IS32LT3126-ZLA3-TR

狀態 Prod
Vdd(V) 5~42
調光 PWM & BCM
通道數 2
文件 Eval Board
IOUT(mA) 150
腳位尺寸(mm) eTSSOP-16
下沉源 Source
腳位/封裝 Z = TSSOP
焊料類型 L = Lead-free (RoHS Compliant)
產品系列 32 = Automotive Analog and Mixed Signal
IC代碼 3126 = 3126
產品類別 LT = Lighting LED Driver
Temperature Grade A3 = Automotive temp. (-40°C to 125°C)
包裝選項 TR = Tape & Reel
外包裝 Tape on Reel

IS32LT3126-ZLA3-TR 特徵

  • Dual channel: each channel can source up to 150mA and the two channels combined to source up to 300mA
  • External resistors individually set source current
  • 4% channel to channel current matching
  • Individually programmable VCC under voltage lockout to match the LED stack for PSM operation Individual PWM dimming
  • Shared fault flag for multiple devices operation
  • Fault protection with flag reporting:
  • - Single LED short (optional to turn off all LEDs) - LED string open/short - OUTx pins short to VCC/GND - ISETx pins open/short - Over temperature current rollback (no reporting) - Thermal shutdown
  • External CSTOR capacitor keeps fault status during start/stop operation
  • eTSSOP-16 package
  • Operating temperature range from -40°C ~ +125°C
  • AEC-Q100 qualification

概觀

The IS32LT3126 is a dual linear programmable current regulator consisting of 2 independently controlled output channels; each channel is capable of sourcing 150mA. Both channels can be combined to provide a total of 300mA. It supports PWM dimming of both channels via power supply modulation (PSM). It also features ENx pins to individually PWM dim and independently adjust the average output current for each channel. The max current for each channel is set with its corresponding external resistor. The UVx pins set the VCC under voltage lockout of each channel to match the LED stack for high side PWM dimming operation. In addition, the IC integrates fault protection for LED open/short, ISETx pin open/short and over temperature condition for robust operation. Detection of these failures is reported by FAULTB pin. When a fault is detected the device will disable itself and output an open drain low signal. Multiple devices can have their FAULTB pins connected to create a “one-fail-all-fail” condition. For multiple LED string applications, the device can detect a single LED short. The single LED short detection is set by a resistor divider on the STx pins. A single LED short failure is reported by the separate FAULTB_S pin. The IS32LT3126 is targeted at the automotive market with end applications to include interior and exterior lighting. For 12V automotive applications the low dropout driver can support one to several LEDs on the output channels. It is offered in a small thermally enhanced eTSSOP-16 package.

 

相關IC编號

IC 編號 庫存數量 可用數量
IS32LT3126