AL8860MP-13
buck LED driver — Diodes Incorporated — C500782 — board-l U2 — rec-al8860mp-13
Everything below is projected from this project's stored component evidence. Values keep the exact wording, conditions, units and verdicts they were recorded with — nothing here is re-typed, corrected, or combined into an overall judgement about the part.
This record in the catalog: AL8860MP-13
Identity
Record ID:
rec-al8860mp-13Record kind: standalone
Manufacturer part number:
AL8860MP-13Manufacturer: Diodes Incorporated
Function: buck LED driver
LCSC ID:
C500782Package:
MSOP-8_L3.0-W3.0-P0.65-LS4.9-BL-EP1.8Inventory line:
line-c500782Also known as:
hysteretic LED driverOwner skill:
component-al8860mp-13Fit: Fitted
Identity state: UNRESOLVED
Source state: SOURCE UNAVAILABLE
Coverage: 1 open of 4 published
Component references
Selected document
Datasheet PDF
Footprint preview
MSOP-8_L3.0-W3.0-P0.65-LS4.9-BL-EP1.8. Open SVGPackage model
Interactive inspection requires JavaScript and WebGL. The package identity remains available in this page.
This geometry represents a shared footprint package and may not exactly match the manufacturer part.
Placements
Every position this exact line occupies in the as-built design. One line may be placed many times and across more than one board.
| Board | Reference designator |
|---|---|
| board-l | U2 |
Coverage
Coverage is stated one domain at a time and is never rolled up. A domain marked open is a question that has not been answered; it is not a finding that the part is unsuitable. A record with no open domains has not thereby been declared safe.
pin-topology-and-ep
Coverage ID:
cov-al8860-pin-topologyStatus: COVERED
Reason: fact-al8860-topology, fact-al8860-pin-ep, fact-al8860-project-nets
Facts in this domain:
limits-control-timing-faults
Coverage ID:
cov-al8860-limits-controlStatus: COVERED
Reason: fact-al8860-vin-recommended-max through fact-al8860-faults, plus fact-al8860-duty-band (DS39014 Rev 8-2, Electrical Characteristics table row DSW Recommended Duty Cycle Range, re-verified 2026-08-02 against the currently live diodes.com PDF, hash-matched to the retained mirror)
Facts in this domain:
layout-and-thermal
Coverage ID:
cov-al8860-layoutStatus: COVERED
Reason: fact-al8860-layout
Facts in this domain:
led-string-voltage-temperature
Coverage ID:
cov-al8860-led-domainStatus: OPEN
Reason: Exact LED VF versus current/temperature and switching-node overshoot require the LED/integration records and bench waveform.
Facts in this domain: none are recorded against it.
Blocked by: no blocking fact is recorded. What is missing has not been reduced to a specific recorded fact, so the reason above is the whole of what is known.
Facts
Each fact keeps its value, its unit, the conditions it holds under, where it came from and how far it has been confirmed as separate fields, because they are separate claims. A value without its conditions is not the same fact, and a verdict is about the evidence for the value, not about the part.
ABSOLUTE_MAXIMUM
A never-exceed limit. Reaching it may damage the part; it is not an operating target and there is no margin implied by it.
| Fact | Value | Unit | Conditions | Verdict | Provenance | Evidence |
|---|---|---|---|---|---|---|
fact-al8860-vin-absolute-max | 42 | V | stress rating only, TA=25 C | PASS - primary-source confirmed | PRIMARY-SPEC | src-al8860-ds39014: Absolute Maximum Ratings table row VIN |
RECOMMENDED_OPERATION
The range the manufacturer intends the part to be used in. Always narrower than the absolute maximum.
| Fact | Value | Unit | Conditions | Verdict | Provenance | Evidence |
|---|---|---|---|---|---|---|
fact-al8860-topology | hysteretic buck LED driver with integrated NDMOS and high-side current sense | NONE | normal buck operation | PASS - primary-source confirmed | PRIMARY-SPEC | src-al8860-ds39014: Section Application Information and Figure Typical Application Circuit |
fact-al8860-pin-ep | EP connects to GND thermal mass but is not an electrical ground conduction path | NONE | MSOP-8EP package | PASS - primary-source confirmed | PRIMARY-SPEC | src-al8860-ds39014: Pin Descriptions table row EP |
fact-al8860-vin-recommended-max | 40 | V | functional input range, TA=25 C unless specified | PASS - primary-source confirmed | PRIMARY-SPEC | src-al8860-ds39014: Recommended Operating Conditions table row VIN |
fact-al8860-ctrl | floating gives normal operation; below 0.2 V disables; 0.3-2.5 V analog dims; PWM below 500 Hz preserves best range | NONE | CTRL pin operation | PASS - primary-source confirmed | PRIMARY-SPEC | src-al8860-ds39014: Pin Descriptions table row CTRL and Application Information section PWM Dimming |
fact-al8860-min-on-time | 500 | ns | recommended minimum switch on-time for 4% accuracy | PASS - primary-source confirmed | PRIMARY-SPEC | src-al8860-ds39014: Electrical Characteristics table row tON_REC |
fact-al8860-max-frequency | 1 | MHz | recommended maximum switch frequency | PASS - primary-source confirmed | PRIMARY-SPEC | src-al8860-ds39014: Electrical Characteristics table row fSW(MAX) |
fact-al8860-inductance-min | 33 | uH | recommended AL8860 inductor range | PASS - primary-source confirmed | PRIMARY-SPEC | src-al8860-ds39014: Section Inductor Selection row recommended range |
fact-al8860-inductance-max | 100 | uH | recommended AL8860 inductor range | PASS - primary-source confirmed | PRIMARY-SPEC | src-al8860-ds39014: Section Inductor Selection row recommended range |
fact-al8860-faults | open LED stops oscillation; shorted LED chain remains regulated but changes duty and frequency; OTP restarts after hysteresis | NONE | documented open, short, and overtemperature states | PASS - primary-source confirmed | PRIMARY-SPEC | src-al8860-ds39014: Sections Thermal Protection, Open Circuit LEDs, and LED Chain Shorted Together |
fact-al8860-duty-band | 25 to 75 | % | DSW parameter, internal buck-switch operating duty-cycle recommended range, guaranteed by design; distinct from the 98% DSW(MAX) absolute maximum duty cycle and from the 5-100% CTRL-pin analog-dimming range | PASS - primary-source confirmed | PRIMARY-SPEC | src-al8860-ds39014: Electrical Characteristics table row DSW Recommended Duty Cycle Range |
GUARANTEED_ELECTRICAL
A parameter the manufacturer guarantees over the stated conditions, usually with minimum, typical and maximum values.
| Fact | Value | Unit | Conditions | Verdict | Provenance | Evidence |
|---|---|---|---|---|---|---|
fact-al8860-sense-min | 0.096 | V | SET relative to VIN, TA=25 C unless specified | PASS - primary-source confirmed | PRIMARY-SPEC | src-al8860-ds39014: Electrical Characteristics table row VSENSE minimum |
fact-al8860-sense-max | 0.104 | V | SET relative to VIN, TA=25 C unless specified | PASS - primary-source confirmed | PRIMARY-SPEC | src-al8860-ds39014: Electrical Characteristics table row VSENSE maximum |
fact-al8860-ripple-fraction | 0.4 | ratio | internally set coil peak-to-peak ripple relative to ILED | PASS - primary-source confirmed | PRIMARY-SPEC | src-al8860-ds39014: Section Inductor Selection equation definitions row delta-I |
THERMAL_SOA
Thermal and safe-operating-area behaviour: how much the part may dissipate, and under what mounting and ambient conditions.
| Fact | Value | Unit | Conditions | Verdict | Provenance | Evidence |
|---|---|---|---|---|---|---|
fact-al8860-layout | place input capacitor and inductor close; use low-resistance SW path; connect EP to thermal mass | NONE | MSOP-8EP implementation | PASS - primary-source confirmed | PRIMARY-SPEC | src-al8860-ds39014: Pin Descriptions table row EP and Sections Capacitor Selection and Inductor Selection |
PROJECT_STATE
A value this project recorded about how the part is used here — a chosen operating point, a net assignment, or a derived figure. Not a manufacturer specification.
| Fact | Value | Unit | Conditions | Verdict | Provenance | Evidence |
|---|---|---|---|---|---|---|
fact-al8860-manufacturer | Diodes Incorporated | NONE | exact AL8860MP-13 orderable identity | PASS - primary-source confirmed | PRIMARY-SPEC | src-al8860-ds39014: title block and ordering table row AL8860MP-13 |
fact-al8860-current-min | 0.4752475247524752 | A | CTRL floating, minimum sense threshold and maximum initial sense resistance at 25 C; TCR and self-heating unresolved | NEEDS BENCH | CALCULATED | src-al8860-ds39014 — CALCULATED: fact-al8860-sense-min divided by fact-rlp25-resistance-max |
fact-al8860-current-max | 0.5252525252525252 | A | CTRL floating, maximum sense threshold and minimum initial sense resistance at 25 C; TCR and self-heating unresolved | NEEDS BENCH | CALCULATED | src-al8860-ds39014 — CALCULATED: fact-al8860-sense-max divided by fact-rlp25-resistance-min |
fact-al8860-peak-current | 0.6303030303030303 | A | upper sense threshold, minimum initial 1% sense resistance, half of 40% peak-to-peak ripple above mean; TCR and self-heating unresolved | NEEDS BENCH | CALCULATED | src-al8860-ds39014 — CALCULATED: fact-al8860-current-max times one plus fact-al8860-ripple-fraction divided by two |
fact-al8860-project-nets | U2.8=V15; U2.1=SET; U2.4=CTRL; U2.5/6=LED_N; U2.2/3/9=GND; U2.7=NC | NONE | current generated Board L source | NOT APPLICABLE | PROJECT-CHOICE | src-al8860-generator: COMPONENTS table row U2, NETS rows, and NO_CONNECT row U2.7 |
Calculation dependencies
These values were derived from other recorded facts rather than read from a document. The expression and every input are published so the number can be recomputed instead of trusted. A derived value is never stronger than the weakest fact it depends on.
| Fact | Expression | Depends on |
|---|---|---|
fact-al8860-current-min | fact_al8860_sense_min / fact_rlp25_resistance_max | fact-al8860-sense-min, fact-rlp25-resistance-max on RLP25FEER200 |
fact-al8860-current-max | fact_al8860_sense_max / fact_rlp25_resistance_min | fact-al8860-sense-max, fact-rlp25-resistance-min on RLP25FEER200 |
fact-al8860-peak-current | fact_al8860_current_max * (1 + fact_al8860_ripple_fraction / 2) | fact-al8860-current-max, fact-al8860-ripple-fraction |
Pin maps
The mapping between schematic pins and PCB pads, or physical terminals for an external part, as recorded. A record may carry more than one map when the same part is documented in more than one context.
pinmap-al8860
Symbol:
AL8860MP-13Footprint:
MSOP-8_L3.0-W3.0-P0.65-LS4.9-BL-EP1.8Pins: 9
Pin assignments
| Symbol pin | Name | Footprint pad | Function |
|---|---|---|---|
1 | SET | 1 | sense input; Board L SET |
2 | GND | 2 | ground |
3 | GND | 3 | ground |
4 | CTRL | 4 | PWM/analog control |
5 | SW | 5 | switch drain; LED_N |
6 | SW | 6 | switch drain; LED_N |
7 | NC | 7 | no connection |
8 | VIN | 8 | V15 input |
9 | EP | 9 | GND thermal pad, not current-return substitute |
Interactions
Behaviour that is not a property of this part alone. Each interaction names the records it spans, the conditions it holds under, and how far it has been confirmed. An interaction that spans several parts appears on every one of their pages, under the same identifier, because it is equally a fact about each.
int-al8860-control
Records involved:
rec-al8860mp-13(this record)Conditions: CTRL driven by Board L PWM_DIM with analog/PWM state and frequency verified
Verdict: NEEDS BENCH
Facts this rests on:
int-al8860-power-stage
Records involved:
rec-al8860mp-13(this record),rec-rlp25feer200,rec-fxl0630-330-m,rec-ro-ss26Conditions: full LED-string VF/temperature, V15 transient, layout parasitics, and PWM operating envelope
Verdict: NEEDS BENCH
Facts this rests on:
fact-rlp25-power-marginon RLP25FEER200fact-fxl-isat-marginon FXL0630-330-Mfact-ss26-voltage-marginon SS26fact-ss26-current-marginon SS26
Cross-component rules
Rules that span several parts at once and are published in full on the integration page. Each rule's verdict below is that rule's own — it is a statement about the cross-component question, not about this part — and the exact wording of what the rule refuses to conclude is published with the rule itself.
rule-rail-envelope— rail-envelope — rule verdict: UNSOURCED — Whether every part on the input rail stays inside its own recorded limits across a legal power contract, a mis-contract, and a transient clamp event.rule-usb-pd-nvm-load-switch— usb-pd-nvm-load-switch — rule verdict: UNSOURCED — How the power-delivery controller's stored configuration and its enable output drive the load switch, through every state from detached to fault.rule-al8860-led-stage— al8860-led-stage — rule verdict: NEEDS BENCH — How the LED driver, its sense resistor, inductor, catch diode and per-branch ballast behave together across the LED forward-voltage, tolerance and temperature envelope.rule-evidence-chain— source-to-bench-chain — rule verdict: NEEDS BENCH — How far each claim has travelled from a manufacturer document towards a measurement on real hardware, stage by stage.rule-c5446803-power-cut— board-mounted lamp power switching — rule verdict: NEEDS BENCH
Sources
Every document cited above, with its identification, when it was retrieved, and what kind of authority it carries. Sources that could not be retrieved are listed too, with their unavailability stated, so a gap in the evidence is visible rather than absent.
AL8860 40V 1.5A Buck LED Driver
Source ID:
src-al8860-ds39014Document number: DS39014
Revision: Rev. 8-2
Document date: 2026-04
Retrieved: 2026-08-02
Authority: MANUFACTURER_PRIMARY
Locator: Pin Descriptions table; Absolute Maximum and Recommended Operating Conditions tables; Electrical Characteristics table; Application Information sections
Printed page: 2 of 18
Availability: AVAILABLE
Document URL: https:
/ / www. diodes. com/ datasheet/ download/ AL8860. pdf
Board L generated schematic specification
Source ID:
src-al8860-generatorDocument number: scripts/schgen/board_l_spec.py
Revision: 410bc1a342286dd6c205d6dcec0f248b8a963987
Document date: 2026-08-02
Retrieved: 2026-08-02
Authority: PROJECT_GENERATOR
Locator: COMPONENTS table row U2 and NETS rows V15, SET, LED_N, CTRL, PWM_DIM, and GND
Printed page: source file
Availability: AVAILABLE
Legend
What the recorded terms on this page mean, in ordinary words. The exact terms above are the ones that count; these descriptions explain them and never replace them.
Verdict
| Recorded term | What it means |
|---|---|
NEEDS BENCH | Cannot be settled from documents. It needs measurement on real hardware before it can be relied on. |
NOT APPLICABLE | The parameter does not apply to this part as it is used here. |
PASS - primary-source confirmed | Confirmed against the manufacturer's own document for this exact part. |
Provenance
| Recorded term | What it means |
|---|---|
CALCULATED | Derived arithmetically from other facts listed here. The expression and every input are shown, so the number can be recomputed rather than trusted. |
PRIMARY-SPEC | Taken from the manufacturer's own specification document. |
PROJECT-CHOICE | A decision made by this project. No vendor asserts it. |
Fact class
| Recorded term | What it means |
|---|---|
ABSOLUTE_MAXIMUM | A never-exceed limit. Reaching it may damage the part; it is not an operating target and there is no margin implied by it. |
GUARANTEED_ELECTRICAL | A parameter the manufacturer guarantees over the stated conditions, usually with minimum, typical and maximum values. |
PROJECT_STATE | A value this project recorded about how the part is used here — a chosen operating point, a net assignment, or a derived figure. Not a manufacturer specification. |
RECOMMENDED_OPERATION | The range the manufacturer intends the part to be used in. Always narrower than the absolute maximum. |
THERMAL_SOA | Thermal and safe-operating-area behaviour: how much the part may dissipate, and under what mounting and ambient conditions. |
Coverage status
| Recorded term | What it means |
|---|---|
COVERED | Every question this domain asks is answered by the facts listed against it. |
OPEN | Unresolved. Open means the question has not been answered, not that the part is unsafe — the reason states what is missing. |
Source availability
| Recorded term | What it means |
|---|---|
AVAILABLE | The document was retrieved and is on record. |
Source authority
| Recorded term | What it means |
|---|---|
MANUFACTURER_PRIMARY | The manufacturer's own document for this exact part. |
PROJECT_GENERATOR | A document this project generated, such as a schematic or netlist export. |
Identity state
| Recorded term | What it means |
|---|---|
UNRESOLVED | The exact orderable part is not yet confirmed. Substituting a same-name part from another vendor is not permitted on that basis. |
Source state
| Recorded term | What it means |
|---|---|
SOURCE UNAVAILABLE | No document backing this line could be retrieved. |
Unit
| Recorded term | What it means |
|---|---|
NONE | The value is not a physical quantity, so it carries no unit. Recorded as `NONE`. |
Raw agent resource
This page is generated from a stored evidence bundle and does not restate it. The bundle is the source of truth: where the two ever disagree, the bundle is right and this page is stale.
Open the owning bundle component-al8860mp-13