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TLV431BFTA , 1.24V Cost effective shunt regulator
TLV431BFTA , 1.24V Cost effective shunt regulator
TLV431BFTA , 1.24V Cost effective shunt regulator
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TL4242DRJR
Adjustable LED Driver
TL4242 PWM
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TL4242SLVS641B– APRIL 2008–REVISED MARCH 2015
TL4242 500-mA, Adjustable, Constant-Current LED Driver Features 3 DescriptionThe TL4242 device is an integrated, adjustable, Adjustable Constant Current upto 500 mA (±5%) constant-current source that can drive loads upto• PWM Brightness Regulation 500 mA. The output current level can be adjusted• Wide Input Voltage Rangeupto42V through an external resistor. The deviceis designed supply high-power LEDs. The TL4242is provided• Low Drop Voltage in the DRJ (WSON) package. Protection circuits• Open-Load Detection prevent damageto the devicein caseof overload,• Overtemperature Protection short circuit, reverse polarity, and overtemperature.
The connected LEDs are protected against reverse• Short-Circuit Proof
polarityas wellas excess voltages upto45V.• Reverse-Polarity Proof
The integrated PWM inputof the TL4242 permits• Wide Temperature Range: –40°Cto 150°C
LED brightness regulation by pulse-width modulation
(PWM). Dueto the high input impedanceof the PWM
2 Applications input, the LED driver can be operatedasa protected• Signage high-side switch. Industrial Lighting The TL4242 is characterized for operation from• Printers –40°Cto 150°C.
Device Information(1)(1) Forall available packages, see the orderable addendumat
the endofthe data sheet.
Simplified Schematic
