深圳市中立信电子科技有限公司

IS31BL3508A-TTLS2-TR

LED照明驱动器 1.0Mhz Boost Convert 38V int. MOSFET

1.0MHZ BOOST CONVERTER WITH 38V INTERNAL MOSFET SWITCH

GENERAL DESCRIPTION

IS31BL3508A-TTLS2 IS31BL3508A is a boost converter featuring an

integrated MOSFET switch designed for driving series

strings of LED or other device. Input operating voltage

range is 2.7V~5.5V. The device regulates the LED load

current is set using an external, low value sensing

resistor. The device adjusts the PWM duty cycle of the

switch to maintain the voltage at the FB pin at a value

of 0.3V. 

Device open circuit protection is realized using the

overvoltage protection function (OVP). If the output

voltage surpasses the overvoltage threshold, the

overvoltage protection circuit is activated and the

device will stop working.

FEATURES IS31BL3508A-TTLS2

 Supply voltage: 2.7V~5.5V

 Built-in soft start

 Drive series strings of 10 LEDs or 3×8 LEDs

 PWM or DC voltage dimming

 Frequency of PWM is 500Hz ~ 500kHz

 1.0MHz high speed switching frequency

 0.3V feedback voltage

 Integrated high power MOSFET

 Over voltage protection

 -40°C ~ +85°C working temperature range

 TSOT-23-6 and SOT-23-6 package

APPLICATIONS IS31BL3508A-TTLS2

 Small LCD Backlights

 Notebook PC

 GPS