BL8526
2A 1.4M 5.5V Synchronous Buck Converter
DESCRIPTION
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.
FEATURES
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
NC
PVDD
10uF
LX
GND
LC2123
BL8526
RT
VDD
COMP
FB
10K
5.6K
180K
3.3nF
31K
10uF
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