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AL8807AMP-13 LED Driver IC Equivalent & Substitute Parts
Part Overview
The AL8807AMP-13 is a LED Driver IC manufactured by Diodes Incorporated, designed as a single-output DC-DC regulator with step-down (buck) topology and analog dimming capability. This device operates with a 1.3A switch current, 700kHz switching frequency, and supports input voltage ranges from 6V to 36V. The part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and production continuity.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer Part Number | AL8807AMP-13 |
| Manufacturer | Diodes Incorporated |
| Product Category | Power Management (PMIC) |
| Product Status | Obsolete |
| Type | DC DC Regulator |
| Topology | Step-Down (Buck) |
| Number of Outputs | 1 |
| Voltage Supply (Min) | 6V |
| Voltage Supply (Max) | 36V |
| Voltage Output | 40V |
| Current Output / Channel | 1.3A (Switch) |
| Switching Frequency | 700kHz |
| Dimming Control | Analog |
| Operating Temperature | -40°C ~ 125°C (TJ) |
| Package / Case | 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) Exposed Pad |
| Mounting Type | Surface Mount |
| RoHS Status | ROHS3 Compliant |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitution logic for the AL8807AMP-13 is based on the following critical parameters:
Primary Substitution Criteria:
- Topology: Step-Down (Buck) DC-DC Regulator
- Number of Outputs: Single output
- Input Voltage Range: Minimum 6V supply capability
- Output Current Capability: 1.0A or greater switch current
- Dimming Control: Analog or Analog+PWM capability
- Package Compatibility: Surface mount with exposed pad variants
- Operating Temperature: -40°C minimum to 125°C or higher
- Compliance: ROHS3 compliant
Grouping Strategy:
Group 1 - Direct Replacement (Same Manufacturer, Active Status): AL8860MP-13 from Diodes Incorporated provides the closest functional match with enhanced specifications (1.5A output, PWM+Analog dimming, 1MHz frequency) while maintaining the same 8-MSOP-EP package footprint.
Group 2 - Alternative Package Formats (DFN/WFDFN): AOZ1084DI and HV9918K7-G offer step-down buck topology with PWM dimming in compact DFN packages. These provide reduced board space at the cost of lower current ratings (1.2A and 30mA respectively).
Group 3 - Extended Voltage Range (6V-40V+): IS31LT3360-SDLS4-TR, LM3402HVMRX/NOPB, and LM3406HVMH/NOPB support extended input voltage ranges (up to 40V-75V) with automotive-grade qualification, suitable for high-voltage LED applications.
Group 4 - Higher Current Capability: LED2000DR (3A) and LM3406MHX/NOPB (1.5A) provide increased output current for higher-power LED strings.
Group 5 - Flexible Dimming Control: LM3414HVMRX/NOPB combines analog and PWM dimming with wide voltage range (4.5V-65V) and automotive qualification.
Parameter Comparison
| Part Number | Manufacturer | Status | Topology | Vin Min (V) | Vin Max (V) | Iout (A) | Frequency (kHz) | Dimming | Package | Temp Range (°C) |
|---|---|---|---|---|---|---|---|---|---|---|
| AL8807AMP-13 | Diodes Inc. | Obsolete | Buck | 6 | 36 | 1.3 | 700 | Analog | 8-MSOP-EP | -40 to 125 |
| AL8860MP-13 | Diodes Inc. | Active | Buck | 4.5 | 40 | 1.5 | 1000 | Analog, PWM | 8-MSOP-EP | -40 to 105 |
| AOZ1084DI | Alpha & Omega | Active | Buck | 4.5 | 36 | 1.2 | 450 | PWM | 8-DFN-EP (2x2) | -40 to 85 |
| HV9918K7-G | Microchip | Active | Buck | 4.5 | 40 | 0.03 | 2000 | Analog, PWM | 8-DFN (3x3) | -40 to 125 |
| IS31LT3360-SDLS4-TR | Lumissil | Active | Buck | 6 | 40 | 1.2 | 1000 | Analog, PWM | SOT-89-5 | -40 to 125 |
| LED2000DR | STMicroelectronics | Active | Buck | 3 | 18 | 3 | 850 | PWM | 8-SOIC | -40 to 150 |
| LM3402HVMRX/NOPB | National Semi. | Active | Buck | 6 | 75 | 0.5 | 1000 | PWM | 8-SO PowerPad | -40 to 125 |
| LM3404MRX/NOPB | Texas Instruments | Active | Buck | 6 | 42 | 1 | 1000 | PWM | 8-SO PowerPad | -40 to 125 |
| LM3406HVMH/NOPB | Texas Instruments | Active | Buck | 6 | 75 | 1.5 | 10-1000 | PWM | 14-HTSSOP | -40 to 125 |
| LM3406MHX/NOPB | Texas Instruments | Active | Buck | 6 | 42 | 1.5 | 10-1000 | PWM | 14-HTSSOP | -40 to 125 |
| LM3414HVMRX/NOPB | Texas Instruments | Active | Buck | 4.5 | 65 | 1 | 500 | Analog, PWM | 8-SO PowerPad | -40 to 125 |
Engineering Selection Recommendations
For Direct Replacement with Same Footprint: AL8860MP-13 is the primary recommendation. It maintains the 8-MSOP-EP package, is manufactured by the same supplier (Diodes Incorporated), and carries active product status. The part exceeds the AL8807AMP-13 specifications with 1.5A output current, extended input voltage range (4.5V-40V), and dual dimming modes (Analog + PWM). All compliance certifications (ROHS3, REACH Unaffected) are maintained.
For Extended Voltage Applications (6V-75V Input): LM3406HVMH/NOPB or LM3402HVMRX/NOPB are suitable for high-voltage LED driver circuits. Both devices carry automotive-grade qualification and maintain -40°C to 125°C operating temperature range. LM3406HVMH/NOPB provides 1.5A output with programmable frequency (10kHz-1MHz), while LM3402HVMRX/NOPB delivers 500mA at up to 75V input.
For Compact Board Space (DFN Packages): AOZ1084DI or HV9918K7-G reduce PCB footprint with 8-DFN packages. AOZ1084DI maintains 1.2A output capability with PWM dimming. HV9918K7-G is suitable only for low-current applications (30mA) but offers the widest input voltage range (4.5V-40V) and highest switching frequency (2MHz).
For Higher Current Requirements (>1.5A): LED2000DR provides 3A output current in 8-SOIC package. Note that input voltage range is limited to 3V-18V, making this suitable only for lower-voltage LED applications.
For Flexible Dimming Control: LM3414HVMRX/NOPB combines analog and PWM dimming modes with wide input voltage range (4.5V-65V) and automotive qualification. This part offers maximum design flexibility for applications requiring both dimming methods.
All recommended substitutes maintain ROHS3 compliance and are actively manufactured with established supply availability.
Frequently Asked Questions (FAQ)
Q: Can AL8860MP-13 directly replace AL8807AMP-13 without PCB modifications?
A: Yes. Both parts use the 8-MSOP-EP package with identical pinout and exposed pad configuration. The AL8860MP-13 is pin-compatible and footprint-compatible. However, verify dimming control circuit compatibility, as AL8860MP-13 supports both analog and PWM dimming modes, while AL8807AMP-13 supports analog only.
Q: What is the key difference between analog and PWM dimming in these LED drivers?
A: Analog dimming adjusts LED brightness by modulating the output current through a control voltage. PWM dimming switches the output on and off at high frequency. Devices supporting both modes (AL8860MP-13, HV9918K7-G, IS31LT3360-SDLS4-TR, LM3414HVMRX/NOPB) provide design flexibility for different dimming circuit implementations.
Q: Is LM3406HVMH/NOPB suitable for 36V input applications?
A: Yes. LM3406HVMH/NOPB supports input voltage up to 75V, exceeding the 36V maximum of AL8807AMP-13. This part is suitable for high-voltage LED string applications. The 14-HTSSOP package is larger than the original 8-MSOP-EP, requiring PCB layout changes.
Q: Why does HV9918K7-G have such low output current (30mA)?
A: HV9918K7-G is designed for low-power LED indicator and signage applications. It is not suitable as a general replacement for AL8807AMP-13 in high-current LED driver circuits. Select this part only for applications requiring ≤30mA output current.
Q: Are all substitute parts ROHS3 compliant?
A: Yes. All recommended substitute parts carry ROHS3 compliance certification. Verify REACH status in your supply chain documentation, as all listed parts show REACH Unaffected status.
Q: What package options are available if I need to reduce PCB footprint?
A: AOZ1084DI and HV9918K7-G use 8-DFN packages (2x2mm and 3x3mm respectively), reducing board space compared to the 8-MSOP-EP. Trade-offs include lower current ratings and different thermal characteristics. Verify thermal performance requirements before selecting DFN variants.
Q: Can I use LED2000DR as a direct replacement?
A: No. LED2000DR has a maximum input voltage of 18V, significantly lower than AL8807AMP-13's 36V maximum. This part is suitable only for low-voltage LED applications (3V-18V input range). The 8-SOIC package also differs from the original 8-MSOP-EP.
Q: Which substitute offers the widest input voltage range?
A: LM3402HVMRX/NOPB and LM3406HVMH/NOPB both support 6V to 75V input, providing the widest operating range. These are recommended for applications requiring extended voltage headroom or automotive power supply variations.
Q: Do automotive-grade parts (marked with Grade: Automotive) offer better reliability?
A: Automotive-grade parts (LM3404MRX/NOPB, LM3406HVMH/NOPB, LM3406MHX/NOPB, LM3414HVMRX/NOPB) undergo additional qualification testing and carry higher reliability standards. These are recommended for mission-critical or high-reliability applications, though they may have longer lead times and higher costs.
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