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TPS61042DRBT

Led Driver, 1 Output, Boost (Step Up), 1.8V-6V in, 1MHz switch, 28V/30mA out, QFN-8

TPS61042DRBT - Led Driver, 1 Output, Boost (Step Up), 1.8V-6V in, 1MHz switch, 28V/30mA out, QFN-8

Image is for illustrative purposes only. Please refer to product description.

Manufacturer Part No:
TPS61042DRBT
Order Code:
3006045

Product Information

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:
Boost (Step Up)

:
1.8V

:
6V

:
28V

:
60mA

:
1MHz

:
1Outputs

:
SMD

:
SON

:
8Pins

:
-40°C

:
85°C

:
-

:
-

:
MSL 2 - 1 year
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Technical Docs (0)

Product Overview

The TPS61042DRBT is a high frequency Boost Converter with constant current output that drives white LEDs or similar. The LED current is set with the external sense resistor (RS) and is directly regulated by the feedback pin (FB) that regulates the voltage across the sense resistor RS to 252mV (typical). To control LED brightness, the LED current can be pulsed by applying a PWM (pulse width modulated) signal with a frequency range of 100Hz to 50kHz to the control pin (CTRL). To allow higher flexibility, the device can be configured where the brightness can be controlled by an analogue signal as well, as described in the application information section. To avoid possible leakage currents through the LEDs during shutdown, the control pin (CTRL) disables the device and disconnects the LEDs from ground. For maximum safety during operation, the output has integrated over-voltage protection that prevents damage to the device in case of a high impedance output (faulty LED).
  • Current source with over-voltage protection
  • Internal 30V switch
  • Up to 85% efficiency
  • Precise brightness control using PWM signal or analogue signal
  • Operates with small-output capacitors down to 100nF
  • Disconnects LEDs during shutdown
  • 500mA Internal power MOSFET switch
  • 38µA Typical no load quiescent current
  • 0.1µA Typical shutdown current
  • Green product and no Sb/Br

Applications

Power Management, Consumer Electronics

Packaging type Cut Tape

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