|
|
PDF A6303A Data sheet ( Hoja de datos )
| Número de pieza | A6303A | |
| Descripción | LOW DROPOUT VOLTAGE REGULATOR | |
| Fabricantes | AiT Semiconductor | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de A6303A (archivo pdf) en la parte inferior de esta página. Total 16 Páginas | ||
|
No Preview Available !
AiT Semiconductor Inc.
www.ait-ic.com
A6303A
CMOS LOW DROPOUT REGULATOR (LDO)
300mA ULTRA-LOW NOISE, ULTRA-FAST RESPONSE
DESCRIPTION
The A6303A is designed for portable RF and
wireless applications with demanding
performanceand space requirements.
The A6303A performance is optimized for
battery –powered systems to deliver ultra low
noise and low quiescent current. Regulator
ground currentincreases only slightly in dropout,
furtherprolonging the battery life.
The A6303A also works with low-ESR ceramic
capacitors, reducing the amount of board space
necessary for power applications, critical in
hand-held wireless devices. The A6303A
consumes less than 0.01μA in shutdown mode
and has fast turn-on time less than 50μs. The
other features include ultra low dropout voltage,
high output accuracy,current limiting protection
and high ripple rejection ratio.
The A6303A is available in SOT-23, SOT-25 and
SC70-5 Packages.
ORDERING INFORMATION
Package Type
Part Number
SOT-23
E3
A6303AE3R-XXZ
A6303AE3VR-XXZ
SOT-25
E5
A6303AE5R-XXZY
A6303AE5VR-XXZY
SC70-5
C5
A6303AC5R-XX
A6303AC5VR-XX
XX: Output Voltage
12= 1.2V, 25=2.5V, 33=3.3V
Z: Output Type
See Pin description
Note
Y: Enable Function
H: High Enable
L: Low Enable
V: Green Package
R: Tape & Reel
AiT provides all Pb free products
Suffix “ V “ means Green Package
FEATURES
Ultra-low Noise for RF Application
(SOT-23)
Ultra-Fast Response in Line/Load Transient
<0.01μA Standby Current When Shutdown
Low Dropout: 210mV@300mA
Wide Operating Voltage Ranges: 2V to 6V
Wide Output Voltage Range:1.2V to 5V
(SOT-23)
TTL-logic-Controlled Shutdown Input
(SOT-25, SC70-5)
Low Temperature Coefficient
Current Limiting Protection
Thermal Shutdown Protection
Only 1μF Output Capacitor Required for Stability
High Power Supply Rejection Ratio
Custom Voltage Available
Fast output discharge (SOT-25, SC70-5)
Available in SOT-23, SOT-25, SC70-5 Package
APPLICATION
Cellular and Smart Phones
Battery-Powered Equipment
Laptop, Palmtops, Notebook Computers
Hand-Held Instruments
PCMCIA Cards
MP3/MP4/MP5 Players
Portable Information Appliances
TYPICAL APPLICATION
NOTE: Output capacitor (C2 ≥ 2.2uF) is recommended in
A6303A-1.2V, A6303A-1.3V, A6303A-1.5V and A6303A-1.8V
application to assure the stability of circuit.
REV1.3
-DEC2009 RELEASED, NOV 2011 UPDATED -
-1-
1 page  
AiT Semiconductor Inc.
www.ait-ic.com
A6303A
CMOS LOW DROPOUT REGULATOR (LDO)
300mA ULTRA-LOW NOISE, ULTRA-FAST RESPONSE
TYPICAL PERFORMANCE CHARACTERISTICS
1. Output Voltabe vs. Temperature
VIN = 3.6V, CIN = COUT = 1uF
2. Quiescent Current vs. Temperature
VIN= 3.6V, CIN = COUT = 1uF
3. Dropout Voltage vs. Load Current
VOUT = 2.8V(SOT-23,), CIN = COUT = 1uF
4. PSRR
VIN = 4.2V, CIN = 1uF, COUT = 1uF X 7R
5. CE Pin Shutdown Threshold Vs. Temperature
(SOT-25, SC70-5) VIN=3.6V, CIN = COUT = 1uF
6. Current Limit Vs. Input Voltage
CIN = COUT = 1uF, VOUT=2.8V
REV1.3
-DEC2009 RELEASED, NOV 2011 UPDATED -
-5-
5 Page 
AiT Semiconductor Inc.
www.ait-ic.com
A6303A
CMOS LOW DROPOUT REGULATOR (LDO)
300mA ULTRA-LOW NOISE, ULTRA-FAST RESPONSE
Where TJ (MAX) is the maximum operation junction temperature 125℃, TA is the ambient temperature and
the θJA is the junction to ambient thermal resistance. For recommended operating conitions specification of
A6303A, where TJ (MAX) is the maximum junction temperature of the die (125°C) and TA is the maximum
ambient temperature. The junction to ambient thermal resistance (θJA is layout dependent) for SOT-23,
SOT-25 package is 250°C/W, SC70-5 package is 333°C/W, on standard JEDEC 51-3 thermal test board. The
maximum power dissipation at TA = 25°C can be calculated by following formula:
The maximum power dissipation durepends on operating ambient temperature for fixed TJ (MAX) and thermal
resteance θJA. It is also useful to calculate the junction of temperature A6303A under a set of specific
conditions. In this example let the Input voltage VIN = 3.3V, the output current IOUT = 300mA and the case
temperature TA = 40℃ measured by a thermal couple during operation. The power dissipation for the VOUT =
2.8V version of the version of the A6303A can be calculated as:
And the junction temperature, TJ, can be calculated as follows:vf
For this operating condition, TJ is lower than the absolute maximum operating junction temperature,125°C, so
it is safe to use the A6303A in this configuration.
Layout considerations
To improve ac performance such as PSRR, output noise, and transient response, it is recommended that the
PCB be designed with separate ground planes for VIN and VOUT, with each ground plane connected only at
the GND pin of the device.
REV1.3
-DEC2009 RELEASED, NOV 2011 UPDATED -
- 11 -
11 Page | ||
| Páginas | Total 16 Páginas | |
| PDF Descargar | [ Datasheet A6303A.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| A6303A | LOW DROPOUT VOLTAGE REGULATOR | AiT Semiconductor |
| 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 |