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Diodes Incorporated AP3012UKTR-E1
- Part No.:
- AP3012UKTR-E1
- Manufacturer:
- Diodes Incorporated
- Package:
- SC-74A, SOT-753
- Datasheet:
-
AP3012UKTR-E1.pdf
- Description:
- IC REG BOOST ADJ 500MA SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,515
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Product details
Overview
AP3012UKTR-E1 from Diodes Incorporated is a 1.5MHz current-mode PWM step-up DC-DC converter with integrated 36V/500mA bipolar switch, adjustable output up to 29V, built-in overvoltage protection (29V threshold), and soft-start. It targets LCD/OLED display bias supplies and white LED backlight drivers where compact size and high-frequency operation enable use of small inductors and ceramic capacitors.
For engineers reviewing the AP3012UKTR-E1 datasheet, AP3012UKTR-E1 pinout, AP3012UKTR-E1 application, or AP3012UKTR-E1 equivalent, key selection criteria include its 1.5MHz switching frequency, 2.6–16V input range, 1.25V feedback reference, shutdown current of 1µA typical, and SOT-23-5 package compatibility with space-constrained portable designs.
Technical Context
The AP3012UKTR-E1 implements constant-frequency current-mode control with internal compensation, enabling stable regulation across wide load and input variations. Its 1.5MHz fixed-frequency operation reduces external component size while maintaining efficiency up to 81% at 30mA output.
Feedback is referenced to a precise 1.25V internal bandgap, allowing output voltage adjustment via an external resistor divider (VOUT = 1.25 × (1 + R1/R2)). The device integrates overvoltage protection that forces shutdown when SW pin voltage exceeds 29V, and features a dedicated SHDN pin with 1.5V turn-on and 0.4V turn-off thresholds.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Switching Frequency | 1.5MHz fixed - enables use of ≤10µH low-profile inductors and avoids audible noise |
| Input Voltage Range | 2.6V to 16V - supports single-cell Li-ion (3.0–4.2V) and multi-cell alkaline/NiMH inputs |
| Output Voltage Range | Adjustable up to 29V - set by external resistive divider; OVP clamps at 29V for safety |
| Integrated Switch | 36V/500mA bipolar transistor - eliminates need for external switch; VCE(SAT) ≤ 300mV at 250mA |
| Feedback Reference | 1.25V ±0.08V - enables accurate output regulation; FB bias current ≤100nA minimizes divider error |
| Shutdown Current | 1µA typical - preserves battery life in standby mode for portable displays and LED systems |
| Soft-Start Time | 550µs - limits inrush current during power-up, reducing stress on input capacitors and source |
Pinout & Package
AP3012UKTR-E1 is housed in a RoHS-compliant, halogen-free SOT-23-5 package (3.1mm × 1.7mm × 1.3mm), optimized for thermal performance (θJA = 265°C/W) and board-level reliability in space-constrained applications.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - SW | Switch node | Connects to inductor and flyback diode; voltage swings up to 38V max; triggers OVP shutdown if >29V |
| 2 - GND | Power ground | Primary return path for switch current and IC bias; must connect directly to local ground plane |
| 3 - FB | Feedback input | Senses output via resistor divider; internal 1.25V comparator sets regulation point; bias current <100nA |
| 4 - SHDN | Enable/disable control | Logic-level input: ≥1.5V = ON, ≤0.4V = OFF; draws ≤55µA; restarts device after OVP fault |
| 5 - VIN | Input supply | 2.6–16V input; requires local ceramic bypass capacitor; powers internal circuitry and switch driver |
Key Features
| Feature | Design Value |
|---|---|
| High-frequency operation | 1.5MHz switching enables 10µH inductors and eliminates bulky electrolytic capacitors |
| Built-in overvoltage protection | 29V OVP threshold shuts down SW pin automatically, preventing damage to downstream components |
| Integrated bipolar power switch | 36V/500mA rated switch eliminates external transistor, reducing BOM count and layout complexity |
| Low-quiescent-current shutdown | 1µA shutdown current extends battery runtime in always-on display bias applications |
| Internal soft-start | 550µs ramp prevents output overshoot and limits inrush into output capacitance during startup |
Applications
| LCD/OLED Display Bias Supply | White LED Backlight Driver |
|---|---|
Use Scenario: Generating 24V bias for active-matrix OLED display panels in smartwatches and portable medical monitors. IC Role / Device Role / Timing Role: Step-up regulator providing stable, adjustable high-voltage rail from a 3.6V Li-ion cell. Use Value: 1.5MHz operation allows 2.5mm × 2.0mm inductor footprint; 81% efficiency at 30mA reduces thermal load in sealed enclosures. | Use Scenario: Driving 6-series white LEDs (≈21V forward) in smartphone front-camera flash modules. IC Role / Device Role / Timing Role: Constant-current-capable boost converter with OVP safeguarding LED string against open-circuit failure. Use Value: 29V OVP threshold matches typical LED string VF + margin; 1µA shutdown enables camera app-triggered on/off control. |
| Portable Instrument Power Rail | Industrial Sensor Interface Bias |
Use Scenario: Creating isolated 15V analog supply for op-amp signal conditioning in handheld test equipment. IC Role / Device Role / Timing Role: Compact, low-noise boost stage powering precision analog circuitry from 3.3V system rail. Use Value: SOT-23-5 footprint fits tight PCB real estate; 1.25V FB reference ensures <±1% output accuracy over temperature. | Use Scenario: Providing 12V bias for MEMS pressure sensor excitation and ADC reference in wireless IoT nodes. IC Role / Device Role / Timing Role: Efficient, low-IQ boost converter supporting intermittent wake-up operation from coin-cell batteries. Use Value: 1µA shutdown current extends 10-year battery life; 2.6V minimum input supports full discharge down to 2.7V cell voltage. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar boost converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS61040DRBR | 28V OVP, 500kHz switching, 28V/400mA FET, 1.24V FB reference | Lower frequency increases inductor size; lower OVP threshold reduces margin for 24V LED strings | Select when lower EMI priority outweighs size constraints; verify OVP margin for target VOUT |
| MT3608DF | 28V OVP, 1.2MHz switching, 28V/4A FET, no integrated soft-start, 0.6V FB reference | Higher current capability but less precision feedback; requires external soft-start circuit for inrush control | Prefer for higher-output-current needs (>100mA); add RC network if soft-start is required |
Compared with TPS61040DRBR and MT3608DF, the AP3012UKTR-E1 delivers tighter feedback accuracy (1.25V ±6%), integrated soft-start, and higher OVP headroom-making it optimal for compact, battery-sensitive display bias applications where startup reliability and voltage margin are critical.
Availability
AP3012UKTR-E1 is available at Aetrix Electronics and suitable for LCD/OLED display bias supplies, white LED backlight drivers, and portable instrument power rails requiring stable component supply, RoHS/Green compliance, and SOT-23-5 footprint consistency.
Supply support for AP3012UKTR-E1 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, specializing in high-reliability power management, signal integrity, and protection solutions for consumer, industrial, and automotive markets.
The AP3012 belongs to Diodes' high-frequency boost converter product line, engineered specifically for space-constrained portable electronics needing efficient, integrated, and OVP-protected DC-DC conversion from single-cell sources.
FAQ
What is the maximum output voltage achievable with AP3012UKTR-E1?
The AP3012UKTR-E1 supports adjustable output voltages up to 29V, determined by the external resistor divider on the FB pin using VOUT = 1.25 × (1 + R1/R2). Its internal overvoltage protection activates at exactly 29V, forcing shutdown to prevent damage-so 29V is both the practical maximum and absolute safety limit.
Can AP3012UKTR-E1 drive white LEDs directly?
No, the AP3012UKTR-E1 is a voltage-mode boost regulator-not a constant-current LED driver. It can power LED strings indirectly by supplying a stable bias voltage to a separate current-regulating circuit (e.g., linear or switching LED driver IC), as confirmed in its official typical application circuits for LCD backlights.
Does AP3012UKTR-E1 require an external Schottky diode?
Yes, the AP3012UKTR-E1 requires an external Schottky diode connected between the SW pin and output capacitor. Its internal switch is a bipolar transistor-not a synchronous MOSFET-so the diode provides the necessary flyback path during switch-off periods, as shown in all reference schematics in the DS44577 datasheet.
Is AP3012UKTR-E1 qualified for automotive applications?
No, AP3012UKTR-E1 is not AEC-Q100 qualified. The datasheet explicitly states that automotive-grade versions require special change control, PPAP capability, and IATF 16949 manufacturing-none of which apply to the standard AP3012KTR-E1 variant. It is intended for commercial and industrial portable electronics only.
AP3012UKTR-E1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Function:
- Step-Up
- Output Configuration:
- Positive
- Topology:
- Boost
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.6V
- Voltage - Input (Max):
- 16V
- Voltage - Output (Min/Fixed):
- 1.25V
- Voltage - Output (Max):
- 29V
- Current - Output:
- 500mA (Switch)
- Frequency - Switching:
- 1.5MHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
AP3012UKTR-E1 FAQ
1.How can I place an order for AP3012UKTR-E1 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP3012UKTR-E1 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 AP3012UKTR-E1 reliable?
The price and inventory of AP3012UKTR-E1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP3012UKTR-E1 is usually 5 days.
3.What payment methods are accepted for AP3012UKTR-E1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP3012UKTR-E1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP3012UKTR-E1?
AP3012UKTR-E1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP3012UKTR-E1 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 AP3012UKTR-E1?
For technical support, including AP3012UKTR-E1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP3012UKTR-E1 requirements.
6.How does Aetrix verify that AP3012UKTR-E1 is sourced from the original manufacturer or authorized distributors?
All AP3012UKTR-E1 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 AP3012UKTR-E1 meets industry standards.
7.What is the process for return or replacement of AP3012UKTR-E1?
All AP3012UKTR-E1 units undergo pre-shipment inspection (PSI). If there is an issue with AP3012UKTR-E1, 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 AP3012UKTR-E1 part is unused and in its original packaging.
Return procedure for AP3012UKTR-E1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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