通道數 8
電壓 - 電源 6~16
電流 - 輸出/通道 (mA) 75/CH
Sink Source Sink
調光 Internal PWM
腳位/封裝 eTSSOP-16
文件 Eval Board
狀態 Prod
產品系列 32 = 汽車模擬和混合信號
產品類別 LT = 照明LED驅動器
IC代碼 3180
焊接 L = 無鉛
温規 A3 = 車規 (-40C to +125°C)
外包裝 卷轴包
相關IC编號

IS32LT3180-ZLA3-TR 特徵

  • Output current programmable from 10mA to
  • 75mA Tail duty cycle programmable from 1% to 95% Linear voltage regulator to minimize consumption in the device Low dropout voltage of [email protected] Slew rate control on each output for better EMI performance PWM logic level input selects between full brightness and PWM dimming levels FAULT reporting LED open/short circuit detection Input overvoltage protection STOP pin overcurrent protection Thermal rollback of output current
  • Withstand 50V load dump
  • Rear Combinational Lamp (RCL)
  • Center High Mount Stop Light (CHMSL)
  • Daytime running lamp
  • Fog lamps

概觀

The IS32LT3180 is an eight channel linear current regulator for automotive rear tail light applications such as RCL (Rear Combination Lamps) and CHMSL (Center High Mounted Stop Lamps). It is fully programmable with two LED brightness levels for the different intensity requirements of “stop” bright (DC mode) and “tail” dim (PWM mode). A logic level at the PWM pin is used to select between the tail and stop output conditions. The stop condition provides the highest intensity output, while the tail condition utilizes an internally generated PWM signal to reduce the intensity of the LEDs’ light output. The sink current at the OUTx pins is easily set with a single resistor at the STOP pin. A second resistor at the TAIL pin sets the duty cycle of the internal PWM oscillator for dimming (less bright) the LED output when operating in the tail condition. An external FET controller is provided to maintain a constant headroom and power dissipation for the LED driver under wide varying supply voltages. For proper operation without Fault trigger, the use of external FET is recommended. The IS32LT3180 is offered in an eTSSOP-16 package.