1
2
3
4
5
6
7
8
TO252/TO263 3 LEAD
Name
V
IN
GND
V
OUT
-
-
-
-
-
Function
Input Supply
Ground
Output Voltage
-
-
-
-
-
TO252/TO263 5 LEAD
Name
EN
V
IN
GND
V
OUT
SENSE/ADJ
-
-
-
Function
Chip Enable
Input Supply
Ground
Output Voltage
Remote Sense
or Output Adjust
-
-
-
Name
-
EN
V
IN
-
-
V
OUT
SENSE/ADJ
GND
SOP8-PP
Function
N.C.
Chip Enable
Input Supply
N.C.
N.C.
Output Voltage
Remote Sense
or Output Adjust
Ground
*
Exposed Pad of SOP8-PP package should be externally connected to GND.
Apr. 2011 – Rev. 1. 0
3/9
HTC
3A Ultra Low Dropout Linear Regulator
BASIC APPLICATION
Typical 3 Pin Application
VIN
C
IN
10uF
V
IN
V
OUT
VOUT
C
OUT
10uF
TJ4230
TJ4230
GND
Typical 5 / 8 Pin Application
VIN
C
IN
10uF
V
IN
V
OUT
VOUT
C
OUT
10uF
TJ4230
EN
EN
GND
SENSE
5 / 8 Pin Remote Load Sense Application
VIN
C
IN
10uF
V
IN
V
OUT
VOUT
L
O
A
D
TJ4230
EN
EN
GND
SENSE
C
OUT
10uF
Typical Adjustable Version Application
VIN
C
IN
10uF
V
IN
V
OUT
VOUT
C
ff
ADJ
R1
R2
C
OUT
10uF
TJ4230
EN
EN
GND
* TJ4230 can deliver a continuous current of 3A 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 3A may be still undeliverable.
* See Application Information.
Apr. 2011 – Rev. 1. 0
4/9
HTC
3A Ultra Low Dropout Linear Regulator
ELECTRICAL CHARACTERISTICS
(Note 1)
TJ4230
Limits in standard typeface are for TJ=25ºC, and limits in
boldface type
apply over the
full operating temperature range.
Unless otherwise specified: V
IN(Note 2)
= V
O(NOM)
+ 1 V, I
L
= 10 mA, C
IN
= 10 uF, C
OUT
= 10 uF, V
EN
= V
IN
- 0.3 V
PARAMETER
Output Voltage Tolerance
Adjustable Pin Voltage
(ADJ version)
Line Regulation
(Note 3)
Load Regulation
(Note 3, 4)
SYMBOL
V
O
V
ADJ
ΔV
LINE
ΔV
LOAD
TEST CONDITION
V
OUT
+1 V < V
IN
< 5.5 V
2.5 V < V
IN
< 5.5 V
V
OUT
+1 V < V
IN
< 5.5 V
10 mA < I
L
< 3 A
I
L
= 300 mA
Dropout Voltage
(Note 5)
V
DROP
I
L
= 3 A
I
L
= 300 mA
Ground Pin Current
(Note 6)
I
GND
I
L
= 3 A
Ground Pin Current
(Note 7)
I
GND_OFF
V
EN
< 0.2 V
f = 1kHz
Power Supply Rejection Ratio
PSRR
f = 1kHz, C
FF
= 1uF
Thermal Shutdown Temperature
Logic Low
Enable threshold
Logic High
Enable Input Current
V
IH
I
EN
Output = High
V
EN
= V
IN
2.0
-
-
0.1
-
-
1
V
uA
T
SD
V
IL
-
Output = Low
-
-
-
65
165
-
-
-
0.4
ºC
V
-
-
-
0.40
0.5
55
-
-
400
0.40
MIN.
-2
-3
0.784
0.776
-
-
-
TYP.
0
0.8
0.15
0.20
45
MAX.
2
3
0.816
0.824
-
0.40
0.50
0.60
55
65
500
600
0.6
1.0
0.6
1.0
1
2
-
dB
UNIT
%
V
%/V
%
mV
mA
uA
Note 1. Stresses listed as the absolute maximum ratings may cause permanent damage to the device. These are for stress ratings. Functional
operating of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not
implied. Exposure to absolute maximum rating conditions for extended periods may remain possibly to affect device reliability.
Note 2. The minimum operating value for input voltage is equal to either (V
OUT,NOM
+ V
DROP
) or 2.5V, whichever is greater.
Note 3. Output voltage line regulation is defined as the change in output voltage from the nominal value due to change in the input line voltage.
Output voltage load regulation is defined as the change in output voltage from the nominal value due to change in load current.
Note 4. Regulation is measured at constant junction temperature by using a 10ms current pulse. Devices are tested for load regulation in the
load range from 10mA to 3A.
Note 5. Dropout voltage is defined as the minimum input to output differential voltage at which the output drops 2% below the nominal value.
Dropout voltage specification applies only to output voltages of 2.5V and above. For output voltages below 2.5V, the dropout voltage is
nothing but the input to output differential, since the minimum input voltage is 2.5V
Note 6. Ground current, or quiescent current, is the difference between input and output currents. It's defined by I
GND1
= I
IN
- I
OUT
under the
given loading condition. The total current drawn from the supply is the sum of the load current plus the ground pin current.
Note 7. Ground current, or standby current, is the input current drawn by a regulator when the output voltage is disabled by an enable signal.
Apr. 2011 – Rev. 1. 0
5/9
HTC
京公网安备 11010802033920号
EEWORLD
