狀態 Prod
Vdd(V) 6~16
調光 Internal PWM
通道數 8
文件 Eval Board
IOUT(mA) 75/CH
腳位尺寸(mm) eTSSOP-16
下沉源 Sink
IC代碼 3180 = 3180
產品系列 32 = Automotive Analog and Mixed Signal
產品類別 LT = Lighting LED Driver
腳位/封裝 Z = TSSOP
焊料類型 L = Lead-free (RoHS Compliant)
Temperature Grade A3 = Automotive temp. (-40°C to 125°C)
包裝選項 TR = Tape & Reel
外包裝 Tape on Reel

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


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.