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LM3501TLX-16/NOPB LED Driver IC Equivalent & Substitute Parts
Part Overview
The LM3501TLX-16/NOPB is a LED Driver IC manufactured by Texas Instruments, classified as a Power Management (PMIC) component. This device functions as a 1-output DC DC regulator with Step-Up (Boost) topology, delivering 400mA switch current at 16V output from a 2.7V to 7V supply. The component is designed for backlight applications and operates across -40°C to 125°C (TJ).
The LM3501TLX-16/NOPB is currently listed as Obsolete. Equivalent and substitute parts are necessary for new designs, production continuity, and long-term component availability assurance.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Part Number | LM3501TLX-16/NOPB |
| Category | Power Management (PMIC) |
| Type | DC DC Regulator |
| Topology | Step-Up (Boost) |
| Number of Outputs | 1 |
| Voltage Supply (Min) | 2.7V |
| Voltage Supply (Max) | 7V |
| Voltage Output | 16V |
| Current Output / Channel | 400mA (Switch) |
| Frequency | 1MHz |
| Operating Temperature | -40°C ~ 125°C (TJ) |
| Package / Case | 8-WFBGA |
| Mounting Type | Surface Mount |
| RoHS Status | ROHS3 Compliant |
| Product Status | Obsolete |
Substitute Part Grouping Explanation
Substitution logic for the LM3501TLX-16/NOPB is based on the following critical parameters:
Primary Substitution Criteria:
- Topology: Step-Up (Boost) DC DC Regulator
- Number of Outputs: 1
- Voltage Supply Range: 2.7V minimum to 7V maximum
- Voltage Output: 16V
- Current Output Capability: 400mA (Switch)
- Operating Frequency: 1MHz
- Package Type: 8-WFBGA (Surface Mount)
- Temperature Range: -40°C to 125°C minimum
Substitution Categories:
Category 1: Parametric Equivalents (Identical Electrical & Mechanical Specifications) Parts that maintain all critical electrical parameters and package compatibility with the main part.
Category 2: Manufacturer Recommended Alternatives (Functional Substitutes with Parameter Variations) Parts that provide equivalent functionality but with modified electrical specifications, package types, or operating ranges. These require design validation for specific applications.
Parameter Comparison
| Parameter | LM3501TLX-16/NOPB | LM3501TL-16/NOPB | A6211GLJTR-T | ADP1649ACBZ-R7 | BD6069GUT-E2 | BD60A60NUX-TR | IS31LT3360-SDLS3-TR | LT3592EMSE#TRPBF | LT3956IUHE#TRPBF | MAX1910EUB+T |
|---|---|---|---|---|---|---|---|---|---|---|
| Manufacturer | Texas Instruments | Texas Instruments | Allegro MicroSystems | Analog Devices Inc. | ROHM Semiconductor | Rohm Semiconductor | Lumissil Microsystems | Analog Devices Inc. | Analog Devices Inc. | Analog Devices Inc./Maxim Integrated |
| Type | DC DC Regulator | DC DC Regulator | DC DC Regulator | DC DC Regulator | DC DC Regulator | DC DC Regulator | DC DC Regulator | DC DC Regulator | DC DC Regulator | DC DC Regulator |
| Topology | Step-Up (Boost) | Step-Up (Boost) | Step-Down (Buck) | Step-Up (Boost) | Step-Up (Boost) | Step-Up (Boost) | Step-Down (Buck) | Step-Down (Buck) | Flyback, SEPIC, Step-Down (Buck), Step-Up (Boost) | Switched Capacitor (Charge Pump) |
| Number of Outputs | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Voltage Supply (Min) | 2.7V | 2.7V | 6V | 2.7V | 2.7V | 2.7V | 6V | 3.6V | 4.5V | 2.7V |
| Voltage Supply (Max) | 7V | 7V | 48V | 5V | 5.5V | 5.5V | 40V | 36V | 80V | 5.3V |
| Voltage Output | 16V | 16V | — | 4.575V ~ 5.425V | 18V | — | 40V | 30V | 80V | — |
| Current Output / Channel | 400mA (Switch) | 400mA (Switch) | 3A | 1A (Flash) | 270mA (Switch) | 30mA | 1.2A (Switch) | 50mA, 500mA | 3.3A (Switch) | 120mA |
| Frequency | 1MHz | 1MHz | — | 1.5MHz, 3MHz | 1MHz | 600kHz | 1MHz | 400kHz ~ 2.2MHz | 100kHz ~ 1MHz | 750kHz |
| Operating Temperature | -40°C ~ 125°C (TJ) | -40°C ~ 125°C (TJ) | -40°C ~ 105°C (TA) | -40°C ~ 85°C (TA) | -30°C ~ 85°C (TA) | -40°C ~ 85°C (TA) | -40°C ~ 105°C (TA) | -40°C ~ 125°C (TA) | -40°C ~ 125°C (TJ) | -40°C ~ 85°C (TA) |
| Package / Case | 8-WFBGA | 8-WFBGA | 8-SOIC (0.154", 3.90mm Width) Exposed Pad | 12-WFBGA, WLCSP | 8-WFBGA, CSPBGA | 8-UFDFN Exposed Pad | SOT-89-5/6 | 10-TFSOP, 10-MSOP (0.118", 3.00mm Width) Exposed Pad | 36-WFQFN, 28 Leads, Exposed Pad | 10-TFSOP, 10-MSOP (0.118", 3.00mm Width) |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount |
| Product Status | Obsolete | Active | Active | Active | Obsolete | Active | Active | Active | Active | Active |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant |
Engineering Selection Recommendations
LM3501TL-16/NOPB (Parametric Equivalent) This part is the direct parametric equivalent to the LM3501TLX-16/NOPB. It maintains identical electrical specifications, topology, output voltage, current rating, and operating temperature range. The primary difference is product status: LM3501TL-16/NOPB is Active, ensuring long-term availability. Package type is 8-WFBGA with Tape & Reel (TR) packaging. This is the preferred direct replacement for new designs and production continuity.
A6211GLJTR-T (Allegro MicroSystems) This part operates as a Step-Down (Buck) topology regulator with 3A output current capability. Supply voltage range is 6V to 48V, which does not overlap the 2.7V to 7V requirement of the main part. This topology and voltage specification difference makes it unsuitable for direct substitution in applications requiring Step-Up (Boost) conversion from low input voltages.
ADP1649ACBZ-R7 (Analog Devices Inc.) This part maintains Step-Up (Boost) topology and operates within the 2.7V to 5V supply range. However, output voltage is specified as 4.575V to 5.425V, which differs from the 16V output of the main part. Current output is 1A (Flash), exceeding the 400mA requirement. Operating temperature is -40°C to 85°C, which is narrower than the main part's -40°C to 125°C range. Application focus is Camera Flash rather than Backlight.
BD6069GUT-E2 (ROHM Semiconductor) This part maintains Step-Up (Boost) topology with 2.7V to 5.5V supply range and 18V output voltage, closely matching the main part's specifications. Current output is 270mA (Switch), which is lower than the 400mA requirement. Operating temperature is -30°C to 85°C (TA), which is narrower than the main part's range. Product status is Obsolete. Package type is VCSP60N1 (8-WFBGA, CSPBGA).
BD60A60NUX-TR (Rohm Semiconductor) This part maintains Step-Up (Boost) topology with 2.7V to 5.5V supply range. Current output is 30mA, significantly lower than the 400mA requirement. Operating frequency is 600kHz, differing from the 1MHz specification. Package type is 8-UFDFN Exposed Pad. Product status is Active. This part is unsuitable for applications requiring 400mA output current.
IS31LT3360-SDLS3-TR (Lumissil Microsystems) This part operates as a Step-Down (Buck) topology regulator with 6V to 40V supply range and 1.2A (Switch) output current. Topology differs from the Step-Up (Boost) requirement. Supply voltage minimum of 6V exceeds the 2.7V minimum of the main part. This part is unsuitable for Step-Up (Boost) conversion applications.
LT3592EMSE#TRPBF (Analog Devices Inc.) This part operates as a Step-Down (Buck) topology regulator with 3.6V to 36V supply range and 50mA, 500mA output current capability. Output voltage is 30V. Topology differs from the Step-Up (Boost) requirement. This part is unsuitable for Step-Up (Boost) conversion applications.
LT3956IUHE#TRPBF (Analog Devices Inc.) This part supports multiple topologies including Step-Up (Boost), with 4.5V to 80V supply range and 3.3A (Switch) output current. Operating temperature is -40°C to 125°C (TJ), matching the main part. However, minimum supply voltage of 4.5V exceeds the 2.7V requirement. This part offers greater flexibility for multi-topology applications but requires higher input voltage.
MAX1910EUB+T (Analog Devices Inc./Maxim Integrated) This part operates as a Switched Capacitor (Charge Pump) topology with 2.7V to 5.3V supply range and 120mA output current. Topology differs from Step-Up (Boost). Current output of 120mA is lower than the 400mA requirement. Operating temperature is -40°C to 85°C (TA), narrower than the main part's range. This part is unsuitable for applications requiring 400mA output current and Step-Up (Boost) topology.
Frequently Asked Questions (FAQ)
Q: Can LM3501TL-16/NOPB directly replace LM3501TLX-16/NOPB? A: Yes. LM3501TL-16/NOPB is a parametric equivalent with identical electrical specifications, topology, output voltage, current rating, and operating temperature range. The primary difference is product status (Active vs. Obsolete) and packaging format (Tape & Reel vs. standard packaging). This is the recommended direct replacement.
Q: Why are some substitute parts listed with different topologies? A: Topology determines the voltage conversion method. The main part uses Step-Up (Boost) topology to increase voltage from 2.7V–7V input to 16V output. Parts with Step-Down (Buck) or Switched Capacitor topologies perform different voltage conversion functions and are not suitable for applications requiring Step-Up (Boost) conversion. Topology is a critical substitution parameter.
Q: What is the significance of the 400mA current specification? A: The 400mA (Switch) specification indicates the maximum switch current the regulator can deliver. This determines the maximum load current the device can supply. Substitute parts with lower current ratings (such as 30mA or 120mA) cannot support the same load requirements and are unsuitable for equivalent functionality.
Q: Why does operating temperature range matter for substitution? A: The main part operates from -40°C to 125°C (TJ). Substitute parts with narrower temperature ranges (such as -40°C to 85°C) may not function reliably in applications requiring the full temperature specification. Temperature range is a critical parameter for industrial and automotive applications.
Q: Can parts with different supply voltage ranges be substituted? A: No. The main part requires a 2.7V to 7V input supply range. Substitute parts with different minimum or maximum supply voltages (such as 6V minimum or 5V maximum) cannot operate across the same input voltage range and are unsuitable for equivalent functionality.
Q: What is the difference between 8-WFBGA and other package types? A: 8-WFBGA is a specific surface-mount package type with defined physical dimensions and pin configuration. Substitute parts with different package types (such as 8-SOIC, SOT-89-5, or 10-MSOP) have different physical dimensions, pin layouts, and PCB footprints. Package compatibility must be verified during design integration.
Q: Is RoHS3 compliance a substitution requirement? A: All listed parts maintain ROHS3 Compliant status, consistent with the main part. This ensures environmental and regulatory compliance across substitute selections.
Q: Why is product status (Active vs. Obsolete) important? A: Active products have guaranteed long-term availability and manufacturing support. Obsolete products may have limited stock and no future production. For new designs and production continuity, Active status parts are preferred.
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