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Diodes Incorporated AP7361EA-SPR-13
- Part No.:
- AP7361EA-SPR-13
- Manufacturer:
- Diodes Incorporated
- Package:
- 8-SOIC (0.154", 3.90mm Width) Exposed Pad
- Datasheet:
-
AP7361EA-SPR-13.pdf
- Description:
- LDO CMOS HICURR SO-8EP T&R 2.5K
- Quantity:
- Payment:
- Shipping:
Inventory:6,741
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Product details
Overview
AP7361EA-SPR-13 from Diodes Incorporated is a 1A ultra-low dropout linear regulator with adjustable/fixed output voltage, enable control, ±1% output accuracy, 360mV dropout at 3.3V/1A, and 68µA quiescent current-designed for power rail regulation in LCD TVs, set-top boxes, and battery-powered consumer electronics.
For engineers reviewing the AP7361EA-SPR-13 datasheet, AP7361EA-SPR-13 pinout, AP7361EA-SPR-13 application, or AP7361EA-SPR-13 equivalent, key selection criteria include dropout voltage at full load, EN logic thresholds, thermal resistance (θJA = 100°C/W), PSRR (75dB @ 1kHz), and compatibility with 2.2µF MLCC output capacitors.
Technical Context
The AP7361EA-SPR-13 integrates a PMOS pass element, precision 0.8V bandgap reference, error amplifier, and foldback current limiting. Its architecture supports both fixed-output (1.0V–3.3V) and adjustable-mode operation via external resistor divider on the ADJ pin.
Enable functionality is implemented as active-high digital input (VIH ≥ 1.0V, VIL ≤ 0.3V), with internal 3.0MΩ pull-down resistor. 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 Current | 1.0A maximum continuous-supports high-current rails in compact consumer devices without external heat sinking. |
| Dropout Voltage | 360mV typical at 3.3V/1A-enables stable regulation from 3.66V input, critical for single-cell Li-ion or 3.3V system margin. |
| Quiescent Current | 68µA typical-minimizes standby power loss in always-on subsystems like remote receivers or real-time clocks. |
| Output Accuracy | ±1% over line/load/temperature-ensures reliable logic-level compliance for 1.8V/2.5V/3.3V I/O domains. |
| PSRR | 75dB @ 1kHz-suppresses switching noise from upstream DC/DC converters feeding the LDO input. |
| Thermal Resistance | θJA = 100°C/W (SO-8EPR)-requires ≥2 cm² copper pour with thermal vias for 1W dissipation at +85°C ambient. |
| Enable Threshold | VIH = 1.0V min, VIL = 0.3V max-compatible with 1.8V/3.3V GPIO without level-shifting. |
Pinout & Package
AP7361EA-SPR-13 uses the SO-8EPR package: 8-pin exposed-pad surface-mount with GND-connected thermal pad (EP). Pin 1 = IN, Pin 2 = GND, Pin 3 = ADJ/NC (adjustable mode only), Pin 4 = EN, Pin 5 = OUT, Pin 6 = NC, Pin 7 = NC, Pin 8 = GND. Exposed pad must be soldered to PCB ground plane for thermal performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN) | Input voltage supply | Accepts 2.2–6.0V; requires ≥1µF ceramic bypass capacitor placed adjacent to pin for stability. |
| 2, 8 (GND) | Ground reference | Dual GND pins reduce impedance; connect both to low-impedance ground plane to minimize noise coupling. |
| 3 (ADJ/NC) | Feedback reference node | Used only in adjustable mode; connects to resistor divider (R1/R2) setting VOUT = 0.8V × (1 + R1/R2). |
| 4 (EN) | Enable control input | Active-high logic interface; internal 3.0MΩ pull-down ensures default-off state if left floating. |
| 5 (OUT) | Regulated output | Delivers up to 1A; requires ≥2.2µF MLCC output capacitor with ESR < 100mΩ for stability. |
| 6, 7 (NC) | No connection | Not internally bonded; must remain unconnected and un-routed on PCB to avoid parasitic coupling. |
| EP (Exposed Pad) | Thermal dissipation path | Must be soldered to ≥2 cm² GND copper area with ≥4 thermal vias (0.3mm diameter) for θJA = 100°C/W. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low dropout | 360mV at 3.3V/1A enables operation from tight-input systems like USB-PD or multi-rail PMIC outputs. |
| 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 with 2.2µF MLCC, tantalum, or polymer caps-eliminates need for large electrolytic bulk capacitance. |
| Wide input range | 2.2–6.0V operation supports direct connection to Li-ion (3.0–4.2V), 5V USB, or 3.3V/2.5V intermediate rails. |
| Low temperature coefficient | ±100ppm/°C output drift ensures <±1.7% variation across –40°C to +85°C-critical for industrial-grade timing rails. |
Applications
| LCD TV Power Management | Set-Top Box AV Core Rail |
|---|---|
|
Use Scenario: Supplies clean 3.3V to HDMI PHY and video decoder ICs in 4K LCD TVs. IC Role / Device Role / Timing Role: Primary post-regulator delivering low-noise, high-PSRR power to noise-sensitive analog video circuitry. Use Value: 75dB PSRR at 1kHz suppresses switching ripple from upstream 12V-to-5V buck converter, preventing visible banding artifacts. |
Use Scenario: Powers 1.2V core logic of ARM-based SoC in cable/satellite set-top boxes. IC Role / Device Role / Timing Role: Adjustable-mode LDO generating precise 1.2V from 3.3V intermediate rail, controlled by SoC enable signal. Use Value: 68µA quiescent current extends standby time during deep-sleep modes without compromising wake-up latency. |
| Smart Home Appliance MCU Rail | Portable Audio DAC Supply |
|
Use Scenario: Provides 1.8V to Wi-Fi/BLE microcontroller in smart thermostats and lighting hubs. IC Role / Device Role / Timing Role: Fixed-output LDO with EN pin synchronized to MCU sleep/wake cycles for dynamic power gating. Use Value: 360mV dropout allows operation down to 2.16V input-maintains regulation during brown-out events on 2xAA battery packs. |
Use Scenario: Delivers ultra-low-noise 2.5V to stereo audio DAC in Bluetooth headphones. IC Role / Device Role / Timing Role: Low-ESR-stable LDO decoupling DAC analog supply from noisy digital domain. Use Value: ±1% output accuracy ensures consistent full-scale voltage reference, preserving 24-bit DAC resolution. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar low-dropout linear regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AP7362-33SPR-13 | Fixed 3.3V output only; identical SO-8EPR package and 1A rating but lacks ADJ pin and adjustable mode. | Suitable only where 3.3V is required-no flexibility for other voltages or feedback tuning. | Select when design requires strict 3.3V output and simplified BOM; avoids unused ADJ trace routing. |
| MCP1703T-3302E/MB | 150mA output, SOT-23 package, 600mV dropout at 150mA-lower current capacity and higher dropout than AP7361EA-SPR-13. | Targeted at ultra-low-power sensor nodes, not medium-power consumer loads. | Choose only for space-constrained, sub-200mA applications where thermal performance is less critical. |
Compared with AP7361EA-SPR-13, AP7362-33SPR-13 trades adjustability for pin-count reduction, while MCP1703T-3302E/MB sacrifices current capability and dropout performance for footprint minimization-neither matches the 1A/360mV/68µA combination in SO-8EPR.
Availability
AP7361EA-SPR-13 is available at Aetrix Electronics and suitable for LCD TV power management, set-top box AV core rails, smart home appliance MCU rails, and portable audio DAC supplies requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for AP7361EA-SPR-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 for power management, signal integrity, and connectivity applications.
The AP7361EA belongs to Diodes' high-performance LDO family targeting consumer electronics with stringent low-noise, low-quiescent-current, and fast-transient-response requirements.
FAQ
What is the minimum output capacitor value required for stability with AP7361EA-SPR-13?
The AP7361EA-SPR-13 is stable with ≥2.2µF ceramic output capacitors having ESR < 100mΩ. This value is verified across –40°C to +85°C ambient and applies to MLCC, polymer, and solid tantalum types. Larger values improve transient response but are not required for basic stability.
Can AP7361EA-SPR-13 operate without an external load?
Yes-the AP7361EA-SPR-13 remains stable and regulated with zero load current. No minimum load is required, making it suitable for always-on monitoring circuits or standby power rails where downstream circuitry may be fully powered down.
How does the EN pin behave when left unconnected?
The EN pin has an internal 3.0MΩ pull-down resistor, so it defaults to logic-low when floating-keeping the regulator disabled. To ensure reliable startup, EN must be actively driven above 1.0V (VIH min) using a GPIO or dedicated enable signal; tying to IN is acceptable for always-on operation.
What thermal derating applies to AP7361EA-SPR-13 in SO-8EPR package?
In SO-8EPR, AP7361EA-SPR-13 delivers full 1A output up to +85°C ambient only with ≥2 cm² GND copper area and ≥4 thermal vias under the exposed pad. At +70°C ambient, maximum continuous current drops to ~900mA; at +85°C, it falls to ~750mA unless additional airflow or heatsinking is applied.
AP7361EA-SPR-13 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width) Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Output Configuration:
- Positive
- Output Type:
- Adjustable
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 6V
- Voltage - Output (Min/Fixed):
- 0.8V
- Voltage - Output (Max):
- 5V
- Voltage Dropout (Max):
- 0.36V @ 1A (Typ)
- Current - Output:
- 1A
- Current - Quiescent (Iq):
- 91 µA
- Current - Supply (Max):
- -
- PSRR:
- 75dB ~ 55dB (1kHz ~ 10kHz)
- Control Features:
- Current Limit, Enable
- Protection Features:
- Over Current, Over Temperature, Short Circuit
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SO-EP
AP7361EA-SPR-13 FAQ
1.How can I place an order for AP7361EA-SPR-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP7361EA-SPR-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-SPR-13 reliable?
The price and inventory of AP7361EA-SPR-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-SPR-13 is usually 5 days.
3.What payment methods are accepted for AP7361EA-SPR-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP7361EA-SPR-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP7361EA-SPR-13?
AP7361EA-SPR-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP7361EA-SPR-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-SPR-13?
For technical support, including AP7361EA-SPR-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP7361EA-SPR-13 requirements.
6.How does Aetrix verify that AP7361EA-SPR-13 is sourced from the original manufacturer or authorized distributors?
All AP7361EA-SPR-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-SPR-13 meets industry standards.
7.What is the process for return or replacement of AP7361EA-SPR-13?
All AP7361EA-SPR-13 units undergo pre-shipment inspection (PSI). If there is an issue with AP7361EA-SPR-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-SPR-13 part is unused and in its original packaging.
Return procedure for AP7361EA-SPR-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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