IS32LT3124A

狀態 Sample
Vdd(V) 5~42
調光 PWM & BCM
通道數 4
文件
IOUT(mA) 150
腳位尺寸(mm) eTSSOP-16
下沉源 Source
IC代碼 3124 = 3124
產品系列 32 = Automotive Analog and Mixed Signal
產品類別 LT = Lighting LED Driver
焊料類型 blank = Sn/Pb
包裝選項 blank = Tray or Tube

IS32LT3124A 特徵

  • 5.0V to 28V input supply voltage range
  • - Withstand 42V load dump the reliability, GENERAL DESCRIPTION The IS32LT3124 is a linear programmable current regulator consisting of 4 output channels capable of up to 150mA each. Individual external resistors set the maximum current level for each channel. The outputs can be combined to provide a higher current drive capability up to 600mA (Max.). The IS32LT3124 features Dynamic Headroom Control (DHC) with an optional external PMOS FET to minimize IC thermal stress when the supply voltage exceeds the LED string forward voltage. It includes two modes for different output power: Shunt Regulator mode and Series Regulator mode. It can operate with power supply modulation (PSM) for applications requiring dimming without use of the EN pin. For added system IS32LT3124 integrates fault detection circuitry for open/short circuit and over temperature conditions. The fault pins (FLTB) can all be tied together to disable the device and other IS32LT3124 devices on the same parallel circuit. To handle all these different fault detection and reporting features, the IS32LT3124 has six different versions: A, B, C, D, E and F. All of them can support the above features. See table 1 for the major difference. fault condition occurs, all output currents will be disabled. In IS32LT3124B/C/E/F, individual ISET pin for each LED channel is redefined as individual PWM dimming control, thus ISET open detection function is removed. The EN pin of IS32LT3124B/C/E/F is featured as the enable signal of the internal fault reporting block. See Table 4 for complete fault listing. The IS32LT3124 is targeted at the automotive market such as interior accent lighting and exterior tail lighting. It is offered in a thermally enhanced eTSSOP-16 package.
  • Automotive LED driver
  • RGBW automotive ambient lighting
  • Tail light
  • Turn light
  • Daytime running light IS32LT3124A/B/D/E, if any In
  • Four output channels can source up to 150mA each
  • - Four current set resistors - ±5% output current accuracy - Low dropout voltage of 1V (Max.) at 100mA - Combined for higher current capability with same current accuracy
  • PWM dimming and shutdown control input
  • - 100Hz~300Hz power supply modulation (PSM) - 100Hz~1kHz individual dimming via resistors of ISETx pins (IS32LT3124B/C/E/F only)
  • Optional Dynamic Headroom Control (DHC) with an external PMOS FET to minimize IC thermal stress
  • - Shunt regulator mode for heavy load - Series regulator mode for light load
  • Additional external UVLO (Under Voltage Lockout via EN pin is programmable Threshold) (IS32LT3124A/D only)
  • Fault protection and reporting all fault Fault output disables reporting condition
  • - Externally enable/disable (IS32LT3124B/C/E/F only) - Programmable fault reporting output delay time - (IS32LT3124A/B/D/E only) - Parallel fault connection (one-fail-all-fail) - LED string open/short - Single LED short (Conditional, IS32LT3124B/C/D only) - ISET pin short - ISET pin open (IS32LT3124A/D only) - Over temperature
  • AEC-Q100 Qualified

概觀

The IS32LT3124 is a linear programmable current regulator consisting of 4 output channels capable of up to 150mA each. Individual external resistors set the maximum current level for each channel. The outputs can be combined to provide a higher current drive capability up to 600mA (Max.). The IS32LT3124 features Dynamic Headroom Control (DHC) with an optional external PMOS FET to minimize IC thermal stress when the supply voltage exceeds the LED string forward voltage. It includes two modes for different output power: Shunt Regulator mode and Series Regulator mode. It can operate with power supply modulation (PSM) for applications requiring dimming without use of the EN pin. For added system IS32LT3124 integrates fault detection circuitry for open/short circuit and over temperature conditions. The fault pins (FLTB) can all be tied together to disable the device and other IS32LT3124 devices on the same parallel circuit. To handle all these different fault detection and reporting features, the IS32LT3124 has six different versions: A, B, C, D, E and F. All of them can support the above features. See table 1 for the major difference. fault condition occurs, all output currents will be disabled. In IS32LT3124B/C/E/F, individual ISET pin for each LED channel is redefined as individual PWM dimming control, thus ISET open detection function is removed. The EN pin of IS32LT3124B/C/E/F is featured as the enable signal of the internal fault reporting block. See Table 4 for complete fault listing. The IS32LT3124 is targeted at the automotive market such as interior accent lighting and exterior tail lighting. It is offered in a thermally enhanced eTSSOP-16 package. APPLICATIONS , Automotive LED driver , RGBW automotive ambient lighting , Tail light , Turn light , Daytime running light.

 

相關IC编號

IS32LT3124A-TR IS32LT3124C-ZLA3-TR IS32LT3124DPSM-TR IS32LT3124F-TR
IS32LT3124A-ZLA3-TR IS32LT3124CPSM IS32LT3124E IS32LT3124F-ZLA3-TR
IS32LT3124APSM IS32LT3124CPSM-TR IS32LT3124E-TR IS32LT3124FPSM
IS32LT3124APSM-TR IS32LT3124D IS32LT3124E-ZLA3-TR IS32LT3124FPSM-TR
IS32LT3124B-ZLA3-TR IS32LT3124D-TR IS32LT3124EPSM
IS32LT3124BPSM IS32LT3124D-ZLA3-TR IS32LT3124EPSM-TR
IS32LT3124BPSM-TR IS32LT3124DPSM IS32LT3124F