The FS3348 is a step-up DC/DC converter with
a constant current to drive white LEDs or similar .
The device can drive up to eight LEDs in series
from a Li-Ion cell. The LED current is set by the
external resistor (R SET ) and is directly regulated
by the feedback (FB) voltage (typ: 200mV)
across the external resistor R SET .
FS3348 To ensure maximum safety during operation, the
output has integrated overvoltage protection that
prevents damage to the device in case of some
fault conditions. The OVP voltage can be
programmed by two external resistors.
The H 0 is available in a tiny SOP8/PP
package.
Input Voltage Range: 2.2V to 6V
Programmable LED Current
Drives LEDs up to 2 7 V
Switching Frequency: up to 800kHz
Wide Dimming Frequency Range: 20kHz to
360kHz
Programmable Overvoltage Protection
Tiny SOP8/PP Package
PDA
Cellular Phones
Handheld Devices
MP3 Players
GPS Receivers
