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Diodes Incorporated AP3039AMTR-G1
- Part No.:
- AP3039AMTR-G1
- Manufacturer:
- Diodes Incorporated
- Category:
- LED Drivers
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AP3039AMTR-G1.pdf
- Description:
- IC LED DRIVER CTRLR 50MA 14SO
- Quantity:
- Payment:
- Shipping:
Inventory:4,266
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Product details
Overview
AP3039AMTR-G1 from Diodes Incorporated is a current-mode, high-voltage, low-side N-channel MOSFET boost controller optimized for LED lighting and LCD display power supplies. It operates from 5V to 27V input, delivers 0.6A peak gate drive, supports 150kHz–1MHz adjustable switching frequency, features programmable UVLO and OVP, and integrates cycle-by-cycle current limiting with 500mV feedback reference.
For engineers reviewing the AP3039AMTR-G1 datasheet, AP3039AMTR-G1 pinout, AP3039AMTR-G1 application, or AP3039AMTR-G1 equivalent, key selection considerations include its SOIC-14 package compatibility, 90% max duty cycle, soft-start capacitor programmability, thermal shutdown at +160°C, and dual-package availability (QFN-3x3-16/SOIC-14) for layout flexibility in space-constrained DC/DC designs.
Technical Context
The AP3039AMTR-G1 implements fixed-frequency current-mode control using an internal error amplifier (470μA/V transconductance), external RT resistor for oscillator tuning, and CS pin sensing for per-cycle current limit. Its VCC linear regulator (6V ±0.5V) powers the gate driver and auto-bypasses VIN when input drops below 8.5V.
UVLO and OVP thresholds are set via external resistor dividers referencing internal 1.25V and 1.25V references respectively, with 22μA hysteresis current sources enabling precise turn-on/turn-off windows. The 12mA soft-start current source charges an external capacitor to control ramp-up time and limit inrush current during startup.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 5V to 27V - supports wide-input industrial and notebook supply rails without pre-regulation |
| Switching Frequency | 150kHz to 1MHz - adjustable via RT resistor for EMI optimization and inductor size trade-offs |
| Feedback Reference | 500mV ±10mV - enables accurate output voltage or LED current regulation with minimal external components |
| Peak Gate Drive Current | 0.6A - drives medium-size N-MOSFETs directly, reducing need for external drivers in mid-power boost stages |
| Max Duty Cycle | 90% - allows high step-up ratios (e.g., 12V→33V) while maintaining stable current-mode operation |
| Current Sense Threshold | 110mV typ - sets overcurrent protection point with <±20mV tolerance for consistent cycle-by-cycle limiting |
| Soft-Start Current | 12mA - provides predictable, capacitor-programmable startup timing to prevent output overshoot and stress |
Pinout & Package
AP3039AMTR-G1 is supplied in SOIC-14 package (JEDEC MS-012), with exposed pad omitted-thermal dissipation relies on standard PCB copper area under pins. Pin 1 is marked by dot; pin count and function mapping match the 14-pin variant of the dual-package family.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (EN) | Enable control input | Active-high logic input; must be ≥2.0V to activate controller; ties to system power sequencing |
| 2 (VIN) | Main input supply | Bypassed locally with ceramic capacitor; powers internal circuitry and VCC regulator when VIN ≥8.5V |
| 4 (VCC) | Internal LDO output | 6V regulated supply for gate driver; connects to VIN if input <6V; requires 0.47μF AGND bypass |
| 5 (OUT) | MOSFET gate driver output | 0.6A peak sink/source; 20ns rise/fall into 1nF load; drives external low-side N-MOSFET switch |
| 6 (PGND) | Power ground return | High-current return path for MOSFET source and internal driver; separate from AGND for noise isolation |
| 7 (RT) | Oscillator timing node | Connects to GND via resistor (51kΩ–470kΩ) to set fSW; internal 1.25V reference enables precise frequency programming |
| 8 (CS) | Current sense input | Monitors MOSFET source current via shunt; triggers cycle-by-cycle limit at 110mV threshold |
| 9 (AGND) | Analog reference ground | Low-noise ground for FB, COMP, UVLO, OV; must be star-connected to minimize feedback errors |
| 10 (SHDN) | External shutdown input | Active-low fault interface; pulls low to disable driver; compatible with current-matched ICs |
| 11 (FB) | Voltage feedback input | Compares output divider voltage to 500mV reference; sets regulated output or LED current via R5/R6 |
| 12 (COMP) | Error amplifier output | Provides compensation node for Type II/III loop stability; connects to RC network between FB and AGND |
| 13 (SS) | Soft-start timing node | Charged by 12mA current source; external capacitor sets ramp time to avoid output overshoot at startup |
| 14 (UVLO) | Programmable undervoltage lockout | Resistor divider from VIN and GND sets turn-on threshold (1.25V ref); 22μA hysteresis ensures clean release |
| 15 (OV) | Overvoltage protection input | Resistor divider from output and GND sets OVP trip point (1.25V ref); disables driver above threshold |
Key Features
| Feature | Design Value |
|---|---|
| Adjustable switching frequency | 150kHz–1MHz via single RT resistor-enables EMI compliance and inductor optimization across 5:1 voltage ratio designs |
| Programmable UVLO/OVP | Independent resistor-divider thresholds with 22μA hysteresis-supports custom input brown-out and output overvoltage safety windows |
| Integrated 6V VCC LDO | Self-powered gate driver with automatic VIN bypass below 8.5V-eliminates need for auxiliary bias supply in wide-input applications |
| 0.6A peak gate drive | Direct drive capability for MOSFETs up to Qg ≈ 12nC at 500kHz-reduces BOM count and layout complexity in ≤20W boost converters |
| Cycle-by-cycle current limit | 110mV CS threshold with fast response-prevents MOSFET failure during short-circuit or overload without external protection circuitry |
Applications
| LED Backlight Driver | Notebook DC/DC Boost |
|---|---|
|
Use Scenario: Driving parallel white LEDs in 10–17" LCD panels requiring constant-current regulation and dimming support. IC Role / Device Role / Timing Role: Primary boost controller managing inductor current, feedback loop, and OVP to maintain stable LED string voltage and current. Use Value: 500mV FB reference and cycle-by-cycle current limit enable ±3% LED current accuracy independent of forward voltage variation across temperature and batch. |
Use Scenario: Generating 19V/20V rail from 12V main battery in ultrabook power architectures with tight thermal constraints. IC Role / Device Role / Timing Role: High-efficiency boost stage delivering regulated output with programmable soft-start and thermal shutdown for system reliability. Use Value: 90% max duty cycle and 1MHz capability allow compact inductor sizing (22μH), while 160°C thermal shutdown protects against sustained overload conditions. |
| LCD Display Module Supply | Industrial Panel Lighting |
|
Use Scenario: Powering TFT-LCD gate drivers and source drivers requiring stable 24–33V bias rails in kiosk and HMI displays. IC Role / Device Role / Timing Role: Fixed-frequency current-mode controller regulating output voltage with UVLO and OVP for robust start-up and fault recovery. Use Value: Adjustable UVLO (via resistors) ensures reliable operation across 5–27V input range, including degraded battery or unregulated adapter inputs. |
Use Scenario: Providing constant-current LED strings in outdoor signage and factory floor lighting where ambient temperature exceeds 85°C. IC Role / Device Role / Timing Role: Boost controller with extended junction temperature rating (+150°C) and thermal hysteresis for continuous high-temperature operation. Use Value: Thermal shutdown at +160°C with +20°C hysteresis prevents latch-up and enables safe auto-recovery after transient overheating events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar boost controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AP3041MTR-G1 | Same pinout and feature set; updated revision with improved thermal performance and tighter OVP tolerance (±1.5% vs ±2.5%) | Drop-in replacement for new designs; recommended where higher OVP accuracy or enhanced thermal margin is required | Select AP3041 for new designs-Diodes explicitly marks AP3039 as "NOT RECOMMENDED FOR NEW DESIGN" in datasheet |
| LM3478MM/NOPB | Wider input range (2.97–40V), but no integrated VCC LDO-requires external bias supply; 1.25V FB reference vs 0.5V | Suitable for higher-input systems (e.g., 24V industrial rails); less optimal for low-component-count LED current regulation | Choose LM3478 only if input exceeds 27V or if existing design uses 1.25V feedback architecture; adds BOM complexity |
Compared with AP3039AMTR-G1, AP3041 offers identical functionality with tighter specifications and official new-design endorsement, while LM3478 extends input range at the cost of added external components and reduced LED current regulation precision due to higher FB reference voltage.
Availability
AP3039AMTR-G1 is available at Aetrix Electronics and suitable for LED backlighting, notebook power conversion, and LCD display module supply requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for AP3039AMTR-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
Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, specializing in power management, signal integrity, and protection solutions for industrial, computing, and consumer markets.
The AP3039 belongs to Diodes' high-voltage DC/DC controller product line, designed specifically for cost-sensitive, medium-power boost applications in lighting and portable display systems where integration, thermal robustness, and programmability are critical.
FAQ
What is the maximum recommended output voltage for AP3039AMTR-G1?
The AP3039AMTR-G1 does not impose a hard limit on output voltage; instead, it supports any boost ratio achievable within its 90% max duty cycle and external MOSFET/voltage rating constraints. Typical applications target 24–33V outputs (e.g., LED strings), but higher voltages are feasible with appropriate magnetics and layout. OVP protection must be externally configured to match the desired output ceiling.
Can AP3039AMTR-G1 drive a P-channel MOSFET?
No-AP3039AMTR-G1 is a low-side N-channel MOSFET controller only. Its OUT pin sources/sinks current to drive the gate of an N-MOSFET connected between PGND and the inductor. Driving a P-channel high-side switch would require inverted logic, level shifting, and incompatible gate drive architecture not supported by this device.
How is soft-start time calculated for AP3039AMTR-G1?
Soft-start time tSS is determined by tSS = CSS × 0.5V / 12mA, where CSS is the capacitor connected from SS pin to AGND. For example, a 100nF capacitor yields ~4.2ms ramp time. This linear voltage ramp controls the COMP pin voltage, gradually increasing duty cycle to limit inrush current and output overshoot.
Is AP3039AMTR-G1 pin-compatible with AP3041MTR-G1?
Yes-AP3039AMTR-G1 (SOIC-14) and AP3041MTR-G1 share identical pinout, electrical characteristics, and functional block diagram. Diodes confirms AP3041 as the direct, enhanced successor with improved OVP accuracy and thermal specs, making it a drop-in replacement for both new and legacy designs requiring long-term supply assurance.
AP3039AMTR-G1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- 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:
- 1MHz
- Dimming:
- -
- Applications:
- Backlight
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-SO
AP3039AMTR-G1 FAQ
1.How can I place an order for AP3039AMTR-G1 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP3039AMTR-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 AP3039AMTR-G1 reliable?
The price and inventory of AP3039AMTR-G1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP3039AMTR-G1 is usually 5 days.
3.What payment methods are accepted for AP3039AMTR-G1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP3039AMTR-G1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP3039AMTR-G1?
AP3039AMTR-G1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP3039AMTR-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 AP3039AMTR-G1?
For technical support, including AP3039AMTR-G1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP3039AMTR-G1 requirements.
6.How does Aetrix verify that AP3039AMTR-G1 is sourced from the original manufacturer or authorized distributors?
All AP3039AMTR-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 AP3039AMTR-G1 meets industry standards.
7.What is the process for return or replacement of AP3039AMTR-G1?
All AP3039AMTR-G1 units undergo pre-shipment inspection (PSI). If there is an issue with AP3039AMTR-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 AP3039AMTR-G1 part is unused and in its original packaging.
Return procedure for AP3039AMTR-G1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AP3039AMTR-G1 Tags
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