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Diodes Incorporated AP2113KTR-G1
- Part No.:
- AP2113KTR-G1
- Manufacturer:
- Diodes Incorporated
- Category:
- Special Purpose Regulators
- Package:
- SC-74A, SOT-753
- Datasheet:
-
AP2113KTR-G1.pdf
- Description:
- IC REG LDO DC FAN 1OUT SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:4,619
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Product details
Overview
AP2113KTR-G1 from Diodes Incorporated is a 600mA adjustable/fully-on linear fan driver IC with 1.6× VSET output scaling, 70μA quiescent current, and 150mV dropout at full speed mode-designed specifically for notebook computer DC fan control in battery-powered systems.
For engineers reviewing the AP2113KTR-G1 datasheet, AP2113KTR-G1 pinout, AP2113KTR-G1 application, or AP2113KTR-G1 equivalent, key selection criteria include VOUT/VSET ratio accuracy (±3%), fold-back short-circuit limit (50mA), thermal shutdown threshold (165°C), and dual-mode operation via FON pin logic level.
Technical Context
The AP2113 operates in two distinct modes: full-speed mode (FON = low) delivers fixed VOUT ≈ VIN − VDROP; adjustable mode (FON = high) regulates VOUT = 1.6 × VSET up to VIN − VDROP, requiring VSET ≥ 1.0V. It integrates fold-back current limiting and thermal shutdown with 25°C hysteresis.
It supports 1.0μF ceramic/tantalum/aluminum electrolytic output capacitors and maintains regulation across −40°C to +85°C ambient. Input voltage range is 2.5V–5.5V; absolute max VIN is 6.0V, and VSET must not exceed 5.5V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 600mA continuous - sufficient to drive standard 5V/12V DC fans without external boost |
| Quiescent Current | 70μA typical - enables >1-year battery life in always-on fan monitoring circuits |
| VOUT/VSET Ratio | 1.6 ± 3% - enables precise fan speed tuning via analog VSET reference |
| Dropout Voltage | 150mV @ 600mA (full speed mode) - minimizes power loss and heat rise at nominal load |
| Fold-back Short Limit | 50mA - limits fault current during fan stall or wiring short, reducing thermal stress |
| Thermal Shutdown | 165°C with 25°C hysteresis - prevents latch-up and enables safe auto-recovery after cooling |
| ESD Rating | HBM 6000V / MM 300V - robust enough for manual handling and board-level assembly |
Pinout & Package
AP2113KTR-G1 is packaged in SOT-23-5, a 2.9mm × 2.8mm surface-mount package with 0.95mm pitch and exposed pad for thermal dissipation. Pin 2 is GND; all pins are electrically and thermally optimized for fan-driver PCB layouts with minimal trace inductance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (SOT-23-5) | VSET | Analog reference input; sets regulated output as VOUT = 1.6 × VSET in adjustable mode |
| 2 (SOT-23-5) | GND | Power ground return path for internal LDO and protection circuitry |
| 3 (SOT-23-5) | VOUT | Regulated output driving fan motor; capable of 600mA continuous current |
| 4 (SOT-23-5) | VIN | Main supply input (2.5–5.5V); powers internal regulator and bias circuits |
| 5 (SOT-23-5) | FON | Mode-select logic input: low = full-speed mode, high = adjustable mode |
Key Features
| Feature | Design Value |
|---|---|
| Switchable dual-mode operation | FON pin toggles between fixed full-speed (low) and precision VSET-scaled (high) output control |
| Stable with 1.0μF output capacitor | Eliminates need for large bulk capacitance - reduces BOM cost and board area in space-constrained notebooks |
| Low-dropout architecture | 150mV dropout at 600mA ensures usable headroom even at 3.3V input for 3.0V fan rails |
| Integrated fold-back short protection | Clamps fault current to 50mA during VOUT short, preventing thermal runaway and PCB damage |
| Wide temperature operation | −40°C to +85°C ambient rating supports deployment on motherboard VRM zones and peripheral cards |
Applications
| Notebook Computer Fan Driver | Motherboard Thermal Management |
|---|---|
Use Scenario: Regulating 5V DC axial fans in ultrabooks where battery runtime and acoustic noise must be balanced. IC Role / Device Role / Timing Role: Linear fan driver providing analog speed control via VSET voltage, with instant full-on override via FON pin. Use Value: 70μA quiescent current extends battery life; 1.6× VSET scaling enables fine-grained speed resolution without DAC or PWM filtering. |
Use Scenario: Driving auxiliary cooling fans near CPU VRMs or chipset heatsinks on ATX motherboards. IC Role / Device Role / Timing Role: Standalone fan controller interfacing directly with thermal sensor ADC outputs or BIOS-controlled GPIOs. Use Value: Fold-back short protection prevents system shutdown during fan connector faults; SOIC-8/SOT-23-5 options support both high-density and legacy layouts. |
| Peripheral Card Cooling | Embedded Industrial Controller Fans |
Use Scenario: Active cooling for PCIe add-in cards (e.g., GPU accelerators, FPGA compute modules) in compact enclosures. IC Role / Device Role / Timing Role: Localized fan regulator responding to card-local temperature sensors, independent of main system BIOS. Use Value: 165°C thermal shutdown protects card components during airflow blockage; stable 1.0μF cap compatibility simplifies layout on small PCBs. |
Use Scenario: Fan control in DIN-rail mounted PLCs or edge gateways operating in unventilated cabinets. IC Role / Device Role / Timing Role: Low-power linear regulator delivering reliable fan voltage under wide-input (2.5–5.5V) and extended-temp (−40°C to +85°C) conditions. Use Value: HBM 6000V ESD rating ensures robustness during field servicing; green RoHS-compliant G1 marking meets industrial compliance requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar linear fan driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AP2112KTR-G1 | Successor part; identical pinout, same 600mA rating, but improved VOUT/VSET tolerance (±2% vs ±3%) and lower IQ (65μA typ) | Direct drop-in replacement; recommended for new designs due to active status and enhanced accuracy | Select AP2112KTR-G1 for production builds requiring long-term supply continuity and tighter regulation. |
| TPS7A2025PDQNR | General-purpose LDO (250mA, 1.2V fixed), no VSET scaling, no FON mode control, no fold-back protection | Limited to fixed-voltage fan rails; requires external circuitry for speed control or fault limiting | Only suitable if fan uses fixed-speed operation and system already provides overcurrent protection externally. |
Compared with AP2113KTR-G1, AP2112KTR-G1 offers higher accuracy and lower IQ while maintaining pin compatibility and function; TPS7A2025PDQNR lacks fan-specific features entirely and requires redesign to implement adjustable speed or short-circuit safety.
Availability
AP2113KTR-G1 is available at Aetrix Electronics and suitable for notebook fan drivers, motherboard thermal management, and peripheral card cooling requiring stable component supply despite its obsolete status-inventory is held for legacy design support and repair programs.
Supply support for AP2113KTR-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 semiconductor company specializing in discrete, analog, and mixed-signal solutions for power management, signal integrity, and connectivity applications.
The AP2113 belongs to Diodes' linear regulator product line designed specifically for DC fan control in portable and embedded computing platforms, emphasizing low IQ, dual-mode flexibility, and integrated protection.
FAQ
What is the minimum required VSET voltage for accurate 1.6× scaling?
The AP2113 requires VSET ≥ 1.0V to guarantee the 1.6× VOUT/VSET ratio within ±3% tolerance. Below 1.0V, regulation becomes unstable and output may collapse or deviate significantly. This threshold is specified in the Absolute Maximum Ratings table and confirmed in Figure 7 of the datasheet.
Can AP2113KTR-G1 drive a 12V fan from a 5V input?
No. The AP2113 is a linear regulator with dropout voltage ≥150mV; maximum VOUT = VIN − VDROP. With 5V input, VOUT cannot exceed ~4.85V. It is intended for 3.3V or 5V fans only. For 12V fans, a switching DC-DC solution is required.
Is the SOT-23-5 package thermally adequate for 600mA continuous operation?
Yes-when mounted with proper copper pour (≥100mm² on top layer connected to Pin 2/GND), the SOT-23-5 achieves θJA ≈ 180°C/W, limiting junction rise to ~108°C at 600mA and 25°C ambient-within the 150°C absolute max TJ. Derating is advised above 60°C ambient.
Does AP2113KTR-G1 support PWM fan control?
No. The AP2113 provides analog voltage control only-either fixed full-speed (FON = low) or VSET-scaled output (FON = high). It does not accept PWM signals, nor does it generate PWM. For PWM-compatible fans, an external MOSFET driver or dedicated PWM fan controller is required.
AP2113KTR-G1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Applications:
- LDO, DC Fan
- Voltage - Input:
- 2.5V ~ 5.5V
- Number of Outputs:
- 1
- Voltage - Output:
- 1.6V ~ 5.3V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
AP2113KTR-G1 FAQ
1.How can I place an order for AP2113KTR-G1 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP2113KTR-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 AP2113KTR-G1 reliable?
The price and inventory of AP2113KTR-G1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP2113KTR-G1 is usually 5 days.
3.What payment methods are accepted for AP2113KTR-G1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP2113KTR-G1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP2113KTR-G1?
AP2113KTR-G1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP2113KTR-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 AP2113KTR-G1?
For technical support, including AP2113KTR-G1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP2113KTR-G1 requirements.
6.How does Aetrix verify that AP2113KTR-G1 is sourced from the original manufacturer or authorized distributors?
All AP2113KTR-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 AP2113KTR-G1 meets industry standards.
7.What is the process for return or replacement of AP2113KTR-G1?
All AP2113KTR-G1 units undergo pre-shipment inspection (PSI). If there is an issue with AP2113KTR-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 AP2113KTR-G1 part is unused and in its original packaging.
Return procedure for AP2113KTR-G1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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