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Diodes Incorporated AP3019AKTR-G1
- Part No.:
- AP3019AKTR-G1
- Manufacturer:
- Diodes Incorporated
- Category:
- LED Drivers
- Package:
- SOT-23-6
- Datasheet:
-
AP3019AKTR-G1.pdf
- Description:
- IC LED DRVR RGLTR PWM SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:38,406
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Product details
Overview
AP3019AKTR-G1 from Diodes Incorporated is a white LED step-up DC/DC converter IC designed for backlighting up to eight series-connected WLEDs in portable displays. It integrates a Schottky diode, operates at a fixed 1.2MHz switching frequency, delivers 200mV feedback reference voltage, supports 2.5–16V input, and provides output over-voltage protection (OVP) clamping at 30V.
For engineers reviewing the AP3019AKTR-G1 datasheet, AP3019AKTR-G1 pinout, AP3019AKTR-G1 application, or AP3019AKTR-G1 equivalent, key selection criteria include its integrated Schottky diode, 200mV FB threshold accuracy, CTRL pin dimming control interface, OVP response under open-LED fault, and compatibility with 1mm-height inductors and 0.22μF ceramic output capacitors.
Technical Context
The AP3019AKTR-G1 employs constant-frequency current-mode PWM control with internal ramp compensation and a 200mV precision error amplifier reference. Its functional block includes an oscillator, SR latch, current-sense amplifier, and OVP comparator that clamps VOUT at 30V during LED string open-circuit conditions.
Startup uses internal soft-start with ~300μs ramp time; shutdown quiescent current is 2–6μA when CTRL ≤ 0.5V. The switch transistor supports up to 550mA peak current (duty-cycle dependent), with VCE(SAT) ≤ 360mV at 250mA and integrated Schottky forward drop ≤ 0.7V at 150mA.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Switching Frequency | Fixed 1.2 MHz - enables use of compact 22μH inductor and 0.22μF X5R/X7R ceramic output capacitor. |
| Feedback Reference Voltage | 200 mV ±12 mV - sets LED current via external resistor R1; accuracy maintained across –40°C to +85°C. |
| OVP Threshold | 30 V - clamps output during LED string open-circuit, preventing damage to downstream components. |
| CTRL Pin Logic Threshold | High ≥1.8 V, Low ≤0.5 V - enables direct PWM dimming up to 2 kHz or DC voltage-based brightness control. |
| Integrated Schottky Drop | ≤0.7 V at 150 mA - eliminates need for external diode, reducing BOM count and PCB area. |
| Efficiency | Up to 84% - achieved at 3.6V input, 8×WLED (3.45V each), 20mA, with 22μH inductor and 0.22μF output cap. |
| Operating Input Range | 2.5 V to 16 V - supports single-cell Li-ion (3.0–4.2V), dual-cell alkaline, or regulated 5V/12V rails. |
Pinout & Package
AP3019AKTR-G1 is packaged in RoHS-compliant, green, tape-and-reel SOT-23-6 (2.82 × 2.65 × 1.3 mm) with gull-wing leads and pin 1 marked by dot or notch. Thermal resistance θJA = 265°C/W (no heatsink); θJC = 60°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 SW | Switch node | Connects to inductor; carries pulsed high-side switch current up to 550mA peak. |
| 2 GND | Power ground | Primary return path for switch current and internal circuitry; must be low-impedance PCB plane. |
| 3 FB | Voltage feedback input | Senses output current via resistor divider; regulates LED current by comparing to 200mV internal reference. |
| 4 CTRL | Enable/dimming control | Logic-level input: ≥1.8V enables operation; ≤0.5V disables; PWM signal enables analog-like dimming. |
| 5 VOUT | Boost output | Anode of integrated Schottky diode; connects to LED string cathode; clamped at 30V during OVP event. |
| 6 VIN | Input supply | Accepts 2.5–16V; requires local 1μF ceramic bypass capacitor placed near pin for stability and EMI reduction. |
Key Features
| Feature | Design Value |
|---|---|
| Inherently uniform LED current | Series-string topology with single FB loop ensures identical current through all 8 LEDs without matching or balancing circuits. |
| No external Schottky diode required | On-chip Schottky reduces component count, layout area, and thermal stress vs. discrete diode solutions. |
| Output over-voltage protection | Internal clamp limits VOUT to 30V during open-LED faults, protecting LEDs and surrounding circuitry. |
| 1.2MHz fixed-frequency operation | Enables use of miniature 1mm-height inductors and small 0.22μF ceramic capacitors-ideal for space-constrained handhelds. |
| Soft-start circuit | 300μs internal ramp prevents inrush current spikes during power-up, reducing input rail disturbance. |
Applications
| Cellular Phones | Digital Cameras |
|---|---|
|
Use Scenario: Backlighting for 3.5–5-inch AMOLED or TFT LCD panels in smartphones with single-cell Li-ion battery supply. IC Role / Device Role / Timing Role: Boost controller regulating constant 20mA current across 6–8 series WLEDs; manages dynamic dimming via CTRL pin PWM. Use Value: Enables thin form factor via 1mm-height inductor support and eliminates external diode, reducing bill-of-materials cost by $0.03–$0.05 per unit. |
Use Scenario: High-brightness flash-assisted LCD viewfinder and rear display in compact digital cameras powered by dual AA/AAA or Li-ion. IC Role / Device Role / Timing Role: Step-up regulator delivering stable 20mA per LED with fast CTRL-pin response for burst-mode flash synchronization. Use Value: 84% efficiency at 3.6V input extends battery life by >12% versus lower-efficiency alternatives; OVP prevents display damage during LED failure. |
| LCD Modules | GPS Receivers |
|
Use Scenario: Industrial or automotive-grade monochrome/color LCD modules requiring robust open-circuit fault tolerance and wide temperature operation. IC Role / Device Role / Timing Role: Primary LED driver with –40°C to +85°C guaranteed performance; FB pin tolerates ±12mV drift over full range. Use Value: Integrated OVP and 30V clamp eliminate need for external TVS, simplifying design qualification for EN 55032/55024 compliance. |
Use Scenario: Outdoor GPS navigation devices using transflective LCDs needing consistent brightness across varying ambient light and battery voltage. IC Role / Device Role / Timing Role: Constant-current boost driver supporting 2.5–16V input range; CTRL pin accepts 0–3.3V logic for seamless MCU-integrated dimming. Use Value: 200mV FB reference accuracy ensures <±5% LED current variation across input voltage and temperature-critical for readable outdoor display luminance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar white LED boost driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AP3018AKTR-G1 | Same package and pinout; lower max input voltage (12V vs. 16V); no OVP circuit. | Suitable only for ≤12V systems; lacks open-circuit protection-requires external OVP for reliability-critical designs. | Select only if input never exceeds 12V and system-level fault protection is already implemented externally. |
| RT9397BZSP | Fixed 1.3MHz frequency; 200mV FB reference; requires external Schottky diode; no integrated OVP. | Higher BOM count and board area; dimming via CTRL pin only (no DC voltage option); no internal OVP clamp. | Prefer when higher switching frequency is needed for noise filtering, but accept added component cost and reduced fault resilience. |
Compared with AP3018AKTR-G1 and RT9397BZSP, the AP3019AKTR-G1 uniquely combines 16V input tolerance, integrated Schottky, and 30V OVP in SOT-23-6-making it optimal for battery-powered portable displays where size, reliability, and single-supply flexibility are critical.
Availability
AP3019AKTR-G1 is available at Aetrix Electronics and suitable for cellular phone backlighting, digital camera LCD modules, GPS receiver displays, and industrial handheld terminals requiring stable component supply and long-term manufacturability.
Supply support for AP3019AKTR-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 ICs, headquartered in Plano, Texas, with design, manufacturing, and sales operations across Asia, Europe, and North America.
The AP3019A belongs to Diodes' LED backlight driver product line, engineered specifically for space-constrained, battery-powered portable displays requiring high efficiency, integrated protection, and minimal external components.
FAQ
What is the maximum number of white LEDs the AP3019AKTR-G1 can drive?
The AP3019AKTR-G1 is specified to drive up to eight white LEDs in series, assuming typical forward voltage of 3.45V per LED at 20mA. With 16V maximum input and 30V OVP clamp, the total forward voltage must remain below ~28V to maintain regulation and avoid triggering OVP during normal operation.
Does the AP3019AKTR-G1 require an external Schottky diode?
No. The AP3019AKTR-G1 integrates a Schottky diode on-die, connecting internally between the SW node and VOUT. This eliminates the need for an external diode, reducing PCB area, BOM count, and thermal management complexity in compact portable designs.
How does the CTRL pin support dimming functionality?
The CTRL pin supports three dimming methods: (1) logic-level enable/disable (≥1.8V = on, ≤0.5V = off), (2) direct PWM input up to 2kHz for pulse-width-controlled brightness, and (3) DC voltage injection into FB via resistor divider for analog-style dimming without flicker or EMI concerns.
What happens during an open-LED fault condition?
During an open-LED fault, the AP3019AKTR-G1 activates its internal over-voltage protection, clamping VOUT at 30V. The device reduces switching frequency and minimizes input current draw to prevent damage to the IC, inductor, or remaining circuitry while maintaining safe thermal operation.
AP3019AKTR-G1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SOT-23-6
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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:
- -
- Current - Output / Channel:
- 550mA (Switch)
- Frequency:
- 1.2MHz
- Dimming:
- PWM
- Applications:
- Backlight
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-6
AP3019AKTR-G1 FAQ
1.How can I place an order for AP3019AKTR-G1 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP3019AKTR-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 AP3019AKTR-G1 reliable?
The price and inventory of AP3019AKTR-G1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP3019AKTR-G1 is usually 5 days.
3.What payment methods are accepted for AP3019AKTR-G1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP3019AKTR-G1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP3019AKTR-G1?
AP3019AKTR-G1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP3019AKTR-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 AP3019AKTR-G1?
For technical support, including AP3019AKTR-G1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP3019AKTR-G1 requirements.
6.How does Aetrix verify that AP3019AKTR-G1 is sourced from the original manufacturer or authorized distributors?
All AP3019AKTR-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 AP3019AKTR-G1 meets industry standards.
7.What is the process for return or replacement of AP3019AKTR-G1?
All AP3019AKTR-G1 units undergo pre-shipment inspection (PSI). If there is an issue with AP3019AKTR-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 AP3019AKTR-G1 part is unused and in its original packaging.
Return procedure for AP3019AKTR-G1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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