TPS61042DRBT Texas Instruments Integrated Circuit (Other) In Stock
TPS61042DRBT is a boost converter LED driver with a 30 V switch voltage and 500 mA switch current. It features adjustable LED current control and PWM dimming. Available in SOT-23 package with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Other
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- TPS61042DRBT Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.6560(MOQ 1)
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 30 V switch voltage and 500 mA switch current for driving high-brightness LEDs in boost topology
- Adjustable LED current via external resistor enables flexible brightness control across single-channel designs
- Integrated PWM dimming support with wide duty-cycle range for smooth flicker-free LED intensity control
Applications
The TPS61042DRBT is well-suited for portable LCD backlighting applications in smartphones, tablets, and handheld devices powered by single-cell Li-Ion batteries. It also supports white-LED flashlights, handheld scanners, and portable instrumentation requiring a compact boost driver. Its 30 V output capability makes it effective for driving white LED strings of up to 5 series-connected LEDs.
Specifications
| Pbfree Code | Yes |
| YTEOL | 15 |
| Input Characteristics | STANDARD |
| Interface IC Type | LED DISPLAY DRIVER |
| JESD-30 Code | S-PDSO-N8 |
| JESD-609 Code | e4 |
| Multiplexed Display Capability | NO |
| Number of Channels | 1 |
| Number of Functions | 1 |
| Number of Segments | 1 |
| Output Characteristics | CONSTANT-CURRENT |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOLCC8,.12,25 |
| Package Shape | SQUARE |
| Package Style | SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Supply Current-Max | 65mA |
| Supply Voltage-Max | 6V |
| Supply Voltage-Min | 1.8V |
| Supply Voltage-Nom | 3.6V |
| Surface Mount | YES |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | Nickel/Palladium/Gold (Ni/Pd/Au) |
| Terminal Form | NO LEAD |
| Terminal Pitch | 0.65mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| fmax-Min | 1MHz |
| Package | Other |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 2 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.90 |
| Country of Origin | Mainland China, Malaysia |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the maximum switch voltage and current rating of the TPS61042DRBT?
The TPS61042DRBT supports a maximum switch voltage of 30 V and a maximum switch current of 500 mA. These ratings make it suitable for driving series LED strings requiring up to 30 V forward voltage, covering configurations of up to 5 white LEDs in series from a single-cell Li-Ion input of 2.7 V to 4.2 V.
Which portable backlight applications are best served by TPS61042DRBT?
This device is ideal for LCD backlight drivers in smartphones, e-readers, and portable medical equipment where a compact boost converter operating from 2.7 V to 5.5 V is needed. Its single-channel architecture and SOT-23 package suit constrained PCB layouts under 10 mm² while delivering regulated LED currents up to approximately 80 mA at full duty cycle.
How does TPS61042DRBT achieve PWM dimming and what frequency is supported?
TPS61042DRBT supports direct PWM dimming via the CTRL pin, allowing duty cycles from below 1% to 100% for smooth brightness control. Supported PWM frequencies typically range from 100 Hz to 50 kHz. This enables flicker-free dimming at 8-bit resolution steps when driven from a microcontroller GPIO at 3.3 V or 5 V logic levels.
When is TPS61042DRBT a cost-effective alternative to a full WLED driver IC?
TPS61042DRBT provides a lower-cost solution for single-channel, 1–5 LED string applications compared to multi-channel WLED drivers such as TPS61195. With only external resistors, an inductor, and a capacitor needed, the BOM count stays under 8 components. Its VOUT regulation accuracy of ±2% eliminates the need for a separate feedback circuit in most single-string designs.
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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $1.4058 | $1.41 |
| 10+ | $1.3880 | $13.88 |
| 16+ | $1.3800 | $22.08 |
| 25+ | $1.2632 | $31.58 |
| 44+ | $1.1715 | $51.55 |
| 60+ | $0.6560 | $39.36 |
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