|
|
PDF APW7080 Data sheet ( Hoja de datos )
| Número de pieza | APW7080 | |
| Descripción | Asynchronous Step-Down Converter | |
| Fabricantes | ANPEC | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de APW7080 (archivo pdf) en la parte inferior de esta página. Total 23 Páginas | ||
|
No Preview Available !
APW7080
4A, 26V, 380kHz, Asynchronous Step-Down Converter
Features
General Description
• Wide Input Voltage from 4.5V to 26V
The APW7080 is a 4A, asynchronous, step-down converter
• Output Current up to 4A
with integrated 80mΩ P-channel MOSFET. The device,
•
Adjustable Output Voltage from 0.8V to 90%V
IN
- 0.8V Reference Voltage
- ±2.5% System Accuracy
with current-mode control scheme, can convert 4.5~26V
input voltage to the output voltage adjustable from 0.8 to
90% VIN to provide excellent output voltage regulation.
• 80mΩ Integrated P-Channel Power MOSFET
The APW7080 regulates the output voltage in automatic
• High Efficiency up to 91%
PSM/PWM mode operation, depending on the output
current, for high efficiency operation over light to full load
- Pulse-Skipping Mode (PSM) / PWM Mode Operation current.The APW7080 is also equipped with power-on-
• Current-Mode Operation
reset, soft-start, and whole protections (undervoltage, over
- Stable with Ceramic Output Capacitors
temperature, and current-limit) into a single package. In
- Fast Transient Response
shutdown mode, the supply current drops below 5µA.
• Power-On-Reset Monitoring
This device, available in an 8-pin SOP-8P package,
• Fixed 380kHz Switching Frequency in PWM Mode provides a very compact system solution with minimal
• Built-in Digital Soft-Start
external components and good thermal conductance.
• Output Current-Limit Protection with Frequency
Foldback
• 70% Undervoltage Protection
• Over-Temperature Protection
• <5µA Quiescent Current during Shutdown
• Thermal-Enhanced SOP-8P Package
• Lead Free and Green Devices Available
100
90
80 VOUT =5V
70 VOUT =3.3V
60
50
40
(RoHS Compliant)
30
Simplified Application Circuit
20
10
0.001 0.01
0.1
1
10
C1
10µF
VIN
+12
Output Current, I (A)
OUT
Applications
VIN C2
VCC UGND
L1
4A
C3 LX
• LCD Monitor / TV
VOUT • Set-Top Box
U1 D1
+3.3V • Portable DVD
APW7080
C4
VIN EN
R1 22µF
• Wireless LAN
COMP FB
1%
• ADSL, Switch HUB
R4
GND
R2
C6 1%
C5 C7
(Optional)
• Notebook Computer
• Step-down Converters Requiring High Efficiency
and 4A Output Current
ANPEC reserves the right to make changes to improve reliability or manufacturability without notice, and
advise customers to obtain the latest version of relevant information to verify before placing orders.
Copyright © ANPEC Electronics Corp.
Rev. A.6 - Jun., 2008
1
www.anpec.com.tw
Free Datasheet http://www.datasheetlist.com/
1 page  
APW7080
Electrical Characteristics (Cont.)
Refer to the typical application circuits. These specifications apply over VIN=12V, VOUT=3.3V and TA= -40 ~ 85oC, unless otherwise
specified. VCC is regulated by an internal regulator. Typical values are at TA=25oC.
Symbol
Parameter
Test Conditions
SOFT-START, ENABLE, AND INPUT CURRENTS (Cont.)
P-channel Power MOSFET
Leakage Current
VEN = 0V, VLX = 0V, VIN = 26V
IFB FB Pin Input Current
VFB = 0.8V
IEN EN Pin Input Current
VEN < 3V
APW7080
Min. Typ. Max.
Unit
- - 4 µA
-100
-
+100
nA
-500
-
+500
nA
Copyright © ANPEC Electronics Corp.
Rev. A.6 - Jun., 2008
5
www.anpec.com.tw
Free Datasheet http://www.datasheetlist.com/
5 Page 
APW7080
Block Diagram
VIN
VCC
FB
COMP
EN
VCC
4.2V Regulator
and
Power-On-Reset
POR
Current
Limit
70%VREF
UVP
Soft-Start
Soft-Start
and
Fault Logic
VREF
0.8V
Error
Amplifier
2.5V
0.8V
ENOK
Enable
Over
Temperature
Protection
Current Sense
Amplifier
Inhibit
Gate
Control
Gate
Driver
UG
Current
Compartor
Slope
Compensation
Oscillator
FB 380kHz
VIN
5.5V
VIN-to-UGND
Linear Regulator
UGND
LX
GND
Typical Application Circuit
1. 4.5~26V Single Power Input Step-down Converter (with Ceramic Input/Output Capacitors)
C1
10µF
VIN
4.5~26V
C3
1µF
VIN
VIN
4
VCC
3
UGND
LX 9
LX 5
R5 U1
100kΩ 2
APW7080
EN
6 COMP
FB 7
C2
1µF
D1
L1
4A
R1
1%
R4
GND
R2
C6 1%
C5 C7
(Optional)
VOUT
0.8V~90%VIN
C4 /4A
22µF
Copyright © ANPEC Electronics Corp.
Rev. A.6 - Jun., 2008
11
www.anpec.com.tw
Free Datasheet http://www.datasheetlist.com/
11 Page | ||
| Páginas | Total 23 Páginas | |
| PDF Descargar | [ Datasheet APW7080.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| APW7080 | Asynchronous Step-Down Converter | ANPEC |
| APW7083 | Synchronous Step-Down Converter | ANPEC |
| APW7085 | Asynchronous Step-Down Converter | ANPEC |
| APW7088 | Two-Phase Buck PWM Controller | ANPEC |
| 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 |