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Diodes Incorporated AP7361C-Y5-13
- Part No.:
- AP7361C-Y5-13
- Manufacturer:
- Diodes Incorporated
- Package:
- SOT-89-5/6
- Datasheet:
-
AP7361C-Y5-13.pdf
- Description:
- IC REG LINEAR POS ADJ 1A SOT89-5
- Quantity:
- Payment:
- Shipping:
Inventory:135,511
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Product details
Overview
AP7361C-Y5-13 from Diodes Incorporated is a 1A adjustable/fixed-output ultra-low dropout linear regulator with enable, designed for point-of-load regulation in space-constrained systems. It delivers ±1% output voltage accuracy, 360mV dropout at 3.3V/1A, and 60µA typical quiescent current, supporting fixed outputs (1.0V–3.3V) or adjustable 0.8V–5.0V via external resistor divider. It is used in LCD-TV power rails, set-top-box AV subsystems, and battery-powered audio modules.
For engineers reviewing the AP7361C-Y5-13 datasheet, AP7361C-Y5-13 pinout, AP7361C-Y5-13 application, or AP7361C-Y5-13 equivalent, key selection criteria include dropout performance at 1A load, EN pin logic thresholds (VIH = 1.0V min), thermal shutdown threshold (150°C), and compatibility with 2.2µF MLCC output capacitors without external compensation.
Technical Context
The AP7361C-Y5-13 integrates a PMOS pass element, band-gap reference, error amplifier, and fold-back current limiting. Its EN pin enables direct microcontroller control with 1.0V minimum VIH and 0.3V maximum VIL, while internal 0.8V reference supports precise adjustable output scaling.
It features thermal shutdown with 20°C hysteresis (150°C trip, 130°C recovery) and stable operation across –40°C to +85°C ambient. The SOT89-5 package provides 150°C/W junction-to-ambient thermal resistance and supports up to 800mW power dissipation under recommended PCB layout.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 1.0A max - sustains full-rated load without foldback under VIN ≥ VOUT +1V and proper thermal management. |
| Dropout Voltage | 360mV typ @ 3.3V/1A - enables regulation from 3.66V input, critical for Li-ion single-cell or 3.3V rail boosting. |
| Quiescent Current | 60µA typ - minimizes standby power loss in always-on subsystems like remote control receivers or sensor wake logic. |
| Output Accuracy | ±1% @ 100mA - ensures tight voltage tolerance for sensitive analog circuitry (e.g., ADC references, audio DACs). |
| PSRR | 75dB @ 1kHz - suppresses switching noise from upstream DC/DC converters feeding the LDO input. |
| Enable Threshold | VIH = 1.0V min - compatible with 1.8V/3.3V GPIO without level-shifting; VIL = 0.3V max ensures clean low-state rejection. |
| Thermal Shutdown | 150°C junction - protects against sustained overload or poor heatsinking; hysteresis prevents oscillation near limit. |
Pinout & Package
SOT89-5 package: 5-pin thermally enhanced plastic package with exposed tab (pin 4 = GND), footprint optimized for low thermal resistance on 1"x1" FR-4 board.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN) | Input supply connection | Accepts 2.2V–6.0V; requires ≥1µF ceramic bypass capacitor placed adjacent to pin for stability and noise rejection. |
| 2 (GND) | Power ground reference | Common return for IN, OUT, EN, and ADJ; must be low-impedance path to minimize ground bounce during load transients. |
| 3 (OUT) | Regulated output node | Delivers stable voltage; requires ≥2.2µF ceramic capacitor directly between OUT and GND for guaranteed stability. |
| 4 (GND) | Thermal pad / power ground | Exposed tab connected internally to GND; soldered to PCB copper pour to reduce θJA from 150°C/W to ≤120°C/W. |
| 5 (EN) | Enable control input | Active-high logic interface; pulled high internally via 3.0MΩ resistor - can be left open for always-on operation. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low dropout | 360mV @ 3.3V/1A - extends usable input range in battery-powered devices down to ~3.66V before dropout. |
| Adjustable/fixed dual mode | Supports both fixed outputs (1.0V–3.3V) and 0.8V–5.0V adjustable via R1/R2 divider - eliminates BOM variants for multiple voltage rails. |
| Fold-back short-circuit protection | Limits output to 400mA during hard short - reduces power dissipation and prevents thermal runaway during fault conditions. |
| Stability with small MLCC | Guaranteed stable with ≥2.2µF X5R/X7R ceramic capacitor - avoids bulkier tantalum or electrolytic caps, saving board space and cost. |
| Green packaging | Halogen- and antimony-free, RoHS 3 compliant - meets IEC 61249-2-21 and automotive ELV directive requirements. |
Applications
| LCD-TV Power Management | Set-Top Box Audio Subsystem |
|---|---|
|
Use Scenario: Providing clean 3.3V bias for HDMI PHY and display timing controller in slim-panel LCD TVs. IC Role / Device Role / Timing Role: Primary post-regulator converting 5V DC/DC output to low-noise 3.3V for high-speed digital interfaces. Use Value: 75dB PSRR at 1kHz suppresses switching ripple from upstream buck converter, preventing HDMI link errors and pixel jitter. |
Use Scenario: Supplying 1.8V to audio DAC and 2.5V to analog amplifier stage in cable/satellite STB mainboard. IC Role / Device Role / Timing Role: Dual-rail LDO delivering isolated, low-ripple supplies for mixed-signal audio processing chain. Use Value: ±1% output accuracy ensures consistent DAC full-scale voltage and amplifier gain calibration across temperature. |
| Smart Home Appliance MCU Core | Portable Media Player Codec Bias |
|
Use Scenario: Regulating 1.2V core voltage for ARM Cortex-M4 MCU in Wi-Fi-enabled washing machine control board. IC Role / Device Role / Timing Role: Low-quiescent-current LDO enabling deep-sleep mode with <100µA system standby draw. Use Value: 60µA IQ allows >1-year battery life in wireless sensor nodes using coin-cell backup during AC power loss. |
Use Scenario: Delivering 3.3V to stereo audio codec and SD card interface in handheld MP3 player with Li-Po battery. IC Role / Device Role / Timing Role: Main system LDO supporting dynamic voltage scaling during playback vs. idle states. Use Value: 200µs startup time enables rapid wake-from-suspend, reducing perceived latency when resuming music playback. |
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 |
|---|---|---|---|
| AP2204K-3.3TRG1 | Fixed 3.3V only; 300mA output; no EN pin; SOT-23-5 package | Lacks enable control and 1A capability - suitable only for low-power, always-on rails | Select when board space is critical and load current ≤300mA; not drop-in for AP7361C-Y5-13 due to pinout and current mismatch. |
| MCP1703T-3302E/MB | 3.3V fixed; 250mA; 1.8µA IQ; SOT-23-5; no thermal shutdown | Optimized for ultra-low IQ but lacks current capacity and fault protection - limited to sensor bias rails | Choose only for micropower sensor nodes where 250mA peak load and absence of thermal shutdown are acceptable. |
Compared with AP2204K-3.3TRG1 and MCP1703T-3302E/MB, the AP7361C-Y5-13 uniquely combines 1A output, enable control, thermal shutdown, and 360mV dropout in SOT89-5 - making it the sole option among the three for thermally demanding, medium-power, controllable rails.
Availability
AP7361C-Y5-13 is available at Aetrix Electronics and suitable for LCD-TV power management, set-top box audio subsystems, and smart home appliance MCU core regulation requiring stable component supply across industrial temperature range and long-term production continuity.
Supply support for AP7361C-Y5-13 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 ICs for power management, signal integrity, and connectivity applications.
The AP7361C belongs to Diodes' high-performance LDO portfolio targeting space-constrained, thermally sensitive applications such as consumer displays, home entertainment, and portable electronics where low dropout and low IQ are essential.
FAQ
What is the minimum input voltage required for stable 3.3V output at 1A load?
The AP7361C-Y5-13 requires VIN ≥ VOUT + VDROPOUT. At 3.3V/1A, typical dropout is 360mV, so minimum VIN is 3.66V. Absolute minimum specified input is 2.2V, but operation below 3.66V results in unregulated output. Input must also remain within absolute max rating of 6.5V.
Can the EN pin be left floating, or must it be tied high/low?
The EN pin has an internal 3.0MΩ pull-down resistor, so it defaults to OFF when floating. For always-on operation, tie EN directly to IN. Do not leave floating in production designs - unintended noise coupling could cause erratic enable/disable behavior. Driving EN with a microcontroller GPIO is fully supported.
Is an external capacitor required on the ADJ pin for fixed-output versions?
No. The ADJ pin is NC (no connection) for fixed-output variants like AP7361C-Y5-13 configured for 3.3V. Only adjustable versions use ADJ with resistor divider. In fixed mode, ADJ must remain unconnected - no capacitor or resistor is needed or permitted.
How does thermal performance differ between SOT89-5 and U-DFN3030-8 packages?
SOT89-5 has θJA = 150°C/W on 1"x1" FR-4; U-DFN3030-8 achieves 70°C/W on 2"x2" board with thermal vias. For identical 1A/3.3V operation, SOT89-5 junction rise is ~54°C above ambient, while U-DFN3030-8 rises only ~25°C - enabling higher power density or extended ambient temperature margin in compact layouts.
AP7361C-Y5-13 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:
- 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):
- 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-Y5-13 FAQ
1.How can I place an order for AP7361C-Y5-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP7361C-Y5-13 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-Y5-13 reliable?
The price and inventory of AP7361C-Y5-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP7361C-Y5-13 is usually 5 days.
3.What payment methods are accepted for AP7361C-Y5-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP7361C-Y5-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP7361C-Y5-13?
AP7361C-Y5-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP7361C-Y5-13 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-Y5-13?
For technical support, including AP7361C-Y5-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP7361C-Y5-13 requirements.
6.How does Aetrix verify that AP7361C-Y5-13 is sourced from the original manufacturer or authorized distributors?
All AP7361C-Y5-13 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-Y5-13 meets industry standards.
7.What is the process for return or replacement of AP7361C-Y5-13?
All AP7361C-Y5-13 units undergo pre-shipment inspection (PSI). If there is an issue with AP7361C-Y5-13, 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-Y5-13 part is unused and in its original packaging.
Return procedure for AP7361C-Y5-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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