APW8804 Datasheet, PDF (1/21 Pages) Anpec Electronics Coropration – 3A 5V 1MHz Synchronous Buck Converter

APW8804
3A 5V 1MHz Synchronous Buck Converter
Features
General Description
• High Efficiency up to 95%
APW8804 is a 3A synchronous buck converter with inte-
- Automatic PFM/PWM Mode Operation
grated 65mΩ high side and 55mΩ low side power
•
Adjustable Output Voltage from 0.6V to V
PVDD
MOSFETs. The APW8804, design with a current-mode
• Integrated 65mΩ High Side / 55mΩ Low Side ^{control scheme, can convert wide input voltage of 2.6V to}
MOSFETs
• Low Dropout Operation: 100% Duty Cycle
• Stable with Low ESR Ceramic Capacitors
• Power-On-Reset Detection on VDD and PVDD
6V to the output voltage adjustable from 0.6V to 6V to
provide excellent output voltage regulation.
The APW8804 is equipped with an automatic PFM/PWM
mode operation. At light load , the IC operates in the PFM
mode to reduce the switching losses. At heavy load, the
• Integrated Soft-Start and Soft-Stop
IC works in PWM mode. At PWM mode, the switching
• Over-Temperature Protection
frequency is set by the external resistor.
• Over-Voltage Protection
The APW8804 is also equipped with Power-on-reset, soft-
• Under-Voltage Protection
• High/ Low Side Current Limit
• Power Good Indication
• Enable/Shutdown Function
• Small TDFN3x3-10 and SOP-8P Packages
• Lead Free and Green Devices Available
start, soft-stop, and whole protections (under-voltage,
over-voltage, over-temperature and current-limit) into a
single package.
This device, available TDFN3x3-10 and SOP-8P, provides
a very compact system solution external components and
PCB area.
(RoHS Compliant)
Simplified Application Circuit
Applications
• Notebook Computer & UMPC
• LCD Monitor/TV
• Set-Top Box
• DSL, Switch HUBr
• Portable Instrument
V_IN
ON
OFF
PVDD
LX
VDD
FB
APW8804
POK
GND
EN
(option)
V_OUT
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.4 - Dec., 2012
www.anpec.com.tw