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Diodes Incorporated AP7361EA-12E-13
- Part No.:
- AP7361EA-12E-13
- Manufacturer:
- Diodes Incorporated
- Package:
- TO-261-4, TO-261AA
- Datasheet:
-
AP7361EA-12E-13.pdf
- Description:
- LDO CMOS HICURR SOT223 T&R 2.5K
- Quantity:
- Payment:
- Shipping:
Inventory:2,489
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Product details
Overview
AP7361EA-12E-13 from Diodes Incorporated is a 1A, fixed-output (1.2V), ultra-low dropout linear regulator in SOT223 package with enable input, ±1% output accuracy, 360mV dropout at 1A (3.3V version), and 68µA quiescent current-designed for stable power delivery in battery-powered audio/video equipment and LCD monitor logic rails.
For engineers reviewing the AP7361EA-12E-13 datasheet, AP7361EA-12E-13 pinout, AP7361EA-12E-13 application, or AP7361EA-12E-13 equivalent, key selection criteria include dropout voltage at 1A load, EN pin logic thresholds (VIH = 1.0V, VIL = 0.3V), thermal shutdown threshold (150°C), PSRR (75dB @ 1kHz), and compatibility with 2.2µF MLCC output capacitors.
Technical Context
The AP7361EA-12E-13 integrates a PMOS pass transistor, bandgap reference (0.8V), error amplifier, and foldback current limiting (400mA short-circuit clamp) with thermal shutdown hysteresis of 20°C. Its architecture enables stable regulation without minimum load and supports fast start-up (150µs typical).
It operates across 2.2V–6.0V input, delivers 1.2V ±1% output up to 1A, and maintains regulation under line/load transients due to high PSRR (75dB @ 1kHz) and low output impedance-critical for noise-sensitive analog and digital subsystems in consumer electronics.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.2V ±1% - ensures precise core voltage for 1.2V logic domains without external resistors. |
| Max Output Current | 1.0A continuous - supports mid-power SoC or FPGA I/O rail applications with margin for peak loads. |
| Dropout Voltage | 360mV typical at 1A (for 3.3V variant); for 1.2V output: 600mV typical at 1A - enables operation from 1.8V input while maintaining regulation. |
| Quiescent Current | 68µA typical - minimizes standby power loss in always-on subsystems like remote control receivers or sensor hubs. |
| 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 thermal design. |
| Enable Threshold | VIH = 1.0V min, VIL = 0.3V max - compatible with 1.8V/3.3V GPIO without level-shifting. |
Pinout & Package
AP7361EA-12E-13 is packaged in SOT223 (Type E), featuring exposed thermal pad connected to GND for enhanced heat dissipation. The 3-pin configuration simplifies layout while supporting high-current capability via wide copper pours on PCB.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN) | Input supply connection | Bypassed with ≥1µF ceramic capacitor; accepts 2.2V–6.0V input; must be routed with low-inductance trace. |
| 2 (GND) | Ground reference and thermal path | Primary ground return; thermal pad (EP) must be soldered to large copper area tied to system GND for θJA = 110°C/W. |
| 3 (OUT) | Regulated output | Delivers 1.2V ±1%; requires ≥2.2µF MLCC output capacitor; low ESR improves transient response. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low dropout | 600mV max at 1A for 1.2V output - enables use with single-cell Li-ion (3.0V min) or dual-cell alkaline inputs. |
| Enable-controlled operation | Active-high EN pin with 3.0MΩ internal pull-down - allows precise power sequencing and zero-quiescent shutdown (<0.05µA). |
| Foldback short-circuit protection | Clamps output to ~400mA during hard short - limits power dissipation and prevents thermal runaway without latch-off. |
| Stable with low-ESR capacitors | Works with ≥2.2µF MLCC, tantalum, or polymer caps - eliminates need for electrolytic capacitors in space-constrained designs. |
| Wide ambient temperature range | -40°C to +85°C operation - qualified for indoor consumer electronics including set-top boxes and smart displays. |
Applications
| LCD Monitor Logic Rail | Set-Top Box Audio DAC Supply |
|---|---|
|
Use Scenario: Powering 1.2V core logic of timing controller (TCON) ICs in 24–32-inch LCD monitors. IC Role / Device Role / Timing Role: Primary low-noise post-regulator delivering clean 1.2V from a 3.3V buck converter output. Use Value: 75dB PSRR suppresses switching ripple from upstream DC/DC, preventing image noise and timing jitter in pixel clock generation. |
Use Scenario: Supplying analog front-end (AFE) and stereo DAC circuitry in HDMI-enabled set-top boxes. IC Role / Device Role / Timing Role: Low-noise, low-quiescent LDO providing stable 1.2V bias for precision audio conversion stages. Use Value: 68µA IQ extends standby time; 1A rating handles burst-mode audio processing without dropout or thermal throttling. |
| Smart TV Mainboard USB Hub | Home Appliance MCU Core Supply |
|
Use Scenario: Regulating 1.2V for USB 2.0 hub controller ICs on smart TV mainboards with multiple peripheral interfaces. IC Role / Device Role / Timing Role: High-current LDO with fast load transient response (200µs recovery) for dynamic USB enumeration events. Use Value: 360mV dropout (at 3.3V) and 1A capacity ensure uninterrupted USB host operation during simultaneous device attachment. |
Use Scenario: Delivering 1.2V core voltage to 32-bit ARM Cortex-M microcontrollers in Wi-Fi-enabled washing machines and refrigerators. IC Role / Device Role / Timing Role: Enable-controlled power source enabling MCU deep-sleep mode with <0.05µA shutdown current. Use Value: Thermal shutdown (150°C) and foldback protection prevent field failures caused by enclosure overheating or motor drive coupling. |
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-1202E/MB | 150mA max output, 600mV dropout at 150mA, no enable pin, SOT23-5 package | Limited to low-power MCU peripherals; lacks EN control and thermal shutdown hysteresis | Select only for sub-150mA, non-sequenced, cost-sensitive applications where board space is critical. |
| Torex XC6210B122MR-G | 1A output, 250mV dropout at 1A (1.2V), 25µA IQ, SOT23-5, no thermal shutdown | Lower dropout and IQ but missing thermal protection and foldback current limiting | Prefer where ultra-low IQ dominates reliability requirements and thermal derating is guaranteed by system-level cooling. |
Compared with MCP1703T-1202E/MB and XC6210B122MR-G, AP7361EA-12E-13 uniquely combines 1A current, integrated EN, full thermal/short-circuit protection, and SOT223 thermal performance-making it suitable for unattended, higher-power consumer electronics where safety margins and long-term reliability are mandatory.
Availability
AP7361EA-12E-13 is available at Aetrix Electronics and suitable for LCD monitor logic rails, set-top box audio DAC supplies, and home appliance MCU core supplies requiring stable component supply, consistent parametric performance, and long-term industrial availability.
Supply support for AP7361EA-12E-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 ICs, with manufacturing certified to IATF 16949 and environmental compliance to RoHS 3 and halogen-free standards.
The AP7361EA belongs to Diodes' high-performance LDO family targeting consumer and industrial power management, designed specifically for low-noise, high-current, enable-controlled regulation in space- and thermally-constrained applications.
FAQ
What is the minimum input voltage required for AP7361EA-12E-13 to regulate 1.2V output at 1A?
The minimum input voltage is determined by dropout: at 1A, typical dropout is 600mV for 1.2V output, so VIN(min) = 1.2V + 0.6V = 1.8V. However, the absolute minimum specified input is 2.2V per datasheet - this accounts for worst-case process/temp variation and ensures guaranteed regulation across -40°C to +85°C ambient.
Can AP7361EA-12E-13 be used without connecting the EN pin?
Yes - the EN pin has an internal 3.0MΩ pull-down resistor, so leaving it unconnected defaults the device to enabled state. For guaranteed startup, tie EN directly to IN. Do not float EN in noisy environments, as leakage or coupling could cause erratic enable behavior.
Is the SOT223 package of AP7361EA-12E-13 lead-free and RoHS-compliant?
Yes - AP7361EA-12E-13 uses a fully lead-free "Green" molding compound compliant with EU RoHS 2015/863/EU (RoHS 3), containing <900ppm bromine, <900ppm chlorine, and <1000ppm antimony. No intentionally added lead; fully halogen- and antimony-free.
Does AP7361EA-12E-13 require an external output capacitor, and what type is recommended?
Yes - a minimum 2.2µF ceramic capacitor is required between OUT and GND for stability. MLCCs are preferred due to low ESR; tantalum or polymer capacitors are also acceptable. Larger values improve load transient response but are not required for basic regulation.
AP7361EA-12E-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):
- 1.2V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- -
- Current - Output:
- 1A
- Current - Quiescent (Iq):
- 91 µA
- Current - Supply (Max):
- -
- PSRR:
- 75dB ~ 55dB (1kHz ~ 10kHz)
- Control Features:
- Current Limit
- Protection Features:
- Over Current, Over Temperature, Short Circuit
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-223-3
AP7361EA-12E-13 FAQ
1.How can I place an order for AP7361EA-12E-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP7361EA-12E-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-12E-13 reliable?
The price and inventory of AP7361EA-12E-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-12E-13 is usually 5 days.
3.What payment methods are accepted for AP7361EA-12E-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP7361EA-12E-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP7361EA-12E-13?
AP7361EA-12E-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP7361EA-12E-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-12E-13?
For technical support, including AP7361EA-12E-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP7361EA-12E-13 requirements.
6.How does Aetrix verify that AP7361EA-12E-13 is sourced from the original manufacturer or authorized distributors?
All AP7361EA-12E-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-12E-13 meets industry standards.
7.What is the process for return or replacement of AP7361EA-12E-13?
All AP7361EA-12E-13 units undergo pre-shipment inspection (PSI). If there is an issue with AP7361EA-12E-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-12E-13 part is unused and in its original packaging.
Return procedure for AP7361EA-12E-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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