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TL4242TDRJRQ1

Automotive adjustable LED driver

Manufacturer:

TI
Mfr.Part #:

TL4242TDRJRQ1
Datasheet:

TL4242TDRJRQ1 Datasheet (PDF)
Number of channels:

1
Topology:

Current Source
Rating:

Automotive
Operating temperature range (°C):

-40 to 105, -40 to 125
EDA/CAD Models:

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TL4242TDRJRQ1 General Description

The TL4242-Q1 device is an integrated adjustable constant-current source, driving loads up to 500 mA. One can adjust the output current level through an external resistor. The device design is for supplying high-power LEDs (for example, OSRAM Dragon LA W57B) under the severe conditions of automotive applications, resulting in constant brightness and extended LED lifetime. The device comes in the DRJ (WSON) and KTT (TO-263) package. Protection circuits prevent damage to the device in case of overload, short-circuit, reverse polarity, and overheat. The device provides the connected LEDs protection against reverse polarity as well as excess voltages up to 45 V.

The integrated PWM input of the TL4242-Q1 device permits LED brightness regulation by pulse-width modulation (PWM). The high-input impedance of the PWM input allows operating the LED driver as a protected high-side switch.

Key Features

Qualified for Automotive Applications
AEC-Q100 Test Guidance With the Following Results:
- Device Temperature Grade 2: –40°C to 105°C Ambient Operating Temperature Range for WSON package
- Device Temperature Grade 1: –40°C to 125°C Ambient Operating Temperature Range for TO-263 package
- Device HBM ESD Classification Level H1C
- Device CDM ESD Classification Level C3B
Adjustable Constant Current up to 500 mA (±5%)
Wide Input-Voltage Range up to 42 V
Low Dropout Voltage
Open-Load Detection
Overtemperature Protection
Short-Circuit Proof
Reverse-Polarity Proof

Specifications

Number of channels	1	Topology	Current Source
Rating	Automotive	Operating temperature range (°C)	-40 to 105, -40 to 125
Vin (min) (V)	4.5	Vin (max) (V)	42
Vout (min) (V)	0	Vout (max) (V)	40
Iout (max) (A)	0.5	Iq (typ) (mA)	12
Features	LED Open Detection, Thermal shutdown