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Diodes Incorporated AP3039FNTR-G1
- Part No.:
- AP3039FNTR-G1
- Manufacturer:
- Diodes Incorporated
- Category:
- LED Drivers
- Package:
- 16-VFQFN Exposed Pad
- Datasheet:
-
AP3039FNTR-G1.pdf
- Description:
- IC LED DRIVER CTRLR 16QFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,179
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Product details
Overview
AP3039FNTR-G1 from BCD Semiconductor is a current-mode, high-voltage, low-side N-channel MOSFET boost controller designed for DC/DC conversion in single-ended primary topologies. It operates from 5V to 27V input, delivers up to 0.6A peak gate drive, supports 150kHz–1MHz adjustable switching frequency, and integrates programmable UVLO, overvoltage protection (OVP), and soft-start-enabling stable LED backlight and notebook power supply designs.
For engineers reviewing the AP3039FNTR-G1 datasheet, AP3039FNTR-G1 pinout, AP3039FNTR-G1 application, or AP3039FNTR-G1 equivalent, key selection considerations include its 500mV feedback reference, 90% max duty cycle, 20ns gate driver rise/fall times, and dual-package availability (QFN-3x3-16 and SOIC-14) with RoHS-compliant Green (G1) marking.
Technical Context
The AP3039FNTR-G1 implements current-mode control using an internal error amplifier (470µA/V transconductance), PWM comparator with slope compensation, and cycle-by-cycle current limiting via the CS pin. Its oscillator frequency is set by an external RT resistor (51kΩ–470kΩ), enabling precise timing control across temperature (±5% variation over –40°C to +85°C).
UVLO and OVP thresholds are independently programmable via resistor dividers referencing internal 1.25V comparators with 22µA hysteresis current sources. The VCC pin provides a regulated 6V supply (for VIN ≥ 8.5V) or bypassed operation (VIN < 6V), powering the gate driver, logic, and internal regulators with ≤0.75V dropout at 50mA load.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 5V to 27V - supports wide-input industrial and portable power rails without external pre-regulation. |
| Feedback Reference Voltage | 500mV ±10mV - enables precise output voltage or current regulation with minimal resistor tolerance dependency. |
| Switching Frequency Range | 150kHz to 1MHz - selectable via RT resistor for trade-off between component size (high-freq) and conduction loss (low-freq). |
| Peak Gate Drive Current | 0.6A - drives medium-size external N-MOSFETs with fast 20ns rise/fall times, reducing switching losses. |
| Max Duty Cycle | 90% - ensures sufficient off-time for boost inductor reset and stable loop control under high step-up ratios. |
| Soft-Start Current Source | 12µA - charges external SS capacitor to linearly ramp reference, limiting inrush current during startup. |
| Current Sense Threshold | 110mV typical - sets cycle-by-cycle current limit with 20mV hysteresis, protecting MOSFET and inductor during fault conditions. |
Pinout & Package
AP3039FNTR-G1 is packaged in QFN-3x3-16 with exposed thermal pad (EP), optimized for thermal performance in space-constrained boost applications. Pin mapping is validated per datasheet Rev. 1.6, Figure 2 and Table on Page 3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EN | Enable control input | Active-high logic input; must be pulled high (>2.0V) to activate controller; enables system-level sequencing. |
| VIN | Main power input | Bypassed locally to AGND; supplies internal circuitry and powers VCC regulator when VIN ≥ 8.5V. |
| VCC | Internal LDO output | Provides 6V bias for gate driver and logic; requires 0.47µF ceramic capacitor to AGND for stability. |
| OUT | MOSFET gate driver output | 0.6A peak push-pull driver with 20ns edge speed; connects directly to gate of external N-channel MOSFET. |
| PGND | Power ground return | High-current return path for MOSFET source and inductor; separated from AGND to minimize noise coupling. |
| RT | Oscillator frequency set | Connects external resistor to AGND; sets fSW from 150kHz (470kΩ) to 1MHz (51kΩ). |
| CS | Current sense input | Monitors MOSFET switch current via external shunt; triggers cycle-by-cycle current limit at 110mV. |
| AGND | Analog reference ground | Low-noise ground for FB, COMP, UVLO, OV, SS; must be star-connected and isolated from PGND. |
| SHDN | External shutdown input | Accepts error signal from external IC; pulls low (<0.5V) to disable driver and enter ultra-low IQ mode (1µA). |
| FB | Output voltage/current feedback | Compares divider voltage against 500mV reference; determines regulation setpoint for boost output. |
| COMP | Error amplifier output | Provides compensation node for Type II/III loop filter; interfaces with external RC network for stability. |
| SS | Soft-start timing node | Charged by internal 12µA current source; voltage ramp controls reference ramp rate and startup time. |
| UVLO | Input undervoltage detection | Resistor-divider input referenced to 1.25V; enables/disables controller based on VIN threshold with hysteresis. |
| OV | Overvoltage protection input | Resistor-divider input referenced to 1.25V; disables driver if output exceeds programmed OVP threshold. |
| NC | No connection | Pins 3 and 12 are unconnected in QFN-3x3-16 package; must remain floating or grounded per layout guidelines. |
| EP | Exposed thermal pad | Soldered to PCB ground plane; provides primary thermal path (θJA = 60°C/W) for power dissipation. |
Key Features
| Feature | Design Value |
|---|---|
| Programmable UVLO | Set via two external resistors; 1.25V threshold with 22µA hysteresis current enables clean start-up/shutdown sequencing. |
| Adjustable Overvoltage Protection | Configured with R3/R4 divider; 1.25V OVP threshold with hysteresis prevents false triggering during transient load steps. |
| Current-Mode Control | Uses CS pin sensing and slope compensation to deliver fast line/load transient response and inherent cycle-by-cycle current limiting. |
| Integrated 6V VCC Regulator | Reduces external component count; maintains stable gate drive and logic bias across 6V–27V input range with <0.75V dropout. |
| 90% Max Duty Cycle Limit | Prevents inductor saturation and ensures reliable off-time for boost topology operation under high input-to-output ratios. |
Applications
| LED Backlight Driver | Notebook Power Supply |
|---|---|
Use Scenario: Driving constant-current LED strings in LCD panel backlights with 12V–24V input rails. IC Role / Device Role / Timing Role: Boost controller regulating output voltage to maintain fixed LED current via FB-sensed shunt resistor. Use Value: 500mV feedback reference and cycle-by-cycle current limit ensure ±3% LED current accuracy independent of forward voltage drift. | Use Scenario: Generating 19V/3.3V auxiliary rails from 12V battery or adapter in ultraportable notebooks. IC Role / Device Role / Timing Role: Primary-side boost controller managing high-efficiency power conversion with programmable soft-start and UVLO. Use Value: Adjustable 150kHz–1MHz frequency allows optimization for small inductors (1–4.7µH) while maintaining >92% efficiency at 200mA load. |
| LCD Display Module Power | Industrial DC-DC Converter |
Use Scenario: Providing regulated 24V–33V outputs for TFT-LCD bias supplies in medical and industrial displays. IC Role / Device Role / Timing Role: High-voltage boost controller with OVP and thermal shutdown ensuring safe operation under open-load or short-circuit faults. Use Value: Programmable OVP (via OV pin) and 160°C thermal shutdown protect downstream display drivers from overvoltage damage. | Use Scenario: Building isolated or non-isolated boost converters for factory automation sensors and PLC I/O modules. IC Role / Device Role / Timing Role: Robust controller supporting –40°C to +85°C ambient with QFN thermal pad and separate AGND/PGND routing. Use Value: Dual-package option (QFN-3x3-16 and SOIC-14) enables layout flexibility for cost-sensitive or thermally demanding industrial PCBs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar boost controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM3478MM/NOPB | Fixed 1.25V FB reference; no integrated VCC LDO - requires external bias supply; 1A gate drive. | Higher gate drive supports larger MOSFETs but increases external BOM count; lacks programmable OVP. | Select when higher peak current capability is required and board space allows external bias regulation. |
| TPS40210DRCT | Wider 4.5V–30V input; includes internal 5V LDO; 1.5A gate drive; no programmable UVLO/OVP. | Supports lower VIN start-up but offers less protection configurability; higher quiescent current (3.5mA vs. 5mA). | Choose for broader input range and higher drive strength where OVP/UVLO programming is not critical. |
Compared with LM3478MM/NOPB and TPS40210DRCT, AP3039FNTR-G1 provides tighter 500mV feedback accuracy, integrated 6V VCC regulation, and fully programmable UVLO/OVP - making it optimal for cost-sensitive, thermally constrained LED and notebook boost designs requiring robust fault protection.
Availability
AP3039FNTR-G1 is available at Aetrix Electronics and suitable for LED lighting systems, notebook power supplies, LCD display modules, and industrial DC-DC converters requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for AP3039FNTR-G1 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
BCD Semiconductor Manufacturing Limited is a Shanghai-based analog and power IC designer specializing in high-performance, cost-optimized power management solutions for consumer, computing, and industrial markets.
The AP3039 belongs to BCD's high-voltage DC/DC controller product line, engineered specifically for efficient, compact boost converter implementations in space- and thermal-constrained applications such as portable displays and embedded power supplies.
FAQ
What is the minimum recommended input voltage for reliable AP3039FNTR-G1 startup?
The AP3039FNTR-G1 requires VIN ≥ 5V for normal operation, but startup depends on the UVLO threshold set by external resistors. With default 1.25V UVLO reference, VIN must exceed 1.25V × (R1 + R2)/R2. For guaranteed startup, design the divider so VIN rises above 6V before enabling EN, as VCC regulation stabilizes only above 6V input.
Can AP3039FNTR-G1 drive a P-channel MOSFET instead of N-channel?
No - AP3039FNTR-G1 is explicitly designed as a low-side N-channel MOSFET gate driver with OUT pin referenced to PGND. It lacks high-side floating driver architecture or level-shifting capability required for P-channel or high-side N-channel configurations. External bootstrap or charge-pump circuits would be needed, violating the intended topology.
How is thermal performance affected when using the QFN-3x3-16 package without exposed pad soldering?
Without proper soldering of the EP pad to a thermal ground plane, θJA degrades significantly beyond the rated 60°C/W. Measured data shows junction temperature rise exceeding 100°C/W in air, risking thermal shutdown (160°C) under 300mA gate drive loads. Minimum 4×4 mm² copper pour with ≥4 thermal vias is mandatory for full-rated operation.
Does the AP3039FNTR-G1 support synchronous rectification?
No - AP3039FNTR-G1 is a controller-only device that drives an external low-side N-channel MOSFET in boost topology. It does not generate complementary gate signals or provide timing control for a synchronous rectifier FET. Discrete Schottky diode replacement is required for synchronous operation, necessitating external timing and drive circuitry.
AP3039FNTR-G1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- 16-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- DC DC Controller
- Topology:
- Step-Up (Boost)
- Internal Switch(s):
- No
- Number of Outputs:
- 1
- Voltage - Supply (Min):
- 5V
- Voltage - Supply (Max):
- 27V
- Voltage - Output:
- -
- Current - Output / Channel:
- -
- Frequency:
- 150kHz ~ 1MHz
- Dimming:
- -
- Applications:
- Backlight
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-QFN (3x3)
AP3039FNTR-G1 FAQ
1.How can I place an order for AP3039FNTR-G1 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP3039FNTR-G1 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for AP3039FNTR-G1 reliable?
The price and inventory of AP3039FNTR-G1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP3039FNTR-G1 is usually 5 days.
3.What payment methods are accepted for AP3039FNTR-G1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP3039FNTR-G1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP3039FNTR-G1?
AP3039FNTR-G1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP3039FNTR-G1 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for AP3039FNTR-G1?
For technical support, including AP3039FNTR-G1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP3039FNTR-G1 requirements.
6.How does Aetrix verify that AP3039FNTR-G1 is sourced from the original manufacturer or authorized distributors?
All AP3039FNTR-G1 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that AP3039FNTR-G1 meets industry standards.
7.What is the process for return or replacement of AP3039FNTR-G1?
All AP3039FNTR-G1 units undergo pre-shipment inspection (PSI). If there is an issue with AP3039FNTR-G1, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The AP3039FNTR-G1 part is unused and in its original packaging.
Return procedure for AP3039FNTR-G1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AP3039FNTR-G1 Tags
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BCR402RE6327HTSA1
Infineon Technologies
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BCR430UXTSA2
Infineon Technologies
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BCR420UE6433HTMA1
Infineon Technologies
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BCR420UE6327HTSA1
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BCR421UE6327HTSA1
Infineon Technologies
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LYT1604D-TL
Power Integrations
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HV9910CLG-G
Microchip Technology
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CL2N8-G
Microchip Technology
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BCR420UW6-7
Diodes Incorporated
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BCR421UW6-7
Diodes Incorporated
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BCR420UFD-7
Diodes Incorporated
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BCR421UFD-7
Diodes Incorporated
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