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Diodes Incorporated AP7361EA-33Y5-13
- Part No.:
- AP7361EA-33Y5-13
- Manufacturer:
- Diodes Incorporated
- Package:
- SOT-89-5/6
- Datasheet:
-
AP7361EA-33Y5-13.pdf
- Description:
- LDO CMOS HICURR SOT89-5 T&R 2.5K
- Quantity:
- Payment:
- Shipping:
Inventory:1,412
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Product details
Overview
AP7361EA-33Y5-13 from Diodes Incorporated is a 1A fixed-output (3.3V), ultra-low dropout linear regulator in SOT89-5 package with enable input, ±1% output accuracy, 360mV dropout at 1A, and 68µA typical quiescent current-designed for stable power delivery in battery-powered audio/video equipment and LCD display subsystems.
For engineers reviewing the AP7361EA-33Y5-13 datasheet, AP7361EA-33Y5-13 pinout, AP7361EA-33Y5-13 application, or AP7361EA-33Y5-13 equivalent, key selection criteria include dropout voltage at full load, EN logic thresholds, thermal resistance (θJA = 150°C/W), PSRR performance at 1kHz, and compatibility with 2.2µF MLCC output capacitors.
Technical Context
The AP7361EA-33Y5-13 integrates a PMOS pass element with internal 0.8V bandgap reference and error amplifier to regulate fixed 3.3V output. Its foldback short-circuit protection limits output current to 400mA during fault conditions while maintaining thermal shutdown at 150°C junction temperature.
Enable functionality is implemented via a high-threshold logic input (VIH ≥ 1.0V) with 3.0MΩ internal pull-down resistor; the device draws only 0.05µA in shutdown mode. Stability is guaranteed with ≥2.2µF ceramic output capacitance across –40°C to +85°C ambient range.
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 at 1A - enables operation from 3.66V input, critical for single-cell Li-ion or 4-cell alkaline systems. |
| Quiescent Current | 68µA typical - minimizes standby power loss in always-on subsystems like remote control receivers or sensor wake-up circuits. |
| PSRR | 75dB @ 1kHz - suppresses switching noise from upstream DC/DC converters feeding the LDO input. |
| Current Limit | 1.5A - provides robust overload tolerance beyond rated 1A output, supporting transient peak loads in display backlight drivers. |
| Thermal Shutdown | 150°C threshold with 20°C hysteresis - prevents permanent damage during sustained high-power dissipation in confined PCB layouts. |
| Input Voltage Range | 2.2V to 6.0V - supports wide-input applications including USB-powered peripherals and multi-rail industrial controllers. |
Pinout & Package
The AP7361EA-33Y5-13 uses the SOT89-5 surface-mount package with exposed thermal pad (EP), offering θJA = 150°C/W and θJC = 44.2°C/W under standard JEDEC test conditions. PCB layout requires direct connection of the EP to a large copper pour tied to GND for optimal thermal performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | IN | Regulator input; must be bypassed with ≥1µF ceramic capacitor close to pin to suppress supply ripple and prevent oscillation. |
| 2 | GND | Analog and power ground reference; connects internally to EP for thermal conduction and must be low-impedance on PCB. |
| 3 | OUT | Regulated 3.3V output; requires ≥2.2µF MLCC for stability and improved AC load response. |
| 4 | EN | Active-high enable input; pulled down internally (3.0MΩ); drives high (>1.0V) to activate regulator, low (<0.3V) to enter 0.05µA shutdown mode. |
| 5 | NC | No connection - electrically isolated; no PCB trace or solder required. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low dropout | 360mV at 1A enables 3.3V regulation from 3.66V input - essential for extending runtime in portable 3.7V Li-ion systems. |
| Foldback short-circuit protection | Limits output to 400mA during hard shorts - prevents thermal runaway while allowing safe recovery when fault clears. |
| Stable with low-ESR capacitors | Works reliably with ≥2.2µF MLCC, tantalum, or polymer capacitors - eliminates need for high-ESR electrolytics in space-constrained designs. |
| Low-noise operation | 68µA quiescent current and 75dB PSRR minimize conducted EMI into sensitive analog circuitry like ADC references or audio DACs. |
| Wide ambient temperature range | –40°C to +85°C operation - qualified for consumer electronics, set-top boxes, and industrial display enclosures without derating. |
Applications
| Smart TV Power Rails | USB-Powered Audio DAC |
|---|---|
Use Scenario: Providing clean 3.3V supply to HDMI receiver ICs and panel timing controllers in 4K smart TVs. IC Role / Device Role / Timing Role: Primary post-regulation LDO delivering stable voltage to noise-sensitive video interface circuitry. Use Value: 75dB PSRR at 1kHz rejects switching noise from upstream 12V-to-5V buck converter, preventing pixel jitter and color banding. | Use Scenario: Powering high-resolution audio DAC and headphone amplifier in portable USB-C DAC dongles. IC Role / Device Role / Timing Role: Low-noise local regulator isolating analog audio path from noisy USB VBUS supply. Use Value: 68µA quiescent current extends battery life during playback; 360mV dropout allows full 3.3V output even as Li-Po drops to 3.66V. |
| Set-Top Box SoC Core Supply | Industrial LCD Monitor Backlight Control |
Use Scenario: Delivering 3.3V to ARM-based application processor I/O rails and memory interfaces in cable/satellite STBs. IC Role / Device Role / Timing Role: Enable-controlled auxiliary LDO enabling fast power sequencing and deep-sleep mode entry. Use Value: Active-high EN pin with 1.0V VIH threshold simplifies GPIO control from 3.3V microcontroller; 0.05µA shutdown current reduces standby leakage. | Use Scenario: Supplying 3.3V bias to LED driver ICs and brightness control circuitry in 10–24-inch industrial LCD monitors. IC Role / Device Role / Timing Role: Fixed-output LDO powering analog front-end and PWM dimming logic in harsh-temperature environments. Use Value: –40°C to +85°C rating ensures reliability in unventilated kiosk enclosures; thermal shutdown protects against prolonged overcurrent in LED string faults. |
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 | 250mA output, 170mV dropout at 250mA, 1.8µA IQ - lower current, much lower quiescent current. | Suitable only for ultra-low-power microcontrollers or sensors; insufficient for 1A display subsystems. | Select when system load never exceeds 250mA and nanoamp-level sleep current is mandatory. |
| TLS850F3TAV50 | Automotive-grade (AEC-Q100), 500mA, integrated watchdog and reset - higher integration but lower output current. | Designed for automotive body electronics; includes safety features unnecessary in consumer displays. | Choose only for automotive infotainment head units requiring ASIL-B compliance and functional safety support. |
Compared with MCP1700-3302E/TO and TLS850F3TAV50, the AP7361EA-33Y5-13 uniquely balances 1A continuous output, 360mV dropout, and 68µA quiescent current in a cost-effective SOT89-5 package-making it optimal for mid-power consumer display and audio applications where automotive qualification and sub-µA IQ are not required.
Availability
AP7361EA-33Y5-13 is available at Aetrix Electronics and suitable for LCD TV power management, set-top box subsystems, and industrial display controller boards requiring stable component supply, long-term manufacturability, and RoHS-compliant packaging.
Supply support for AP7361EA-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 IATF 16949 and environmental compliance to RoHS 3 and halogen-free standards.
The AP7361EA belongs to Diodes' high-performance LDO regulator product line, engineered for low-noise, low-dropout power delivery in portable and display electronics where efficiency, thermal robustness, and small footprint are critical.
FAQ
What is the minimum input voltage required for AP7361EA-33Y5-13 to maintain regulated 3.3V output at 1A load?
The minimum input voltage is 3.66V, calculated as VOUT + VDROPOUT = 3.3V + 0.36V. At 1A load and +25°C, the typical dropout is 360mV; the datasheet specifies 500mV maximum at 1A for 3.3V output, so 3.8V ensures margin across temperature and process variation.
Can AP7361EA-33Y5-13 operate without an external output capacitor?
No. The device requires a minimum 2.2µF ceramic output capacitor for stability across –40°C to +85°C. Omitting it causes oscillation and output voltage collapse. The capacitor must be placed within 3mm of the OUT and GND pins with low-inductance layout.
Is the EN pin internally pulled up or pulled down in AP7361EA-33Y5-13?
The EN pin has an internal 3.0MΩ pull-down resistor to GND. It is not pulled up. To ensure reliable startup, tie EN directly to IN if enable control is unused; floating EN may cause erratic turn-on due to noise coupling.
Does AP7361EA-33Y5-13 support adjustable output voltage configurations?
No. The -33Y5-13 variant is factory-trimmed for fixed 3.3V output. Adjustable versions (e.g., AP7361EA-ADJFGE-7) use the ADJ pin with external resistor divider; this part lacks ADJ functionality and has NC on that pin position in SOT89-5.
AP7361EA-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):
- 0.5V @ 1A
- Current - Output:
- 1A
- Current - Quiescent (Iq):
- 91 µA
- Current - Supply (Max):
- -
- PSRR:
- -
- Control Features:
- Current Limit, Enable
- Protection Features:
- Over Current, Over Temperature, Short Circuit
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-89-5
AP7361EA-33Y5-13 FAQ
1.How can I place an order for AP7361EA-33Y5-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP7361EA-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 AP7361EA-33Y5-13 reliable?
The price and inventory of AP7361EA-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 AP7361EA-33Y5-13 is usually 5 days.
3.What payment methods are accepted for AP7361EA-33Y5-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP7361EA-33Y5-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP7361EA-33Y5-13?
AP7361EA-33Y5-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP7361EA-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 AP7361EA-33Y5-13?
For technical support, including AP7361EA-33Y5-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP7361EA-33Y5-13 requirements.
6.How does Aetrix verify that AP7361EA-33Y5-13 is sourced from the original manufacturer or authorized distributors?
All AP7361EA-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 AP7361EA-33Y5-13 meets industry standards.
7.What is the process for return or replacement of AP7361EA-33Y5-13?
All AP7361EA-33Y5-13 units undergo pre-shipment inspection (PSI). If there is an issue with AP7361EA-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 AP7361EA-33Y5-13 part is unused and in its original packaging.
Return procedure for AP7361EA-33Y5-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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