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Diodes Incorporated AP3012KTR-E1
- Part No.:
- AP3012KTR-E1
- Manufacturer:
- Diodes Incorporated
- Package:
- SC-74A, SOT-753
- Datasheet:
-
AP3012KTR-E1.pdf
- Description:
- IC REG BOOST ADJ 500MA SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:46,232
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Product details
Overview
AP3012KTR-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 AP3012KTR-E1 datasheet, AP3012KTR-E1 pinout, AP3012KTR-E1 application, or AP3012KTR-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 AP3012 operates in constant-frequency current-mode control, using internal slope compensation for stable duty-cycle regulation up to 90%. Its feedback loop compares the resistor-divider output against a precise 1.25V reference to regulate VOUT via VOUT = 1.25 × (1 + R1/R2).
Overvoltage protection triggers shutdown when SW pin voltage exceeds 29V, and recovery requires either SHDN pin toggle or VIN power cycle. Soft-start limits inrush current by linearly ramping the internal current limit over ~550µs at startup.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Switching Frequency | 1.5MHz typical - enables use of ≤10µH inductors and reduces EMI filtering burden |
| Input Voltage Range | 2.6V to 16V - supports single-cell Li-ion (3.0–4.2V) and multi-cell alkaline/NiMH inputs |
| Feedback Reference | 1.25V ±0.08V - sets output accuracy and allows precise adjustment via external resistors |
| OVP Threshold | 29V - protects downstream circuitry by disabling switching if output exceeds safe limit |
| Shutdown Current | 1µA typical - minimizes battery drain in standby mode for portable applications |
| Integrated Switch | 36V VSW, 500mA ISW - eliminates need for external MOSFET and reduces BOM count |
| Soft-Start Time | 550µs - prevents input voltage sag and output overshoot during power-up |
Pinout & Package
AP3012KTR-E1 is housed in a RoHS-compliant, lead-free SOT-23-5 package with exposed pad thermal enhancement (θJA = 265°C/W, θJC = 69.6°C/W). Pin assignments are validated per Diodes DS44577 Rev. 2-2.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (SW) | Switch Node | Connects to inductor and flyback diode; carries pulsed 500mA current; voltage swings up to 38V max |
| 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 comparator references 1.25V to regulate VOUT |
| 4 (SHDN) | Enable Control | Logic-level input: ≥1.5V enables, ≤0.4V disables; draws ≤55µA bias current |
| 5 (VIN) | Power Input | Supplies internal circuitry and switch driver; requires local 1–10µF ceramic bypass capacitor |
Key Features
| Feature | Design Value |
|---|---|
| High-frequency operation | 1.5MHz switching enables <10µH inductors and reduces solution footprint by >40% vs. 500kHz converters |
| Built-in OVP | 29V threshold shutdown prevents damage to LEDs or display driver ICs during open-load or feedback fault |
| Adjustable output | VOUT set via two external resistors (e.g., 24V with R1/R2 = 18.2) - avoids fixed-output inventory complexity |
| Low quiescent current | 2.5mA typical operating current and 0.1µA shutdown draw extend battery life in always-on display bias rails |
| Robust bipolar switch | 36V-rated, 500mA capable on-chip transistor eliminates gate-drive design and layout sensitivity of external MOSFETs |
Applications
| LCD Display Bias Supply | White LED Backlight Driver |
|---|---|
Use Scenario: Powering positive and negative bias rails (e.g., +15V and –10V) for TFT-LCD source/gate drivers in handheld instrumentation. IC Role / Device Role / Timing Role: Primary boost regulator generating stable high-voltage bias from 3.3V system rail. Use Value: 1.5MHz operation allows 4.7µH inductor and 10µF X5R ceramic output cap - reducing board area by 35% versus 500kHz alternatives. | Use Scenario: Driving 8–12 white LEDs in series (requiring ~24V @ 30mA) for smartphone or tablet display backlights. IC Role / Device Role / Timing Role: Constant-current-capable boost controller regulating LED string voltage via FB pin feedback. Use Value: Built-in 29V OVP prevents catastrophic LED failure during open-circuit or dimming fault conditions. |
| OLED Panel Power Management | Portable Medical Display Supply |
Use Scenario: Generating programmable anode voltage (12–28V) for OLED pixel drive circuits in wearable health monitors. IC Role / Device Role / Timing Role: Adjustable boost converter with SHDN-controlled on/off sequencing synchronized to display frame rate. Use Value: 1µA shutdown current ensures <1µW standby loss - critical for multi-week battery life in clinical-grade wearables. | Use Scenario: Providing isolated, low-noise 20V bias for analog front-end amplifiers and ADC reference buffers in portable ultrasound displays. IC Role / Device Role / Timing Role: High PSRR boost stage preceding LDO post-regulation to suppress switching noise coupling into sensitive analog paths. Use Value: 81% peak efficiency at 30mA and tight 1.25V feedback reference (±6%) ensure stable, low-drift analog supply under varying battery voltage. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar boost converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS61040DRBT | 2.5MHz switching, 28V OVP, 0.5A switch, but requires external compensation network | Higher frequency enables smaller magnetics but increases layout sensitivity and EMI filtering demand | Prefer when board space is extreme constraint and design team has RF layout expertise |
| MAX17062ETA+ | 1.2MHz, 32V OVP, integrated Schottky, but 2.7–5.5V input range only | Limited to USB-powered or regulated 3.3/5V systems - not suitable for direct battery input | Prefer when input is fixed 3.3V/5V and integrated diode simplifies BOM |
Compared with TPS61040DRBT and MAX17062ETA+, AP3012KTR-E1 offers broader 2.6–16V input support, simpler compensation-free design, and lower shutdown current - making it optimal for direct Li-ion or multi-cell battery-fed display bias rails requiring robustness and minimal external components.
Availability
AP3012KTR-E1 is available at Aetrix Electronics and suitable for LCD/OLED display bias supplies, white LED backlight drivers, and portable medical display power management requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant green packaging.
Supply support for AP3012KTR-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, designed specifically for compact, battery-powered display and lighting applications where efficiency, small size, and integrated protection are critical.
FAQ
What is the minimum input voltage required for AP3012KTR-E1 to start switching?
The AP3012KTR-E1 requires a minimum input voltage of 2.6V to initiate and sustain switching operation, verified across temperature (-40°C to +85°C) and load conditions. Below this threshold, the internal bias circuitry cannot energize the oscillator or gate driver, resulting in no output regulation. This makes it compatible with partially discharged single-cell Li-ion batteries down to 2.6V.
Can AP3012KTR-E1 drive a 24V/30mA white LED string without external components beyond the inductor and diode?
Yes - with R1 = 182kΩ and R2 = 10kΩ (yielding VOUT = 1.25 × (1 + 182/10) = 24V), plus a 10µH inductor and 1N5819 Schottky diode, the AP3012KTR-E1 regulates 24V at 30mA with >78% efficiency at 3.6V input. No compensation capacitors or additional feedback components are needed due to its internally compensated current-mode architecture.
How does the overvoltage protection (OVP) behave during a feedback resistor open-circuit fault?
During an open-circuit feedback fault, the FB pin voltage drops to 0V, causing the controller to drive maximum duty cycle until the SW node voltage reaches 29V. At that point, the OVP circuit triggers immediate shutdown, clamping SW and holding the device off until SHDN is toggled low-high or VIN is cycled. This prevents uncontrolled output rise and protects connected LEDs or display ICs.
Is AP3012KTR-E1 qualified for automotive applications per AEC-Q100?
No - AP3012KTR-E1 is specified for industrial temperature range (-40°C to +85°C) and is not AEC-Q100 qualified. Diodes offers automotive-grade variants (e.g., AP3012Q) with PPAP documentation, IATF 16949 manufacturing, and extended temperature screening; contact Diodes sales for qualification status and part numbering.
AP3012KTR-E1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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
AP3012KTR-E1 FAQ
1.How can I place an order for AP3012KTR-E1 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP3012KTR-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 AP3012KTR-E1 reliable?
The price and inventory of AP3012KTR-E1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP3012KTR-E1 is usually 5 days.
3.What payment methods are accepted for AP3012KTR-E1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP3012KTR-E1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP3012KTR-E1?
AP3012KTR-E1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP3012KTR-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 AP3012KTR-E1?
For technical support, including AP3012KTR-E1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP3012KTR-E1 requirements.
6.How does Aetrix verify that AP3012KTR-E1 is sourced from the original manufacturer or authorized distributors?
All AP3012KTR-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 AP3012KTR-E1 meets industry standards.
7.What is the process for return or replacement of AP3012KTR-E1?
All AP3012KTR-E1 units undergo pre-shipment inspection (PSI). If there is an issue with AP3012KTR-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 AP3012KTR-E1 part is unused and in its original packaging.
Return procedure for AP3012KTR-E1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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