BL8526 Datasheet, PDF (1/6 Pages) SHANGHAI BELLING CO., LTD. – 2A 1.4M 5.5V Synchronous Buck Converter

BL8526
2A 1.4M 5.5V Synchronous Buck Converter
DESCRIPTION
FEATURES
The BL8526 is a high efficiency
synchronous buck regulator. The device
operates from an input voltage range of
3.6V to 5.5V and provides an output
voltage from 0.8 to 5V while delivering up
to 2A of output current.
The internal synchronous switches
increase efficiency and eliminate the
need for an external Schottky diode. The
switching frequency is set by an external
resistor or can be synchronized to an
external clock. While switching frequency
is set to 1.4MHz, BL8526 can allow the
use of small external components, such
as ceramic input and output caps, as well
as small inductors, while still providing
low output ripples.
100% duty cycle provides low dropout
operation extending battery life in
portable systems.
 Range of Input Voltage: 3.6V~5.5V
 1μA Shutdown Current
 100% Duty Cycle
 High Efficiency: 92%
 No Schottky Diode Required.
 3.5A Current Limit
 0.8V Reference for Low Output
Voltage
 Operating Temp. Range: -20°C~85°C
 Demo Board Available
APPLICATIONS
 Cellular phones
 Digital Cameras
 MP3 and MP4 players
 Set top boxes
 Wireless and DSL Modems
 USB supplied Devices in Notebooks
 Portable Devices
TYPICAL APPLICATION
2.2uH
Vout / 3.3V
Vin
10uF
NC
RT
180K
PVDD VDD _{5.6K 3.3nF}
LX
COMP
GND
FB
BL^L8^C5²2¹6²³
31K
10uF
10K
www.belling.com.cn
1