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LM3500TL-16/NOPB LED Driver IC Equivalent & Substitute Parts
Part Overview
The LM3500TL-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 16V output at 400mA switch current for backlight applications. The part operates across a 2.7V to 7V supply range with 1MHz switching frequency and is compliant with ROHS3 standards.
The LM3500TL-16/NOPB is currently listed as obsolete. Identifying suitable substitute parts is necessary to maintain design continuity, ensure supply chain reliability, and support ongoing production requirements for applications requiring equivalent LED driver functionality.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer Part Number | LM3500TL-16/NOPB |
| Manufacturer | Texas Instruments |
| 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 |
| Applications | Backlight |
| Operating Temperature | -40°C ~ 85°C (TA) |
| Mounting Type | Surface Mount |
| Package / Case | 8-WFBGA |
| Product Status | Obsolete |
| RoHS Status | ROHS3 Compliant |
| MSL Rating | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitute parts for the LM3500TL-16/NOPB are selected based on the following critical parameters that determine functional equivalence:
Primary Selection Criteria:
- Topology: Step-Up (Boost) DC DC Regulator
- Number of Outputs: 1
- Internal Switch(s): Yes
- Supply Voltage Range: Minimum 2.7V input capability
- Output Voltage: 16V or higher capability
- Current Handling: 400mA or greater switch current
- Switching Frequency: Proximity to 1MHz
- Applications: Backlight or compatible LED driver use
- Mounting Type: Surface Mount
- RoHS Compliance: ROHS3 Compliant
Substitute parts are grouped into two categories:
Category A - Direct Functional Equivalents (Active Status): Parts with Step-Up (Boost) topology, 1 output, active product status, and supply voltage range supporting 2.7V minimum input. These parts maintain core LED driver functionality with comparable or enhanced current handling.
Category B - Extended Capability Substitutes (Active Status): Parts with enhanced topologies (SEPIC, multi-topology), higher current ratings, or extended supply voltage ranges. These provide functional equivalence with additional design flexibility for demanding applications.
Parameter Comparison
| Parameter | LM3500TL-16/NOPB | LM3508TLX/NOPB | TPS61158DRVR | A8513KLYTR-1-T | ISL97634ART26Z-T | LT3519EMS-1#PBF | LT3593EDC#TRMPBF | MAX1848ETA+T | MAX8607ETD+T | MIC2282YMM-TR | MIC2291-15YML-TR |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Manufacturer | Texas Instruments | Texas Instruments | Texas Instruments | Allegro MicroSystems | Renesas Electronics | Analog Devices Inc. | Analog Devices Inc. | Analog Devices Inc./Maxim | Analog Devices Inc./Maxim | Microchip Technology | Microchip Technology |
| Type | DC DC Regulator | DC DC Regulator | DC DC Regulator | DC DC Regulator | LED Driver IC | 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-Up (Boost) | SEPIC, Step-Up (Boost) | Not Specified | SEPIC, Step-Down (Buck), Step-Up (Boost) | Step-Up (Boost) | Step-Up (Boost) | Step-Up (Boost) | Step-Up (Boost) | Step-Up (Boost) |
| Number of Outputs | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Internal Switch(s) | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
| Voltage - Supply (Min) | 2.7V | 2.7V | 2.7V | 4.5V | Not Specified | 3V | 2.7V | 2.6V | 2.7V | 0.9V | 2.5V |
| Voltage - Supply (Max) | 7V | 5.5V | 5.5V | 40V | Not Specified | 30V | 5.5V | 5.5V | 5.5V | 15V | 10V |
| Voltage - Output | 16V | 17.5V | 2.7V ~ 29V | Not Specified | Not Specified | Not Specified | Not Specified | 12.2V | Not Specified | 35V | 16V |
| Current - Output / Channel | 400mA (Switch) | 30mA | 30mA | 150mA | Not Specified | 750mA (Switch) | 45mA | 750mA (Switch) | 1.5A (Flash) | 1.1A (Switch) | 1.2A (Switch) |
| Frequency | 1MHz | 850kHz | 750kHz | 1MHz | Not Specified | 1MHz | 1MHz | 1.2MHz | 1MHz | 20kHz | 1.2MHz |
| Dimming | Not Specified | PWM | PWM | PWM | Dimming | Analog, PWM | Not Specified | Not Specified | Not Specified | Not Specified | Analog, PWM |
| Applications | Backlight | Backlight | Backlight | Backlight | Not Specified | Lighting | Backlight | Backlight | Camera Flash | Not Specified | Camera Flash |
| Operating Temperature | -40°C ~ 85°C (TA) | -30°C ~ 85°C (TA) | -40°C ~ 85°C (TA) | -40°C ~ 125°C (TA) | Not Specified | -40°C ~ 125°C (TJ) | -40°C ~ 85°C (TJ) | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) | -40°C ~ 125°C (TJ) |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount |
| Package / Case | 8-WFBGA | 9-WFBGA, DSBGA | 6-WDFN Exposed Pad | 10-VFSOP, 10-MSOP Exposed Pad | 8-TDFN | 16-TFSOP | 6-WFDFN Exposed Pad | 8-WDFN Exposed Pad | 14-WFDFN Exposed Pad | 8-TSSOP, 8-MSOP | 8-VFDFN Exposed Pad, 8-MLF® |
| Product Status | Obsolete | Active | Active | Active | Active | Active | 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 | ROHS3 Compliant |
| MSL Rating | 1 (Unlimited) | 1 (Unlimited) | 2 (1 Year) | 2 (1 Year) | 2 (1 Year) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) |
Engineering Selection Recommendations
LM3508TLX/NOPB (Texas Instruments) Recommended as the primary substitute for designs where 30mA output current is acceptable. This part maintains Texas Instruments manufacturing continuity, operates across the same 2.7V minimum supply voltage, and delivers 17.5V output. Active product status ensures long-term availability. PWM dimming capability provides enhanced control flexibility. Note: Current rating is significantly lower than the original 400mA specification.
TPS61158DRVR (Texas Instruments) Suitable for applications requiring flexible output voltage configuration (2.7V to 29V range). Maintains Texas Instruments sourcing and active product status. Operating temperature range matches the original specification. 30mA current rating requires design reassessment for higher-power backlight applications. 6-WSON package offers compact footprint alternative to 8-WFBGA.
LT3519EMS-1#PBF (Analog Devices Inc.) Recommended for designs requiring higher switch current (750mA) and extended supply voltage range (3V to 30V). Multi-topology support (SEPIC, Buck, Boost) provides design flexibility. Active product status and ROHS3 compliance confirmed. Extended operating temperature range (-40°C to 125°C) supports demanding thermal environments. 16-MSOP package differs from original BGA footprint.
MAX1848ETA+T (Analog Devices Inc./Maxim Integrated) Suitable for backlight applications requiring 750mA switch current. Operates across 2.6V to 5.5V supply range with 12.2V output specification. Active product status and ROHS3 compliance confirmed. 8-WDFN package provides surface-mount compatibility. MSL rating of 1 (Unlimited) matches original moisture sensitivity specification.
MAX8607ETD+T (Analog Devices Inc./Maxim Integrated) Recommended for camera flash and high-current LED driver applications requiring 1.5A flash current. Operates across 2.7V to 5.5V supply range. Active product status and ROHS3 compliance confirmed. 14-WFDFN package accommodates higher current handling requirements. MSL rating of 1 (Unlimited) matches original specification.
MIC2291-15YML-TR (Microchip Technology) Recommended for designs requiring 1.2A switch current with dual dimming capability (Analog and PWM). Operates across 2.5V to 10V supply range with 16V output specification. Active product status and ROHS3 compliance confirmed. Extended operating temperature range (-40°C to 125°C) supports thermal demanding applications. 8-MLF package provides compact surface-mount footprint.
A8513KLYTR-1-T (Allegro MicroSystems) Suitable for automotive-grade applications requiring AEC-Q100 qualification. Supports SEPIC and Step-Up (Boost) topologies with 150mA current rating. Extended supply voltage range (4.5V to 40V) accommodates diverse input sources. Extended operating temperature range (-40°C to 125°C) supports automotive thermal requirements. 10-MSOP-EP package differs from original BGA footprint.
ISL97634ART26Z-T (Renesas Electronics Corporation) Recommended for LED driver applications with dimming capability. Active product status and ROHS3 compliance confirmed. Renesas manufacturing provides alternative sourcing option. 8-TDFN package offers compact surface-mount alternative to 8-WFBGA.
LT3593EDC#TRMPBF (Analog Devices Inc.) Suitable for backlight applications where 45mA current is acceptable. Operates across 2.7V to 5.5V supply range. Active product status and ROHS3 compliance confirmed. 6-WFDFN package provides compact footprint. MSL rating of 1 (Unlimited) matches original specification.
MIC2282YMM-TR (Microchip Technology) Recommended for designs requiring 1.1A switch current with extended supply voltage range (0.9V to 15V). Delivers 35V output capability for demanding LED applications. Active product status and ROHS3 compliance confirmed. 8-MSOP package provides surface-mount compatibility. Note: 20kHz switching frequency differs significantly from original 1MHz specification.
Frequently Asked Questions (FAQ)
Q: Can LM3508TLX/NOPB directly replace LM3500TL-16/NOPB in existing designs? A: LM3508TLX/NOPB maintains the same 2.7V minimum supply voltage and Step-Up (Boost) topology. However, the 30mA output current is substantially lower than the original 400mA specification. Direct replacement is feasible only for applications where reduced current capacity is acceptable. Package differences (9-WFBGA vs. 8-WFBGA) require PCB layout modification.
Q: What is the primary limitation when selecting substitute parts? A: The original LM3500TL-16/NOPB delivers 400mA switch current. Most substitute parts listed provide lower current ratings (30mA to 150mA range), with exceptions being LT3519EMS-1#PBF (750mA), MAX1848ETA+T (750mA), MAX8607ETD+T (1.5A), MIC2282YMM-TR (1.1A), and MIC2291-15YML-TR (1.2A). Current capacity must be verified against application requirements before selection.
Q: Are all substitute parts ROHS3 compliant? A: Yes. All substitute parts listed in this reference document are ROHS3 compliant, matching the original LM3500TL-16/NOPB compliance status.
Q: How do package differences affect substitution? A: The original LM3500TL-16/NOPB uses 8-WFBGA package. Substitute parts employ various packages including 9-WFBGA, 6-WSON, 10-MSOP-EP, 8-TDFN, 16-MSOP, 6-DFN, 8-TDFN, 14-TDFN, and 8-MSOP. Package changes require PCB redesign, including trace routing, thermal management, and component placement modifications.
Q: Which substitute parts maintain the closest operating temperature range? A: LM3508TLX/NOPB, TPS61158DRVR, MAX1848ETA+T, and MAX8607ETD+T all operate across -40°C to 85°C, matching the original specification. A8513KLYTR-1-T, LT3519EMS-1#PBF, and MIC2291-15YML-TR extend to -40°C to 125°C, providing enhanced thermal performance for demanding environments.
Q: What is the significance of MSL (Moisture Sensitivity Level) ratings? A: The original LM3500TL-16/NOPB carries MSL 1 (Unlimited), indicating no moisture sensitivity restrictions. Substitute parts with MSL 2 (1 Year) rating, including TPS61158DRVR, A8513KLYTR-1-T, and ISL97634ART26Z-T, require controlled storage and handling within one year of manufacture. This affects supply chain management and component shelf life.
Q: Which substitute parts support PWM dimming? A: LM3508TLX/NOPB, TPS61158DRVR, A8513KLYTR-1-T, LT3519EMS-1#PBF, and MIC2291-15YML-TR support PWM dimming. LT3519EMS-1#PBF and MIC2291-15YML-TR additionally support analog dimming, providing dual-mode control capability.
Q: Are automotive-grade alternatives available? A: A8513KLYTR-1-T from Allegro MicroSystems carries AEC-Q100 qualification, making it suitable for automotive applications. This part supports SEPIC and Step-Up (Boost) topologies with 150mA current rating and extended operating temperature range (-40°C to 125°C).
Q: How does switching frequency affect substitute selection? A: The original LM3500TL-16/NOPB operates at 1MHz. Most substitute parts maintain frequencies between 750kHz and 1.2MHz, ensuring compatible EMI characteristics and component sizing. MIC2282YMM-TR operates at 20kHz, significantly lower frequency requiring different inductor and capacitor selection for equivalent performance.
Q: Which substitute parts offer the highest current capacity? A: MAX8607ETD+T delivers 1.5A flash current, the highest among listed substitutes. MIC2291-15YML-TR provides 1.2A switch current, and MIC2282YMM-TR delivers 1.1A switch current. These parts are recommended for high-power LED driver applications exceeding 400mA requirements.
Q: Can substitute parts with higher supply voltage maximums be used in 2.7V to 7V applications? A: Yes. Parts with higher maximum supply voltage ratings (such as A8513KLYTR-1-T at 40V maximum, LT3519EMS-1#PBF at 30V maximum, and MIC2282YMM-TR at 15V maximum) are fully compatible with the original 2.7V to 7V supply range. Higher voltage ratings provide design flexibility for future applications without performance degradation in lower-voltage environments.
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