TLE7242-2G数据手册Infineon中文资料规格书

描述 Description

The TLE7242-2G IC is a four channel low-side constant current control pre-driver IC. Each channel can be configured to function either in on/off mode or in constant current mode by setting the appropriate MODE bit in SPI message #7.

特性 Features

·Low side constant current control pre-driver integrated circuit
·Four independent channels
·Output current programmable with 11 bit resolution
·Current range = 0 to 1.2A (typ.) with a 0.2Ohm sense resistor
·Resolution = 0.78125 mA/bit (typ.) with a 0.2Ohm
·sense resistor
· +/- 2% full scale error over temperature when autozero is used
·Programmable PWM frequency via SPI from approximately 50 Hz to 4 KHz (typ.)
· Interface and Control
·32 Bit SPI (Serial Peripheral Interface) - Slave only
·ENABLE pin to disable all channels or freeze all channels
·Active low RESET_B pin resets internal registers to their default state and disables all channels.
·Open drain FAULT pin can be programmed to transition low when various faults are detected.
· 5.0V and 3.3V logic compatible I/O
·Protection
·Over current shutdown - monitored at POSx pin.
·Programmable over current threshold
·Programmable over current delay time
·Programmable over current retry time
·Battery pin (BAT) overvoltage shutdown

应用 Application

·Variable Force Solenoids (e.g. automatic transmission solenoids)
·Other constant current solenoids
·Idle Air Control
·Exhaust Gas Recirculation
·Vapor Management Valve
·Suspension Control