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TI TPS61042DRBR product image
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TI TPS61042DRBRRoHS

Manufacturer
TI
MPN
TPS61042DRBR
LCSC Part #
C91304
Packaging
DFN-8-EP(3x3)
Customer #
Key Attributes
Constant Current LED Driver
Datasheetpdf iconTI TPS61042DRBR
In-Stock: 2,429
2,429 In stock, ships now
Add to BOM List
QtyUnit PriceTotal Amount
1+$ 1.0742$ 1.07
10+$ 0.8633$ 8.63
30+$ 0.7578$ 22.73
100+$ 0.654$ 65.40
500+$ 0.5485$ 274.25
1,000+$ 0.5177$ 517.70
Standard Packaging3000/Full Reel
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Products Specifications

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TypeDescription
CategoryIntegrated Circuits (ICs)/Power Management (PMIC)/LED Drivers ICs
ManufacturerTI
PackagingDFN-8-EP(3x3)
Output Voltage1.8V~27.5V
FeaturesOver Voltage Protection;Built-in soft-start;Over-Temperature Protection (OTP)
Frequency - Switching1MHz
Switch Tube (Built-In/External)Built-in
Voltage - Input(AC)-
Operating temperature-40℃~+125℃
TopologyBoost
Number of Channels1
TypeDC-DC
Output Current60mA
Constant Current Accuracy3%
Voltage - Input(DC)1.8V~6V
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Additional Information

TypeDetails
Minimum1
Multiple1
Standard Packaging3000
Sales UnitPiece

Introduction

AI Translation

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 (R_S) and is directly regulated by the feedback pin (FB) that regulates the voltage across the sense resistor R_S 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).

Features

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

Applications

AI Translation
  • White LED Supply for Backlight/Sidelight Displays
  • PDA, Pocket PC, Smart Phones
  • Handheld Devices
  • Cellular Phones