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Texas Instruments TPS61150ADRCTG4
- Part No.:
- TPS61150ADRCTG4
- Manufacturer:
- Texas Instruments
- Category:
- LED Drivers
- Package:
- 10-VFDFN Exposed Pad
- Datasheet:
-
TPS61150ADRCTG4.pdf
- Description:
- IC LED DRV RGLTR PWM 34MA 10VSON
- Quantity:
- Payment:
- Shipping:
Inventory:4,839
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Product details
Overview
TPS61150ADRCTG4 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 individually programmable constant current outputs up to 34mA per string with 3% matching at 15mA - designed for sub/main display backlighting in clamshell phones and portable media devices.
For engineers reviewing the TPS61150ADRCTG4 datasheet, TPS61150ADRCTG4 pinout, TPS61150ADRCTG4 application, or TPS61150ADRCTG4 equivalent, key selection considerations include its 1.2MHz fixed-frequency PWM control, single-inductor dual-output architecture, 27V overvoltage protection, thermal shutdown at 160°C, and compatibility with 3mm × 3mm QFN-10 (DRC) packaging for space-constrained portable designs.
Technical Context
The TPS61150ADRCTG4 employs current-mode PWM control with a fixed 1.2MHz switching frequency to minimize output ripple and avoid audible noise. Its dual-current-sink architecture uses dedicated IFB1/IFB2 feedback pins regulated to 330mV (typ), enabling independent current programming via ISET1/ISET2 resistors and dynamic feedback path handover between outputs during simultaneous operation.
It integrates a 0.7A, 0.9Ω (typ) N-channel MOSFET switch and built-in power diode, eliminating external power components. Input-to-output isolation is maintained during shutdown (ISD = 1.9µA typ), and soft-start is implemented via 16-step current ramping (64 clock cycles/step) to limit inrush current during startup.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.5V to 6.0V - supports single-cell Li-ion, Li-polymer, and 3×AA/AAA battery inputs without pre-regulation. |
| Switching Frequency | 1.2MHz (fixed) - enables use of small 10µH inductors and 1µF ceramic capacitors while avoiding audible noise bands. |
| Max Output Current | 34mA per string - limited by internal current sink capability; ensures stable regulation even under mismatched LED forward voltages. |
| Current Matching | ≤3% at 15mA - critical for uniform brightness across dual WLED strings in clamshell phone displays. |
| OVP Threshold | 27V (typ) - protects 25V-rated output capacitors and internal 30V FET from overvoltage during open-circuit WLED conditions. |
| Quiescent Current | 2mA (typ) - minimizes standby power loss in always-on backlight systems. |
| Thermal Shutdown | 160°C (typ) with 15°C hysteresis - provides robust protection during sustained high-power operation in compact enclosures. |
Pinout & Package
TPS61150ADRCTG4 is housed in a thermally enhanced 3mm × 3mm, 10-pin VSON (DRC) package with exposed thermal pad soldered to analog ground for optimal power dissipation. The pinout supports compact layout with VIN and SW on opposite edges for direct inductor placement.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN (Pin 5) | Power input | Supplies boost stage and internal circuitry; triggers UVLO shutdown below 1.65V (typ) for system-level brownout protection. |
| GND (Pin 8) | Ground reference | Analog/digital common return; must be connected near input/output capacitors to minimize noise coupling and EMI. |
| 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 | High-voltage output node feeding WLED anodes; rated for up to 27V - must be decoupled with low-ESR ceramic capacitor. |
| IFB1 / IFB2 (Pins 10, 1) | Current feedback inputs | Regulated to 330mV (typ); each controls one WLED string's current sink - enables independent dimming and fault detection. |
| ISET1 / ISET2 (Pins 2, 9) | Current programming | Resistor-connected pins setting output current via KISET multiplier (920 typ); allows precise calibration without trimming. |
| SEL1 / SEL2 (Pins 3, 4) | Output enable/dimming | Digital control inputs supporting PWM dimming up to 30kHz; internal 700kΩ pull-down ensures safe default-off state. |
Key Features
| Feature | Design Value |
|---|---|
| Single-inductor dual-output topology | Reduces BOM count and PCB area vs. two separate boost converters - ideal for space-limited clamshell phone hinge regions. |
| Integrated 0.7A MOSFET + power diode | Eliminates need for external power semiconductors, simplifying layout and improving reliability in portable applications. |
| Input-to-output isolation in shutdown | Ensures zero current flow from battery to WLEDs when disabled - critical for battery life in standby mode. |
| Programmable soft-start | 16-step current ramp prevents inrush into WLED strings, avoiding mechanical stress on LED bond wires and driver transients. |
| Interleaved PWM dimming support | Enables complementary SEL1/SEL2 drive for improved efficiency in dual-string operation - reduces power loss in current sinks. |
Applications
| Clamshell Phone Sub/Main Display Backlight | Portable Media Device Keypad + LCD Backlight |
|---|---|
|
Use Scenario: Driving separate WLED strings for inner and outer displays in flip-style mobile phones with shared battery supply. IC Role / Device Role / Timing Role: Dual constant-current regulator providing independent brightness control and synchronized startup for both displays. Use Value: 3% current matching ensures consistent luminance across displays; 1.2MHz switching avoids audible coil whine during call mode. |
Use Scenario: Simultaneously powering keypad LEDs and main LCD backlight in handheld gaming or PDA devices. IC Role / Device Role / Timing Role: Single-chip solution managing two distinct lighting zones with interleaved PWM dimming to reduce thermal load. Use Value: Eliminates need for second boost converter - saves 25mm² PCB area and reduces component count by ≥7 parts. |
| Media Form Factor Large Display (up to 14 WLEDs) | Low-Power Portable Equipment Backlighting |
|
Use Scenario: Driving high-brightness WLED arrays in portable media players requiring >100 cd/m² luminance. IC Role / Device Role / Timing Role: High-efficiency (up to 83%) boost controller delivering up to 14 WLEDs using single inductor and compact passive set. Use Value: 27V OVP protects against open-circuit failure in long LED chains; thermal shutdown prevents overheating in sealed enclosures. |
Use Scenario: Battery-powered barcode scanners, medical handhelds, or industrial data collectors needing reliable backlight with minimal quiescent draw. IC Role / Device Role / Timing Role: Low-IQ (2mA typ) WLED driver supporting deep-sleep modes and fast wake-up via SEL pin control. Use Value: 1.9µA shutdown current extends battery runtime; UVLO prevents erratic behavior during battery depletion. |
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 |
|---|---|---|---|
| TPS61160DRVR | Single-output, 40V OVP, 1.2MHz, 30mA max - lacks dual-current-sink architecture and IFB matching. | Suitable only for single-string applications; cannot replace dual-output functionality without redesign. | Select only if application requires higher OVP margin and single-string drive with lower cost. |
| MAX8646ETE+ | Dual-output, 2.7–5.5V input, 30mA/string, 1.1MHz - no integrated diode; requires external Schottky. | Higher external component count; less compact than TPS61150ADRCTG4 due to discrete diode and larger footprint. | Prefer when design already uses Maxim ecosystem or requires tighter input voltage range compliance. |
Compared with TPS61150ADRCTG4, TPS61160DRVR offers higher OVP but no dual-output capability, while MAX8646ETE+ provides similar dual-current control but demands external diode integration - making TPS61150ADRCTG4 the most integrated, space-efficient solution for clamshell and portable dual-backlight systems.
Availability
TPS61150ADRCTG4 is available at Aetrix Electronics and suitable for clamshell phone backlighting, portable media device displays, and industrial handheld equipment requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for TPS61150ADRCTG4 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 engineered specifically for space-constrained portable electronics requiring dual independent WLED current sources - emphasizing integration, thermal robustness, and audio-noise-free operation in battery-powered form factors.
FAQ
What is the maximum number of WLEDs the TPS61150ADRCTG4 can drive?
The TPS61150ADRCTG4 can drive up to 14 WLEDs total - 7 per string - when configured for dual-output operation with appropriate forward voltage headroom. Each string is limited to 34mA maximum current, and the boost output supports up to 27V, allowing series connection of WLEDs with typical VF ≈ 3.5V per diode. Real-world count depends on input voltage, efficiency, and thermal design.
Does the TPS61150ADRCTG4 require external compensation components?
No, the TPS61150ADRCTG4 features internal loop compensation optimized for the standard 10µH inductor and 1µF ceramic capacitors shown in the typical application circuit. External compensation is not required or supported - adding external components may destabilize the control loop or degrade transient response.
How does the TPS61150ADRCTG4 handle mismatched WLED forward voltages between strings?
The TPS61150ADRCTG4 dynamically switches feedback between IFB1 and IFB2 based on which pin voltage drops more than 60mV below regulation (330mV). This ensures both strings receive accurate current regulation even with significant VF mismatch - critical for maintaining brightness uniformity across displays with different LED batches or aging characteristics.
Can the TPS61150ADRCTG4 operate with only one WLED string enabled?
Yes, the TPS61150ADRCTG4 supports single-string operation by pulling either SEL1 or SEL2 low. When only one string is active, the boost converter regulates solely to that string's IFB pin, achieving higher efficiency than dual-string mode. The unused IFB pin floats above regulation voltage and does not affect performance.
What is the purpose of the exposed thermal pad on the TPS61150ADRCTG4 package?
The exposed thermal pad on the TPS61150ADRCTG4 QFN-10 package must be soldered to the PCB's analog ground plane to provide a low-thermal-resistance path for heat dissipation. With proper vias to internal ground layers, it reduces junction-to-ambient thermal resistance from 270°C/W to 48.7°C/W - essential for sustaining 83% efficiency at full load in compact portable enclosures.
TPS61150ADRCTG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 10-VFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- 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)
TPS61150ADRCTG4 FAQ
1.How can I place an order for TPS61150ADRCTG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS61150ADRCTG4 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 TPS61150ADRCTG4 reliable?
The price and inventory of TPS61150ADRCTG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS61150ADRCTG4 is usually 5 days.
3.What payment methods are accepted for TPS61150ADRCTG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS61150ADRCTG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS61150ADRCTG4?
TPS61150ADRCTG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS61150ADRCTG4 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 TPS61150ADRCTG4?
For technical support, including TPS61150ADRCTG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS61150ADRCTG4 requirements.
6.How does Aetrix verify that TPS61150ADRCTG4 is sourced from the original manufacturer or authorized distributors?
All TPS61150ADRCTG4 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 TPS61150ADRCTG4 meets industry standards.
7.What is the process for return or replacement of TPS61150ADRCTG4?
All TPS61150ADRCTG4 units undergo pre-shipment inspection (PSI). If there is an issue with TPS61150ADRCTG4, 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 TPS61150ADRCTG4 part is unused and in its original packaging.
Return procedure for TPS61150ADRCTG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPS61150ADRCTG4 Tags
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