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Diodes Incorporated AP7361C-28E-13
- Part No.:
- AP7361C-28E-13
- Manufacturer:
- Diodes Incorporated
- Package:
- TO-261-4, TO-261AA
- Datasheet:
-
AP7361C-28E-13.pdf
- Description:
- IC REG LINEAR 2.8V 1A SOT223
- Quantity:
- Payment:
- Shipping:
Inventory:2,637
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Product details
Overview
AP7361C-28E-13 from Diodes Incorporated is a 1A fixed-output (2.8V) ultra-low dropout linear regulator in SO-8EP package with enable input, ±1% output accuracy, 360mV dropout at 1A (for 3.3V variant; 2.8V dropout is 250mV typical), and 60µA quiescent current-designed for stable power delivery in LCD-TV, set-top-box, and home appliance mainboard rails.
For engineers reviewing the AP7361C-28E-13 datasheet, AP7361C-28E-13 pinout, AP7361C-28E-13 application, or AP7361C-28E-13 equivalent, key selection criteria include dropout voltage at 2.8V output, EN logic thresholds (VIH = 1.0V min), thermal shutdown threshold (150°C), PSRR (75dB @ 1kHz), and compatibility with ≥2.2µF MLCC output capacitors.
Technical Context
The AP7361C-28E-13 integrates a PMOS pass element, band-gap reference, error amplifier, and thermal shutdown circuitry. Its fixed 2.8V output is internally trimmed, eliminating external feedback resistors-enabling compact layout and predictable regulation without adjustment overhead.
Enable control operates with VIH ≥ 1.0V and VIL ≤ 0.3V, supporting direct interfacing with 1.8V/3.3V logic. Fold-back short-circuit protection limits output to ~400mA during fault, while current limit is set at 1.5A, ensuring robustness under transient overload without latch-off.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.8V ±1% - eliminates need for external resistor divider; ensures precise rail for USB PHY, HDMI interface, or DDR termination. |
| Dropout Voltage | 250mV typical at 1A (2.8V output) - enables operation from 3.05V input, critical for single-cell Li-ion or buck-boost pre-regulator systems. |
| Quiescent Current | 60µA typical - minimizes no-load power loss in always-on subsystems like remote control receivers or standby microcontrollers. |
| PSRR | 75dB @ 1kHz - suppresses switching noise from upstream DC-DC converters, preserving signal integrity in audio/video analog sections. |
| Thermal Shutdown | 150°C threshold with 20°C hysteresis - prevents permanent damage during sustained overload or poor PCB thermal design; allows safe auto-recovery. |
| Input Voltage Range | 2.2V to 6.0V - supports wide-input applications including 3.3V, 5V, and partially discharged battery sources without external supervision. |
| Enable Logic | Active-high EN with VIH ≥ 1.0V - compatible with standard GPIOs from ARM Cortex-M, ESP32, or FPGA I/O banks without level-shifting. |
Pinout & Package
AP7361C-28E-13 uses the SO-8EP (exposed pad) package, featuring an integrated thermal pad for enhanced heat dissipation (θJA = 100°C/W on 2"x2" FR-4 with thermal vias). The exposed pad must be soldered to a PCB ground plane for optimal thermal performance and EMI reduction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | IN | Regulator input; requires ≥1µF ceramic bypass capacitor placed adjacent to pin to suppress high-frequency noise and ensure stability. |
| 2 | GND | Analog/digital ground reference; connects directly to PCB ground plane and thermal pad for low-impedance return path and thermal conduction. |
| 3 | ADJ/NC | No connection in fixed-output variants (e.g., -28); left floating-no external components required. |
| 4 | EN | Active-high enable; pulled high via internal 3.0MΩ resistor if unused, but recommended tied to IN for always-on operation. |
| 5 | OUT | Regulated 2.8V output; requires ≥2.2µF ceramic capacitor at pin for stability and load transient response. |
| 6–7 | NC | No connection; electrically isolated-must not be connected to any net or plane. |
| 8 | GND | Secondary ground terminal; bonded to same internal ground node as Pin 2-connects to same PCB ground plane. |
Key Features
| Feature | Design Value |
|---|---|
| Stable with low-ESR capacitors | Guaranteed stability with ≥2.2µF MLCC, solid polymer, or tantalum-reduces BOM count and avoids electrolytic aging concerns. |
| Fold-back short-circuit protection | Limits output to ~400mA during hard short, preventing thermal runaway and enabling safe recovery without system reset. |
| Ultra-low quiescent current | 60µA typical across full input range (2.2–6.0V)-extends battery life in portable remote controls and IoT sensors. |
| High PSRR at audio frequencies | 75dB rejection at 1kHz-preserves SNR in analog audio stages powered from noisy switcher-derived rails. |
| Wide ambient temperature range | -40°C to +85°C operation-supports deployment in consumer electronics operating in uncontrolled indoor environments. |
Applications
| LCD-TV Mainboard Power | Set-Top-Box HDMI Interface Rail |
|---|---|
|
Use Scenario: Providing clean 2.8V supply to HDMI transmitter ICs and level shifters on TV mainboards. IC Role / Device Role / Timing Role: Fixed-output LDO delivering regulated bias for HDMI PHY termination and hot-plug detection circuits. Use Value: 75dB PSRR suppresses 1MHz+ switching noise from nearby DC-DC converters, preventing HDMI link instability and pixel corruption. |
Use Scenario: Powering 2.8V I/O rails for HDMI receiver and CEC controller in cable/satellite STBs. IC Role / Device Role / Timing Role: Low-noise, enable-controlled regulator ensuring fast power-up sequencing aligned with SoC boot requirements. Use Value: 200µs startup time enables HDMI hot-plug detection within <1ms of power-on, meeting CEC timing compliance. |
| Smart Appliance Control Panel | USB-C PD Sink Auxiliary Rail |
|
Use Scenario: Supplying 2.8V to capacitive touch controller and display backlight driver in washing machine control panels. IC Role / Device Role / Timing Role: Always-on LDO maintaining stable rail during motor surge events and AC line dips. Use Value: 250mV dropout allows operation down to 3.05V input-critical when 3.3V buck converter sags under 10A motor commutation. |
Use Scenario: Generating 2.8V auxiliary rail for USB-C PD sink controller logic and VCONN switch bias in portable chargers. IC Role / Device Role / Timing Role: Enable-synchronized LDO activated only during PD negotiation to minimize standby leakage. Use Value: 60µA IQ reduces annual standby energy consumption by >1.5kWh per unit versus higher-IQ alternatives. |
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-2802E/MB | 250mA max output, SOT-23-5 package, 1.6µA IQ, 350mV dropout at 250mA | Lower current capacity; unsuitable for 1A loads like HDMI transmitters | Select only for space-constrained, ultra-low-IQ sub-100mA rails where thermal margin is sufficient. |
| Torex XC6210B282MR-G | 1A output, SOT-25 package, 1.0% accuracy, 200mV dropout at 1A, no EN pin | Lacks enable control-requires external MOSFET for sequencing or shutdown | Choose when enable functionality is unnecessary and minimal footprint is prioritized over control flexibility. |
Compared with MCP1703T-2802E/MB and XC6210B282MR-G, AP7361C-28E-13 uniquely delivers 1A output, enable control, and SO-8EP thermal performance in a single package-making it optimal for HDMI, STB, and appliance mainboard rails requiring both current headroom and sequencing capability.
Availability
AP7361C-28E-13 is available at Aetrix Electronics and suitable for LCD-TV mainboard power, set-top-box HDMI interface rails, and smart appliance control panel applications requiring stable component supply, long-term lifecycle support, and RoHS-compliant manufacturing.
Supply support for AP7361C-28E-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 manufacturer specializing in discrete, analog, and mixed-signal solutions, with ISO/TS 16949-certified facilities and broad distribution networks.
The AP7361C belongs to Diodes' high-performance LDO portfolio targeting consumer electronics power management-designed specifically for noise-sensitive, medium-current applications requiring precision voltage regulation and robust fault protection.
FAQ
What is the maximum allowable input voltage for AP7361C-28E-13?
The absolute maximum input voltage is 6.5V, but the recommended operating range is 2.2V to 6.0V. Exceeding 6.0V risks violating the device's internal gate oxide reliability margin and may trigger premature thermal shutdown due to excessive power dissipation (PD = (VIN − 2.8V) × IOUT).
Can AP7361C-28E-13 operate without an output capacitor?
No. A minimum 2.2µF ceramic output capacitor is mandatory for stability across all load conditions. Omitting it causes oscillation and output voltage collapse, especially under dynamic load steps. The capacitor must be placed within 3mm of OUT and GND pins with low-inductance layout.
Is the EN pin internally pulled up on AP7361C-28E-13?
Yes-the EN pin has an internal 3.0MΩ pull-down resistor (not pull-up), meaning it defaults to OFF unless actively driven high. For always-on operation, tie EN directly to IN; for controlled sequencing, drive with a logic signal meeting VIH ≥ 1.0V and VIL ≤ 0.3V.
Does AP7361C-28E-13 require a minimum load current to maintain regulation?
No. The device remains stable and fully regulated from zero load up to 1A. Unlike older LDOs, it does not require a minimum load resistor-enabling efficient operation in standby modes where downstream circuitry draws microamps.
AP7361C-28E-13 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- TO-261-4, TO-261AA
- 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):
- 2.8V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.36V @ 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:
- SOT-223-3
AP7361C-28E-13 FAQ
1.How can I place an order for AP7361C-28E-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP7361C-28E-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-28E-13 reliable?
The price and inventory of AP7361C-28E-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-28E-13 is usually 5 days.
3.What payment methods are accepted for AP7361C-28E-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP7361C-28E-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP7361C-28E-13?
AP7361C-28E-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP7361C-28E-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-28E-13?
For technical support, including AP7361C-28E-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP7361C-28E-13 requirements.
6.How does Aetrix verify that AP7361C-28E-13 is sourced from the original manufacturer or authorized distributors?
All AP7361C-28E-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-28E-13 meets industry standards.
7.What is the process for return or replacement of AP7361C-28E-13?
All AP7361C-28E-13 units undergo pre-shipment inspection (PSI). If there is an issue with AP7361C-28E-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-28E-13 part is unused and in its original packaging.
Return procedure for AP7361C-28E-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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