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APW7080 Datasheet Preview

APW7080 Datasheet

Asynchronous Step-Down Converter

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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 80mP-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.
80mIntegrated 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/




ANPEC

APW7080 Datasheet Preview

APW7080 Datasheet

Asynchronous Step-Down Converter

No Preview Available !

APW7080
Ordering and Marking Information
APW7080
Assembly Material
Handling Code
Temperature Range
Package Code
Package Code
KA : SOP-8P
Operating Ambient Temperature Range
I : -40 to 85 °C
Handling Code
TR : Tape & Reel
Assembly Material
L : Lead Free Device G : Halogen and Lead Free Device
APW7080 KA :
APW7080
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-
020C 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
VIN 1
8 GND
EN 2 9 7 FB
UGND 3 LX 6 COMP
VCC 4
5 LX
SOP-8P
Top View
The Pin 5 must be connected to the Exposed Pad
Absolute Maximum Ratings (Note 1)
Symbol
Parameter
Rating
VIN VIN Supply Voltage (VIN to GND)
VLX LX to GND Voltage
VCC
VUGND_GND
VVIN_UGND
VCC Supply Voltage (VCC to GND)
UGND to GND Voltage
VIN to UGND Voltage
EN to GND Voltage
> 100ns
< 100ns
VIN > 6.2V
VIN 6.2V
-0.3 ~ 30
-2 ~ VIN+0.3
-5 ~ VIN+6
-0.3 ~ 6.5
< VIN+0.3
-0.3 ~ VIN+0.3
-0.3 ~ 6.5V
-0.3 ~ 20
FB, COMP to GND Voltage
Maximum Junction Temperature
-0.3 ~ VCC +0.3
150
TSTG
Storage Temperature
-65 ~ 150
TSDR Maximum Lead Soldering Temperature, 10 Seconds
260
Note 1: Stresses above those listed in “Absolute Maximum Ratings” may cause permanent damage to the device.
Unit
V
V
V
V
V
V
V
C
C
C
Copyright © ANPEC Electronics Corp.
Rev. A.6 - Jun., 2008
2
www.anpec.com.tw
Free Datasheet http://www.datasheetlist.com/


Part Number APW7080
Description Asynchronous Step-Down Converter
Maker ANPEC
Total Page 23 Pages
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