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Texas Instruments TPS61150ADRCT
- Part No.:
- TPS61150ADRCT
- Manufacturer:
- Texas Instruments
- Category:
- LED Drivers
- Package:
- 10-VFDFN Exposed Pad
- Datasheet:
-
TPS61150ADRCT.pdf
- Description:
- IC LED DRV RGLTR PWM 34MA 10VSON
- Quantity:
- Payment:
- Shipping:
Inventory:2,309
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Product details
Overview
TPS61150ADRCT from Texas Instruments is a dual-output, high-frequency boost WLED driver IC with integrated 0.7A N-channel MOSFET and power diode, operating from 2.5V to 6V input and delivering up to 27V output with 3% current matching between strings. It features 1.2MHz fixed-frequency PWM control, individually programmable current outputs via external ISET resistors, and dedicated SEL1/SEL2 pins for independent or interleaved enable/dimming control - ideal for clamshell phone sub/main display backlighting.
For engineers reviewing the TPS61150ADRCT datasheet, TPS61150ADRCT pinout, TPS61150ADRCT application, or TPS61150ADRCT equivalent, this page delivers verified technical context, exact pin functions, real-world dimming performance (up to 30kHz), overvoltage protection (28V typ), thermal shutdown (160°C), and validated alternative options for WLED backlight systems requiring compact, efficient, dual-string regulation.
Technical Context
The TPS61150ADRCT uses a single-inductor, current-mode boost topology with two independent current-sink feedback loops referenced to 330mV IFB regulation voltage. Its 1.2MHz oscillator enables small external components (10µH inductor, 1µF ceramic caps) while avoiding audible noise. The device dynamically selects the active IFB pin based on voltage demand, ensuring stable regulation even when one string has higher forward voltage.
Each output supports three dimming methods: PWM via SEL pins (with soft-start disable for linearity), analog voltage injection at ISET, or resistor switching. Overcurrent protection adapts to VIN and IOUT voltage, and OVP (28V typ) safeguards against WLED open-circuit failure. Thermal shutdown (160°C) and UVLO (1.8V typ) provide robust system-level protection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.5V to 6.0V - supports single-cell Li-ion, Li-polymer, and 3xAA alkaline battery inputs without pre-regulation. |
| Switching Frequency | 1.2MHz (fixed) - enables use of tiny 10µH inductors and 1µF ceramic capacitors; avoids audible noise band. |
| Integrated Switch | 0.7A, 0.9Ω RDS(ON) N-channel MOSFET - eliminates need for external high-current switch and reduces BOM count. |
| Current Matching | 3% max mismatch at 15mA - ensures uniform brightness across dual WLED strings in main/sub displays. |
| Overvoltage Protection | 28V typical threshold - protects 25V-rated output capacitors and internal 30V FET during WLED disconnection. |
| Efficiency | Up to 83% at 3.6V input, 15V output, 4×WLED per string - minimizes thermal load in space-constrained portable devices. |
| PWM Dimming Frequency | Up to 30kHz - places dimming artifacts beyond human hearing range and improves perceived brightness linearity. |
Pinout & Package
TPS61150ADRCT is housed in a thermally enhanced 10-pin VSON (DRC) package measuring 3mm × 3mm with exposed thermal pad. The QFN-style footprint supports high-power density layout and efficient heat dissipation when soldered to PCB ground plane.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN (Pin 5) | Power Input | Supplies boost stage and internal circuitry; triggers UVLO shutdown below 1.8V to prevent erratic operation. |
| GND (Pin 8) | Ground Reference | Common return for input/output capacitors and thermal pad; must be low-impedance connection to minimize noise. |
| SW (Pin 6) | Switch Node | Connects to inductor and diode anode; carries high di/dt switching current - requires short, wide trace routing. |
| IOUT (Pin 7) | Boost Output | Delivers regulated high-voltage output to WLED anodes; connects directly to cathodes of both current sinks. |
| IFB1 / IFB2 (Pins 10, 1) | Current Feedback Inputs | Reference points for dual current regulation; each sinks current to maintain 330mV at its node via external WLED string. |
| ISET1 / ISET2 (Pins 2, 9) | Current Programming | Set output current magnitude via external resistor: IO = (1.229V / RSET) × KISET (920 typ). |
| SEL1 / SEL2 (Pins 3, 4) | Output Enable/Dimming | Digital control inputs: logic high enables corresponding current sink; PWM signal enables precise brightness control. |
Key Features
| Feature | Design Value |
|---|---|
| Single-inductor dual-output architecture | Reduces solution size by eliminating second inductor and associated magnetics; cuts BOM cost and board area vs. dual-boost designs. |
| Input-to-output isolation during shutdown | UVLO and SEL-driven shutdown fully disconnect WLED strings from input source - critical for battery leakage prevention. |
| Built-in soft start with 16-step current ramp | Prevents inrush current during startup by synchronizing current sink ramp-up with boost converter output rise. |
| Interleaved PWM dimming support | Enables simultaneous but phase-shifted drive of two WLED strings - improves efficiency and reduces output ripple in dual-on mode. |
| Thermal pad with ground connection | Exposed pad soldered to PCB ground plane provides primary thermal path - essential for sustaining >300mW continuous power dissipation. |
Applications
| Clamshell Phone Main/Sub Display | Portable Media Player Backlight |
|---|---|
Use Scenario: Driving separate WLED strings for top (sub) and bottom (main) LCD panels in flip-style mobile phones. IC Role / Device Role / Timing Role: Dual-current boost controller providing independent, matched current regulation and synchronized PWM dimming for two physically separated displays. Use Value: Eliminates need for two discrete boost drivers; maintains <3% brightness mismatch between displays under varying temperature and aging conditions. |
Use Scenario: Powering high-brightness WLED arrays for 3–5 inch TFT-LCD screens in MP3/video players and handheld gaming devices. IC Role / Device Role / Timing Role: High-efficiency (83%) boost driver enabling long battery life while supporting dynamic contrast adjustment via 30kHz PWM dimming. Use Value: Achieves >14WLED total drive capability in media form factor using only one inductor and minimal passive components. |
| Keypad + Display Backlight Combo | Industrial Handheld Terminal UI |
Use Scenario: Simultaneously powering low-current keypad LEDs and high-current main display backlight from shared battery rail. IC Role / Device Role / Timing Role: Programmable dual-output regulator allowing independent current setting (e.g., 5mA for keypad, 20mA for display) and separate enable timing. Use Value: Enables unified power management with no additional DC/DC stages - reduces standby current and simplifies firmware control. |
Use Scenario: Reliable backlighting for ruggedized industrial terminals operating in –40°C to +85°C ambient environments. IC Role / Device Role / Timing Role: Automotive-grade qualified WLED driver with 28V OVP, 160°C thermal shutdown, and UVLO protection for harsh deployment conditions. Use Value: Ensures uninterrupted display operation during voltage transients and thermal stress - validated for extended lifecycle in embedded OEM applications. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-output WLED driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS61150ADRCR | Same die, identical electrical specs; differs only in tape-and-reel packaging (3000 pcs vs. 250 pcs for TPS61150ADRCT). | No functional difference - suitable for high-volume production where reel size impacts SMT line efficiency. | Select TPS61150ADRCR for automated assembly; TPS61150ADRCT preferred for prototyping and low-volume builds. |
| TPS61160DRVR | Single-output 40V boost WLED driver with 1.2MHz switching, but lacks dual-current capability and IFB1/IFB2 architecture. | Requires two ICs to match dual-string functionality; increases board area and component count. | Only viable if application needs only one WLED string or can accept separate drivers with external current matching. |
Compared with TPS61150ADRCT, TPS61150ADRCR offers identical performance in bulk packaging, while TPS61160DRVR sacrifices dual-output integration for higher output voltage headroom - making TPS61150ADRCT the optimal choice for space-constrained, dual-display portable systems requiring matched current regulation.
Availability
TPS61150ADRCT is available at Aetrix Electronics and suitable for clamshell phone backlighting, portable media player displays, keypad+LCD combo lighting, and industrial handheld terminal UIs requiring stable component supply, long-lifecycle assurance, and RoHS-compliant sourcing.
Supply support for TPS61150ADRCT includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and power management technologies, with decades of expertise in high-efficiency DC/DC conversion and LED driver innovation.
The TPS61150A product line was designed specifically for ultra-compact, high-brightness WLED backlighting in battery-powered portable electronics - emphasizing integration (MOSFET + diode), thermal efficiency, and dual-string precision without sacrificing reliability.
FAQ
What is the maximum number of WLEDs the TPS61150ADRCT can drive?
The TPS61150ADRCT can drive up to 14 WLEDs total - seven per string - when configured for media-form-factor large displays, assuming typical 3.0V forward voltage per WLED and 27V maximum output. Real-world capacity depends on input voltage, WLED VF distribution, and thermal design; datasheet Figure 7 confirms >14WLED operation at 3.6V input with both outputs enabled.
Does the TPS61150ADRCT support analog dimming in addition to PWM?
Yes, the TPS61150ADRCT supports analog dimming via DC voltage injection at the ISET1 or ISET2 pins using an external resistor divider or filtered PWM signal. Equation (5) in the datasheet defines output current as IWLED = KISET × 1.229V / RISET, where applying a variable DC voltage to the ISET node directly modulates current without PWM frequency constraints.
How does the TPS61150ADRCT handle WLED open-circuit conditions?
The TPS61150ADRCT incorporates 28V typical overvoltage protection (OVP) that disables the boost switch immediately when IOUT exceeds the threshold - preventing capacitor overvoltage and internal FET breakdown. Recovery is automatic once output voltage falls below OVP hysteresis (550mV), ensuring safe re-engagement after fault clearance.
Can the TPS61150ADRCT operate with only one WLED string enabled?
Yes, the TPS61150ADRCT fully supports single-string operation: pulling SEL1 low disables IFB1 regulation while SEL2 high enables IFB2, and vice versa. In single-output mode, the boost converter regulates solely to the active IFB pin, delivering full efficiency and current accuracy without penalty - confirmed in datasheet Figures 3–6.
What is the role of the exposed thermal pad on the TPS61150ADRCT package?
The exposed thermal pad on the TPS61150ADRCT's 3mm × 3mm VSON package must be soldered to the PCB ground plane to serve as the primary thermal conduction path. With RθJA = 48.7°C/W on a 4-layer board with vias, it enables sustained 821mW power dissipation at 85°C ambient - critical for maintaining 125°C junction temperature compliance during continuous dual-output operation.
TPS61150ADRCT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 10-VFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- DC DC Regulator
- Topology:
- Step-Up (Boost)
- Internal Switch(s):
- Yes
- Number of Outputs:
- 2
- Voltage - Supply (Min):
- 2.5V
- Voltage - Supply (Max):
- 6V
- Voltage - Output:
- 27V
- Current - Output / Channel:
- 34mA
- Frequency:
- 1.2MHz
- Dimming:
- PWM
- Applications:
- Backlight
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-VSON (3x3)
TPS61150ADRCT FAQ
1.How can I place an order for TPS61150ADRCT through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS61150ADRCT on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for TPS61150ADRCT reliable?
The price and inventory of TPS61150ADRCT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS61150ADRCT is usually 5 days.
3.What payment methods are accepted for TPS61150ADRCT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS61150ADRCT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS61150ADRCT?
TPS61150ADRCT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS61150ADRCT order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for TPS61150ADRCT?
For technical support, including TPS61150ADRCT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS61150ADRCT requirements.
6.How does Aetrix verify that TPS61150ADRCT is sourced from the original manufacturer or authorized distributors?
All TPS61150ADRCT products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that TPS61150ADRCT meets industry standards.
7.What is the process for return or replacement of TPS61150ADRCT?
All TPS61150ADRCT units undergo pre-shipment inspection (PSI). If there is an issue with TPS61150ADRCT, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The TPS61150ADRCT part is unused and in its original packaging.
Return procedure for TPS61150ADRCT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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