My Inquiry
My Account
Texas Instruments TPS61041DBVR
- Part No.:
- TPS61041DBVR
- Manufacturer:
- Texas Instruments
- Category:
- LED Drivers
- Package:
- SC-74A, SOT-753
- Datasheet:
-
TPS61041DBVR.pdf
- Description:
- IC LED DRVR RGLTR PWM SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:10,412
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
TPS61041DBVR from Texas Instruments is a high-frequency, low-quiescent-current 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 no-load quiescent current, and supports up to 1MHz switching frequency-enabling compact designs in portable battery-powered devices like digital still cameras and handheld PCs.
For engineers reviewing the TPS61041DBVR datasheet, TPS61041DBVR pinout, TPS61041DBVR application, or TPS61041DBVR equivalent, key selection considerations include its 250mA current limit (vs. 400mA in TPS61040), SOT-23-5 footprint compatibility, feedback-based output voltage programming, thermal performance in DBV package (RθJA = 205.2°C/W), and PFM control architecture optimized for light-load efficiency.
Technical Context
The TPS61041DBVR employs pulse-frequency-modulation (PFM) with constant peak-current control to maintain high efficiency across load ranges. Its internal N-channel MOSFET has a typical on-resistance of 750 mΩ at 2.4V input and 200mA, and it enforces a 250mA current limit with ±35mA temperature-dependent variation.
It integrates undervoltage lockout (1.5V threshold), internal soft-start (two-stage current ramp), and thermal shutdown (168°C trip with 25°C hysteresis). The device regulates output by comparing FB pin voltage against a 1.233V reference, requiring external resistor divider and feedforward capacitor for stable operation above ~100kHz.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 1.8V to 6V - supports single-cell Li-ion (2.7–4.2V), dual-cell NiMH/NiCd (2.4–3.0V), or 3.3V/5V rails. |
| Output Voltage Range | Up to 28V - programmable via external resistor divider; enables LCD bias (e.g., 18V) and white-LED strings. |
| Switch Current Limit | 250mA (typical) - lower than TPS61040's 400mA, reducing output ripple and enabling smaller inductors for low-power apps. |
| Quiescent Current | 28μA (typical) - enables >1000-hour battery life in always-on bias supplies with microamp-level standby draw. |
| Shutdown Current | 1μA (typical) - minimizes leakage during system sleep; EN pin must be actively driven (not floating). |
| Switching Frequency | Up to 1MHz - allows use of small ceramic capacitors (e.g., 4.7μF input, 1μF output) and <10μH inductors. |
| Feedback Reference | 1.233V (±2.0%) - sets output via R1/R2 divider; FB pin bias current is only 1μA, minimizing divider power loss. |
Pinout & Package
SOT-23-5 (DBV) package: 2.9mm × 2.8mm footprint, 1.45mm height, thermally enhanced with exposed pad connected to GND in layout. Compatible with standard SMT reflow profiles; requires minimum 0.1mm solder mask opening under thermal pad.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN (Pin 5) | Power input | Accepts 1.8–6V supply; requires local 4.7μF ceramic decoupling within 3mm of pin. |
| SW (Pin 1) | Switch node | Connects to inductor and Schottky diode anode; carries high di/dt; routing must minimize loop area. |
| GND (Pin 2) | Ground reference | Primary return path; connects to thermal pad; must tie to solid ground plane beneath IC. |
| FB (Pin 3) | Feedback input | High-impedance (1μA bias) node sensing output divider; sensitive to noise-requires guard ring and short trace. |
| EN (Pin 4) | Enable control | Active-high logic input; VIH ≥ 1.3V, VIL ≤ 0.4V; must be pulled to VIN or GND-never left floating. |
Key Features
| Feature | Design Value |
|---|---|
| PFM peak-current control | Maintains >75% efficiency from 0.1mA to 30mA load without external compensation components. |
| Internal soft start | Two-stage current ramp (ILIM/4 → ILIM/2 → full) prevents input rail sag during startup in battery systems. |
| Low-noise feedback architecture | 1.233V reference with <±25mV drift over –40°C to +85°C enables stable 18V LCD bias within ±1.5% tolerance. |
| Thermal protection | 168°C junction shutdown with 25°C hysteresis prevents damage during sustained overload or poor PCB heatsinking. |
| Small solution size | With 10μH inductor, 4.7μF input, and 1μF output caps, total BOM area fits within 12mm²-ideal for space-constrained handhelds. |
Applications
| LCD Bias Supply | White-LED Backlight |
|---|---|
|
Use Scenario: Generating 18V bias for small-to-medium TFT-LCD panels in digital still cameras and PDAs. IC Role / Device Role / Timing Role: Primary DC-DC boost regulator providing regulated high-voltage rail; operates in discontinuous conduction mode (DCM) with variable-frequency PFM control. Use Value: Enables compact, low-ripple 18V supply using only five external components and a 2.9mm × 2.8mm IC footprint. |
Use Scenario: Driving parallel white-LED strings (e.g., 3× LEDs @ 3.2V each) in internet audio players and cellular phones. IC Role / Device Role / Timing Role: Constant-voltage LED driver with programmable output; FB pin adjusts for forward voltage tolerances across LED batches. Use Value: Delivers stable 12–15V output with <1% line/load regulation-critical for consistent LED brightness across battery discharge. |
| Digital Still Camera Power | Handheld PC System Bias |
|
Use Scenario: Providing 24V–28V for CCD/CMOS sensor bias and lens actuator drivers in compact digital cameras. IC Role / Device Role / Timing Role: High-efficiency boost stage operating from 3.6V Li-ion; switches at ~800kHz under nominal load to minimize EMI. Use Value: Achieves >82% efficiency at 10mA load-extending battery runtime while meeting CISPR-22 Class B radiated emissions limits. |
Use Scenario: Generating auxiliary 12V rail from 3.3V main supply in organizers and handheld PCs for USB peripherals or display interface ICs. IC Role / Device Role / Timing Role: Step-up converter in fixed-output configuration; EN pin synchronized to system power manager for sequenced startup. Use Value: Reduces bill-of-materials count versus discrete charge-pump solutions-no external FETs, gate drivers, or timing capacitors required. |
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, 600 mΩ RDS(on), identical pinout and package. | Higher output power capability; less suitable for ultra-low-ripple, low-current bias rails. | Select when driving >20mA loads or requiring margin for aging/temperature derating. |
| MAX682ESA+ | Fixed 5V output, 300mA switch, SO-8 package, 100μA quiescent current. | Not adjustable; limited to 5V step-up; larger footprint and higher IQ reduce battery life. | Choose only for legacy 5V-only designs where board space and efficiency are secondary to sourcing continuity. |
Compared with TPS61041DBVR, TPS61040DBVR offers higher current headroom but increased output ripple and inductor size; MAX682ESA+ sacrifices adjustability and efficiency for fixed-output simplicity in non-battery-critical systems.
Availability
TPS61041DBVR is available at Aetrix Electronics and suitable for LCD bias supply, white-LED backlight, and digital still camera power applications requiring stable component supply, long-term manufacturability, and RoHS-compliant SMT packaging.
Supply support for TPS61041DBVR 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 with emphasis on power management innovation and automotive-grade reliability.
The TPS6104x product line was engineered specifically for space-constrained, battery-operated portable electronics requiring high-voltage, low-quiescent-current boost conversion-targeting LCD bias, LED backlight, and auxiliary rail generation in handheld and imaging devices.
FAQ
What is the maximum output voltage achievable with the TPS61041DBVR?
The TPS61041DBVR supports an adjustable output voltage range up to 28V, set by an external resistor divider on the FB pin. This is achieved while maintaining regulation across the full 1.8V–6V input range and load currents up to 30mA. The internal 1.233V reference and low FB bias current (1μA) ensure accuracy and minimal divider power loss in the TPS61041DBVR design.
How does the TPS61041DBVR differ from the TPS61040DBVR in practical design?
The TPS61041DBVR features a 250mA internal switch current limit versus 400mA in the TPS61040DBVR, resulting in lower output voltage ripple, reduced inductor size requirements, and better light-load efficiency for low-power bias rails. Its RDS(on) is higher (750 mΩ vs. 600 mΩ), slightly increasing conduction loss-but this trade-off is intentional for optimized performance in sub-20mA applications using the TPS61041DBVR.
Can the TPS61041DBVR operate from a single alkaline cell?
Yes-the TPS61041DBVR operates down to 1.8V input, making it compatible with a single fresh alkaline cell (1.5V nominal, up to 1.65V open-circuit). Its undervoltage lockout triggers at ~1.5V, allowing usable operation through most of the cell's discharge curve. Combined with 28μA quiescent current, the TPS61041DBVR enables multi-month runtime in always-on LCD bias applications powered by AA/AAA cells.
What is the recommended feedforward capacitor value for the TPS61041DBVR in a 18V output design?
For an 18V output using R1 = 2.2MΩ and R2 = 160kΩ, the typical switching frequency is ~600kHz at 10mA load. Using CFF = 1/(2π·fS·20·R1), the calculated value is ~12pF-so a 10pF or 22pF NP0/C0G capacitor is recommended. This stabilizes the error comparator and prevents double-pulsing on the SW pin, directly improving output voltage ripple in the TPS61041DBVR application.
Does the TPS61041DBVR require an external Schottky diode, and what are key selection criteria?
Yes-the TPS61041DBVR requires an external Schottky diode connected between SW and VOUT. Key criteria include: low forward voltage (<0.4V at peak current), fast recovery (<10ns), and sufficient current rating (>250mA). Motorola MBR0530 (30V, 0.3V VF) is a validated option. Diode selection directly impacts efficiency and thermal performance in the TPS61041DBVR circuit.
TPS61041DBVR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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
TPS61041DBVR FAQ
1.How can I place an order for TPS61041DBVR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS61041DBVR 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 TPS61041DBVR reliable?
The price and inventory of TPS61041DBVR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS61041DBVR is usually 5 days.
3.What payment methods are accepted for TPS61041DBVR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS61041DBVR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS61041DBVR?
TPS61041DBVR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS61041DBVR 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 TPS61041DBVR?
For technical support, including TPS61041DBVR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS61041DBVR requirements.
6.How does Aetrix verify that TPS61041DBVR is sourced from the original manufacturer or authorized distributors?
All TPS61041DBVR 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 TPS61041DBVR meets industry standards.
7.What is the process for return or replacement of TPS61041DBVR?
All TPS61041DBVR units undergo pre-shipment inspection (PSI). If there is an issue with TPS61041DBVR, 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 TPS61041DBVR part is unused and in its original packaging.
Return procedure for TPS61041DBVR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPS61041DBVR Tags
-
BCR402RE6327HTSA1
Infineon Technologies
-
BCR430UXTSA2
Infineon Technologies
-
BCR420UE6433HTMA1
Infineon Technologies
-
BCR420UE6327HTSA1
Infineon Technologies
-
BCR421UE6327HTSA1
Infineon Technologies
-
LYT1604D-TL
Power Integrations
-
HV9910CLG-G
Microchip Technology
-
CL2N8-G
Microchip Technology
-
BCR420UW6-7
Diodes Incorporated
-
BCR421UW6-7
Diodes Incorporated
-
BCR420UFD-7
Diodes Incorporated
-
BCR421UFD-7
Diodes Incorporated
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
