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Diodes Incorporated AP78L05YG-13
- Part No.:
- AP78L05YG-13
- Manufacturer:
- Diodes Incorporated
- Package:
- TO-243AA
- Datasheet:
-
AP78L05YG-13.pdf
- Description:
- IC REG LINEAR 5V 100MA SOT89-3
- Quantity:
- Payment:
- Shipping:
Inventory:2,707
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Product details
Overview
AP78L05YG-13 from Diodes Incorporated is a fixed-output +5.0 V, 100 mA three-terminal positive linear voltage regulator in SOT89 package with ±5% output voltage tolerance over −20°C to +125°C, thermal overload protection, and internal short-circuit current limiting-used for local regulation in DVD players, set-top boxes, and logic power supplies.
For engineers reviewing the AP78L05YG-13 datasheet, AP78L05YG-13 pinout, AP78L05YG-13 application, or AP78L05YG-13 equivalent, key selection criteria include dropout voltage (1.0 V at 40 mA), ripple rejection (47–62 dB at 120 Hz), quiescent current (3–5 mA), and SO-8/SOT89/TO92 package compatibility for board-level power integrity.
Technical Context
The AP78L05YG-13 implements a monolithic series pass transistor with built-in safe-area protection that reduces short-circuit current as pass transistor voltage increases. It uses internal bandgap reference and error amplifier to maintain stable 5.0 V output under varying load and line conditions.
Thermal shutdown activates at 150°C junction temperature, and current limiting caps peak output at 140 mA. No external components are required beyond input (0.33 µF) and output (0.1 µF) capacitors for stability-enabling drop-in replacement of Zener/resistor regulators in low-noise analog and digital subsystems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 5.0 V ±5% (4.75–5.25 V) across −20°C to +125°C ensures TTL/CMOS logic compatibility and stable microcontroller core supply. |
| Max Output Current | 100 mA continuous (140 mA peak) supports small-signal amplifiers, sensor interfaces, and peripheral ICs without external heatsinking. |
| Input Voltage Range | 7–20 V enables use with common 9 V or 12 V wall adapters and battery-backed rails while maintaining regulation. |
| Dropout Voltage | 1.0 V typical at 40 mA (ΔVIN−VOUT) allows operation with minimal headroom-critical for battery-powered devices. |
| Ripple Rejection | 47–62 dB at 120 Hz suppresses AC line noise and switching supply coupling into sensitive analog circuitry. |
| Quiescent Current | 3–5 mA enables low-power standby modes in consumer electronics without sacrificing startup speed or regulation accuracy. |
| Thermal Resistance θJA | 145°C/W (SOT89) permits 100 mA operation up to +85°C ambient on standard 2 oz copper PCB without forced airflow. |
Pinout & Package
AP78L05YG-13 is housed in a lead-free, RoHS-compliant SOT89-3 plastic surface-mount package with 1.5 mm pitch, 4.5 mm × 2.5 mm footprint, and exposed thermal pad for enhanced heat dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (VOUT) | Regulated Output | Delivers stable +5.0 V to load; requires 0.1 µF ceramic capacitor to ground for high-frequency noise suppression. |
| 2 (GND) | Ground Reference | Common return path for input and output currents; must be low-impedance connection to minimize regulation error. |
| 3 (VIN) | Unregulated Input | Accepts 7–20 V DC; requires 0.33 µF ceramic capacitor within 3 inches of pin to prevent instability under transient loads. |
Key Features
| Feature | Design Value |
|---|---|
| Fixed 5.0 V output | Eliminates external resistor network-reduces BOM count and layout sensitivity in cost-sensitive consumer designs. |
| ±5% output tolerance | Guarantees compliance with 5 V TTL and 3.3 V LDO-fed logic families without post-regulation trimming. |
| Internal thermal shutdown | Prevents permanent damage during sustained overload or poor PCB thermal design-no external thermal sensor needed. |
| No external components required | Reduces bill-of-materials and assembly steps versus discrete Zener/resistor regulators-improves manufacturing yield. |
| Lead-free & RoHS compliant | Meets EU Directive 2011/65/EU with green molding compound-supports environmental compliance for global consumer shipments. |
Applications
| DVD Player Power Supply | Set-Top Box Logic Rail |
|---|---|
Use Scenario: Local 5 V rail generation for MPEG decoder ASIC, servo motor driver, and front-panel display controller. IC Role / Device Role / Timing Role: Primary linear regulator supplying clean, low-noise 5 V to mixed-signal SoC and analog audio DACs. Use Value: 47–62 dB ripple rejection prevents 120 Hz hum from appearing in decoded audio output. |
Use Scenario: On-board 5 V regulation for HDMI interface ICs, IR receiver, and flash memory controller. IC Role / Device Role / Timing Role: Local point-of-load regulator decoupling main 12 V supply to reduce distribution losses and EMI. Use Value: 100 mA output current supports simultaneous operation of multiple peripherals without voltage droop. |
| CD-ROM Drive Controller | Industrial Logic Interface Module |
Use Scenario: Dedicated 5 V supply for spindle motor control logic, laser diode bias circuitry, and buffer RAM. IC Role / Device Role / Timing Role: Low-quiescent-current regulator enabling fast wake-from-standby response during disc access. Use Value: 3–5 mA quiescent current minimizes standby power draw-critical for Energy Star compliance. |
Use Scenario: Isolated 5 V rail for RS-232 transceivers, optocoupler inputs, and FPGA configuration memory. IC Role / Device Role / Timing Role: Robust local regulator with thermal and short-circuit protection for harsh industrial environments. Use Value: Safe-area protection limits fault energy during accidental output short-prevents PCB trace burnout. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fixed-output linear regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MC78L05ACZ | TO92 package only; ±5% tolerance; higher θJA (176°C/W); no green compound option | Limited to low-power, through-hole designs; unsuitable for high-density SMT layouts | Select when legacy TO92 footprint or manual assembly is required; avoid for thermally constrained SMT boards. |
| LM78L05ACM | SO-8 package; ±5% tolerance; 153°C/W θJA; same 100 mA rating but higher quiescent current (5.5 mA) | Better thermal performance than TO92 but larger footprint than SOT89; less efficient in standby | Choose for compatibility with existing SO-8 footprints or when board space allows larger package for easier rework. |
Compared with MC78L05ACZ and LM78L05ACM, AP78L05YG-13 offers superior thermal resistance (145°C/W) in the smallest SMT footprint, lower quiescent current, and RoHS/green compliance-making it optimal for space- and efficiency-constrained consumer electronics.
Availability
AP78L05YG-13 is available at Aetrix Electronics and suitable for DVD players, set-top boxes, and CD-ROM drive controllers requiring stable component supply, consistent parametric performance, and long-term industrial availability.
Supply support for AP78L05YG-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 manufacturer of discrete semiconductors and analog ICs, specializing in high-reliability power management, signal integrity, and protection solutions for consumer, industrial, and automotive markets.
The AP78LXX series targets cost-sensitive, high-volume consumer electronics requiring robust, no-component-needed linear regulation-designed specifically for DVD, CD, and STB applications where size, thermal behavior, and regulatory compliance are critical.
FAQ
What is the minimum input voltage required for AP78L05YG-13 to maintain regulation?
The AP78L05YG-13 requires a minimum input voltage of 6.7 V to sustain line regulation at room temperature, increasing to 7.0 V across its full operating range (−20°C to +85°C ambient). This 1.0–1.3 V headroom reflects its dropout voltage specification under load.
Can AP78L05YG-13 replace a Zener diode/resistor regulator in an existing design?
Yes-AP78L05YG-13 improves output impedance by two orders of magnitude and reduces quiescent current versus Zener/resistor solutions. It requires only 0.33 µF input and 0.1 µF output capacitors, with no resistor recalculations or thermal derating adjustments needed.
Does AP78L05YG-13 require a heat sink for 100 mA operation?
No external heat sink is required for 100 mA operation at +85°C ambient when mounted on a standard 2 oz copper PCB with Diodes Inc.'s recommended SOT89 pad layout. Its θJA of 145°C/W ensures junction temperature remains below 125°C under these conditions.
Is AP78L05YG-13 compatible with lead-free reflow soldering processes?
Yes-AP78L05YG-13 is fully lead-free and RoHS-compliant, qualified for standard Pb-free reflow profiles (JEDEC J-STD-020D). Its green molding compound contains no bromine or antimony, meeting halogen-free requirements for consumer electronics.
AP78L05YG-13 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- TO-243AA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 20V
- Voltage - Output (Min/Fixed):
- 5V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- -
- Current - Output:
- 100mA
- Current - Quiescent (Iq):
- 5 mA
- Current - Supply (Max):
- -
- PSRR:
- 62dB (120Hz)
- Control Features:
- -
- Protection Features:
- Over Temperature, Short Circuit
- Operating Temperature:
- -20°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-89-3
AP78L05YG-13 FAQ
1.How can I place an order for AP78L05YG-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP78L05YG-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 AP78L05YG-13 reliable?
The price and inventory of AP78L05YG-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP78L05YG-13 is usually 5 days.
3.What payment methods are accepted for AP78L05YG-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP78L05YG-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP78L05YG-13?
AP78L05YG-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP78L05YG-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 AP78L05YG-13?
For technical support, including AP78L05YG-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP78L05YG-13 requirements.
6.How does Aetrix verify that AP78L05YG-13 is sourced from the original manufacturer or authorized distributors?
All AP78L05YG-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 AP78L05YG-13 meets industry standards.
7.What is the process for return or replacement of AP78L05YG-13?
All AP78L05YG-13 units undergo pre-shipment inspection (PSI). If there is an issue with AP78L05YG-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 AP78L05YG-13 part is unused and in its original packaging.
Return procedure for AP78L05YG-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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