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TPS61040DRVR LED Driver IC Equivalent & Substitute Parts
Part Overview
The TPS61040DRVR is an active LED driver IC manufactured by Texas Instruments, classified as a Power Management PMIC. This device functions as a DC-DC regulator with Step-Up (Boost) topology, delivering PWM-based dimming control for single-output LED backlight applications. The part is supplied in 6-WSON (2x2) packaging via Cut Tape and Digi-Reel formats, with 29,650 units currently in stock. Identifying equivalent and substitute parts becomes necessary when addressing supply chain constraints, packaging preferences, or performance optimization within defined electrical and mechanical boundaries.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer Part Number | TPS61040DRVR |
| Manufacturer | Texas Instruments |
| Category | Power Management (PMIC) |
| Type | DC DC Regulator |
| Topology | Step-Up (Boost) |
| Package / Case | 6-WDFN Exposed Pad |
| Supplier Device Package | 6-WSON (2x2) |
| Voltage - Supply (Min) | 1.8V |
| Voltage - Supply (Max) | 6V |
| Voltage - Output | 28V |
| Current - Output / Channel | 350mA (Switch) |
| Frequency | 1MHz |
| Dimming | PWM |
| Applications | Backlight |
| Operating Temperature | -40°C ~ 85°C (TA) |
| Mounting Type | Surface Mount |
| RoHS Status | ROHS3 Compliant |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
| Product Status | Active |
Substitute Part Grouping Explanation
Substitute parts for the TPS61040DRVR are classified based on strict alignment with the following critical parameters:
Primary Substitution Criteria:
- Topology: Step-Up (Boost) configuration
- Dimming Control: PWM capability
- Output Voltage: 26V to 30V range
- Switch Current: 225mA to 750mA range
- Supply Voltage: Minimum 1.8V to 2.7V; Maximum 5.5V to 12V
- Operating Temperature: -40°C minimum; 85°C or higher maximum
- RoHS3 Compliance and MSL rating compatibility
- Surface Mount technology with exposed pad packages
Packaging Considerations: Substitutes are available in alternative packages (TSOT-23-6, 6-DFN, SC-70-8, 8-TDFN, 8-MLF) that maintain functional equivalence while offering different form factors and thermal characteristics.
Topology Exceptions: The ILD6150XUMA1 and LT3592EDDB#TRMPBF employ Step-Down (Buck) topology rather than Step-Up, representing functional alternatives for specific lighting applications where input voltage exceeds output requirements.
Parameter Comparison
| Manufacturer Part Number | Manufacturer | Topology | Package | Voltage Supply (Min-Max) | Voltage Output | Current Output | Frequency | Dimming | Operating Temp | MSL |
|---|---|---|---|---|---|---|---|---|---|---|
| TPS61040DRVR | Texas Instruments | Step-Up (Boost) | 6-WSON (2x2) | 1.8V - 6V | 28V | 350mA | 1MHz | PWM | -40°C ~ 85°C | 1 |
| TPS61040DRVT | Texas Instruments | Step-Up (Boost) | 6-WSON (2x2) | 1.8V - 6V | 28V | 350mA | 1MHz | PWM | -40°C ~ 85°C | 1 |
| AP5724WUG-7 | Diodes Incorporated | Step-Up (Boost) | TSOT-23-6 | 2.7V - 5.5V | - | 750mA | 1.2MHz | PWM | -40°C ~ 85°C | 1 |
| AP5725WUG-7 | Diodes Incorporated | Step-Up (Boost) | TSOT-23-6 | 2.7V - 5.5V | 26V | 750mA | 1.2MHz | PWM | -40°C ~ 85°C | 1 |
| ILD6150XUMA1 | Infineon Technologies | Step-Down (Buck) | PG-DSO-8 | 4.5V - 60V | - | 1.5A | 1MHz | Analog, PWM | -40°C ~ 150°C | 3 |
| LT3465AES6#TRMPBF | Analog Devices Inc. | Step-Up (Boost) | TSOT-23-6 | 2.7V - 16V | 30V | 225mA | 2.4MHz | PWM | -40°C ~ 85°C | 1 |
| LT3491EDC#TRPBF | Analog Devices Inc. | Step-Up (Boost) | 6-DFN (2x2) | 2.5V - 12V | 27V | 260mA | 2.3MHz | PWM | -40°C ~ 85°C | 1 |
| LT3491ESC8#TRPBF | Analog Devices Inc. | Step-Up (Boost) | SC-70-8 | 2.5V - 12V | - | 350mA | 2.3MHz | PWM | -40°C ~ 85°C | 1 |
| LT3592EDDB#TRMPBF | Analog Devices Inc. | Step-Down (Buck) | 10-DFN (3x2) | 3.6V - 36V | 30V | 50mA, 500mA | 400kHz ~ 2.2MHz | - | -40°C ~ 125°C | 1 |
| MAX1553ETA+T | Analog Devices Inc./Maxim Integrated | Step-Up (Boost) | 8-TDFN (3x3) | 2.7V - 5.5V | 40V | 480mA | - | Analog, PWM | -40°C ~ 85°C | 1 |
| MIC2289-24YML-TR | Microchip Technology | Step-Up (Boost) | 8-MLF® (2x2) | 2.5V - 10V | 24V | 750mA | 1.2MHz | Analog, PWM | -40°C ~ 125°C | 1 |
Engineering Selection Recommendations
Direct Parametric Equivalent: TPS61040DRVT represents the closest substitute, offering identical electrical specifications and topology with differentiation only in packaging format (Tape & Reel versus Cut Tape). Both parts maintain ROHS3 compliance, MSL-1 rating, and active product status.
Step-Up (Boost) Alternatives with Higher Current Capacity: AP5724WUG-7 and AP5725WUG-7 (Diodes Incorporated) deliver 750mA switch current versus the 350mA of the TPS61040DRVR, accommodating higher LED load requirements. These parts operate within the 2.7V to 5.5V supply range and maintain PWM dimming capability. AP5725WUG-7 specifies 26V output voltage, aligning with the TPS61040DRVR output specification.
Analog Devices Boost Regulators: LT3491EDC#TRPBF and LT3491ESC8#TRPBF provide Step-Up topology with 260mA and 350mA switch current respectively, operating across 2.5V to 12V supply range. Both maintain 27V output capability and PWM dimming control. LT3491ESC8#TRPBF matches the 350mA current specification of the primary part.
LT3465AES6#TRMPBF offers 225mA switch current with extended supply range (2.7V to 16V) and 30V output voltage, suitable for applications requiring higher input voltage tolerance.
Higher Current Capacity Option: MAX1553ETA+T (Maxim Integrated) delivers 480mA switch current with 40V output voltage capability, supporting both analog and PWM dimming modes. Operating temperature range matches the TPS61040DRVR specification.
Microchip Alternative: MIC2289-24YML-TR provides 750mA switch current with 24V output voltage and dual dimming control (Analog and PWM). Operating temperature extends to 125°C, exceeding the TPS61040DRVR specification.
Step-Down (Buck) Topology Alternatives: ILD6150XUMA1 (Infineon) and LT3592EDDB#TRMPBF (Analog Devices) employ Step-Down topology for applications where input voltage exceeds output requirements. ILD6150XUMA1 supports 1.5A output current with extended operating temperature to 150°C. LT3592EDDB#TRMPBF offers dual current modes (50mA and 500mA) with frequency range 400kHz to 2.2MHz.
All substitute parts maintain ROHS3 compliance and active product status. MSL-1 rating is standard across all recommended alternatives except ILD6150XUMA1, which carries MSL-3 classification.
Frequently Asked Questions (FAQ)
Q: Can TPS61040DRVT be used as a direct replacement for TPS61040DRVR? A: Yes. Both parts share identical electrical specifications, topology, and compliance ratings. The only difference is packaging format: TPS61040DRVT is supplied in Tape & Reel format while TPS61040DRVR uses Cut Tape and Digi-Reel. Functional performance and pin configuration are equivalent.
Q: What is the primary difference between Step-Up and Step-Down topology substitutes? A: Step-Up (Boost) regulators increase input voltage to achieve higher output voltage, suitable when input supply is lower than required LED voltage. Step-Down (Buck) regulators reduce input voltage, appropriate when input supply exceeds output requirements. The TPS61040DRVR uses Step-Up topology; ILD6150XUMA1 and LT3592EDDB#TRMPBF use Step-Down topology for different application scenarios.
Q: Are higher current-rated substitutes backward compatible with the TPS61040DRVR design? A: Higher current-rated parts (AP5724WUG-7, AP5725WUG-7, MIC2289-24YML-TR at 750mA; MAX1553ETA+T at 480mA) are electrically compatible when supply voltage and output voltage specifications align. However, PCB layout and thermal management may require optimization for the increased current capability. Verify that your application circuit design accommodates the substitute part's package and thermal characteristics.
Q: What packaging options are available for substitutes? A: Substitutes are available in multiple packages: 6-WSON (2x2) matching the primary part, TSOT-23-6 (smaller footprint), 6-DFN (2x2), SC-70-8, 8-TDFN (3x3), 8-MLF (2x2), and PG-DSO-8. Package selection depends on PCB space constraints and thermal dissipation requirements. Smaller packages may limit current handling; larger packages provide improved thermal performance.
Q: Do all substitutes support PWM dimming? A: Most substitutes support PWM dimming. ILD6150XUMA1 and MAX1553ETA+T support both analog and PWM dimming modes. LT3592EDDB#TRMPBF does not specify dimming capability in the provided parameters. Verify dimming control requirements for your specific application before selection.
Q: What is the significance of MSL rating differences? A: MSL (Moisture Sensitivity Level) indicates component sensitivity to moisture during storage and handling. MSL-1 (unlimited shelf life) is superior to MSL-3 (168-hour limit). The TPS61040DRVR carries MSL-1; ILD6150XUMA1 carries MSL-3, requiring stricter moisture control during storage and assembly processes.
Q: Can I use a substitute with higher operating temperature range? A: Yes. Parts with higher maximum operating temperature (ILD6150XUMA1 at 150°C, MIC2289-24YML-TR at 125°C) provide additional thermal margin compared to the TPS61040DRVR specification of 85°C. This is beneficial for applications in elevated ambient conditions or high-power scenarios, though it does not require design changes if your application operates within the TPS61040DRVR temperature range.
Q: Are all substitutes ROHS3 compliant? A: Yes. All listed substitute parts maintain ROHS3 compliance, matching the environmental and regulatory status of the TPS61040DRVR.
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