FAN5341 Series

LED Driver, Series Boost, with Integrated Schottky Diode and Single-wire Digital Interface

Catalog

LED Driver, Series Boost, with Integrated Schottky Diode and Single-wire Digital Interface

Part	Supplier Device Package	Frequency	Voltage - Supply (Max)	Mounting Type	Applications	Voltage - Output [Min]	Voltage - Output [Max]	Topology	Internal Switch(s)	Operating Temperature [Max]	Operating Temperature [Min]	Dimming	Number of Outputs	Type	Current - Output / Channel [custom]	Package / Case
ON Semiconductor FAN5341UMPX	6-UMLP (2x2)	1.2 MHz	5.5 V	Surface Mount	Backlight	6.2 V	17.5 VDC	Step-Up (Boost)		85 °C	-40 °C	Single-Wire	1	DC DC Regulator	25 mA	6-UDFN Exposed Pad

Catalog

LED Driver, Series Boost, with Integrated Schottky Diode and Single-wire Digital Interface

Key Features

• Asynchronous Boost Converter

• Internal Schottky Diode

• Up to 500 mW Output Power

• Drives 3 to 5 LEDs in Series

• 2.7 V to 5.5 V Input Voltage Range

• Single-Wire Digital Control Interface to Set LED Brightness Levels

• 32 Linear Steps

• 1.2 MHz Fixed Switching Frequency

• Soft-Start Capability

• Input Under-Voltage Lockout (UVLO)

• Output Over-Voltage Protection (OVP)

• Short-Circuit Detection

• Thermal Shutdown (TSD) Protection

Description

The FAN5341 is an asynchronous constant-current LED driver capable of efficiently delivering up to 500mW to a string of up to five LEDs in series. Optimized for small formfactor applications, the 1.2MHz fixed switching frequency allows the use of small chip inductors and capacitors.The FAN5341 uses a simple single-wire digital control interface to program the brightness levels of the LEDs in 32 linear steps by applying digital pulses.For safety, the device features integrated over-voltage, overcurrent, short-circuit detection, and thermal-shutdown protection. In addition, input under-voltage lockout protection is triggered if the battery voltage is too low.The FAN5341 is available in a very low profile, small form factor 2mm x 2mm x 0.55mm 6-lead UMLP package that is green and RoHS compliant.