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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

MAX

SOL

STG

JOPR

MIN.

-65

-40

MAX.

6.5

260

150

125

UNIT

ºC

ºC/W

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

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, Enable, SENSE

Package Marking

TJ4230G-ADJ

TJ4230G-1.0

TJ4230G-1.2

TJ4230G-1.8

TJ4230G-2.5

TJ4230G-3.3

TJ4230

Status

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

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.

TO252/TO263 3 LEAD

Name

GND

OUT

Function

Input Supply

Ground

Output Voltage

TO252/TO263 5 LEAD

Name

GND

OUT

SENSE/ADJ

Function

Chip Enable

Input Supply

Ground

Output Voltage

Remote Sense

or Output Adjust

Name

OUT

SENSE/ADJ

GND

SOP8-PP

Function

N.C.

Chip Enable

Input Supply

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

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HTC

3A Ultra Low Dropout Linear Regulator

BASIC APPLICATION

Typical 3 Pin Application

VIN

10uF

OUT

VOUT

OUT

10uF

TJ4230

GND

Typical 5 / 8 Pin Application

VIN

10uF

OUT

VOUT

OUT

10uF

TJ4230

GND

SENSE

5 / 8 Pin Remote Load Sense Application

VIN

10uF

OUT

VOUT

TJ4230

GND

SENSE

OUT

10uF

Typical Adjustable Version Application

VIN

10uF

OUT

VOUT

ADJ

OUT

10uF

TJ4230

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

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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

= 10 mA, C

= 10 uF, C

OUT

= 10 uF, V

= V

- 0.3 V

PARAMETER

Output Voltage Tolerance

Adjustable Pin Voltage

(ADJ version)

Line Regulation

(Note 3)

Load Regulation

(Note 3, 4)

SYMBOL

ADJ

ΔV

LINE

ΔV

LOAD

TEST CONDITION

OUT

+1 V < V

< 5.5 V

2.5 V < V

< 5.5 V

OUT

+1 V < V

< 5.5 V

10 mA < I

< 3 A

= 300 mA

Dropout Voltage

(Note 5)

DROP

= 3 A

= 300 mA

Ground Pin Current

(Note 6)

GND

= 3 A

Ground Pin Current

(Note 7)

GND_OFF

< 0.2 V

f = 1kHz

Power Supply Rejection Ratio

PSRR

f = 1kHz, C

= 1uF

Thermal Shutdown Temperature

Logic Low

Enable threshold

Logic High

Enable Input Current

Output = High

= V

2.0

0.1

Output = Low

165

0.4

ºC

0.40

0.5

400

0.40

MIN.

-2

-3

0.784

0.776

TYP.

0.8

0.15

0.20

MAX.

0.816

0.824

0.40

0.50

0.60

500

600

0.6

1.0

0.6

1.0

UNIT

%/V

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

- 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

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HTC