|
|
PDF ACT8310 Data sheet ( Hoja de datos )
| Número de pieza | ACT8310 | |
| Descripción | (ACT8309 - ACT8311) PWM Step-Down DC/DCs | |
| Fabricantes | Active-Semi | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de ACT8310 (archivo pdf) en la parte inferior de esta página. Total 10 Páginas | ||
|
No Preview Available !
Active-Semi
ACT8309/8310/8311
Rev PrA, 24-Jan-08
Advanced Product Information – All Information Subject to Change
1.5A, PWM Step-Down DC/DCs in TDFN
FEATURES
• Multiple Patents Pending
• Up to 95% High Efficiency
• Up to 1.5A Guaranteed Output Current (ACT8311)
• 1.35MHz Constant Frequency Operation
• Internal Synchronous Rectifier Eliminates
Schottky Diode
• ACT8309: Up to 900mA
• ACT8310: Up to 1.2A
• ACT8311: Up to 1.5A
• 100% Duty Cycle Low-Dropout Operation
• 0.1µA Shutdown Current
• Small TDFN33-8 Package
− RoHS-Compliant
• Independent Enable/Disable Control
• Minimal External Components
APPLICATIONS
• Wireless Handhelds
• Portable Devices
• GPS/PND equipment
GENERAL DESCRIPTION
The patent-pending ACT8309/ACT8310/ACT8311
are current-mode, fixed-frequency PWM, synchro-
nous step-down DC/DC converters that are capable
of delivering 1.5A with efficiency of up to 95%.
These devices operate with a fixed frequency of
1.35MHz, minimizing noise in sensitive equipment
as well as optimizing both efficiency and component
size and cost.
These devices feature very low-resistance power
MOSFET and 100% duty cycle operation, making
them ideal choices for portable applications requir-
ing a 3.0V or 3.3V rail to be generated from a Li+
battery.
The ACT8311 is capable of supplying up to 1.5A of
output current, while the ACT8309 and ACT8310
are capable of supplying up to 900mA and 1.2A,
respectively. All three devices have adjustable out-
put voltages that are programmable down to 1.2V.
Contact Active-Semi for custom fixed output voltage
availability.
www.DataSheet4U.com
SYSTEM BLOCK DIAGRAM
2.7V to 5.0V
ON
OFF
Power-OK
Output
IN Active-Semi SW
ACT8311
EN FB
POK
GP G
VOUT
Up to 1.5A
Pb-free
Innovative Products. Active Solutions.
-1-
www.active-semi.com
Copyright © 2008 Active-Semi, Inc.
1 page  
Active-Semi
Figure1:
Functional Block Diagram
ACT8309/8310/8311
Rev PrA, 24-Jan-08
Active-Semi
ACT8309
ACT8310
IN
ACT8311
EN IN
OUT
POK
PWM
CONTROL
SW
OUT
GP
FB
G
Figure 2:
www.DaTtaySpheiceat4lUA.cpomplication Circuit
2.7V to 5.0V
10µF
OUT
10100k0Ωk?
IN
IN Active-Semi
SW
EN ACT8311
FB
POK
GP G
3.3µH
549k?Ω
200k?Ω
OUT 3.0V
Up to 1.5A
22µF
Innovative Products. Active Solutions.
-5-
www.active-semi.com
Copyright © 2008 Active-Semi, Inc.
5 Page | ||
| Páginas | Total 10 Páginas | |
| PDF Descargar | [ Datasheet ACT8310.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| ACT8310 | (ACT8309 - ACT8311) PWM Step-Down DC/DCs | Active-Semi |
| ACT8311 | (ACT8309 - ACT8311) PWM Step-Down DC/DCs | Active-Semi |
| 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 |