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PDF TJ4230 Data sheet ( Hoja de datos )

Número de pieza TJ4230
Descripción 3A Ultra Low Dropout Linear Regulator
Fabricantes HTC Korea 
Logotipo HTC Korea Logotipo



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3A Ultra Low Dropout Linear Regulator
TJ4230
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
APPLICATION
LCD TVs and SETTOP Boxes
Battery Powered Equipments
Motherboards and Graphic Cards
Microprocessor Power Supplies
Peripheral Cards
High Efficiency Linear Regulators
Battery Chargers
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.
SOP8-PP
TO-252 3L / 5L PKG
TO-263 3L / 5L PKG
ORDERING INFORMATION
Device
Package
TJ4230GDP-ADJ
TJ4230GDP-X.X
SOP8-PP
TJ4230GRS-ADJ
TJ4230GRS-X.X
TO-252 3L/5L
TJ4230GR-ADJ
TJ4230GR-X.X
TO-263 3L/5L
X.X = Output Voltage = 1.0, 1.2, 1.8, 2.5, and 3.3
Absolute Maximum Ratings
CHARACTERISTIC
SYMBOL
MIN.
MAX.
UNIT
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 *
VIN
VEN
IMAX
TSOL
TSTG
TJOPR
ΘJA-SOP8-PP
- 6.5
- 6.5
-3
260
-65 150
-40 125
68
V
V
A
ºC
ºC
ºC
ºC/W
* 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
Free Datasheet http://www.datasheet4u.com/

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TJ4230 pdf
3A Ultra Low Dropout Linear Regulator
TJ4230
ELECTRICAL CHARACTERISTICS (Note 1)
Limits in standard typeface are for TJ=25ºC, and limits in boldface type apply over the full operating temperature range.
Unless otherwise specified: VIN(Note 2) = VO(NOM) + 1 V, IL = 10 mA, CIN = 10 uF, COUT = 10 uF, VEN = VIN - 0.3 V
PARAMETER
SYMBOL
TEST CONDITION
MIN.
TYP.
MAX. UNIT
Output Voltage Tolerance
Adjustable Pin Voltage
(ADJ version)
Line Regulation(Note 3)
Load Regulation(Note 3, 4)
Dropout Voltage(Note 5)
Ground Pin Current(Note 6)
Ground Pin Current(Note 7)
VO VOUT+1 V < VIN < 5.5 V
VADJ
2.5 V < VIN < 5.5 V
ΔVLINE
VOUT+1 V < VIN < 5.5 V
ΔVLOAD 10 mA < IL < 3 A
VDROP
IL = 300 mA
IL = 3 A
IGND
IL = 300 mA
IL = 3 A
IGND_OFF VEN < 0.2 V
-2 0 2 %
-3 3
0.784 0.8 0.816 V
0.776
0.824
- 0.15 - %/V
0.40
-
0.20 0.50
%
0.60
- 45 55
65 mV
- 400 500
600
- 0.40 0.6
1.0 mA
- 0.40 0.6
1.0
- 0.5 1 uA
2
Power Supply Rejection Ratio
PSRR
f = 1kHz
f = 1kHz, CFF = 1uF
- 55 -
dB
- 65 -
Thermal Shutdown Temperature
TSD -
- 165 - ºC
Enable threshold
Logic Low
VIL Output = Low
Logic High VIH Output = High
- - 0.4 V
2.0 -
-V
Enable Input Current
IEN VEN = VIN
- 0.1 - uA
1
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 (VOUT,NOM + VDROP) 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 IGND1 = IIN - IOUT 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
Free Datasheet http://www.datasheet4u.com/

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