|
|
PDF TJ4940 Data sheet ( Hoja de datos )
| Número de pieza | TJ4940 | |
| Descripción | 1A Ultra Low Dropout Linear Regulator | |
| Fabricantes | HTC Korea | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de TJ4940 (archivo pdf) en la parte inferior de esta página. Total 8 Páginas | ||
|
No Preview Available !
1A Ultra Low Dropout Linear Regulator
TJ4940
FEATURES
• Ultra Low Dropout Voltage
• Compatible with low ESR MLCC as Input/Output Capacitor
• Good Line and Load Regulation
• Guaranteed Output Current of 1A
• Available in SOT-223 and TO-252 Packages
• Fixed Output Voltages : 1.0V, 1.2V, 1.8V, 2.5V, and 3.3V
• 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 TJ4940 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 TJ4940 is developed on a CMOS process
technology which allows low quiescent current operation
independent of output load current. This CMOS process
also allows the TJ4940 to operate under extremely low
dropout conditions.
SOT-223 3L
TO252 3L PKG
ORDERING INFORMATION
Device
Package
TJ4940xS-X.X
SOT-223 3L
TJ4940GRS-X.X
TO-252 3L
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)
Maximum Output Current
Lead Temperature (Soldering, 5 sec)
Storage Temperature Range
Operating Junction Temperature Range
VIN
IMAX
TSOL
TSTG
TJOPR
- 6.5 V
- 1A
260 ºC
-65 150 ºC
-40 125 ºC
* 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.
Jul. 2011 – Preliminary
1/8 HTC
Free Datasheet http://www.datasheet4u.com/
1 page  
1A Ultra Low Dropout Linear Regulator
TJ4940
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
Line Regulation(Note 1)
Load Regulation(Note 1, 2)
Dropout Voltage(Note 3)
Ground Pin Current(Note 4)
VO VOUT+1 V < VIN < 5.5 V
ΔVLINE
VOUT+1 V < VIN < 5.5 V
ΔVLOAD 10 mA < IL < 1 A
VDROP
IL = 100 mA
IL = 1 A
IGND
IL = 100 mA
IL = 1 A
-2 0 2 %
-3 3
- 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
Power Supply Rejection Ratio
PSRR f = 1kHz
- 55 - dB
Thermal Shutdown Temperature
TSD -
- 165 - ºC
Thermal Shutdown Hysteresis
ΔTSD
- 10 - ºC
Note 1. 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 2. 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 1A.
Note 3. 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 4. 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.
Jul. 2011 – Preliminary
5/8 HTC
Free Datasheet http://www.datasheet4u.com/
5 Page | ||
| Páginas | Total 8 Páginas | |
| PDF Descargar | [ Datasheet TJ4940.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| TJ4940 | 1A Ultra Low Dropout Linear Regulator | HTC Korea |
| Número de pieza | Descripción | Fabricantes |
| SLA6805M | High Voltage 3 phase Motor Driver IC. |
 Sanken |
| SDC1742 | 12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters. |
 Analog Devices |
|
DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares, |
| DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar |