SY7804 (1.5A Synchronous Boost Flash LED driver )
【產品特性】· Input voltage range: 2.5V to 5.5V.
· 4MHz switching frequency to achieve small total solution size.
· > 85% Efficiency in Torch Mode (@ 375 mA) and Flash Mode (@1A to 1.5A).
· 1.5A High-Side Current Source for Single LED.
· Accurate Programmable Flash LED Current from 93 mA to 1.5A.
· Accurate Programmable Torch LED Current from 46.8mA to 375 mA.
· Soft-Start Operation for Battery Protection
· Hardware Strobe/Torch Enable
· Synchronization Input for RF Power Amplifier Pulse Events
· VIN Flash Monitor Optimization
· 400 kHz I2C-Compatible Interface
· Package : CSP 1.615mm×1.665mm - 9, 0.5 mm Pitch
【產品應用】Camera Phone White LED Flash
【文字介紹】The SY7804 is a 4MHz frequency synchronous boost converter plus 1.5A constant current driver for a highcurrent white LED. The high-side current source allows for grounded cathode LED operation providing Flash current up to 1.5A. SY7804 is controlled via an I2Ccompatible interface. It is an ideal power solution for WLED photo flash applications within small PCB layout dimension and used in Lithium-ion / polymer battery operated products. The SY7804 is available in 9 ball CSP package.