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Diodes Incorporated AP3019AKTTR-G1
- Part No.:
- AP3019AKTTR-G1
- Manufacturer:
- Diodes Incorporated
- Category:
- LED Drivers
- Package:
- SOT-23-6 Thin, TSOT-23-6
- Datasheet:
-
AP3019AKTTR-G1.pdf
- Description:
- IC LED DRVR RGLTR PWM TSOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:3,736
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Product details
Overview
AP3019AKTTR-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 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 AP3019AKTTR-G1 datasheet, AP3019AKTTR-G1 pinout, AP3019AKTTR-G1 application, or AP3019AKTTR-G1 equivalent, key selection considerations include its integrated Schottky diode, 200mV FB threshold accuracy, CTRL pin dimming control interface, and SOT-23-6/TSOT-23-6 package compatibility with space-constrained backlight designs.
Technical Context
The AP3019AKTTR-G1 employs constant-frequency current-mode PWM control with internal ramp compensation, enabling stable regulation across line and load variations. Its error amplifier compares FB voltage against a trimmed 200mV reference, while the OVP circuit monitors VOUT and reduces switching frequency during open-circuit conditions to limit power dissipation.
Soft-start is implemented via an internal capacitor, limiting inrush current during startup; CTRL pin accepts logic-level enable/disable (≥1.8V high, ≤0.5V low) or PWM signals up to 2kHz for analog/digital dimming. The integrated N-channel MOSFET switch features 360mV typical VCE(SAT) at 250mA and supports up to 93% duty cycle.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Switching Frequency | Fixed 1.2 MHz - enables use of ultra-small 1mm-height inductors and 0.22μF ceramic output capacitors. |
| Feedback Reference Voltage | 200 mV ±6 mV - sets LED current via external resistor (ILED = 0.2 V / RFB), independent of LED VF variation. |
| OVP Threshold | 30 V - clamps output during LED string open-circuit failure, reducing power stress and preventing damage to downstream components. |
| Efficiency | Up to 84% at 20 mA, 8-LED string, 3.6 V input - minimizes thermal load in battery-powered handheld devices. |
| CTRL Pin Logic Threshold | Enable ≥1.8 V, Disable ≤0.5 V - compatible with 1.8 V/3.3 V GPIO without level-shifting; supports direct PWM dimming up to 2 kHz. |
| Integrated Schottky Drop | 0.7 V at 150 mA - eliminates need for external diode, reducing BOM count and PCB footprint in compact backlight solutions. |
| Quiescent Current | 2.5 mA typical (active), 4.0 μA typical (shutdown) - extends battery life in always-on display systems with dynamic enable control. |
Pinout & Package
AP3019AKTTR-G1 is packaged in RoHS-compliant TSOT-23-6 - a 2.8 mm × 2.9 mm × 0.95 mm thin-profile surface-mount package with exposed pad for enhanced thermal performance. Pin numbering follows standard top-view orientation with pin 1 marked by dot.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 SW | Switch node | Connects to external boost inductor; carries pulsed high-current switching waveform; requires low-inductance layout. |
| 2 GND | Power ground | Main return path for switch current and IC bias; must be tied to low-impedance ground plane adjacent to exposed pad. |
| 3 FB | Voltage feedback input | Senses output current via external resistor; 200 mV reference enables precise LED current setting without trimming. |
| 4 CTRL | Enable/dimming control | Dual-function pin: logic-level shutdown or PWM dimming input; internal pull-down ensures safe default-off state. |
| 5 VOUT | Boost output | Anode of integrated Schottky diode; connects directly to LED string cathode; routed away from noise-sensitive nodes. |
| 6 VIN | Input supply | Requires local 1 μF X5R/X7R ceramic bypass capacitor close to pin; supports 2.5–16 V operation with 260°C solder tolerance. |
Key Features
| Feature | Design Value |
|---|---|
| Inherently uniform LED current | Series-string topology with single FB resistor ensures matched current across all LEDs, eliminating brightness mismatch in multi-segment backlights. |
| No external Schottky diode required | On-chip Schottky reduces component count by one, saves ~1.5 mm² board area, and eliminates diode selection, placement, and thermal derating concerns. |
| Output over-voltage protection (OVP) | Clamps VOUT at 30 V during open-circuit faults and enters low-frequency pulse mode to limit average input current and junction temperature rise. |
| 1.2 MHz fixed-frequency operation | Enables use of miniature 22 μH shielded inductors (e.g., Sumida CDRH5D28R-220NC) and avoids audible noise in sensitive audio/display environments. |
| Soft-start function | Internal 300 μs soft-start prevents inrush current spikes during power-up, protecting input capacitors and upstream regulators in battery-fed systems. |
Applications
| Cellular Phone Backlight | Digital Camera LCD |
|---|---|
|
Use Scenario: Driving 6–8 white LEDs in a narrow bezel smartphone display with 3.6 V Li-ion battery supply. IC Role / Device Role / Timing Role: Boost controller providing regulated constant current to LED string; operates in discontinuous conduction mode (DCM) at light loads. Use Value: Integrated Schottky and 1.2 MHz switching allow <2.5 mm² total solution size; OVP protects display driver ICs during flex-cable disconnection events. |
Use Scenario: Powering high-brightness 3.5-inch TFT-LCD in DSLR or mirrorless camera with burst-mode flash synchronization. IC Role / Device Role / Timing Role: High-efficiency LED driver supporting PWM dimming up to 2 kHz for flicker-free video recording illumination control. Use Value: 200 mV FB reference enables ±5% LED current accuracy across -40°C to +85°C; CTRL pin tolerates 1.8 V logic for direct MCU interface. |
| GPS Receiver Display | PDA Handheld Module |
|
Use Scenario: Illuminating outdoor-readable monochrome or color LCD in automotive-grade GPS units with wide-input 5–16 V supply. IC Role / Device Role / Timing Role: Input-voltage-robust boost converter maintaining stable LED current despite engine cranking dips and alternator surges. Use Value: 2.5 V minimum start-up voltage ensures backlight operation during cold cranking; 16 V max input rating eliminates need for pre-regulator. |
Use Scenario: Backlighting QVGA or VGA resistive touchscreens in legacy industrial PDAs with aging Li-ion batteries (2.8–4.2 V range). IC Role / Device Role / Timing Role: Low-quiescent-current (2.5 mA active) LED driver extending runtime between charges while supporting software-controlled brightness scaling. Use Value: Shutdown current of 4 μA preserves battery charge during sleep mode; TSOT-23-6 package fits tight 0.5 mm pitch routing constraints. |
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 |
|---|---|---|---|
| AP3018AKTTR-G1 | Same architecture but 600 kHz switching frequency; larger inductor (47 μH) and capacitor (1 μF) required; no integrated Schottky diode. | Larger solution size and lower efficiency (max 79%) make it less suitable for ultra-thin mobile devices. | Select only if lower EMI sensitivity or legacy design reuse outweighs size/efficiency penalties. |
| AL8862SP-13 | 40 V OVP threshold, 2.5 A switch current limit, external diode required; supports up to 10 LEDs but lacks CTRL pin dimming interface. | Higher voltage headroom suits automotive displays, but absence of integrated dimming control increases system complexity. | Prefer when >30 V OVP margin is mandatory and external PWM generation is already available in host MCU. |
Compared with AP3019AKTTR-G1, AP3018AKTTR-G1 trades higher efficiency and smaller passive components for reduced EMI, while AL8862SP-13 offers greater OVP headroom at the cost of added BOM and dimming flexibility loss.
Availability
AP3019AKTTR-G1 is available at Aetrix Electronics and suitable for cellular phone backlighting, digital camera LCD modules, GPS receiver displays, and PDA handheld computers requiring stable component supply with guaranteed long-term manufacturability.
Supply support for AP3019AKTTR-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, headquartered in Plano, Texas, with design, manufacturing, and sales operations across Asia, Europe, and North America.
The AP3019A belongs to Diodes' White LED Driver product line, engineered specifically for space-constrained, battery-powered portable displays demanding high efficiency, small solution size, and robust fault protection.
FAQ
What is the maximum number of white LEDs the AP3019AKTTR-G1 can drive?
The AP3019AKTTR-G1 is specified to drive up to eight white LEDs in series, assuming typical forward voltage of 3.45 V per LED at 20 mA. With 16 V maximum input and 30 V OVP threshold, the practical limit remains eight LEDs even under worst-case VF and temperature conditions.
Does the AP3019AKTTR-G1 require an external Schottky diode?
No - the AP3019AKTTR-G1 integrates a Schottky diode on-die, with 0.7 V forward drop at 150 mA and leakage <0.1 μA at 23 V reverse bias. This eliminates the need for an external diode, reducing bill-of-materials count and PCB area in compact backlight designs.
How does the CTRL pin support dimming functionality?
The CTRL pin supports three dimming methods: logic-level enable/disable (≥1.8 V = on, ≤0.5 V = off), direct PWM input up to 2 kHz, or analog dimming via filtered PWM or DC voltage injection into the FB node. All modes retain the 200 mV feedback reference integrity for accurate current regulation.
What thermal performance can be expected in TSOT-23-6 package?
The TSOT-23-6 package has a junction-to-case thermal resistance (θJC) of 60°C/W. With proper PCB copper pour under the exposed pad and minimal ambient airflow, the device sustains continuous 20 mA output into eight LEDs at +85°C ambient, staying well below the +150°C maximum junction temperature rating.
AP3019AKTTR-G1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SOT-23-6 Thin, TSOT-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:
- -
- 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:
- TSOT-23-6
AP3019AKTTR-G1 FAQ
1.How can I place an order for AP3019AKTTR-G1 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP3019AKTTR-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 AP3019AKTTR-G1 reliable?
The price and inventory of AP3019AKTTR-G1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP3019AKTTR-G1 is usually 5 days.
3.What payment methods are accepted for AP3019AKTTR-G1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP3019AKTTR-G1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP3019AKTTR-G1?
AP3019AKTTR-G1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP3019AKTTR-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 AP3019AKTTR-G1?
For technical support, including AP3019AKTTR-G1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP3019AKTTR-G1 requirements.
6.How does Aetrix verify that AP3019AKTTR-G1 is sourced from the original manufacturer or authorized distributors?
All AP3019AKTTR-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 AP3019AKTTR-G1 meets industry standards.
7.What is the process for return or replacement of AP3019AKTTR-G1?
All AP3019AKTTR-G1 units undergo pre-shipment inspection (PSI). If there is an issue with AP3019AKTTR-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 AP3019AKTTR-G1 part is unused and in its original packaging.
Return procedure for AP3019AKTTR-G1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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