TPS61042DRBT Part Information

Details for TPS61042DRBT by Texas Instruments

Electronic & Electrical Components > Semiconductors - ICs > Driver & Interface ICs

Part Description

The TPS61042 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 252 mV (typ). To control LED brightness, the LED current can be pulsed by applying a PWM (pulse width modulated) signal with a frequency range of 100 Hz to 50 kHz to the control pin (CTRL). To allow higher flexibility, the device can be configured where the brightness can be controlled by an analog 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 overvoltage protection that prevents damage to the device in case of a high impedance output (e.g. faulty LED).

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Part Features

  • Available in a Small 3 mm u00d7 3 mm QFN Package
  • Current Source With Overvoltage Protection
  • Disconnects LEDs During Shutdown
  • Input Voltage Range: 1.8 V to 6 V
  • Internal 30 V Switch
  • Internal Power MOSFET Switch: 500 mA
  • No Load Quiescent Current: 38 u00b5A Typ
  • Operates With Small Output Capacitors Down to 100 nF
  • Precise Brightness Control Using PWM Signal or Analog Signal
  • Shutdown Current: 0.1 u00b5A Typ
  • Switching Frequency: Up to 1 MHz
  • Up to 85% Efficiency

Part Specifications

Device Topology Boost (Step Up)
Input Voltage Min 1.8V
Input Voltage Max 6V
Output Voltage Max 28V
Output Current Max 60mA
Switching Frequency 1MHz
No. of Outputs 1Outputs
IC Mounting SMD
Driver Case Style SON
No. of Pins 8Pins
Operating Temperature Min -40°C
Operating Temperature Max 85°C
Product Range -
Automotive Qualification Standard -
RoHS Phthalates Compliant Yes
MSL MSL 2 - 1 year
SVHC No SVHC (27-Jun-2018)
Adjustable Output Voltage Max 27.5V
Base Number 61042
Data / Control Interface Serial
Device Type LED
Dimming Control Type PWM
Efficiency 85%
Input Voltage 1.8V to 6V
LED Display Type Discrete LED
LED Driver Application Backlighting Sidelight Display
Operating Temperature Range -40°C to +85°C
Output Current 30mA
Output Voltage 28V
Switch Output Current Isw Max 0.5A
Termination Type Surface Mount Device
Topology Boost (Step Up)
Voltage Regulator Type Constant Current LED Driver
RoHS Compliant

Alternative Part Descriptions

  • CONVERTER, BOOST FOR WHITE LED, SMD; Device Topology:Boost (Step Up); Input Voltage Min:1.8V; Input Voltage Max:6V; Output Voltage Max:28V; Output Current Max:60mA; Switching Frequency:1MHz; No. of Outputs:1Outputs; IC Mounting:SMD; RoHS Compliant: Yes | Newark Electronics
  • 30-V, 500-mA switch boost converter in QFN-8 for white LED applications | Texas Instruments

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