DATA SHEET
www.onsemi.com
High Efficiency Serial LED
Driver and OLED Supply
with 20V Integrated Switch
SOT−23 (5−LEAD)
CASE 527 AH
FAN5331
MARKING DIAGRAM
Description
The FAN5331 is a general purpose, fixed−frequency boost
converter designed to operate at high switching frequencies in order to
minimize switching noise measured at the battery terminal of
hand−held communications equipment. Quiescent current in normal
mode of operation as well as in shutdown mode is designed to be
minimal in order to extend battery life. Normal mode of operation or
shutdown mode can be selected by a logic level shutdown circuitry.
The low ON−resistance of the internal N−channel switch ensures
high efficiency and low power dissipation. A cycle−by−cycle current
limit circuit keeps the peak current of the switch below a typical value
of 1 A. The FAN5331 is available in a 5−lead SOT− 23 package.
Features
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1.6 MHz Switching Frequency
Low Noise
Low RDS(ON): 0.5 W
Adjustable Output Voltage
1 A Peak Switch Current
1 W Output Power Capability
Low Shutdown Current:
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