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Texas Instruments TPS61041DBVRG4
- Part No.:
- TPS61041DBVRG4
- Manufacturer:
- Texas Instruments
- Category:
- LED Drivers
- Package:
- SC-74A, SOT-753
- Datasheet:
-
TPS61041DBVRG4.pdf
- Description:
- IC LED DRVR RGLTR PWM SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:3,000
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Product details
Overview
TPS61041DBVRG4 from Texas Instruments is a low-power, high-frequency DC-DC boost converter in SOT-23-5 package, designed for LCD bias and white-LED backlight supplies. It operates from 1.8V–6V input, delivers up to 28V output, features 250mA internal switch current limit, 28μA typical quiescent current, and supports up to 1MHz switching frequency-enabling compact designs in handheld displays and battery-powered imaging devices.
For engineers reviewing the TPS61041DBVRG4 datasheet, TPS61041DBVRG4 pinout, TPS61041DBVRG4 application, or TPS61041DBVRG4 equivalent, key selection considerations include its 250mA current limit (vs. 400mA in TPS61040), SOT-23-5 thermal performance (RθJA = 205.2°C/W), adjustable feedback reference (1.233V), soft-start implementation, and shutdown current of 1μA.
Technical Context
The TPS61041DBVRG4 uses pulse-frequency-modulation (PFM) with constant peak-current control to maintain high efficiency across light-to-moderate loads. Its internal N-channel MOSFET has RDS(on) of 750–1250 mΩ at 2.4V input and 200mA, and it enforces a maximum on-time of 6μs and minimum off-time of 400ns to ensure stable discontinuous conduction mode (DCM) operation.
It integrates undervoltage lockout (1.5V threshold), thermal shutdown (~168°C with 25°C hysteresis), and internal soft-start that ramps current limit in two stages (ILIM/4 → ILIM/2 → full ILIM). The FB pin senses output via external resistor divider, referencing an internal 1.233V bandgap, with ±0.025V tolerance over temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 1.8V to 6V - supports single-cell Li-ion, dual-cell NiMH/NiCd, and standard 3.3V/5V rails. |
| Output Voltage Range | Adjustable up to 28V - set by external FB divider; enables LCD bias and LED string drive without external regulation. |
| Switch Current Limit | 250mA typical - lower than TPS61040, reducing output ripple and enabling smaller inductors for low-power applications. |
| Quiescent Current | 28μA typical - minimizes battery drain in always-on or standby display systems. |
| Shutdown Current | 1μA typical - ensures near-zero power loss when disabled via EN pin. |
| Switching Frequency | Up to 1MHz - allows use of small ceramic capacitors and compact 2.2–10μH inductors. |
| Feedback Reference | 1.233V ±25mV - precise voltage setting with <0.15%/mA load regulation and <0.05%/V line regulation. |
Pinout & Package
TPS61041DBVRG4 is housed in a 5-pin SOT-23-5 (DBV) package measuring 2.9mm × 2.8mm, with exposed pad not present (unlike WSON variants). Thermal resistance is RθJA = 205.2°C/W; recommended PCB layout includes thermal relief on GND-connected copper.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN (Pin 5) | Power input | Accepts 1.8–6V supply; requires ≥4.7μF low-ESR ceramic capacitor close to pin. |
| SW (Pin 1) | Switch node | Connects to inductor and Schottky diode anode; carries pulsed current up to 250mA peak. |
| GND (Pin 2) | Ground reference | Primary return path for power and control circuits; must be low-impedance plane connection. |
| FB (Pin 3) | Feedback input | Senses output voltage divider; 1μA bias current enables high-impedance dividers (e.g., 2.2MΩ/160kΩ for 18V). |
| EN (Pin 4) | Enable control | Active-high logic input; <0.4V disables device (1μA ISD); >1.3V enables; must not float. |
Key Features
| Feature | Design Value |
|---|---|
| Internal soft start | Ramps current limit in two 256-cycle steps (ILIM/4 → ILIM/2 → full) to suppress inrush and prevent input rail sag. |
| Peak-current PFM control | Maintains >70% efficiency from 0.1mA to 30mA load; inherently stable in DCM without compensation components. |
| Low-noise enable function | EN pin has <1μA leakage and defined VIH/VIL thresholds (1.3V/0.4V), enabling direct MCU GPIO control without pull-up/down. |
| Integrated UVLO | Disables switching below ~1.5V input, preventing erratic operation during battery brownout or cold start. |
| Thermal protection | Shuts down internal MOSFET above ~168°C junction temperature with ~25°C hysteresis; recovers autonomously after cooldown. |
Applications
| LCD Bias Supply | White-LED Backlight |
|---|---|
Use Scenario: Powering gate-source bias voltages (e.g., +18V/-10V) for small-to-medium TFT-LCD panels in portable medical monitors and industrial HMIs. IC Role / Device Role / Timing Role: Primary DC-DC boost regulator generating stable high-voltage rail from single-cell battery; regulates via FB pin with 1.233V reference. Use Value: Enables compact, low-quiescent design with <28μA operating current and no external compensation required. | Use Scenario: Driving 3–5 white LEDs in series (requiring ~12–18V) for backlighting in digital still cameras and PDAs. IC Role / Device Role / Timing Role: Constant-voltage boost converter with adjustable output; FB divider sets target voltage; SW pin drives external inductor/diode. Use Value: Delivers 250mA peak switch current sufficient for moderate LED strings while minimizing output ripple via optimized PFM timing. |
| Digital Still Camera | Handheld Internet Audio Player |
Use Scenario: Providing regulated 12V–18V for CCD/CMOS sensor bias and flash LED charging circuitry in compact camera modules. IC Role / Device Role / Timing Role: High-efficiency boost stage operating from 3.6V Li-ion; uses 1MHz switching to shrink passive size (e.g., 4.7μH inductor). Use Value: Achieves >80% efficiency at 10mA load with 28μA quiescent current, extending battery life between shots. | Use Scenario: Generating 12V from 3.3V system rail to power audio amplifier ICs and OLED display drivers in portable music players. IC Role / Device Role / Timing Role: Step-up converter with EN-controlled on/off sequencing; soft start prevents pop noise during power-up. Use Value: Integrates shutdown current <1μA and fast enable response (<10μs), supporting instant-on user experience with zero standby drain. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar boost converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS61040DBVR | 400mA switch current limit, higher RDS(on) (600–1000 mΩ), same package and pinout. | Supports higher output power (e.g., larger LED arrays), but with greater output ripple and thermal load. | Select TPS61040DBVR only when >25mA average load or >15V@20mA output is required; verify thermal margin with RθJA = 205.2°C/W. |
| MT3608EN | 2A switch current, fixed 600kHz frequency, no integrated soft start, different pinout (SOT23-6). | Targets higher-power LED drivers or general-purpose boost; lacks UVLO and precise 1.233V reference. | MT3608EN requires external soft-start circuitry and tighter input filtering; not drop-in compatible due to pin mismatch and control architecture differences. |
Compared with TPS61041DBVRG4, TPS61040DBVR offers higher output current at the cost of increased ripple and thermal stress, while MT3608EN provides higher peak capability but sacrifices precision regulation, low-IQ, and integrated protection features essential for battery-sensitive portable designs.
Availability
TPS61041DBVRG4 is available at Aetrix Electronics and suitable for LCD bias supply, white-LED backlighting, digital still camera power management, handheld internet audio players, and portable medical display systems requiring stable component supply and long-term manufacturability.
Supply support for TPS61041DBVRG4 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 delivering analog, embedded processing, and connectivity solutions for industrial, automotive, and personal electronics markets.
The TPS6104x product line was engineered specifically for space-constrained, battery-powered display systems-prioritizing ultra-low quiescent current, high-voltage boost capability, and minimal external component count in sub-3mm footprint packages.
FAQ
What is the maximum output voltage supported by the TPS61041DBVRG4?
The TPS61041DBVRG4 supports an adjustable output voltage range up to 28V, set by an external resistor divider connected to the FB pin. The internal 1.233V reference and ±25mV tolerance allow precise regulation; output stability depends on proper selection of R1/R2 values and inclusion of feedforward capacitor CFF per application requirements.
Does the TPS61041DBVRG4 require external compensation components?
No, the TPS61041DBVRG4 does not require external compensation components. Its pulse-frequency-modulation (PFM) peak-current control architecture is inherently stable in discontinuous conduction mode (DCM), eliminating the need for loop compensation networks. This simplifies design and reduces bill-of-materials for LCD bias and LED backlight applications.
How does the soft-start function operate in the TPS61041DBVRG4?
The TPS61041DBVRG4 implements a two-stage soft-start that limits inrush current by ramping the internal current limit: first to ILIM/4 for 256 cycles, then to ILIM/2 for another 256 cycles, before reaching full 250mA limit. This staged approach prevents input rail sag and avoids false triggering of system-level brownout detectors during power-up.
Can the TPS61041DBVRG4 be used with ceramic output capacitors?
Yes, the TPS61041DBVRG4 is fully compatible with ceramic output capacitors. Its PFM control scheme and internal compensation are optimized for low-ESR ceramics (e.g., 1μF X7R 25V in 1206). Ceramic caps reduce board area and improve transient response versus tantalum alternatives, and the datasheet explicitly recommends them for best output filtering.
What is the thermal performance of the TPS61041DBVRG4 in its SOT-23-5 package?
The TPS61041DBVRG4 in DBV (SOT-23-5) package has a junction-to-ambient thermal resistance (RθJA) of 205.2°C/W under standard JEDEC test conditions. Effective thermal management requires a minimum 100mm² copper pour connected to the GND pin; derating is advised above 85°C ambient, with thermal shutdown activating at ~168°C junction temperature.
TPS61041DBVRG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- DC DC Regulator
- Topology:
- Step-Up (Boost)
- Internal Switch(s):
- Yes
- Number of Outputs:
- 1
- Voltage - Supply (Min):
- 1.8V
- Voltage - Supply (Max):
- 6V
- Voltage - Output:
- 28V
- Current - Output / Channel:
- 215mA (Switch)
- Frequency:
- 1MHz
- Dimming:
- PWM
- Applications:
- Backlight
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
TPS61041DBVRG4 FAQ
1.How can I place an order for TPS61041DBVRG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS61041DBVRG4 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 TPS61041DBVRG4 reliable?
The price and inventory of TPS61041DBVRG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS61041DBVRG4 is usually 5 days.
3.What payment methods are accepted for TPS61041DBVRG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS61041DBVRG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS61041DBVRG4?
TPS61041DBVRG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS61041DBVRG4 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 TPS61041DBVRG4?
For technical support, including TPS61041DBVRG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS61041DBVRG4 requirements.
6.How does Aetrix verify that TPS61041DBVRG4 is sourced from the original manufacturer or authorized distributors?
All TPS61041DBVRG4 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 TPS61041DBVRG4 meets industry standards.
7.What is the process for return or replacement of TPS61041DBVRG4?
All TPS61041DBVRG4 units undergo pre-shipment inspection (PSI). If there is an issue with TPS61041DBVRG4, 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 TPS61041DBVRG4 part is unused and in its original packaging.
Return procedure for TPS61041DBVRG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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