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Anpec Electronics Coropration

APW7062B Datasheet Preview

APW7062B Datasheet

Synchronous Buck PWM Controller

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APW7062B
Features
Simple Single-Loop Control Design
- Voltage-Mode PWM Control
Fast Transient Response
- Full 0–100% Duty Ratio
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Excellent Output Voltage Regulation
- 0.8V Internal Reference
- ± 1% Over Line Voltage and Temperature
Over Current Fault Monitor
- Uses Upper MOSFETs RDS (ON)
Converter Can Source and Sink Current
Small Converter Size
- 200kHz Free-Running Oscillator
- Programmable from 70kHz to 800kHz
14-Lead SOIC Package
Lead Free Available (RoHS Compliant)
Applications
Graphic Cards
DDR Memory Power Supply
DDR Memory Termination Voltage
Low-Voltage Distributed Power Supplies
Synchronous Buck PWM Controller
General Description
The APW7062B is a voltage mode, synchronous PWM
controller which drives dual N-Channel MOSFETs. It
integrates the control, monitoring and protection func-
tions into a single package, provides one controlled
power outputs with under-voltage and over-current
protection.
APW7062B provide excellent regulation for output load
variation. An internal 0.8V temperature-compensated
reference voltage is designed to meet the requirement
of low output voltage applications. It includes a 200kHz
free-running triangle-wave oscillator that is adjustable
from 70kHz to 800kHz.
The power-on-reset (POR) circuit monitors the VCC,
EN, OCSET input voltage to start-up or shutdown the
IC. The over-current protection (OCP) monitors the
output current by using the voltage drop across the
upper MOSFET’s RDS(ON), eliminating the need for a
current sensing resistor. The under-voltage protection
(UVP) monitors the voltage of FB pin for short-circuit
protection.
The over-current protection trip cycle the soft-start func-
tion until the fault events be removed. Under-voltage
protection will shutdown the IC directly.
Pinouts
RT
OCSET
SS
COMP
FB
EN
GND
1
2
3
4
5
6
7
14 VCC
13 PVCC
12 LGATE
11 PGND
10 BOOT
9 UGATE
8 PHASE
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.3 - Mar., 2005
1
www.anpec.com.tw




Anpec Electronics Coropration

APW7062B Datasheet Preview

APW7062B Datasheet

Synchronous Buck PWM Controller

No Preview Available !

APW7062B
Ordering and Marking Information
APW 7062B
Lead Free Code
H andling C ode
Temp. Range
Package Code
Package Code
K : SO P-14
O perating Junction T em p. R ange
C : 0 to 70°C
H andling C ode
TU : Tube
TR : Tape & Reel
Lead Free Code
L : Lead Free D evice
B lank : O riginal D evice
APW 7062B K :
www.DataSheet4U.com
APW 7062B
XXXXX
XXXXX - Date Code
NotesANPEC lead-free products contain molding compounds/die attach materials and 100% matte in plate
termination finish; which are fully compliant with RoHS and compatible with both SnPb and lead-free soldiering
operations. 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.
Block Diagram
VCC
OCSET
GND
EN
SS
P ower-On
Reset
vc c
IS S
10uA
5.8V
S oft S tart
:2
50% V REF
IO C SET
200uA
O.C.P
Com parator
U.V.P
Com parator
PW M
Com parator G ate Control
V R EF
E rror A m p
Os cillator
Tri a n g l e
W ave
FB
COMP
RT
Copyright ANPEC Electronics Corp.
Rev. A.3 - Mar., 2005
2
BOOT
UGATE
PHASE
PVCC
LGATE
PGND
www.anpec.com.tw


Part Number APW7062B
Description Synchronous Buck PWM Controller
Maker Anpec Electronics Coropration
Total Page 18 Pages
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