APW7322 Datasheet, PDF (1/22 Pages) Anpec Electronics Coropration – 2A, 5V, 1MHz Synchronous Buck Converter

APW7322/A
2A, 5V, 1MHz Synchronous Buck Converter
Features
General Description
• High Efficiency up to 94%
• Adjustable Output Voltage from 0.8V to V_PVDD
• 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 2A
• Power-On-Reset Detection on VCC and VIN
• Mode Selestion :
APW7322 : Automatic PFM/PWM
APW7322A : 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 Packages
• Lead Free and Green Devices Available
(RoHS Compliant)
Pin Configuration
APW7322/A is a synchronous buck converters with inte-
grated 85mΩ high side and 75mΩ low side power
MOSFETs. The APW7322/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 APW7322/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 APW7322/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-8, TDFN3x3-10 packages,
provides a very compact system solution external com-
ponents and PCB area.
Applications
• Notebook Computer & UMPC
• LCD Monitor/TV
• Set-Top Box
• DSL, Switch HUBr
• Portable Instrument
Simplified Application Circuit
EN 1
PGND 2
PGND 3
LX 4
LX 5
10 FB
9 GND
EP
8 POK
7 VCC
6 VIN
TDFN3x3-10
(Top View)
EP
Exposed Pad
(connected to GND plane for better heat dissipation)
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.6 - Aug., 2013
www.anpec.com.tw