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Diodes Incorporated AP3031MTR-G1
- Part No.:
- AP3031MTR-G1
- Manufacturer:
- Diodes Incorporated
- Category:
- LED Drivers
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AP3031MTR-G1.pdf
- Description:
- IC LED DRVR RGLTR PWM 1.4A 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,619
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Product details
Overview
AP3031MTR-G1 from BCD Semiconductor is a white LED step-up DC/DC converter IC designed for backlight driving in compact LCD panels. It delivers up to 260mA output current with 1.4A switch current limit, operates at fixed 1MHz PWM frequency, and supports 2.7V–16V input voltage range-enabling use in 7″–10″ LCD panels with 3×13 LED arrays.
For engineers reviewing the AP3031MTR-G1 datasheet, AP3031MTR-G1 pinout, AP3031MTR-G1 application, or AP3031MTR-G1 equivalent, key selection criteria include its 200mV feedback reference for precise LED current control, built-in OVP clamping at ~17.5V, standby-mode PWM dimming up to 25kHz, and SOIC-8 package thermal resistance of 120°C/W.
Technical Context
The AP3031 employs constant-frequency current-mode PWM control with internal ramp compensation and a 200mV precision reference error amplifier. Its cycle-by-cycle current limiting (1.4A at 60% duty) and overvoltage protection (15.5–19.5V trip) ensure robust operation under open-load or transient conditions.
It integrates soft-start (250μs), thermal shutdown (155°C), UVLO (2.7V), and dual CTRL-pin response modes: logic-low duration >0.7ms triggers soft-start; <0.7ms enables immediate standby-mode high-frequency dimming-eliminating audible noise in portable displays.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Switching Frequency | 1 MHz ±25% - enables use of ultra-small 4.7μH inductor and 0.47μF output capacitor. |
| Feedback Voltage | 200 mV ±12 mV - sets LED current via external RISET resistor (ILED = 200mV / RISET). |
| Input Voltage Range | 2.7 V to 16 V - supports single-cell Li-ion (3.0–4.2V), USB (5V), and 12V automotive accessory rails. |
| OVP Threshold | 17.5 V typical - clamps output during LED string open-circuit, preventing damage to driver or LEDs. |
| Switch Current Limit | 1.4 A at 60% duty - ensures stable boost operation across full load range without external current sensing. |
| Efficiency | 92% @ VIN=9V, IOUT=260mA - minimizes power loss and thermal stress in space-constrained backlight modules. |
| CTRL Pin Response | 0.7 ms threshold - distinguishes soft-start (≥0.7ms low) from standby-mode dimming (<0.7ms low). |
Pinout & Package
AP3031MTR-G1 is packaged in SOIC-8 (M suffix), featuring exposed pad thermal enhancement and pin-compatible layout with GND on pins 2, 3, and 6 for low-impedance grounding.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | SW | Switch node - connects to inductor and Schottky diode anode; carries high di/dt switching current. |
| 2, 3, 6 | GND | Ground return - multiple pins reduce PCB trace inductance and improve thermal dissipation. |
| 4 | FB | Feedback input - senses output current via RISET; 200mV reference enables accurate LED current regulation. |
| 5 | VIN | Input supply - requires local 10μF ceramic bypass; rated for 20V absolute max (2.7–16V operating). |
| 7 | OV | OVP sense - directly connected to output; triggers clamping when voltage exceeds 15.5–19.5V. |
| 8 | CTRL | Enable/dimming control - active-high enable; pulse-width determines soft-start vs. standby dimming mode. |
Key Features
| Feature | Design Value |
|---|---|
| High-frequency PWM dimming | Supports ≥25kHz CTRL-pin PWM - eliminates audible coil whine in portable displays and photo frames. |
| Built-in OVP protection | Clamps output at ~17.5V during open LED string - prevents overvoltage stress without external circuitry. |
| Low-feedback reference | 200mV FB voltage - reduces RISET power loss and improves current accuracy vs. higher-reference competitors. |
| Thermal shutdown | 155°C junction trip - protects device during sustained overload or poor heatsinking in SOIC-8 layout. |
| Soft-start & standby modes | 250μs internal soft-start + 0.7ms CTRL timing threshold - provides two distinct startup behaviors for system flexibility. |
Applications
| 7″–10″ LCD Panel Backlight | Digital Photo Frame |
|---|---|
Use Scenario: Driving 3×13 white LED array in thin-profile LCD modules with limited board area and thermal mass. IC Role / Device Role / Timing Role: Primary boost controller regulating constant LED current via FB pin; 1MHz switching enables compact passive component selection. Use Value: 92% efficiency at 9V input reduces heat generation in sealed enclosures, while SOIC-8 package simplifies reflow assembly. |
Use Scenario: Powering multi-color LED backlight in battery-powered photo frames requiring flicker-free dimming. IC Role / Device Role / Timing Role: Constant-current LED driver with CTRL-pin dimming interface; standby mode enables 25kHz PWM without audio noise. Use Value: Dual-mode CTRL response allows seamless transition between power-on soft-start and high-frequency brightness control. |
| GPS Receiver Display | Portable DVD Player (PDVD) |
Use Scenario: Illuminating small monochrome or color LCD in GPS units powered by 3.6V Li-ion or 5V USB. IC Role / Device Role / Timing Role: Input-voltage-flexible boost converter; UVLO (2.7V) ensures operation down to near-end-of-battery discharge. Use Value: Wide 2.7–16V input range accommodates both battery and adapter sources without redesign. |
Use Scenario: Backlighting 7″–9″ TFT-LCD in portable DVD players with variable input (5V USB, 12V car adapter). IC Role / Device Role / Timing Role: High-current boost driver with integrated OVP and thermal shutdown - critical for unattended operation in enclosed chassis. Use Value: 1.4A switch limit and 120°C/W θJA support continuous 260mA output in thermally constrained PDVD enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar white LED boost converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| RT9293BGJ6F | Fixed 1.2MHz frequency; 1.3A switch limit; no OV pin - relies on external resistor divider for OVP. | Lacks dedicated OV pin and standby-mode dimming; requires external components for open-load protection. | Choose if board space permits external OVP circuit and 1.2MHz switching is preferred over 1MHz. |
| TPS61165DRVR | 1.2MHz switching; 1.8A switch limit; integrated 50V MOSFET; analog/digital dimming support. | Higher voltage capability (50V) and current rating suit larger LED strings; more complex dimming interface. | Prefer for designs needing >17.5V OVP headroom or >260mA output; adds cost and footprint vs. AP3031MTR-G1. |
Compared with RT9293BGJ6F, AP3031MTR-G1 offers simpler OVP integration and superior dimming flexibility; versus TPS61165DRVR, it trades higher voltage/current capability for lower BOM count and smaller SOIC-8 footprint in mid-power backlight applications.
Availability
AP3031MTR-G1 is available at Aetrix Electronics and suitable for 7″–10″ LCD panel backlighting, digital photo frame illumination, and portable GPS display power management requiring stable component supply and RoHS-compliant green packaging.
Supply support for AP3031MTR-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 IC design and wafer fabrication company specializing in power management, LED drivers, and mixed-signal solutions for consumer and industrial markets.
The AP3031 belongs to BCD's white LED backlight driver product line, engineered specifically for cost-sensitive, space-constrained portable displays requiring high efficiency, integrated protection, and flexible dimming control.
FAQ
What is the maximum output current supported by AP3031MTR-G1?
The AP3031MTR-G1 regulates LED current up to 260mA in typical 3×13 LED configurations. This is achieved using the 200mV feedback reference and external RISET resistor (e.g., 769Ω for 260mA). The 1.4A internal switch current limit ensures headroom for inductor peak current under boost conversion ratios.
How does the CTRL pin distinguish between soft-start and standby modes?
The CTRL pin uses a 0.7ms timing threshold: a logic-low pulse ≥0.7ms followed by high enables soft-start (250μs ramp), protecting input capacitors and LEDs; a pulse <0.7ms enables immediate standby-mode operation, allowing direct high-frequency PWM dimming without delay or inrush.
Can AP3031MTR-G1 drive LED strings requiring >17.5V output?
No - the internal OVP circuit clamps output at 15.5–19.5V (typ. 17.5V). Attempting to exceed this risks automatic shutdown and output voltage limitation. For higher-output applications, select a driver with adjustable or higher OVP threshold, such as TPS61165DRVR (50V FET).
Is the SOIC-8 package of AP3031MTR-G1 thermally enhanced?
Yes - the SOIC-8 package (M suffix) has a thermal resistance of 120°C/W (junction-to-ambient, no heatsink), significantly lower than SOT-23-6 (265°C/W). Its pin layout includes three GND pins (2, 3, 6) and a standard exposed pad footprint, enabling effective PCB copper pour for thermal management in backlight modules.
AP3031MTR-G1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- DC DC Regulator
- Topology:
- Step-Up (Boost)
- Internal Switch(s):
- Yes
- Number of Outputs:
- 1
- Voltage - Supply (Min):
- 2.7V
- Voltage - Supply (Max):
- 16V
- Voltage - Output:
- -
- Current - Output / Channel:
- 1.4A (Switch)
- Frequency:
- 1MHz
- Dimming:
- PWM
- Applications:
- Backlight
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
AP3031MTR-G1 FAQ
1.How can I place an order for AP3031MTR-G1 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP3031MTR-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 AP3031MTR-G1 reliable?
The price and inventory of AP3031MTR-G1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP3031MTR-G1 is usually 5 days.
3.What payment methods are accepted for AP3031MTR-G1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP3031MTR-G1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP3031MTR-G1?
AP3031MTR-G1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP3031MTR-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 AP3031MTR-G1?
For technical support, including AP3031MTR-G1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP3031MTR-G1 requirements.
6.How does Aetrix verify that AP3031MTR-G1 is sourced from the original manufacturer or authorized distributors?
All AP3031MTR-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 AP3031MTR-G1 meets industry standards.
7.What is the process for return or replacement of AP3031MTR-G1?
All AP3031MTR-G1 units undergo pre-shipment inspection (PSI). If there is an issue with AP3031MTR-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 AP3031MTR-G1 part is unused and in its original packaging.
Return procedure for AP3031MTR-G1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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