The TL4242 device is an integrated, adjustable, constant-current source that can drive loads up to 500 mA. The output current level can be adjusted through an external resistor. The device is designed to supply high-power LEDs. The TL4242 is provided in the DRJ (WSON) package. Protection circuits prevent damage to the device in case of overload, short circuit, reverse polarity, and overtemperature. The connected LEDs are protected against reverse polarity as well as excess voltages up to 45 V.

The integrated PWM input of the TL4242 permits LED brightness regulation by pulse-width modulation (PWM). Due to the high input impedance of the PWM input, the LED driver can be operated as a protected high-side switch.

The TL4242 is characterized for operation from –40°C to 150°C.

• Adjustable Constant Current upto500mA(±5%)
• PWM Brightness Regulation
• Wide Input Voltage Range up to 42V
• Low Drop Voltage
• Open-Load Detection
• Overtemperature Protection
• Short-Circuit Proof
• Reverse-Polarity Proof
• Wide Temperature Range: –40°C to 150°C

• Number of channels (#)
• 1
• Topology
• Current Source
• Rating
• Catalog
• Operating temperature range (C)
• -40 to 125
• Vin (Min) (V)
• 4.5
• Vin (Max) (V)
• 40
• Vout (Min) (V)
• -1
• Vout (Max) (V)
• 41
• Iout (Max) (A)
• 0.5
• Iq (Typ) (mA)
• 12
• Features
• Enable/Shutdown, Fault Detection, Thermal Shutdown

TL4242的完整型号有：TL4242DRJR，以下是这些产品的关键参数及官网采购报价：

TL4242DRJR，工作温度：-40 to 125，封装：SON (DRJ)-8，包装数量MPQ：3000个，MSL 等级/回流焊峰值温度：Level-3-260C-168 HR，引脚镀层/焊球材料：NIPDAU，TI官网TL4242DRJR的批量USD价格：.362（1000+）

TL4242 TINA-TI Spice Model

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