Request Quote
(Ships tomorrow)
MP4012DS-LF LED Driver Controller Equivalent & Substitute Parts
Part Overview
The MP4012DS-LF is an LED driver controller IC manufactured by Monolithic Power Systems Inc., classified as a Power Management PMIC. This device functions as a 1-output DC-DC controller supporting SEPIC, Step-Down (Buck), and Step-Up (Boost) topologies with analog and PWM dimming capabilities. The part is actively produced and designed for backlight and lighting applications in automotive-grade environments.
Substitute parts become necessary when the MP4012DS-LF reaches end-of-life status, experiences supply constraints, or when design requirements necessitate alternative package configurations, operating temperature ranges, or supply voltage specifications.
Substiute Parts
Key Parameters
| Parameter | MP4012DS-LF |
|---|---|
| Manufacturer | Monolithic Power Systems Inc. |
| Category | Power Management (PMIC) |
| Type | DC DC Controller |
| Topology | SEPIC, Step-Down (Buck), Step-Up (Boost) |
| Number of Outputs | 1 |
| Voltage - Supply (Min) | 8V |
| Voltage - Supply (Max) | 55V |
| Frequency | 580kHz |
| Dimming | Analog, PWM |
| Operating Temperature | -40°C ~ 85°C (TA) |
| Grade | Automotive |
| Package / Case | 16-SOIC (0.154", 3.90mm Width) |
| Mounting Type | Surface Mount |
| Product Status | Active |
| RoHS Status | ROHS3 Compliant |
Substitute Part Grouping Explanation
Substitution eligibility for the MP4012DS-LF is determined by the following critical parameters:
Topology Compatibility: The substitute must support at least SEPIC, Step-Down (Buck), or Step-Up (Boost) topologies. Devices supporting identical or superset topologies are functionally compatible.
Dimming Capability: The substitute must support both Analog and PWM dimming modes to maintain feature parity with the original design.
Supply Voltage Range: The substitute's minimum supply voltage must not exceed 8V, and maximum supply voltage must be at least 55V to ensure operation within the original design envelope.
Number of Outputs: The substitute must provide exactly 1 output to match the original configuration.
Automotive Grade: Substitutes must carry automotive-grade qualification to maintain compliance with the original part's automotive specification.
Package Compatibility: While package form factors may differ, the substitute must be surface-mount compatible. Pin count and electrical interface differences require circuit board redesign considerations.
Operating Temperature: The substitute's operating temperature range must encompass or exceed the original -40°C to 85°C specification.
Parameter Comparison
| Parameter | MP4012DS-LF | BD8381EFV-ME2 | LM3423Q1MHX/NOPB | LT3756EUD-2#PBF | LT3796HFE-1#PBF | LT8391AEUFD#PBF | MAX16834AUP+ | MAX16834AUP/V+T |
|---|---|---|---|---|---|---|---|---|
| Manufacturer | Monolithic Power Systems Inc. | ROHM Semiconductor | Texas Instruments | Analog Devices Inc. | Analog Devices Inc. | Analog Devices Inc. | Analog Devices Inc./Maxim Integrated | Analog Devices Inc./Maxim Integrated |
| Type | DC DC Controller | DC DC Controller | DC DC Controller | DC DC Controller | DC DC Controller | DC DC Controller | DC DC Controller | DC DC Controller |
| Topology | SEPIC, Step-Down (Buck), Step-Up (Boost) | Step-Down (Buck), Step-Up (Boost) | SEPIC, Step-Down (Buck), Step-Up (Boost) | Flyback, SEPIC, Step-Down (Buck), Step-Up (Boost) | SEPIC, Step-Down (Buck), Step-Up (Boost) | Step-Down (Buck), Step-Up (Boost) | SEPIC, Step-Down (Buck), Step-Up (Boost) | SEPIC, Step-Down (Buck), Step-Up (Boost) |
| Number of Outputs | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Voltage - Supply (Min) | 8V | 5V | 4.5V | 6V | 6V | 4V | 4.75V | 4.75V |
| Voltage - Supply (Max) | 55V | 30V | 75V | 100V | 100V | 60V | 28V | 28V |
| Frequency | 580kHz | 200kHz ~ 600kHz | 2MHz | 100kHz ~ 1MHz | 100kHz ~ 1MHz | 600kHz ~ 2MHz | 100kHz ~ 1MHz | 100kHz ~ 1MHz |
| Dimming | Analog, PWM | PWM | Analog, PWM | Analog, PWM | Analog, PWM | Analog, PWM | Analog, PWM | Analog, PWM |
| Operating Temperature | -40°C ~ 85°C (TA) | -40°C ~ 125°C (TA) | -40°C ~ 125°C (TJ) | -40°C ~ 125°C (TJ) | -40°C ~ 150°C (TJ) | -40°C ~ 125°C (TJ) | -40°C ~ 125°C (TA) | -40°C ~ 125°C (TA) |
| Grade | Automotive | Automotive | Automotive | Not specified | Not specified | Automotive | Automotive | Automotive |
| Package / Case | 16-SOIC (0.154", 3.90mm Width) | 28-VSSOP (0.173", 4.40mm Width) Exposed Pad | 20-PowerTSSOP (0.173", 4.40mm Width) | 16-WFQFN Exposed Pad | 28-TSSOP (0.173", 4.40mm Width) Exposed Pad | 28-WFQFN Exposed Pad | 20-TSSOP (0.173", 4.40mm Width) Exposed Pad | 20-TSSOP (0.173", 4.40mm Width) Exposed Pad |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount |
| Product Status | Active | Not For New Designs | Active | Active | Active | Active | Active | Active |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant |
Engineering Selection Recommendations
Primary Substitutes (Active Status, Full Automotive Grade):
LM3423Q1MHX/NOPB (Texas Instruments) and LT8391AEUFD#PBF (Analog Devices Inc.) represent the most direct substitutes. Both maintain active product status, automotive-grade qualification, and support the complete topology and dimming feature set. LM3423Q1MHX/NOPB extends the maximum supply voltage to 75V, providing additional design margin. LT8391AEUFD#PBF maintains a 60V maximum supply specification closer to the original 55V rating.
Secondary Substitutes (Active Status, Extended Temperature Range):
LT3756EUD-2#PBF and LT3796HFE-1#PBF (both Analog Devices Inc.) offer extended maximum supply voltages (100V) and broader topology support including Flyback configurations. These devices support the full dimming feature set and maintain active product status. LT3796HFE-1#PBF provides the highest operating temperature ceiling at 150°C (TJ).
Backlight-Specific Substitutes (Active Status, Automotive Grade):
MAX16834AUP+ and MAX16834AUP/V+T (Analog Devices Inc./Maxim Integrated) are specifically rated for backlight applications and carry automotive-grade qualification with AEC-Q100 certification on the tape-and-reel variant. These devices support SEPIC, Step-Down, and Step-Up topologies with full analog and PWM dimming capability. The maximum supply voltage of 28V limits applicability to lower-voltage designs.
Not Recommended for New Designs:
BD8381EFV-ME2 (ROHM Semiconductor) carries a "Not For New Designs" product status designation and lacks analog dimming capability, supporting only PWM dimming. This part is suitable only for legacy design maintenance.
Frequently Asked Questions (FAQ)
Q: Can BD8381EFV-ME2 replace MP4012DS-LF in new designs?
A: No. BD8381EFV-ME2 carries "Not For New Designs" status and supports only PWM dimming, not the analog dimming capability of MP4012DS-LF. This part is restricted to legacy design support only.
Q: Which substitute maintains the closest supply voltage specification to MP4012DS-LF?
A: LT8391AEUFD#PBF maintains a maximum supply voltage of 60V, closest to the original 55V specification. LM3423Q1MHX/NOPB extends to 75V, providing additional design margin for higher-voltage applications.
Q: Are package differences between substitutes significant?
A: Yes. MP4012DS-LF uses 16-SOIC packaging, while most substitutes employ 20-TSSOP, 28-TSSOP, or QFN packages. Package differences require circuit board redesign, including PCB layout modifications, thermal management adjustments, and pin assignment verification. Pin counts and electrical interfaces differ across packages.
Q: Do all substitutes support both analog and PWM dimming?
A: No. BD8381EFV-ME2 supports only PWM dimming. All other listed substitutes support both analog and PWM dimming modes, maintaining feature parity with MP4012DS-LF.
Q: Which substitute offers the widest operating temperature range?
A: LT3796HFE-1#PBF supports -40°C to 150°C (TJ), the widest range among listed substitutes. This exceeds the original MP4012DS-LF specification of -40°C to 85°C (TA).
Q: Are all substitutes automotive-grade qualified?
A: BD8381EFV-ME2, LT3756EUD-2#PBF, and LT3796HFE-1#PBF carry automotive-grade designation. LM3423Q1MHX/NOPB includes AEC-Q100 qualification. MAX16834AUP/V+T includes AEC-Q100 certification on the tape-and-reel variant. MAX16834AUP+ carries automotive-grade status without explicit AEC-Q100 notation.
Q: What topology limitations exist for substitutes?
A: LT8391AEUFD#PBF and BD8381EFV-ME2 do not support SEPIC topology, supporting only Step-Down (Buck) and Step-Up (Boost). All other substitutes support SEPIC, Step-Down, and Step-Up topologies. LT3756EUD-2#PBF additionally supports Flyback topology.
Q: Which substitutes are suitable for backlight applications?
A: MP4012DS-LF, LT3756EUD-2#PBF, LT8391AEUFD#PBF, MAX16834AUP+, and MAX16834AUP/V+T are explicitly rated for backlight applications. MAX16834 variants are specifically designed for backlight LED driver control.
Alternative Parts
SJ6012L2TP
Littelfuse Inc.
6 Alternative Parts
JMK107BBJ476MA-RE
Taiyo Yuden
10 Alternative Parts
GMK107BBJ475MA-T
Taiyo Yuden
5 Alternative Parts
SJ6020N2ARP
Littelfuse Inc.
3 Alternative Parts
SJ6025R2ATP
Littelfuse Inc.
4 Alternative Parts
2474-05L
API Delevan Inc.
1 Alternative Parts
4590R-684K
API Delevan Inc.
1 Alternative Parts
CM6560R-334
API Delevan Inc.
1 Alternative Parts
CM6460-104
API Delevan Inc.
1 Alternative Parts
5526-12
API Delevan Inc.
1 Alternative Parts