My Inquiry
My Account
Diodes Incorporated AP3019AUKTR-G1
- Part No.:
- AP3019AUKTR-G1
- Manufacturer:
- Diodes Incorporated
- Category:
- LED Drivers
- Package:
- SOT-23-6
- Datasheet:
-
AP3019AUKTR-G1.pdf
- Description:
- IC LED DRVR RGLTR PWM SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:4,950
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
AP3019AUKTR-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 up to 84% efficiency, and regulates LED current via a single 200mV feedback reference. Used in cellular phones and LCD modules with 2.5–16V input and 30V OVP clamping.
For engineers reviewing the AP3019AUKTR-G1 datasheet, AP3019AUKTR-G1 pinout, AP3019AUKTR-G1 application, or AP3019AUKTR-G1 equivalent, this page provides verified technical context, package mapping, real-world dimming control methods (PWM/DC/filtered PWM), and validated alternative options for WLED boost driver selection.
Technical Context
The AP3019AUKTR-G1 employs constant-frequency current-mode PWM control with internal ramp compensation and a 200mV precision error amplifier reference. Its functional block includes an integrated 360mV VCE(sat) NPN switch, 30V output over-voltage protection comparator, and soft-start circuit limiting inrush current.
It supports three dimming modes: CTRL-pin PWM (≤2kHz), DC voltage injection into FB, and filtered PWM on FB - all preserving current regulation accuracy independent of LED forward voltage variation. The IC maintains stable operation across –40°C to +85°C with thermal resistance θJA = 265°C/W (SOT-23-6).
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 capacitor. |
| Feedback Reference Voltage | 200 mV ±6% - sets LED current via external resistor (e.g., 10Ω → 20mA), immune to VF drift across LEDs. |
| OVP Threshold | 30 V - clamps output during LED open-circuit failure, reducing stress on external components and enabling safe fault handling. |
| Integrated Schottky | 0.7 V forward drop @ 150mA - eliminates external diode, saving board space and reducing BOM count in compact handheld designs. |
| CTRL Pin Logic Levels | Enable ≥1.8 V, Disable ≤0.5 V - allows direct interface with 1.8V/3.3V logic without level-shifting; supports PWM dimming up to 2kHz. |
| Efficiency | Up to 84% @ 3.6VIN, 8×WLED (3.45V each), 20mA - minimizes power loss and thermal load in battery-powered devices. |
| Quiescent Current | 2.5 mA typical @ no load - ensures low standby power draw when enabled; drops to 4 µA in shutdown mode. |
Pinout & Package
AP3019AUKTR-G1 is packaged in RoHS-compliant, green TSOT-23-6 (thin small-outline transistor) - a 2.8 × 2.9 × 0.95 mm, 6-pin surface-mount package with exposed pad for thermal enhancement. Pin 1 marked by dot; pin numbering follows standard top-view layout.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 SW | Switch node | Connects to inductor; carries pulsed current up to 550mA peak; requires low-inductance routing to minimize EMI. |
| 2 GND | Power ground | Main return path for switch current and IC bias; must be tied directly to power plane under exposed pad. |
| 3 FB | Feedback input | Senses output current via resistor divider; 200mV reference enables precise current setting independent of LED VF. |
| 4 CTRL | Control/dimming input | Dual-function: logic-level enable/disable and analog/PWM dimming input; high-impedance (≤100nA bias). |
| 5 VOUT | Boost output | Anode of internal Schottky diode; connects to LED string cathode; clamped at 30V during open-circuit faults. |
| 6 VIN | Input supply | 2.5–16V DC input; requires local 1µF X5R/X7R bypass capacitor placed within 2mm of pin for stability. |
Key Features
| Feature | Design Value |
|---|---|
| Inherently uniform LED current | Series-string topology with single-current-sense point ensures identical current through all 8 LEDs, eliminating brightness mismatch. |
| No external Schottky diode required | Integrated diode reduces component count, PCB area, and assembly cost - critical for space-constrained mobile designs. |
| Output over-voltage protection (OVP) | 30V clamping threshold prevents damage to LEDs and capacitors during open-circuit or cold-junction failure. |
| 1.2MHz fixed-frequency operation | Enables use of miniature 22µH inductors (e.g., Sumida CDRH5D28R-220NC) and 0.22µF X5R output caps - cuts solution size >40% vs. 500kHz designs. |
| Soft-start circuit | 300µs internal startup ramp limits inrush current into output capacitor, preventing input rail sag and system reset. |
Applications
| Cellular Phone Backlight | Digital Camera Display |
|---|---|
|
Use Scenario: Driving 6–8 white LEDs in a narrow bezel smartphone display with 3.6V Li-ion battery input. IC Role / Device Role / Timing Role: Boost controller providing constant-current drive with PWM dimming synchronized to display frame rate. Use Value: 84% efficiency extends battery life; 1.2MHz switching avoids audible noise; integrated diode saves 0.8mm² PCB area. |
Use Scenario: Powering high-brightness WLED backlight for 2.7-inch QVGA LCD in compact digital camera with intermittent usage. IC Role / Device Role / Timing Role: High-efficiency boost converter enabling instant-on backlight with <300µs soft-start and zero-flicker dimming. Use Value: 4µA shutdown current preserves battery during standby; OVP protects against LED string disconnection during lens actuation. |
| LCD Module Backlight | GPS Receiver Display |
|
Use Scenario: Integrated backlight solution for industrial-grade 4.3-inch WVGA LCD module operating from 5V USB or 12V adapter input. IC Role / Device Role / Timing Role: Fixed-frequency current-mode regulator delivering stable 20mA per LED across temperature (–40°C to +85°C). Use Value: 200mV FB reference tolerance (±6%) ensures ±3% LED current accuracy; TSOT-23-6 package supports automated reflow assembly. |
Use Scenario: Low-power backlight for outdoor-readable 2.2-inch monochrome LCD in automotive-grade GPS receiver with wide-input 6–16V supply. IC Role / Device Role / Timing Role: Input-voltage-tolerant boost driver supporting dimming via microcontroller GPIO with 1.8V logic compatibility. Use Value: CTRL pin accepts 1.8V high signal - eliminates level shifter; 265°C/W θJA enables operation without heatsink in sealed enclosure. |
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 pinout, but 600kHz switching frequency and no integrated Schottky diode. | Requires external diode and larger 47µH inductor; lower efficiency (~78%) and higher solution height. | Select only if lower EMI priority outweighs size/efficiency trade-offs. |
| AL8862SP-13 | 40V OVP, 2.5A switch current limit, supports up to 10 LEDs; requires external diode and 500kHz–2.5MHz programmable frequency. | Better suited for high-brightness automotive displays; lacks integrated diode and fixed 1.2MHz simplicity. | Choose when higher LED count or adjustable frequency is required; not drop-in compatible. |
Compared with AP3019AUKTR-G1, AP3018AKTR-G1 sacrifices integration and efficiency for lower EMI, while AL8862SP-13 offers higher voltage/current headroom at the cost of added external components and design complexity.
Availability
AP3019AUKTR-G1 is available at Aetrix Electronics and suitable for cellular phone backlighting, digital camera displays, and industrial LCD modules requiring stable component supply, RoHS/Green compliance, and tape-and-reel delivery for SMT production.
Supply support for AP3019AUKTR-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 and manufacturing operations across Asia and the Americas.
The AP3019A belongs to Diodes' White LED Driver product line, engineered specifically for compact, high-efficiency backlight solutions in battery-powered portable electronics where size, thermal performance, and current matching are critical.
FAQ
What is the maximum number of white LEDs the AP3019AUKTR-G1 can drive?
The AP3019AUKTR-G1 is specified to drive up to eight white LEDs in series, assuming typical forward voltage of 3.45V per LED at 20mA, resulting in ~27.6V total forward drop. With its 30V OVP threshold and 16V maximum input, it supports this configuration across full temperature range (–40°C to +85°C) and input voltage variations.
Does the AP3019AUKTR-G1 require an external Schottky diode?
No - the AP3019AUKTR-G1 integrates a Schottky diode with 0.7V forward drop at 150mA and <4µA reverse leakage at 23V. This eliminates the need for an external diode, reducing bill-of-materials count, PCB footprint, and potential assembly errors in high-volume portable device manufacturing.
How does dimming work on the AP3019AUKTR-G1?
The AP3019AUKTR-G1 supports three dimming methods: (1) PWM applied directly to the CTRL pin (up to 2kHz), (2) DC voltage injection into the FB pin via resistor divider, and (3) filtered PWM on FB. All preserve current regulation accuracy because LED current remains referenced to the internal 200mV bandgap, independent of VF shifts.
What package type is used for the AP3019AUKTR-G1?
The AP3019AUKTR-G1 uses the TSOT-23-6 package: a thin, 2.8 × 2.9 × 0.95 mm surface-mount outline with gull-wing leads and an exposed thermal pad. It is RoHS-compliant and green (lead-free, halogen-free), qualified for reflow soldering per J-STD-020, and marked "L8E" on the top surface.
AP3019AUKTR-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:
- -
- 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
AP3019AUKTR-G1 FAQ
1.How can I place an order for AP3019AUKTR-G1 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP3019AUKTR-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 AP3019AUKTR-G1 reliable?
The price and inventory of AP3019AUKTR-G1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP3019AUKTR-G1 is usually 5 days.
3.What payment methods are accepted for AP3019AUKTR-G1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP3019AUKTR-G1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP3019AUKTR-G1?
AP3019AUKTR-G1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP3019AUKTR-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 AP3019AUKTR-G1?
For technical support, including AP3019AUKTR-G1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP3019AUKTR-G1 requirements.
6.How does Aetrix verify that AP3019AUKTR-G1 is sourced from the original manufacturer or authorized distributors?
All AP3019AUKTR-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 AP3019AUKTR-G1 meets industry standards.
7.What is the process for return or replacement of AP3019AUKTR-G1?
All AP3019AUKTR-G1 units undergo pre-shipment inspection (PSI). If there is an issue with AP3019AUKTR-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 AP3019AUKTR-G1 part is unused and in its original packaging.
Return procedure for AP3019AUKTR-G1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AP3019AUKTR-G1 Tags
-
BCR402RE6327HTSA1
Infineon Technologies
-
BCR430UXTSA2
Infineon Technologies
-
BCR420UE6433HTMA1
Infineon Technologies
-
BCR420UE6327HTSA1
Infineon Technologies
-
BCR421UE6327HTSA1
Infineon Technologies
-
LYT1604D-TL
Power Integrations
-
HV9910CLG-G
Microchip Technology
-
CL2N8-G
Microchip Technology
-
BCR420UW6-7
Diodes Incorporated
-
BCR421UW6-7
Diodes Incorporated
-
BCR420UFD-7
Diodes Incorporated
-
BCR421UFD-7
Diodes Incorporated
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
