FL7733AMX

FL7733AMX is an onsemi primary-side-regulated LED controller with power-factor correction in SOIC-8 / SOP-8 (CASE 751EB). The exact ordering row specifies −40°C to +125°C and 2,500 pieces per tape-and-reel package; that quantity is not stock or MOQ. The 80–308 VAC range describes the application input, not the VDD pin rating. The datasheet distinguishes total constant-current tolerance below ±3% from below ±1% for universal-line voltage variation. Its maximum CC frequency fMAX-CC is 70 kHz typical (65 minimum, 75 maximum) at VDD = 15 V, TA = 25°C and VS = 3.0 V, not a fixed switching frequency. Match the transformer, external MOSFET, current-sense network and thermal design to the approved circuit. The manufacturer lists FL7733AMX as Active as reviewed on 18 October 2026; this does not establish availability.

Integrated CircuitsLED driver ICSOP-8

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MPN: FL7733AMX
Manufacturer: onsemi
Family: LED driver IC
Package: SOP-8
Manufacturer channel coverage: Checked by RFQ
Data last checked: Commercial check required
Required order checks: Suffix, package, date code, lot, source and traceability
Lifecycle: Active

PROCUREMENT DATA

Identity and sourcing requirements.

MANUFACTURER DATA REVIEW

Key technical specifications

Ordering-code highlights reviewed against official manufacturer documentation.

Controller type: Primary-side-regulated LED controller with power-factor correction
Application input range: 80 VAC to 308 VAC · application-level range, not the VDD pin rating
Constant-current tolerance: Less than ±3% total over all conditions; less than ±1% for universal-line voltage variation · datasheet feature limits
Maximum CC frequency (fMAX-CC): 70 kHz typical; 65 kHz minimum, 75 kHz maximum · VDD = 15 V, TA = 25°C, VS = 3.0 V; not a fixed switching frequency
VDD turn-on threshold: 16.0 V typical; 14.5 V minimum, 17.5 V maximum · electrical table, TJ = −40°C to +125°C
VDD turn-off threshold: 7.75 V typical; 6.75 V minimum, 8.75 V maximum · electrical table, TJ = −40°C to +125°C
Operating temperature: −40°C to +125°C · FL7733AMX ordering row
Package / packing: SOIC-8 / SOP-8 (CASE 751EB) · 2,500 pieces per tape-and-reel package, not stock or MOQ

Source: onsemi FL7733A/D Rev. 3 (January 2023) · pp. 1, 4–5, 12; exact-code product-table status · Reviewed 2026-10-18

Sourcing note

Confirm ordering suffix, package, temperature grade, programming and date-code requirements.

Before you request a quote

Separate controller specifications from converter performance
The 80–308 VAC range describes the application input, not the controller supply pin. Validate the transformer, external MOSFET, current-sense network and thermal design; a line-variation tolerance is not the total system accuracy.
Keep the complete ordering code
Match FL7733AMX and the SOP-8 footprint to the approved BOM. Active is the manufacturer status reviewed on the stated date, not confirmation of stock, price or delivery; reconfirm the offered lot and packing before quotation.

Official documentation

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QUOTE WORKFLOW

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Identity

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Supply

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Evidence

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Terms

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RELATED REFERENCES

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COMMON QUESTIONS

FL7733AMX FAQ

What are the key specifications of FL7733AMX?

From the verified technical profile: Controller type: Primary-side-regulated LED controller with power-factor correction; Application input range: 80 VAC to 308 VAC · application-level range, not the VDD pin rating; Constant-current tolerance: Less than ±3% total over all conditions; less than ±1% for universal-line voltage variation · datasheet feature limits. These are the catalog-recorded values for FL7733AMX — always re-check them against the manufacturer datasheet revision quoted on your BOM before finalizing the design.

What should I check before substituting FL7733AMX with another LED driver IC?

Match the full ordering code, not the series name: package (SOP-8), temperature grade and packing all ride on the suffixes. A same-series code in a different package is a different orderable device, so confirm the substitute against the onsemi datasheet before changing the BOM.