BD9394EFV
面向大屏幕的白色LED驱动器(DC/DC型)
BD9394EFV
面向大屏幕的白色LED驱动器(DC/DC型)
BD9394EFV是白色LED用高效率驱动器，适用于大屏幕液晶驱动器。此IC内置了可向光源（LED串联连接的阵列）提供适当电压的DCDC转换器。BD9394EFV中内置了应对异常状态的几种保护功能。过电压保护（OVP: over voltage protection）、过电流检测（OCP: over current limit protection of DCDC）、短路电路保护（SCP: short circuit protection）、开路保护（open detection of LED string）等。因此，可在更宽的输出电压条件及负载条件下使用。
主要规格
特性：
Topology
Boost
Vin(Min.)[V]
9
Vin(Max.)[V]
35
Total Output Current (Max.)[mA]
150
Number of Outputs
4
Switching Frequency (Max.)[MHz]
0.15
Dimming
PWM
Operating Temperature (Min.)[°C]
-40
Operating Temperature (Max.)[°C]
85
Package Size [mm]
7.8x7.6 (t=1)
特点：
・4ch LED constant current driver and DC/DC converter・Maximum LED Current: 150mA
・LED Feedback Voltage: 0.37V (@NADIM=2.62V), so lower heat. Adjustable Feed Back Voltage by following LED Current setting.
・±2% LED current accuracy (NADIM=2.62V, when each LED is set to 100mA)
・Analog current (Linear) dimming at NADIM pin
・LED pin rating 60V
・Individual detection and individual LED OFF for both open and short circuits
・Built-in ISET pin short-circuit protection circuit
・Set Soft-Start time byexternal capacitor.
・FET’s Gate (N pin) is driven by 5.8V swing
・Built-in Vout discharge circuit for shutdown
・Built-in Vout overvoltage protection (OVP) / reduced voltage protection (SCP) circuit
・Adjustable LED Short Protection Voltage by LSP terminal
・HSOP20, HTSSOP-B24 package with high heat radiation efficiency
