APW7566 Datasheet, PDF (1/19 Pages) Anpec Electronics Coropration – The Synchronous Buck Converter with 300mA LDO

APW7566/A
The Synchronous Buck Converter with 300mA LDO
Features
General Description
• Wide Input Operating Range: 4.5V~5.5V
• Synchronous Buck Regulators for SoC:
-Fixed 1.05V (For APW7566)
-Fixed 1.2V (For APW7566A)
- 1.2A peak Output Current for Core Power
- 2MHz Switching Frequency
• Low-Dropout Linear Regulators for System Power:
- Fixed 3.3V, 300mA Output Current with high PSRR
• Thermal-Overload Protection
• Power-OK Indicator after LDO Ready
• TDFN2x2-8 Package
• Lead Free Green Devices Available (RoHS
Compliant)
Applications
• IP-Cam
• Car Recorder
• Security
The APW7566 is P-channel low dropout linear regulator
and synchronous buck converter which needs input volt-
age from 4.5 to 5.5V.
Synchronous buck converter is integrated high side and
low side power MOSFET. It is equipped with an auto-
matic PSM/PWM mode operation. At light load, the IC op-
erates in the PSM mode to reduce the switching losses.
At heavy load, the IC works in PWM mode.
Low dropout linear regulator delivers current up to 300mA
to set output voltage, and it also can work with low ESR
ceramic capacitors. Typical dropout voltage is only 240mV
at 300mA loading.
The APW7566 is equipped with Power-on-reset, shut-
down control, soft start, over-temperature and current-
limit into a single package to protect the device against
wrong logic control and over-temperature and current
over-loads.
The APW7566 available TDFN2x2-8 provides a very com-
pact system solution external components and PCB area.
Simplified Application Circuit
VIN
Cin
VDD
EN
LX
PGND
POK
VLDO
CLDO
POK
PWM_FB
VLDO
AGND
VPWM
L
Cout
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.2 - Jan., 2016
www.anpec.com.tw