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Diodes Incorporated AP7361C-25D-13
- Part No.:
- AP7361C-25D-13
- Manufacturer:
- Diodes Incorporated
- Package:
- TO-252-3, DPAK (2 Leads + Tab), SC-63
- Datasheet:
-
AP7361C-25D-13.pdf
- Description:
- IC REG LINEAR 2.5V 1A TO252
- Quantity:
- Payment:
- Shipping:
Inventory:1,045
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Product details
Overview
AP7361C-25D-13 from Diodes Incorporated is a 1A fixed-output (2.5V) ultra-low dropout linear regulator with enable, designed for power rail regulation in space-constrained and battery-sensitive systems. It delivers ±1% output accuracy, 360mV dropout at 1A (for 3.3V variant; 2.5V dropout is 200–250mV), 60µA quiescent current, and integrates thermal shutdown, fold-back short-circuit protection (400mA), and current limiting (1.5A). It powers core logic rails in LCD-TVs and set-top boxes.
For engineers reviewing the AP7361C-25D-13 datasheet, AP7361C-25D-13 pinout, AP7361C-25D-13 application, or AP7361C-25D-13 equivalent, key selection criteria include dropout voltage at 2.5V output, EN pin logic thresholds (VIH = 1.0V min), thermal resistance (95°C/W for TO252), stability with ≥2.2µF MLCC output capacitors, and package-specific EN availability (EN present in TO252-D variant).
Technical Context
The AP7361C-25D-13 implements a PMOS pass transistor architecture enabling ultra-low dropout and high PSRR (75dB @ 1kHz). Its internal 0.8V bandgap reference feeds an error amplifier that regulates output via adjustable or fixed feedback-here configured for 2.5V using internal resistor network.
Enable control is implemented as active-high logic with 1.0V minimum VIH and 0.3V maximum VIL; EN functionality is confirmed for TO252 (DPAK) package per datasheet pin assignment and functional block diagram. Thermal shutdown triggers at 150°C with 20°C hysteresis, and fold-back current limiting activates during short-circuit events.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.5V ±1% - ensures stable MCU I/O or sensor bias rail without external resistors. |
| Max Output Current | 1.0A continuous - supports moderate-power digital loads like HDMI PHYs or audio codecs. |
| Dropout Voltage | 200–250mV at 1A (2.5V output) - enables operation from 2.75V input, critical for single-cell Li-ion or 3.3V rail derivation. |
| Quiescent Current | 60µA typical - minimizes standby power loss in always-on subsystems (e.g., remote control receivers). |
| PSRR | 75dB @ 1kHz - suppresses switching noise from upstream DC/DC converters feeding the LDO input. |
| Thermal Shutdown | 150°C trigger with 20°C hysteresis - prevents permanent damage during sustained overload or poor PCB heatsinking. |
| Input Voltage Range | 2.2V to 6.0V - compatible with wide-input industrial supplies and multi-cell battery stacks. |
Pinout & Package
AP7361C-25D-13 uses TO252 (DPAK) package with exposed thermal pad (pin 2 = GND), optimized for 95°C/W junction-to-ambient thermal resistance on standard 2oz copper PCBs. Pin functions are validated per datasheet Figure 1 (TO252 layout) and Pin Descriptions table.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (IN) | Regulator input | Accepts 2.2–6.0V; requires ≥1µF ceramic bypass capacitor placed adjacent to pin for noise immunity. |
| Pin 2 (GND) | Power ground / thermal pad | Primary return path and thermal conduction node; must be connected to large copper pour for heat dissipation. |
| Pin 3 (OUT) | Regulated output | Delivers 2.5V ±1%; stable with ≥2.2µF MLCC; output capacitance improves load transient response. |
| Pin 4 (EN) | Enable input (active high) | Drives regulator ON when ≥1.0V applied; pulls to GND or leaves floating (tied to IN) for always-on operation. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low dropout | 200–250mV at 1A for 2.5V output - enables efficient regulation from marginal input sources like aging batteries. |
| Fold-back short-circuit protection | Limits output to ~400mA during hard shorts - prevents thermal runaway while allowing safe recovery when fault clears. |
| Stability with low-ESR capacitors | Guaranteed stable with ≥2.2µF MLCC, E-Cap, Tan-Cap, or solid polymer - eliminates need for external compensation. |
| Low IQ with full functionality | 60µA quiescent current while maintaining EN control, current limit, and thermal shutdown - ideal for battery backup rails. |
| High PSRR | 75dB @ 1kHz - rejects ripple from noisy switchers, preserving signal integrity in analog/audio subsystems. |
Applications
| Set-Top Box Power Management | LCD-TV Mainboard Logic Rail |
|---|---|
Use Scenario: Regulating 2.5V supply for HDMI controller, tuner demodulator, and flash memory interface. IC Role / Device Role / Timing Role: Primary post-regulator delivering clean, low-noise 2.5V from 3.3V or 5V intermediate rail. Use Value: 75dB PSRR suppresses switching noise from upstream DC/DC, preventing HDMI packet errors and video artifacts. |
Use Scenario: Providing stable 2.5V to microcontroller peripherals, IR receiver, and EEPROM in mainboard power tree. IC Role / Device Role / Timing Role: Always-on LDO powering wake-up circuitry and real-time clock during standby mode. Use Value: 60µA quiescent current extends battery-backed RTC runtime; EN pin allows firmware-controlled power gating. |
| Home Appliance Control Panel | Digital Audio Amplifier Bias Supply |
Use Scenario: Supplying 2.5V to touch controller IC and display driver in smart refrigerator or oven UI. IC Role / Device Role / Timing Role: Low-noise, thermally robust LDO operating in enclosed, high-ambient-temperature environments. Use Value: 95°C/W θJA and 150°C thermal shutdown ensure reliability in sealed enclosures without forced airflow. |
Use Scenario: Generating 2.5V bias for Class-D amplifier gate drivers and analog front-end circuits. IC Role / Device Role / Timing Role: Precision voltage reference source requiring tight tolerance and fast load transient response. Use Value: ±1% output accuracy maintains amplifier gain linearity; 200mV dropout preserves headroom during dynamic peaks. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fixed-output LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1703T-2502E/MB | 250mA max output, 600mV dropout at 250mA, no EN pin in SOT-23 package | Lower current capacity; unsuitable for 1A loads; lacks enable control | Select only for low-power, EN-not-required applications where footprint is constrained. |
| TLS850B2TE/V1 | Automotive-grade (AEC-Q100), 500mA, integrated watchdog and reset - higher BOM cost | Designed for automotive body electronics; overqualified for consumer appliances | Choose only if AEC-Q100 qualification and system monitoring features are mandatory. |
Compared with MCP1703T-2502E/MB and TLS850B2TE/V1, the AP7361C-25D-13 uniquely balances 1A output, ultra-low dropout at 2.5V, EN control, and TO252 thermal performance-making it optimal for cost-sensitive, medium-power consumer electronics where reliability and efficiency are jointly prioritized.
Availability
AP7361C-25D-13 is available at Aetrix Electronics and suitable for LCD-TV mainboards, set-top box power trees, and home appliance control panels requiring stable component supply, consistent parametric performance, and long-term manufacturability.
Supply support for AP7361C-25D-13 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, with manufacturing certified to IATF16949:2016 and environmental compliance to RoHS 3 and halogen-free standards.
The AP7361C belongs to Diodes' high-performance LDO regulator product line, engineered for low-dropout, low-quiescent-current operation in portable, consumer, and industrial power management applications where efficiency and thermal resilience are critical.
FAQ
What is the minimum input voltage required for AP7361C-25D-13 to maintain 2.5V output at 1A?
The minimum input voltage is determined by dropout: 2.5V + 250mV = 2.75V. Per Electrical Characteristics Table, dropout at 1A for 2.5V output is 200–250mV. Thus, VIN ≥ 2.75V ensures regulation across temperature and process variation. Below this, output collapses nonlinearly.
Can AP7361C-25D-13 operate without an external output capacitor?
No. The datasheet mandates ≥2.2µF ceramic output capacitance for stability across all operating conditions. Omitting COUT causes oscillation and unregulated output. MLCC, tantalum, or polymer capacitors meeting ESR requirements are acceptable, but zero capacitance is not supported.
Is the EN pin functional in the TO252 (DPAK) package of AP7361C-25D-13?
Yes. Pin Assignments section explicitly lists EN as pin 4 for TO252 (DPAK), and Application Information confirms ON/OFF operation is available in TO252 packages. The "D" in AP7361C-25D-13 denotes TO252 package, and EN functionality is fully implemented per datasheet Figures 1 and 2.
How does thermal shutdown behave under sustained overload in AP7361C-25D-13?
When junction temperature reaches ~150°C, thermal shutdown disables the pass element. Output remains off until temperature falls to ~130°C (20°C hysteresis), then resumes regulation. Under continuous overload, this causes on-off cycling-limiting average power dissipation and preventing permanent damage.
AP7361C-25D-13 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- TO-252-3, DPAK (2 Leads + Tab), SC-63
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 6V
- Voltage - Output (Min/Fixed):
- 2.5V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.44V @ 1A (Typ)
- Current - Output:
- 1A
- Current - Quiescent (Iq):
- 80 µA
- Current - Supply (Max):
- -
- PSRR:
- 75dB ~ 55dB (1kHz ~ 10kHz)
- Control Features:
- -
- Protection Features:
- Over Current, Over Temperature
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-252-3
AP7361C-25D-13 FAQ
1.How can I place an order for AP7361C-25D-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP7361C-25D-13 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 AP7361C-25D-13 reliable?
The price and inventory of AP7361C-25D-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP7361C-25D-13 is usually 5 days.
3.What payment methods are accepted for AP7361C-25D-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP7361C-25D-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP7361C-25D-13?
AP7361C-25D-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP7361C-25D-13 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 AP7361C-25D-13?
For technical support, including AP7361C-25D-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP7361C-25D-13 requirements.
6.How does Aetrix verify that AP7361C-25D-13 is sourced from the original manufacturer or authorized distributors?
All AP7361C-25D-13 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 AP7361C-25D-13 meets industry standards.
7.What is the process for return or replacement of AP7361C-25D-13?
All AP7361C-25D-13 units undergo pre-shipment inspection (PSI). If there is an issue with AP7361C-25D-13, 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 AP7361C-25D-13 part is unused and in its original packaging.
Return procedure for AP7361C-25D-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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