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Diodes Incorporated AP7361C-33Y5-13
- Part No.:
- AP7361C-33Y5-13
- Manufacturer:
- Diodes Incorporated
- Package:
- SOT-89-5/6
- Datasheet:
-
AP7361C-33Y5-13.pdf
- Description:
- IC REG LINEAR 3.3V 1A SOT89-5
- Quantity:
- Payment:
- Shipping:
Inventory:34,118
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Product details
Overview
AP7361C-33Y5-13 from Diodes Incorporated is a 1A fixed-output (3.3V), ultra-low dropout linear regulator in SOT89-5 package with enable control, ±1% output accuracy, 360mV dropout at 1A, and 60µA quiescent current-designed for stable power delivery in battery-powered audio/video systems and portable electronics.
For engineers reviewing the AP7361C-33Y5-13 datasheet, AP7361C-33Y5-13 pinout, AP7361C-33Y5-13 application, or AP7361C-33Y5-13 equivalent, key selection criteria include dropout voltage at full load, EN logic thresholds, thermal shutdown threshold (150°C), PSRR (75dB @ 1kHz), and compatibility with 2.2µF MLCC output capacitors.
Technical Context
The AP7361C-33Y5-13 integrates a PMOS pass element, band-gap reference, error amplifier, and fold-back current limiting. Its fixed 3.3V output eliminates external resistor divider requirements while maintaining 0.8V internal reference for stability.
Enable functionality is implemented via active-high EN pin with 1.0V VIH and 0.3V VIL thresholds; thermal shutdown activates at 150°C with 20°C hysteresis, and short-circuit protection limits output to 400mA during fault conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.3V ±1% - ensures precise rail generation for 3.3V logic and interface circuits without external feedback components. |
| Dropout Voltage | 360mV typical at 1A - enables operation with VIN as low as 3.66V, critical for single-cell Li-ion or multi-cell alkaline systems. |
| Quiescent Current | 60µA typical - minimizes standby power loss in always-on subsystems such as real-time clocks or sensor wake-up circuitry. |
| PSRR | 75dB @ 1kHz - suppresses switching noise from upstream DC/DC converters, preserving signal integrity in audio and ADC reference paths. |
| Current Limit | 1.5A - provides robust overcurrent protection while supporting transient loads up to 1A continuous without derating. |
| Thermal Shutdown | 150°C activation with 20°C hysteresis - prevents permanent damage during sustained overload or poor PCB thermal design. |
| Input Voltage Range | 2.2V to 6.0V - accommodates wide input sources including USB, boost regulators, and partially discharged batteries. |
| Output Capacitor | Stable with ≥2.2µF MLCC - reduces BOM count and board space versus electrolytic solutions; no minimum ESR requirement. |
Pinout & Package
SOT89-5 package: thermally enhanced 5-pin surface-mount outline with exposed pad (pin 4 = GND), optimized for ≤800mW power dissipation at +85°C ambient.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN) | Regulator input | Accepts 2.2–6.0V; requires ≥1µF ceramic bypass capacitor placed adjacent to pin for noise suppression and stability. |
| 2 (GND) | Power ground | Common return path for IN, OUT, and EN; must be connected to low-impedance ground plane to maintain PSRR and thermal performance. |
| 3 (OUT) | Regulated output | Delivers 3.3V ±1% at up to 1A; requires ≥2.2µF ceramic capacitor directly between OUT and GND for transient response and stability. |
| 4 (GND) | Thermal pad / ground | Exposed pad tied to PCB ground plane via thermal vias; essential for achieving θJA = 150°C/W and preventing thermal shutdown. |
| 5 (EN) | Enable control | Active-high logic input (VIH ≥1.0V); pulling low disables output and reduces IQ to 0.05µA, enabling system-level power gating. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low dropout | 360mV at 1A output enables use in tight VIN–VOUT margin applications like 3.7V Li-ion to 3.3V rail conversion. |
| Fold-back short-circuit protection | Limits output to 400mA during hard shorts, reducing power dissipation and enabling safe auto-recovery without latch-off. |
| High PSRR | 75dB @ 1kHz rejects ripple from noisy switchers, eliminating need for additional LC filtering in sensitive analog subsystems. |
| Low-IQ operation | 60µA quiescent current extends battery runtime in always-on IoT sensors and wearable devices operating at microamp sleep currents. |
| Wide input range | 2.2–6.0V operation supports diverse sources including USB ports, buck-boost outputs, and multi-cell battery packs. |
| Green packaging | Halogen- and antimony-free, RoHS-compliant construction meets IEC 61249-2-21 and automotive environmental standards. |
Applications
| Portable Audio Devices | LCD Display Power |
|---|---|
|
Use Scenario: Powering DACs, headphone amplifiers, and digital audio processors in Bluetooth speakers and portable media players. IC Role / Device Role / Timing Role: Primary 3.3V LDO supplying clean, low-noise bias to analog signal chain components. Use Value: 75dB PSRR and 60µA IQ preserve dynamic range and extend playback time between charges. |
Use Scenario: Generating stable 3.3V supply for LCD controller ICs, timing generators, and backlight driver logic in monitors and TVs. IC Role / Device Role / Timing Role: Fixed-output voltage regulator delivering regulated rail to display subsystems requiring tight voltage tolerance. Use Value: ±1% output accuracy ensures consistent gamma correction and image fidelity across temperature and load variations. |
| Home Appliance Control Boards | Set-Top Box SoC Power |
|
Use Scenario: Providing 3.3V power to microcontrollers, touch controllers, and communication interfaces in smart refrigerators and washing machines. IC Role / Device Role / Timing Role: System-level LDO managing power sequencing and enabling/disabling peripheral rails via EN pin. Use Value: Active-high EN allows synchronized power-up with main processor and supports low-power standby modes compliant with Energy Star requirements. |
Use Scenario: Supplying 3.3V core logic voltage to SoCs and HDMI PHYs in digital cable/satellite receivers. IC Role / Device Role / Timing Role: Secondary LDO decoupling SoC I/O domains from noisy switching supplies in compact set-top box enclosures. Use Value: 360mV dropout permits operation from 5V buck converter outputs even under high-temperature derating conditions. |
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 |
|---|---|---|---|
| MCP1700-3302E/TO | 300mA output, 175mV dropout at 250mA, 2.0µA IQ - lower current, lower IQ, higher dropout relative to 1A load. | Not suitable for >300mA loads; better for ultra-low-power MCU peripherals than audio or display subsystems. | Select when system load never exceeds 300mA and sub-µA shutdown current is required. |
| TLS850F3TAV50 | 500mA output, 200mV dropout at 500mA, integrated watchdog and reset - automotive-grade AEC-Q100 qualified. | Designed for automotive body electronics; includes safety features unnecessary in consumer appliances or STBs. | Select only for automotive applications requiring functional safety compliance and extended temperature support. |
Compared with MCP1700-3302E/TO and TLS850F3TAV50, the AP7361C-33Y5-13 uniquely balances 1A output capability, 360mV dropout at full load, and 60µA IQ-making it optimal for cost-sensitive, thermally constrained consumer electronics where both current capacity and efficiency matter.
Availability
AP7361C-33Y5-13 is available at Aetrix Electronics and suitable for portable audio devices, LCD display power systems, and home appliance control boards requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.
Supply support for AP7361C-33Y5-13 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 devices, 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 battery-powered and noise-sensitive applications across consumer, industrial, and computing markets.
FAQ
What is the maximum allowable input voltage for AP7361C-33Y5-13?
The absolute maximum input voltage is 6.5V, but recommended operating range is 2.2V to 6.0V. Exceeding 6.0V risks permanent damage per Absolute Maximum Ratings. For reliable 3.3V output, VIN must remain ≥3.66V (3.3V + 360mV dropout) under 1A load to avoid regulation loss.
Can AP7361C-33Y5-13 operate without an output capacitor?
No. A minimum 2.2µF ceramic capacitor is required between OUT and GND for stability and transient response. Omitting it causes oscillation or output overshoot during load steps. The device is not internally compensated for zero-capacitance operation, and MLCC, tantalum, or solid polymer types ≥2.2µF are all supported.
How does the EN pin behave when left unconnected?
An unconnected EN pin is undefined and may float near logic threshold, causing erratic on/off behavior. Per datasheet guidance, unused EN must be tied to IN (not VDD or GND) to ensure reliable enablement. Internal pull-down resistance is not specified; external biasing is mandatory for deterministic operation.
Is thermal pad connection required for SOT89-5 package reliability?
Yes. Pin 4 is an exposed thermal pad that must be soldered to a PCB ground plane with ≥4 thermal vias. Without this, θJA degrades from rated 150°C/W to >200°C/W, increasing junction temperature by ~25°C at 1A load and triggering premature thermal shutdown in enclosed environments.
AP7361C-33Y5-13 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SOT-89-5/6
- 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):
- 3.3V
- 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:
- Enable
- Protection Features:
- Over Current, Over Temperature
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-89-5
AP7361C-33Y5-13 FAQ
1.How can I place an order for AP7361C-33Y5-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP7361C-33Y5-13 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-33Y5-13 reliable?
The price and inventory of AP7361C-33Y5-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP7361C-33Y5-13 is usually 5 days.
3.What payment methods are accepted for AP7361C-33Y5-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP7361C-33Y5-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP7361C-33Y5-13?
AP7361C-33Y5-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP7361C-33Y5-13 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-33Y5-13?
For technical support, including AP7361C-33Y5-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP7361C-33Y5-13 requirements.
6.How does Aetrix verify that AP7361C-33Y5-13 is sourced from the original manufacturer or authorized distributors?
All AP7361C-33Y5-13 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-33Y5-13 meets industry standards.
7.What is the process for return or replacement of AP7361C-33Y5-13?
All AP7361C-33Y5-13 units undergo pre-shipment inspection (PSI). If there is an issue with AP7361C-33Y5-13, 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-33Y5-13 part is unused and in its original packaging.
Return procedure for AP7361C-33Y5-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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