BP1601 – Step-Up Constant Current LED Driver

Part number : BP1601

Functions : Step-Up Constant Current LED Driver, This is Semiconductor.

Manufacturer : BPS

Image :

BP1601 Datasheet PDF

The texts in the PDF file :

Description

BP1601 is a step-up DC/DC converter designed to drive high brightness LED from 4.5V to 24VDC input voltage . Typically in 12VDC input voltage, up to seven 1W LED strings is able to be drived. BP1601 works in current mode to control LED current, it set the LED current by sense resistor, this low-side sensing strategy is used to minimize the power dissipation and improve system efficiency. BP1601 detects the OV pin voltage to provide open circuit protection. The BP1601 includes under-voltage lockout, current limiting and thermal overload protection preventing damage in the event of an output overload. BP1601 is assembled in SOP-8PP package, which provides excellent heat dissipation and thermal performance. Applications    Solar LED lighting Portable LED lighting LCD LED backlight

Features

           4.5V~24V input voltage range Up to seven 1W LED strings is drived when VIN=12V Higher than 90% efficiency Less than 1uA MOSFET leakage current 200mV current sense voltage 1A current limit Soft start Input under-voltage lockout Output over-voltage protection Internal over-temperature protection PWM and analog Dimming Typical Application Figure 1 typical application circuit BP1601_DS_EN V1.0 Jul 2010 www.bpsemi.com Page 1 Free Datasheet http:// Pin configuration Pin

Description

Pin No. 1 2 3 Pin Name GNDP VIN OV

Description

Power ground Power supply of the chip, connect a bypass capacitor to ground as close as possible Output voltage detect. Protect the chip and system while LED is open. PWM and analog dimming input. While connecting to logic” high” , chip is enabled; While connecting to logic” low” more than 3ms,chip is disabled; Be logic low while left floating. The PWM dimming signal frequency should be higher than 20KHz. Signal ground Output current Feedback. Set the LED current by detecting the voltage in the sense resistor. The voltage threshold is 200mV Not connect Drain of [ … ]

BP1601 PDF File