APW7323 Просмотр технического описания (PDF) - Anpec Electronics
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APW7323 Datasheet PDF : 22 Pages
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APW7323/A
3.2A, 5V, 1MHz Synchronous Buck Converter
Features
General Description
• High Efficiency up to 94%
• Adjustable Output Voltage from 0.8V to VPVDD
• Operating from 2.9 to 6V Supply
• Integrated 85mΩ High Side / 75mΩ Low Side
MOSFETs
• Low Dropout Operation: 100% Duty Cycle
• Stable with Low ESR Ceramic Capacitors
• Current up to 3.2A
• Power-On-Reset Detection on VCC and VIN
• Model Selection :
APW7323 : Automatic PFM/PWM
APW7323A : Forced PWM
• Integrate Soft-Start and Soft-Stop
• Over-Temperature Protection
• Over-Voltage Protection
• Under-Voltage Protection
• High/ Low Side Current Limit
• Power Good Indication
• Enable/Shutdown Function
• Available in SOP-8P and TDFN3x3-10 Package
• Lead Free and Green Devices Available
(RoHS Compliant)
Applications
• Notebook Computer & UMPC
• LCD Monitor/TV
• Set-Top Box
• DSL, Switch HUBr
• Portable Instrument
APW7323/A is a synchronous buck converters with inte-
grated 85mΩ high side and 75mΩ low side power
MOSFETs. The APW7323/A with a current-mode control
scheme can convert wide input voltage of 2.9V to 6V to
the output voltage adjustable from 0.8V to 6V to provide
excellent output voltage regulation.
The APW7323/A is equipped with an automatic Skip/PWM
mode operation. At light load , the IC operates in the Skip
mode to reduce the switching losses. At heavy load, the
IC works in PWM mode.
The APW7323/A is also equipped with Power-on-reset,
soft start, soft-stop, and whole protections (under-voltage,
over-voltage, over-temperature and current-limit) into a
single package.
This device, available in SOP-8P and TDFN3x3-10
packages, provides a very compact system solution ex-
ternal components and PCB area.
Simplified Application Circuit
VIN
C2
ON
OFF
VIN
POK
R3
LX
VCC
C3 APW7323/A
FB
EN
GND PGND
L1
R1
VOUT
C4
R2 C1
(optional)
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.
1
Rev. A.5 - Aug., 2013
www.anpec.com.tw
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