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AP8801M8G-13 LED Driver IC Equivalent & Substitute Parts
Part Overview
The AP8801M8G-13 is a LED Driver IC manufactured by Diodes Incorporated, classified as a Power Management (PMIC) device. This single-output DC-DC regulator uses step-down (buck) topology with internal switching capability, rated for 500mA output current and operating across 8V to 48V supply range. The device supports both analog and PWM dimming for backlight and lighting applications.
The AP8801M8G-13 is currently listed as obsolete. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for applications utilizing this topology and performance class.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer Part Number | AP8801M8G-13 |
| Manufacturer | Diodes Incorporated |
| Product Category | Power Management (PMIC) |
| Type | DC DC Regulator |
| Topology | Step-Down (Buck) |
| Number of Outputs | 1 |
| Voltage Supply Range | 8V to 48V |
| Output Current | 500mA (Switch) |
| Switching Frequency | 625kHz |
| Dimming Capability | Analog, PWM |
| Operating Temperature | -40°C to 105°C (TA) |
| Package Type | 8-MSOP (0.118", 3.00mm Width) |
| Product Status | Obsolete |
| RoHS Status | ROHS3 Compliant |
| MSL Rating | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitution of the AP8801M8G-13 is determined by the following critical parameters:
Topology Requirement: Step-down (buck) DC-DC regulator with internal switching capability and single output.
Electrical Compatibility: Supply voltage range must encompass or overlap with the 8V to 48V input specification. Output current capability must meet or exceed 500mA to support the same load conditions.
Dimming Support: Devices must support both analog and PWM dimming modes, or at minimum PWM dimming for lighting control applications.
Package Compatibility: Surface-mount packages with similar footprint and pin count (8-pin configurations) are preferred to minimize PCB redesign.
Compliance & Status: Active or Last Time Buy status devices are prioritized over obsolete parts. ROHS3 compliance and unlimited MSL rating ensure manufacturing compatibility.
The substitute parts listed below meet these criteria across varying current ratings (350mA to 3A), supply voltage ranges (4.5V to 48V), and package options (8-MSOP, 8-SOIC, 8-DFN, TSOT-23-5, SOT-89-5).
Parameter Comparison
| Parameter | AP8801M8G-13 | AL8860MP-13 | A6213KLJTR-T | AOZ1084DI | CAV4201TD-GT3 | HV9918K7-G | IS31LT3360-SDLS4-TR | LM3404MRX/NOPB | LM3406MHX/NOPB | LM3414HVMRX/NOPB | LT3519IMS-2#PBF |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Manufacturer | Diodes Inc. | Diodes Inc. | Allegro | Alpha & Omega | onsemi | Microchip | Lumissil | Texas Instruments | Texas Instruments | Texas Instruments | Analog Devices |
| Topology | Buck | Buck | Buck | Buck | Buck | Buck | Buck | Buck | Buck | Buck | SEPIC, Buck, Boost |
| Supply Voltage (Min) | 8V | 4.5V | 6V | 4.5V | 6.5V | 4.5V | 6V | 6V | 6V | 4.5V | 3V |
| Supply Voltage (Max) | 48V | 40V | 48V | 36V | 36V | 40V | 40V | 42V | 42V | 65V | 30V |
| Output Current | 500mA | 1.5A | 3A | 1.2A | 350mA | 30mA | 1.2A | 1A | 1.5A | 1A | 750mA |
| Switching Frequency | 625kHz | 1MHz | — | 450kHz | 50kHz–1MHz | 2MHz | 1MHz | 1MHz | 10kHz–1MHz | 500kHz | 2.2MHz |
| Dimming | Analog, PWM | Analog, PWM | PWM | PWM | Analog | Analog, PWM | Analog, PWM | PWM | PWM | Analog, PWM | Analog, PWM |
| Operating Temperature | -40°C to 105°C | -40°C to 105°C | -40°C to 125°C | -40°C to 85°C | -40°C to 125°C | -40°C to 125°C | -40°C to 125°C | -40°C to 125°C | -40°C to 125°C | -40°C to 125°C | -40°C to 125°C |
| Package | 8-MSOP | 8-MSOP-EP | 8-SOIC-EP | 8-DFN-EP (2x2) | TSOT-23-5 | 8-DFN (3x3) | SOT-89-5 | 8-SO PowerPad | 14-HTSSOP | 8-SO PowerPad | 16-MSOP |
| Product Status | Obsolete | Active | Active | Active | Last Time Buy | 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) | 3 (168 Hours) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 3 (168 Hours) | 3 (168 Hours) | 1 (Unlimited) | 3 (168 Hours) | 1 (Unlimited) |
Engineering Selection Recommendations
Primary Substitute (Closest Match): AL8860MP-13 from Diodes Incorporated is the recommended primary substitute. It maintains the same manufacturer, package family (8-MSOP-EP), and supports both analog and PWM dimming. Output current is increased to 1.5A, providing headroom for the 500mA requirement. Supply voltage range (4.5V to 40V) overlaps the critical 8V to 48V specification at the lower end. Active product status ensures long-term availability.
Secondary Substitutes for Higher Current Applications: A6213KLJTR-T (Allegro, 3A) and LM3406MHX/NOPB (Texas Instruments, 1.5A) support the full 48V supply range and exceed current requirements. Both are active products with automotive qualification (AEC-Q100). Package differences (8-SOIC-EP, 14-HTSSOP) require PCB layout evaluation.
Substitutes for Analog Dimming Requirement: LM3414HVMRX/NOPB (Texas Instruments) and LT3519IMS-2#PBF (Analog Devices) both support analog and PWM dimming. LM3414 extends supply voltage to 65V and maintains 8-SO PowerPad package compatibility. LT3519 offers multi-topology capability (SEPIC, Buck, Boost) for flexible input/output configurations.
Lower Current Alternative: CAV4201TD-GT3 (onsemi, 350mA) is suitable only if application current does not exceed 350mA. Last Time Buy status indicates limited future availability.
Minimal Current Application: HV9918K7-G (Microchip, 30mA) is restricted to low-power signage and indicator lighting only.
All recommended substitutes maintain ROHS3 compliance and operate across the -40°C to 105°C temperature range or higher. Selection should prioritize active product status and MSL rating compatibility with manufacturing processes.
Frequently Asked Questions (FAQ)
Q: Can AL8860MP-13 directly replace AP8801M8G-13 without PCB modification?
A: AL8860MP-13 uses the same 8-MSOP package family with exposed pad (8-MSOP-EP). Pin-to-pin compatibility requires verification against detailed pinout documentation. The exposed pad improves thermal performance but may require PCB layout adjustment for thermal vias.
Q: What is the impact of increased output current rating on substitute selection?
A: Substitutes with higher current ratings (1.5A, 3A) are backward-compatible with 500mA load requirements. Higher ratings provide design margin and thermal headroom. Lower-rated substitutes (350mA, 30mA) are not suitable unless application current is confirmed below their ratings.
Q: Does supply voltage range variation affect substitution?
A: The AP8801M8G-13 operates from 8V to 48V. Substitutes with narrower ranges (e.g., 4.5V to 40V for AL8860MP-13) are acceptable if the application operates within the overlapping range. Substitutes with extended ranges (e.g., 4.5V to 65V for LM3414) provide additional design flexibility.
Q: Are PWM-only dimming devices acceptable replacements?
A: Devices supporting PWM dimming only (A6213KLJTR-T, LM3404MRX/NOPB, LM3406MHX/NOPB) are acceptable if the application does not require analog dimming control. Verify dimming interface requirements in the original design before substitution.
Q: What is the significance of MSL rating differences?
A: AP8801M8G-13 has MSL 1 (unlimited moisture sensitivity). Substitutes with MSL 3 (168 hours) require controlled storage and baking procedures before reflow soldering. Manufacturing process compatibility must be confirmed with quality and assembly teams.
Q: Can automotive-grade substitutes be used in non-automotive applications?
A: Automotive-qualified devices (A6213KLJTR-T with AEC-Q100, LM3404/LM3406/LM3414 with automotive grade) exceed non-automotive requirements and are acceptable for general lighting and signage applications. No design changes are required.
Q: How does package type affect PCB redesign effort?
A: AL8860MP-13 (8-MSOP-EP) requires minimal redesign. Substitutes with different packages (8-SOIC-EP, 8-DFN, TSOT-23-5, SOT-89-5, 14-HTSSOP, 16-MSOP) require PCB layout changes, schematic updates, and thermal analysis. Package selection should balance performance requirements against redesign cost.
Q: Is LT3519IMS-2#PBF suitable for direct replacement?
A: LT3519IMS-2#PBF offers multi-topology capability (SEPIC, Buck, Boost) and supports analog/PWM dimming. However, the 16-MSOP package and different pin configuration require significant PCB redesign. This device is recommended for new designs requiring flexible input/output voltage conversion rather than direct replacement.
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