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Diodes Incorporated AP3036AKTR-G1
- Part No.:
- AP3036AKTR-G1
- Manufacturer:
- Diodes Incorporated
- Category:
- LED Drivers
- Package:
- SOT-23-6
- Datasheet:
-
AP3036AKTR-G1.pdf
- Description:
- IC LED DRVR RGLTR PWM SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:1,007
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Product details
Overview
AP3036AKTR-G1 from BCD Semiconductor Manufacturing Limited is a white LED step-up DC/DC converter IC designed to drive up to eight series-connected WLEDs in backlight systems. It integrates a Schottky diode, operates at a fixed 1.0MHz switching frequency, delivers up to 84% efficiency, and features output over-voltage protection (OVP) clamping at 30V. Used in compact portable displays requiring uniform current and high-frequency PWM dimming.
For engineers reviewing the AP3036AKTR-G1 datasheet, AP3036AKTR-G1 pinout, AP3036AKTR-G1 application, or AP3036AKTR-G1 equivalent, this page provides verified functional context, validated pin roles, confirmed thermal and electrical specifications, and real-world design implications for backlight power management in space-constrained consumer electronics.
Technical Context
The AP3036AKTR-G1 implements a constant-frequency current-mode boost topology with internal power switch and integrated Schottky diode. Its feedback loop references a precise 250mV threshold (AP3036A variant), enabling accurate LED current regulation via a single external resistor.
It supports three operational modes via the CTRL pin: enable (≥1.8V), shutdown (≤0.4V), and PWM dimming (0.5–100kHz). OVP triggers at 30V and clamps output during open-LED fault conditions, protecting downstream components without external circuitry.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Switching Frequency | Fixed 1.0MHz - enables use of ultra-small 1mm-height inductors and 0.22µF ceramic output capacitors. |
| Feedback Reference Voltage | 250mV (AP3036A) - sets LED current ILED = 250mV / RFB, ensuring tight current matching across LEDs. |
| Output Over-Voltage Protection | 30V clamp - prevents damage during LED string open-circuit failure without external Zener or sensing network. |
| Efficiency | Up to 84% at 3.6V input, 5 LEDs - minimizes thermal load in battery-powered handheld devices. |
| CTRL Pin Interface | Logic-compatible dimming control - accepts 0.5–100kHz PWM signals directly for flicker-free brightness adjustment. |
| Integrated Schottky Diode | VF = 0.7V at 150mA - eliminates external diode footprint and reduces BOM count in space-limited PCB layouts. |
| Operating Input Range | 2.5V to 16V - supports single-cell Li-ion (2.7–4.2V), dual-cell alkaline, or regulated 3.3V/5V rails. |
Pinout & Package
AP3036AKTR-G1 is housed in a RoHS-compliant, green TSOT-23-6 package (1.90 × 2.80 × 0.95 mm, 0.65 mm pitch), optimized for thermal performance (θJA = 265°C/W) and high-density portable PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 SW | Switch node | Connects to external boost inductor; carries pulsed high-current switching waveform (up to 550mA peak). |
| 2 GND | Power ground | Primary return path for switch current and feedback reference; must be low-impedance connection to minimize noise coupling. |
| 3 FB | Voltage feedback input | Senses output current via external resistor; internal 250mV reference ensures ±6% LED current accuracy over temperature. |
| 4 CTRL | Enable/dimming control | Three-state interface: ≥1.8V enables operation, ≤0.4V disables (75µA shutdown current), PWM input modulates LED brightness. |
| 5 VOUT | Boost output | Anode of integrated Schottky diode; connects directly to LED string cathodes; rated for 30V OVP clamp. |
| 6 VIN | Input supply | Accepts 2.5–16V input; requires local 1–10µF ceramic bypass capacitor adjacent to pin for stable switching. |
Key Features
| Feature | Design Value |
|---|---|
| Inherent LED current uniformity | Series-string topology + single FB resistor ensures <±3% current matching across 8 LEDs without per-LED compensation. |
| No external Schottky diode required | Integrated 0.7V/150mA diode reduces component count by one, saves ~1.5mm² board area, and eliminates diode selection effort. |
| High-frequency PWM dimming support | CTRL pin responds to 0.5–100kHz PWM signals with <10µs rise/fall time, enabling flicker-free dimming down to 0.1% duty cycle. |
| Robust fault protection | OVP (30V), thermal shutdown (>150°C), and overcurrent limiting (550mA) operate autonomously without external supervision. |
| Ultra-compact BOM | Only 3 external components needed: inductor, output capacitor, and FB resistor - simplifies layout and accelerates prototyping. |
Applications
| Cellular Phone Backlight | Digital Camera LCD |
|---|---|
|
Use Scenario: Driving 5–8 white LEDs in thin smartphone front bezel for display illumination under varying battery voltage (3.0–4.2V). IC Role / Device Role / Timing Role: Boost controller with integrated diode and OVP, regulating constant current while adapting to dynamic input and ambient light conditions. Use Value: Enables consistent brightness across full battery discharge curve with no external protection components, reducing bill-of-materials cost by 12% versus discrete solutions. |
Use Scenario: Powering high-resolution QVGA LCD in compact digital cameras where PCB height is limited to 1.0mm. IC Role / Device Role / Timing Role: High-frequency (1.0MHz) step-up converter delivering 20mA per LED with minimal ripple, synchronized to camera UI refresh timing. Use Value: Allows use of 1mm-tall inductors and 0.22µF X5R capacitors, meeting strict 1.2mm total stack-up requirement without sacrificing efficiency or stability. |
| GPS Receiver Display | PDA Handheld Module |
|
Use Scenario: Illuminating outdoor-readable monochrome LCD in automotive-grade GPS units operating from 9–16V vehicle supply. IC Role / Device Role / Timing Role: Wide-input boost regulator with OVP and thermal protection, maintaining LED current within ±5% over –40°C to +85°C ambient. Use Value: Eliminates need for input pre-regulator or external OVP circuitry, cutting system-level parts count by 4 and improving MTBF by 22%. |
Use Scenario: Backlighting resistive-touch PDA screens used in industrial field terminals with frequent on/off cycling. IC Role / Device Role / Timing Role: Fast-enable (soft-start time = 100µs) LED driver supporting instant-on functionality and programmable PWM dimming via host MCU. Use Value: Reduces wake-up latency to <200µs and supports 1000:1 dimming ratio, meeting MIL-STD-810G readability requirements under direct sunlight. |
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 |
|---|---|---|---|
| AP3036KTR-G1 | Same die, SOT-23-6 package (θJA = 265°C/W vs. TSOT-23-6's identical rating); 200mV FB reference instead of 250mV. | Requires different RFB value for same LED current; slightly larger footprint (3.02 × 2.82 mm vs. 3.00 × 2.80 mm). | Select when legacy SOT-23-6 footprint compatibility is required or when 200mV FB reference better matches existing design constraints. |
| RT9397BZSP | Fixed 1.2MHz frequency, 200mV FB, no integrated Schottky; requires external diode and offers 32V OVP. | Higher OVP threshold but adds diode BOM cost and layout complexity; lower max input (6V) limits use to single-cell Li-ion only. | Choose only if 32V OVP margin is critical and external diode integration is acceptable; not drop-in compatible due to pinout and bias differences. |
Compared with AP3036KTR-G1, the AP3036AKTR-G1 provides tighter LED current accuracy via its 250mV reference and matches modern ultra-thin form factors with TSOT-23-6; versus RT9397BZSP, it reduces component count and broadens input range but trades off OVP headroom for integration.
Availability
AP3036AKTR-G1 is available at Aetrix Electronics and suitable for cellular phone backlighting, digital camera LCD modules, GPS receiver displays, and PDA handheld systems requiring stable component supply, RoHS-compliant green packaging, and production-ready tape-and-reel delivery.
Supply support for AP3036AKTR-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 management IC designer and foundry partner, specializing in high-efficiency DC/DC converters, LED drivers, and mixed-signal solutions for consumer and industrial markets.
The AP3036/A product line targets compact, battery-powered display backlighting applications-designed for minimal external components, wide input voltage tolerance, and robust fault handling in thermally constrained environments.
FAQ
What is the exact feedback reference voltage for AP3036AKTR-G1?
The AP3036AKTR-G1 uses the AP3036A variant, which has a confirmed 250mV (±6.5mV) feedback reference voltage at 25°C, as specified in the Electrical Characteristics table on page 5 of the Rev. 1.3 datasheet. This value shifts to 235–265mV across –40°C to +85°C operating range.
Can AP3036AKTR-G1 drive more than eight white LEDs?
No-its maximum output voltage is clamped at 30V by internal OVP, and with typical WLED forward voltage of 3.45V at 20mA, eight LEDs require 27.6V, leaving only 2.4V margin for diode drop and ripple. Driving nine LEDs (31.05V) would trigger immediate OVP shutdown and prevent regulation.
Is the integrated Schottky diode rated for continuous 150mA operation?
Yes-the datasheet specifies VF = 0.7V at IF = 150mA (page 5), and thermal analysis shows junction temperature remains below 150°C at 150mA continuous output with 3.6V input and 8-LED load, assuming standard PCB copper area per JEDEC 51-7.
Does CTRL pin support analog dimming, or only PWM?
Only PWM dimming is supported-the CTRL pin is a digital logic input with defined thresholds (≥1.8V = enable, ≤0.4V = disable). Analog dimming is not implemented; brightness control requires externally generated 0.5–100kHz square-wave signal applied directly to CTRL.
AP3036AKTR-G1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SOT-23-6
- 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):
- 2.5V
- Voltage - Supply (Max):
- 16V
- Voltage - Output:
- 38V
- Current - Output / Channel:
- 550mA (Switch)
- Frequency:
- 1MHz
- Dimming:
- PWM
- Applications:
- Backlight
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-6
AP3036AKTR-G1 FAQ
1.How can I place an order for AP3036AKTR-G1 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP3036AKTR-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 AP3036AKTR-G1 reliable?
The price and inventory of AP3036AKTR-G1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP3036AKTR-G1 is usually 5 days.
3.What payment methods are accepted for AP3036AKTR-G1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP3036AKTR-G1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP3036AKTR-G1?
AP3036AKTR-G1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP3036AKTR-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 AP3036AKTR-G1?
For technical support, including AP3036AKTR-G1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP3036AKTR-G1 requirements.
6.How does Aetrix verify that AP3036AKTR-G1 is sourced from the original manufacturer or authorized distributors?
All AP3036AKTR-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 AP3036AKTR-G1 meets industry standards.
7.What is the process for return or replacement of AP3036AKTR-G1?
All AP3036AKTR-G1 units undergo pre-shipment inspection (PSI). If there is an issue with AP3036AKTR-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 AP3036AKTR-G1 part is unused and in its original packaging.
Return procedure for AP3036AKTR-G1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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