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APW7083 Datasheet Preview

APW7083 Datasheet

Synchronous Step-Down Converter

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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
Adjustable Output Voltage from 0.8V to 90%V
IN
- 0.8V Reference Voltage
- ±2.5% System Accuracy
Integrated 50mP-Channel Power MOSFET and
20mN-Channel Power MOSFET
High Efficiency up to 95%
Current-Mode Operation
- Stable with Ceramic Output Capacitors
- Fast Transient Response
Power-On-Reset Monitoring
Fixed 380kHz Switching Frequency in PWM Mode
Automatic Pulse-Skipping Mode (PSM)/PWM
Mode Operation
Built-in Digital Soft-Start
Output Current-Limit Protection with Frequency
Foldback
70% Under-Voltage Protection
Over-Temperature Protection
118% Over-Voltage Protection
<5µA Quiescent Current During Shutdown
Thermal-Enhanced TQFN5x6-28 Package
Pb-Free Available as an Option
Lead Free and Green Devices Available
(RoHS Compliant)
Applications
LCD Monitor / TV
SetTop Box
Portable DVD
Wireless LAN
ADSL, Switch HUB
Notebook Computer
Step-Down Converters Requiring High Efficiency
and 5A Output Current
The APW7083 is a 5A, synchronous, step-down converter
with integrated 50mP-channel power MOSFET and
20mN-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.
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 5µA.
This device, available in 28-pin TQFN5x6 package, pro-
vides a very compact system solution with minimal exter-
nal components and good thermal conductance.
Simplified Application Circuit
C1
10µF
VIN
4.5V~26V
C3
1µF
R5
100k
VIN
VIN
VCC UGND
LX
U1 ZCS
APW7083
EN PGND
COMP FB
R4 GND
R2
C6 1%
C5
C2
1µF L1
5A
R1
1%
C7
(Optional)
VOUT
0.8V~90%VIN, 5A
C4
22µF
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.5 - Sep., 2011
1
www.anpec.com.tw
Free Datasheet http://www.datasheetlist.com/




ANPEC

APW7083 Datasheet Preview

APW7083 Datasheet

Synchronous Step-Down Converter

No Preview Available !

APW7083
Ordering and Marking Information
APW7083
Assembly Material
Handling Code
Temperature Range
Package Code
Package Code
QB : TQFN5x6-28
Operating Ambient Temperature Range
I : -40 to 85 oC
Handling Code
TR : Tape & Reel
Assembly Material
G : Halogen and Lead Free Device
APW7083 QB :
APW7083
XXXXX
XXXXX - Date Code
Note: ANPEC lead-free products contain molding compounds/die attach materials and 100% matte tin plate termination finish; which
are fully compliant with RoHS. ANPEC lead-free products meet or exceed the lead-free requirements of IPC/JEDEC J-STD-020D for
MSL classification at lead-free peak reflow temperature. ANPEC defines “Green” to mean lead-free (RoHS compliant) and halogen
free (Br or Cl does not exceed 900ppm by weight in homogeneous material and total of Br and Cl does not exceed 1500ppm by
weight).
Pin Configuration
FB 1
COMP 2
ZCS 3
PGND 4
PGND 5
PGND 6
PGND 7
LX 8
PGND
LX
LX
22 PGND
21 VIN
20 LX
19 LX
18 LX
17 LX
16 LX
15 LX
TQFN5x6-28
(Top View)
= Thermal Pad (connected to copper plane for better heat dissipation)
Copyright © ANPEC Electronics Corp.
Rev. A.5 - Sep., 2011
2
www.anpec.com.tw
Free Datasheet http://www.datasheetlist.com/



Part Number APW7083
Description Synchronous Step-Down Converter
Maker ANPEC
Total Page 22 Pages
PDF Download

APW7083 Datasheet PDF





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