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PDF TJ4220 Data sheet ( Hoja de datos )
| Número de pieza | TJ4220 | |
| Descripción | 2A Ultra Low Dropout Linear Regulator | |
| Fabricantes | HTC Korea | |
| Logotipo |  |
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2A Ultra Low Dropout Linear Regulator
TJ4220
FEATURES
• Ultra Low Dropout Voltage
• Compatible with low ESR MLCC as Input/Output Capacitor
• Good Line and Load Regulation
• Guaranteed Output Current of 2A
• Available in SOP8, SOP8-PP, SOT-223 and 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 / SOP8-PP
SOT-223 3L
TO252 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
DESCRIPTION
The TJ4220 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 TJ4220 is developed on a CMOS process
technology which allows low quiescent current operation
independent of output load current. This CMOS process
also allows the TJ4220 to operate under extremely low
dropout conditions.
TO-263 3L / 5L PKG
ORDERING INFORMATION
Device
TJ4220GD-ADJ
TJ4220GD-X.X
TJ4220GDP-ADJ
TJ4220GDP-X.X
TJ4220xS-ADJ
TJ4220xS-X.X
TJ4220GRS-ADJ
TJ4220GRS-X.X
TJ4220GR-ADJ
TJ4220GR-X.X
Package
SOP8
SOP8-PP
SOT-223 3L/5L
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
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
-2
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.
Jun. 2011 – R1.0.6
1/14
HTC
1 page  
2A Ultra Low Dropout Linear Regulator
TJ4220
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)
Power Supply Rejection Ratio
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 < 2 A
VDROP
IL = 200 mA
IL = 2 A
IGND
IL = 200 mA
IL = 2 A
IGND_OFF
PSRR
VEN < 0.2 V
f = 1kHz
f = 1kHz, CFF = 1uF
-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
- 55 -
dB
- 65 -
Current Limit
ILIMIT
-
- 5 -A
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 2A.
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.
Jun. 2011 – R1.0.6
5/14
HTC
5 Page 
2A Ultra Low Dropout Linear Regulator
TJ4220
VIN : 1.0V/div, VOUT : 1.0V/div, Time : 50ms/div
Start Up @ Iout=0A
(Cff=1uF, R2=51KΩ, R1=24KΩ)
VIN : 1.0V/div, VOUT : 1.0V/div, Time : 50ms/div
Start Up @ Iout=2A
(Cff=1uF, R2=51KΩ, R1=24KΩ)
VIN : 1.0V/div, VOUT : 1.0V/div, Time : 50ms/div
Start Up @ Iout=1A
(Cff is varied, R2=51KΩ, R1=24KΩ)
VIN : 2.0V/div, VEN : 2.0V/div, VOUT : 2.0V/div, Time : 5ms/div
Start Up with Cdelay @ Iout=10mA
(Cdelay is varied, Cff=10nF, R2=51KΩ, R1=24KΩ)
IOUT : 1.0A/div, VOUT : 20mV/div, Time : 500ms/div
Load Transient Response
(Cff=10nF, R2=51KΩ, R1=24KΩ)
Jun. 2011 – R1.0.6
IOUT : 1.0A/div, VOUT : 20mV/div, Time : 500ms/div
Load Transient Response
(Cff=10nF, R2=51KΩ, R1=24KΩ)
11/14
HTC
11 Page | ||
| Páginas | Total 14 Páginas | |
| PDF Descargar | [ Datasheet TJ4220.PDF ] | |
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