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APW7083

更新时间： 2024-10-14 12:35:47
品牌 Logo 应用领域
茂达 - ANPEC 转换器
页数 文件大小 规格书
22页 428K
描述
5A, 26V, 380kHz, Synchronous Step-Down Converter

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APW7083 数据手册

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APW7083  
5A, 26V, 380kHz, Synchronous Step-Down Converter  
Features  
General Description  
·
·
·
Wide Input Voltage from 4.5V to 26V  
Output Current Up to 5A  
The APW7083 is a 5A, synchronous, step-down converter  
with integrated 50mW P-channel power MOSFET and  
Adjustable Output Voltage from 0.8V to 90%VIN  
- 0.8V Reference Voltage  
20mW N-channel power MOSFET. The device, with cur-  
rent-mode control scheme, can convert 4.5~26V input volt-  
age to the output voltage adjustable from 0.8 to 90% VIN to  
provide excellent output voltage regulation.  
- ±2.5% System Accuracy  
·
Integrated 50mW P-Channel Power MOSFET and  
20mW N-Channel Power MOSFET  
High Efficiencyup to 95%  
The APW7083 regulates the output voltage in an auto-  
matic PSM/PWM mode operation, depending on the out-  
put current, for high efficiency operation over light to full  
load current. The APW7083 is also equipped with power-  
on-reset, soft-start, and whole protections (including over-  
voltage, under-voltage, over-temperature, and current-  
limit) in a single package. In shutdown mode, the supply  
current drops below 5mA.  
·
·
Current-Mode Operation  
- Stable with Ceramic Output Capacitors  
- Fast Transient Response  
·
·
·
Power-On-Reset Monitoring  
Fixed 380kHz Switching Frequencyin PWM Mode  
Automatic Pulse-Skipping Mode (PSM)/PWM  
Mode Operation  
This device, available in 28-pin TQFN5x6 package, pro-  
vides a very compact system solution with minimal exter-  
nal components and good thermal conductance.  
·
·
Built-in Digital Soft-Start  
Output Current-Limit Protection with Frequency  
Foldback  
·
·
·
·
·
·
·
70% Under-Voltage Protection  
Over-Temperature Protection  
118% Over-Voltage Protection  
<5mA Quiescent Current During Shutdown  
Thermal-Enhanced TQFN5x6-28 Package  
Pb-Free Available as an Option  
Lead Free and Green Devices Available  
(RoHS Compliant)  
Simplified Application Circuit  
VIN  
4.5V~26V  
C1  
10mF  
C2  
1mF  
VIN  
L1  
5A  
VOUT  
0.8V~90%VIN, 5A  
VCC UGND  
C3  
1mF  
LX  
U1 ZCS  
APW7083  
PGND  
EN  
R5  
100kW  
C4  
22mF  
VIN  
Applications  
R1  
COMP  
GND  
FB  
1%  
R2  
1%  
R4  
C5  
·
·
·
·
·
·
·
LCD Monitor / TV  
C6  
C7  
(Optional)  
SetTop Box  
Portable DVD  
Wireless LAN  
ADSL, Switch HUB  
Notebook Computer  
Step-Down Converters Requiring High Efficiency  
and 5A 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 ã ANPEC Electronics Corp.  
1
www.anpec.com.tw  
Rev. A.5 - Sep., 2011  
1234567...22

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