BD18354MUF-M数据手册ROHM中文资料规格书

描述 Description

BD18354MUF-M is a 2ch Constant-Current and Voltage Controller. High side current detection amplifier is built in. PWM dimming duty can be freely set with built-in PWM generation circuit. PWM dimming realizes by driving an external P-ch FET. The BD18354MUF-M can support individual 10-bit analog dimming and 10-bit PWM dimming for LED current by programing the 10-bit register via SPI. BD18354MUF-M can be started up by reading data from the EEPROM by setting the MODE pin without SPI communication. The BD18354MUF-M will support LIMP-HOME mode and STAND-ALONE mode if SPI communication has an error. In the LIMP-HOME mode, it operates by loading the register settings stored in the connected EEPROM. In the STAND-ALONE mode, individual LED current can be set by the external pins and can keep LED current sourcing during applying input power without SPI communication.

特性 Features

• AEC-Q100 Qualified (Grade1)
• Functional Safety Supportive Automotive Products
• PWM Dimming Signal Generator
• Analog Dimming
• Thermal Shutdown (TSD)
• Thermal Sensor Reading
• Serial Peripheral Interface (SPI)
• Inter-Integrated Circuit (I2C)
• LIMP-HOME Mode
• Outputs Abnormal LED Status (FAULT_Bx)
• Spread Spectrum Frequency Modulation