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Anpec Electronics Coropration

APW7063 Datasheet Preview

APW7063 Datasheet

Synchronous Buck PWM and Linear Controller

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APW7063
Synchronous Buck PWM and Linear Controller
Features
General Description
Provide Two Regulated Voltages
- Synchronous Rectified Buck PWM Controller
www.DataSheet4U.com - Linear Controller
Fast Transient Response
- 0~85% Duty Ratio
Excellent Output Voltage Regulation
- 0.8V Internal Reference
- ±1% Over Line Voltage and Temperature
Over Current Protection
- Sense Low-Side MOSFET’s RDS(ON)
Under Voltage Lockout
Small Converter Size
- 250KHz Free-Running Oscillator
- Programmable From 70kHz to 800kHz
14-Lead SOIC Package
Lead Free Available (RoHS Compliant)
Applications
Graphic Cards
Memory Power Supplies
DSL or Cable MODEMs
Set Top Boxes
Low-Voltage Distributed Power Supplies
The APW7063 integrates PWM and linear controller,
as well as the monitoring and protection functions into
a single package. The synchronous PWM cont roller
which drives dualN-channel MOSFETs, which provides
one controlled power outputs with under-voltage and
over-current protect ions . Linear cont roller drives an
ext ernal N-c hannel MOS FE T with under-volt age
protection.
APW7063 provides excellent regulation for output load
variation. An internal 0.8V temperature-compensated
reference voltage is designed to meet the various low
output voltage applications . A PW 7063 inc ludes a
250kHz free-running t riangle-wave osc illator that is
adjust able from below 70KHz to over 800KHz.
A power-on-reset (POR) circuit limits the VCC minimum
opearting s upply voltage to ass ure the c ontroller
working well. Over current protec tion is achieved by
monit oring t he volt age drop ac ros s the low s ide
MOSFET, eliminating the need for a current sensing
resistor and short circuit condition is detected through
the FB pin. The over-current protection t riggers the
soft -start function until the fault events be removed,
but Under-voltage protection will shutdown IC directly.
Pull the COMP pin below 0.4V will shutdown t he
controller, and both gate drive signals will be low.
Pinouts
RT
SS
VREG
FB
COMP
GND
PHASE
1
2
3
4
5
6
7
14 FBL
13 DRIVE
12 VCC
11 LGATE
10 PGND
9 BOOT
8 UGATE
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.
C opyright © ANPEC Electronics C orp.
Rev. A.7 - Nov., 2005
1
www.anpec.com.tw




Anpec Electronics Coropration

APW7063 Datasheet Preview

APW7063 Datasheet

Synchronous Buck PWM and Linear Controller

No Preview Available !

APW7063
Ordering and Marking Information
APW7063
www.DataSheet4U.com
APW7063 K :
Lead Free Code
Handling Code
Temp. Range
Package Code
APW7063
XXXXX
Package Code
K : SOP - 14
Operating Ambient Temp. Range
C : 0 to 70 °C
Handling Code
TU : Tube
TR : Tape & Reel
Lead Free Code
L : Lead Free Device Blank : Original Device
XXXXX - Date Code
No te : ANPEC lea d-fre e p ro ducts co ntain mo ld ing comp oun ds /di e attach m ate ri als and 100 % matte ti n p la te
te rmin atio n fi nish ; wh ich are full ycompl iant with Ro HS and compa tibl e wi th both SnPb an d le ad-free sold ieri ng
op era tio ns. AN PEC le ad-free produ cts me et or exceed th e l ead -free req uireme nts of IPC /JEDEC J STD -02 0C
fo r MSL classi ficati on at lea d-fre e p eak re flo w temp era ture.
Block Diagram
VCC
GND
Power-On
Reset
5.8V
50%V REF
2
U.V.P
Comparator
SS
vcc
ISS
10uA
GateControl
Soft Start
and
Fault Logic
vcc
IOCSET
250uA
O.C.P
Comparator
VCC
VREF
Error Amp
FB COMP
PWM
Comparator
Oscillator
Triangle
Wave
RT
VCC
50%V REF 2
Regulator
V REF
VCC
VREG
BOOT
UGATE
PHASE
LGATE
PGND
FBL
DRIVE
C opyright © ANPEC Electronics C orp.
Rev. A.7 - Nov., 2005
2
www.anpec.com.tw


Part Number APW7063
Description Synchronous Buck PWM and Linear Controller
Maker Anpec Electronics Coropration
Total Page 21 Pages
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