AP1661MTR-G1 - 800mA PFC Controller | Diodes Incorporated
MPN: AP1661MTR-G1 ✓ Active| Qty | Unit Price | Extended |
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| 1 | $0 | $0.00 |
| 10 | $0 | $0.00 |
| 100 | $0 | $0.00 |
| 500 | $0 | $0.00 |
| 1,000 | $0 | $0.00 |
AP1661MTR-G1 Overview
A power-factor-correction controller is an integrated circuit that controls the switching stage of a boost converter so the input current tracks the input voltage more closely than a simple linear or rectifier circuit. In the power-management hierarchy, AP1661MTR-G1 belongs to the PFC controller class, supports a boost-converter topology, and is intended to reduce input-current distortion in AC-to-DC power supplies. Its 8-pin SOIC package is surface-mount compatible and suitable for compact power-conversion boards.
Verified distributor information identifies AP1661MTR-G1 as an active, RoHS-compliant SOIC-8 device. The listed operating-temperature range is -40 °C to +85 °C. The available technical summary also reports an 800 mA IOUT condition, a 14.5 V VIN condition, boundary-conduction-mode PFC operation, 600 mA and 800 mA current ratings, a 50 µA current-related specification, and a 2.5 V reference-related specification. Other detailed electrical limits, switching frequency, protection thresholds, pin functions, and timing values are not supplied in the verified data and require the manufacturer datasheet.
Typical applications include AC-to-DC front ends for industrial power supplies, server or telecom power-supply modules, adapters, chargers, and other systems where near-unity power factor can reduce reactive and harmonic current. In a practical implementation, the controller drives external MOSFETs, rectifiers, inductors, sensing resistors, and protection circuitry; it does not directly provide the final isolated output voltage.
The primary design consideration is ensuring adequate voltage headroom, current sensing, switching-node layout, and thermal capacity for the external boost components. Designers should verify the exact AP1661MTR-G1 datasheet and application circuit before finalizing component values, since the supplied web data does not expose a complete pinout or full timing and electrical tables.
This page consolidates verified distributor specifications, package and lifecycle information, replacement-search results, and practical design guidance for engineers evaluating AP1661MTR-G1 in power-factor-correction systems.
Drop-in alternatives for AP1661MTR-G1 — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with AP1661MTR-G1 (same form factor and footprint) — differing in Mounting Type, Package Type, Configuration / Function, Lifecycle Status, Operating Temperature.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
AP1661P-G1
✅ Drop-In📋 Reference alternative (not in catalog)
AP1662MTR-G1
✅ Drop-In📋 Reference alternative (not in catalog)
AP1661AP-G1
✅ Drop-In✓ In Stock
Contact for price
View Datasheet →AP1661MTR-G1DI
✅ Drop-In📋 Reference alternative (not in catalog)
AP1661P-E1
✅ Drop-In✓ In Stock
Contact for price
View Datasheet →AP1661MTR-G1 Maximum Ratings & Electrical Characteristics
| Configuration / Function | Boost power-factor-correction controller |
| Topology | Boost PFC pre-converter |
| Output Current (IOUT) | 0.800 A |
| Input Voltage (VIN) | 14.5 V |
| Current Rating 1 | 600 mA |
| Current Rating 2 | 800 mA |
| Quiescent Current Related Specification | 50 µA |
| Reference Voltage Related Specification | 2.5 V |
| Operating Temperature | -40 °C to +85 °C |
| Package Type | SOIC-8 |
| Package Width | 3.90 mm |
| Mounting Type | Surface mount |
| Lifecycle Stage | Active |
| RoHS Status | RoHS compliant |
| PFC Operating Mode | Boundary conduction mode (BCM) |
| Manufacturer Category | Power Management PMIC / PFC controller |
| Pin Count | 8 pins |
AP1661MTR-G1 3.90 mm Pin Configuration Guide
Pin configuration for AP1661MTR-G1 (3.90 mm package). This power device features gate, drain, and source terminals. For non-polarized packages, refer to the manufacturer datasheet for exact pin 1 orientation and footprint details. Common applications include power supply design, motor driving, and load switching.
No detailed pinout data available for AP1661MTR-G1.
Refer to the datasheet for full pin configuration.
Typical Applications
AP1661MTR-G1 is suitable for 6 applications: Industrial AC-to-DC Power Supply, Server and Telecom Power-Supply Module, High-Power AC Charger Front End, LED Driver Power Supply, Power-Quality Correction Module, Compact Offline Power Supply.
Industrial AC-to-DC Power Supply
AP1661MTR-G1 fits an industrial PFC front end where a boost pre-converter improves input-current phase relative to a basic rectifier-capacifier supply. Its verified boundary-conduction-mode PFC classification and -40 °C to +85 °C operating range make it suitable for controlled indoor power-conversion equipment. The controller should drive an external MOSFET, inductor, rectifier, current-sense network, and feedback loop, while the designer supplies input fusing, surge protection, isolation, and output capacitance. Because the verified data does not include full switching-frequency or protection tables, transformer, inductor, and compensation values must be taken from the manufacturer application circuit.
Recommended
Server and Telecom Power-Supply Module
AP1661MTR-G1 is relevant to server or telecom power modules that require a dedicated boost PFC stage ahead of a downstream DC-DC converter. The controller's 0.800 A IOUT-related specification and 14.5 V VIN-related specification provide a starting point for architecture selection, while boundary-conduction-mode operation can simplify control in suitable power ranges. The external power stage still requires careful layout because high-voltage switching nodes, current-sense traces, and feedback loops can create EMI and stability problems. Use manufacturer reference designs to set switching frequency, inductor, sensing, and protection values rather than extrapolating from the distributor summary.
Recommended
High-Power AC Charger Front End
AP1661MTR-G1 can serve as the PFC controller in an AC charger front end when the design objective includes reducing input-current distortion before a secondary converter. Its boost-controller function is appropriate for a pre-regulator stage, but the IC does not provide the complete charger, isolated output, or safety certification. Designers must validate input-rectifier stress, MOSFET voltage rating, inductor saturation current, current-sense accuracy, and thermal performance at the intended output power. The verified 14.5 V VIN-related figure should not be interpreted as the complete operating-input range without the manufacturer datasheet.
Recommended
LED Driver Power Supply
AP1661MTR-G1 is applicable to LED-driver power supplies that use an AC-to-DC boost PFC stage before an LED current-regulation converter. The controller can help shape the line current and improve power quality, while the downstream converter determines LED current regulation and dimming behavior. The verified distributor classification also appears under LED-driver-related listings, but the supplied data does not provide a complete LED-specific reference circuit. Confirm the PFC loop compensation, current-sense threshold, startup behavior, and protection scheme against the Diodes Incorporated datasheet before using it in a production LED driver.
Recommended
Power-Quality Correction Module
AP1661MTR-G1 is suitable for a dedicated power-quality module that corrects current displacement and reduces harmonics in a controlled AC input stage. Boundary-conduction-mode operation makes the controller relevant to compact PFC circuits where the external inductor and switching device define much of the power-handling capability. The SOIC-8 package helps reduce board area, but it does not reduce the need for high-voltage creepage, isolation, surge protection, or EMI filtering. Confirm operating-mode boundaries and fault behavior from the manufacturer documentation, since the supplied search snippets do not expose the complete control and protection tables.
Recommended
Compact Offline Power Supply
AP1661MTR-G1 can be evaluated in a compact offline supply when a boost PFC stage is preferred ahead of a regulated DC output. Its 8-pin SOIC-8 package supports surface-mount assembly, while the external MOSFET, inductor, rectifier, sensing network, and feedback components determine practical efficiency and output capability. The controller's listed -40 °C to +85 °C range supports industrial-temperature design exploration, but the exact input-voltage window, startup ramp, current limit, and thermal behavior are not available in the supplied verified snippets. Use the manufacturer reference design to avoid unsupported assumptions during component selection and PCB layout.
Recommended
Recommended Products Summary
Engineering reference data for AP1661MTR-G1 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | AP1661P-G1 | AP1662MTR-G1 | AP1661AP-G1 | AP1661MTR-G1DI | AP1661P-E1 |
|---|---|---|---|---|---|---|
| Brand | Diodes Incorporated | Diodes Incorporated | Diodes Incorporated | Diodes Incorporated | Diodes Incorporated | Diodes Incorporated |
Key Differentiators
- Verified active lifecycle classification (vs AP1661P-G1)
- Verified RoHS status (vs AP1662MTR-G1)
- Documented 8-pin SOIC format (vs AP1661AP-G1)
- Explicit 0.800 A IOUT-related specification (vs AP1661P-G1)
- Boundary-conduction-mode identification (vs AP1662MTR-G1)
Design Notes
Design the external boost stage around the controller's verified 0.800 A IOUT-related value and 14.5 V VIN-related condition, but do not treat either snippet as a complete absolute-maximum or continuous-operating rating. Confirm the manufacturer input range, current-sense limit, switching frequency, and protection thresholds before selecting the MOSFET, inductor, rectifier, or current-sense resistor. Estimated power loss in the MOSFET, inductor, and rectifier must be checked separately at the intended line and load conditions.
Keep the switching node, MOSFET drain, boost rectifier, and inductor connections compact to minimize high-di/dt loops. Route the current-sense traces as short, guarded paths away from gate and switching-node copper, and place the sensing resistor according to the manufacturer reference layout. Feedback and compensation components should be positioned near the controller pins and isolated from high-current switching paths. These layout controls are important because the supplied data does not provide a complete pinout or layout drawing.
PFC boost converters generate high-frequency current transitions, so use continuous input filtering, a low-inductance switching loop, and an appropriate common-mode or differential-mode EMI strategy. Keep the controller ground and signal-return paths short, and validate conducted and radiated emissions with the final magnetics, MOSFET, rectifier, and enclosure. The AP1661MTR-G1 package is a controller package only; it does not provide the external filtering or shielding needed for an EMI-compliant product.
The SOIC-8 controller's own dissipation is not the primary thermal limit in a boost PFC stage; MOSFET, inductor, rectifier, and current-sense losses usually dominate. Still calculate controller temperature rise from actual supply voltage, quiescent current, gate-drive load, and ambient temperature, and use the manufacturer thermal data for the exact package. Do not infer a maximum output power or junction temperature from the distributor snippets because those values are not supplied.
A substitute MPN should not be approved from the family name alone. For AP1661P-G1, AP1661AP-G1, AP1662MTR-G1, AP1661MTR-G1DI, or AP1661P-E1, verify the SOIC-8 pin mapping, enable and fault logic, current-sense polarity, reference voltage, operating-temperature range, and package markings. Also verify that the suffix does not change qualification, lifecycle status, or ordering format. The supplied cross-reference sources establish related candidates, not complete production qualification.
Compliance Information
RoHS compliance is explicitly reported by the verified ChipDig result. REACH, AEC-Q100, lead-free, halogen-free, and conflict-minerals status are not stated in the supplied data.
