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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Voltage Regulators - Linear, Low Drop Out (LDO) Regulators

Diodes Incorporated AP1119Y12L-13

Name: AP1119Y12L-13
Brand: Diodes Incorporated
SKU: AP1119Y12L-13
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: AP1119Y12L-13

Manufacturer:: Diodes Incorporated

Category:: Voltage Regulators - Linear, Low Drop Out (LDO) Regulators

Package:: SOT-89-5/6

Datasheet:: AP1119Y12L-13.pdf

Description:: IC REG LINEAR 12V 500MA SOT89-5

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Inventory:4,856

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Product details

Overview

AP1119Y12L-13 from Anachip Corp. is a 0.5A positive low-dropout fixed-output linear regulator with 12V output, TTL/CMOS-compatible enable input, 1.3V max dropout at full load, and SOT89-5L package. It delivers stable 12V supply for low-voltage ICs requiring tight regulation under transient loads, such as VGA card power rails and PC peripheral logic supplies.

For engineers reviewing the AP1119Y12L-13 datasheet, AP1119Y12L-13 pinout, AP1119Y12L-13 application, or AP1119Y12L-13 equivalent, key selection criteria include dropout voltage at 500mA, enable logic polarity and threshold, thermal resistance (θ_JA = 300°C/W), output voltage accuracy (±2%), and minimum load current requirement (5–10mA).

Technical Context

The AP1119Y12L-13 integrates a PNP pass transistor with internal current limiting and thermal shutdown circuitry. Its enable pin features an internal ~100kΩ pull-down resistor, supporting active-low TTL/CMOS control (V_EN ≤ 0.8V enables; ≥ 2.0V disables).

Designed for fixed-output operation only, it requires ≥13.5V input to regulate 12V output across full load (0–0.5A) and temperature (0–125°C junction), with guaranteed ripple rejection of 60–70dB at 120Hz and line/load regulation specified under pulsed testing to minimize self-heating effects.

Key Specifications

Parameter	Value and Actual Design Meaning
Output Voltage	12.0V ±2% (11.76–12.24V) at 10mA, 25°C; ensures compatibility with 12V-tolerant logic and analog subsystems
Max Dropout Voltage	1.3V at 0.5A load; allows operation from 13.5V min input up to 18V max, enabling use with unregulated 15V rails
Enable Threshold	V_EN(LOW) ≤ 0.8V (enable), V_EN(HIGH) ≥ 2.0V (disable); supports direct interface with 3.3V/5V microcontroller GPIO
Thermal Resistance	θ_JA = 300°C/W (no heatsink, no airflow); limits continuous 0.5A operation to ≤5W dissipation in ambient ≤50°C
Ripple Rejection	60–70dB at 120Hz with 25µF tantalum output cap; suppresses switching noise from upstream DC/DC converters
Load Regulation	100–120mV over 0–0.5A (at V_IN = 15V); maintains <1% output deviation across full load range

Pinout & Package

SOT89-5L thermally enhanced plastic package with exposed tab electrically connected to V_OUT; 4.5mm × 4.15mm footprint, 1.6mm height, recommended land pattern per Anachip spec.

Pin/Terminal	Circuit Role	Design Meaning
1	GND	Ground reference for control circuitry and feedback; must be low-impedance connection to system ground plane
2	V_IN	Input supply pin; requires ≥13.5V for 12V regulation; connect ≥100µF bulk capacitor between this pin and GND
3	V_OUT	Regulated 12V output; tab is internally connected to this pin-must be soldered to copper pour for thermal management
4	E_N	Active-low enable input; internal 100kΩ pull-down ensures default-on behavior when left floating or driven high-impedance
5	N/C	No-connect terminal; electrically isolated; no external connection required

Key Features

Feature	Design Value
Fast transient response	≤100µs recovery time for 100mA load step; minimizes undershoot/overshoot on 12V bus during dynamic logic switching
Built-in thermal shutdown	Activates at T_J ≥ 150°C; latches off until junction cools below ~135°C, protecting PCB traces and adjacent components
Output current limiting	Guaranteed 0.6A short-circuit current limit; prevents damage during output fault or capacitive overload
Good noise rejection	60–70dB PSRR at 120Hz; enables clean 12V supply for analog front-ends without additional LC filtering

Applications

VGA Card Power Supply

PC Peripheral Logic Rail

Use Scenario: Providing regulated 12V to analog video DACs and sync circuitry on discrete VGA graphics cards.

IC Role / Device Role / Timing Role: Primary 12V LDO regulator delivering low-noise, fast-response supply independent of main ATX rail fluctuations.

Use Value: Maintains <±2% output accuracy across 0–0.5A load and 0–75°C ambient, ensuring stable color fidelity and timing margin.

Use Scenario: Powering USB hub controllers, SATA bridge ICs, and PCIe switch logic in desktop add-in peripherals.

IC Role / Device Role / Timing Role: Local 12V regulator with enable control for power sequencing and hot-plug isolation.

Use Value: Active-low EN pin allows synchronized turn-on/turn-off with host controller reset signals, reducing inrush and standby leakage.

CD-ROM Drive Motor Control

Industrial I/O Module Supply

Use Scenario: Supplying 12V to spindle motor driver ICs and laser diode bias circuits in optical disc drives.

IC Role / Device Role / Timing Role: Secondary regulated rail decoupled from noisy motor commutation currents.

Use Value: 1.3V dropout enables operation from partially discharged 15V backup supplies during brownout conditions.

Use Scenario: Generating isolated 12V for RS-485 transceivers and relay driver stages in DIN-rail mounted I/O modules.

IC Role / Device Role / Timing Role: Fixed-output LDO with thermal protection for long-duration 12V loads in convection-cooled enclosures.

Use Value: θ_JA = 300°C/W and 150°C shutdown threshold support continuous 0.4A operation at 60°C ambient without forced air.

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
MIC29501-12WT	Higher I_OUT (5A), lower dropout (0.4V), TO-220 package, no enable pin	Requires heatsink; unsuitable for space-constrained SOT89 layouts; lacks power sequencing control	Select when >0.5A load or sub-1V dropout is mandatory; avoid if board area or EN functionality is critical
LD1085V12	1.5A output, 1.3V dropout, TO-220/TO-263, no enable, ±2% V_OUT tolerance	Larger footprint; no logic control; higher quiescent current (10mA vs 30µA EN leakage)	Prefer for cost-sensitive industrial designs where enable function is unused and thermal mass is available

Compared with MIC29501-12WT and LD1085V12, AP1119Y12L-13 uniquely balances compact SOT89-5L size, integrated enable, and precise 12V output in a legacy-qualified 0.5A LDO-ideal for retrofitting or space-limited legacy PC peripheral designs.

Availability

AP1119Y12L-13 is available at Aetrix Electronics and suitable for PC peripheral power rails, communication interface modules, and CD-ROM drive subsystems requiring stable component supply and long-term obsolescence support.

Supply support for AP1119Y12L-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

Anachip Corp. is a Taiwan-based semiconductor company founded in 1996, specializing in analog and mixed-signal power management ICs for consumer and computing applications.

The AP1119 series belongs to Anachip's fixed-output LDO product line, engineered specifically for low-noise, fast-transient 12V/5V/3.3V supply generation in PC add-in cards and optical storage devices.

FAQ

Is AP1119Y12L-13 lead-free and RoHS-compliant?

Yes. The "L" suffix in AP1119Y12L-13 explicitly denotes lead-free packaging per Anachip's ordering nomenclature. The device meets RoHS Directive 2011/65/EU requirements, with homogeneous lead content <1000 ppm, verified through material declarations and supplier test reports.

What is the minimum input voltage required for regulation at 12V output?

The minimum input voltage is 13.5V, derived from the 12V nominal output plus the guaranteed maximum dropout of 1.3V at 0.5A load. Operation below 13.5V results in unregulated output; Anachip specifies V_IN ≥ 13.5V for full 0–0.5A load range across 0–125°C junction temperature.

Can the EN pin be left unconnected, and what is its default state?

Yes, the EN pin may be left floating. Due to the internal ~100kΩ pull-down resistor, the default state is logic low (enable), resulting in normal regulator operation. No external pull-down is required unless noise immunity in high-EMI environments demands stronger grounding.

Does AP1119Y12L-13 require an input bypass capacitor, and what value is recommended?

Yes. Anachip recommends ≥100µF aluminum or tantalum capacitor at the VIN pin, placed within 5mm of the package. This stabilizes input voltage during load transients and prevents oscillation caused by source impedance interacting with internal control loop dynamics.

AP1119Y12L-13 Specifications

Product attributes: Attribute value

Manufacturer:: Diodes Incorporated

Series:: -

Package/Case:: SOT-89-5/6

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Output Configuration:: Positive

Output Type:: Fixed

Number of Regulators:: 1

Voltage - Input (Max):: 18V

Voltage - Output (Min/Fixed):: 12V

Voltage - Output (Max):: -

Voltage Dropout (Max):: 1.3V @ 500mA

Current - Output:: 500mA

Current - Quiescent (Iq):: 10 mA

Current - Supply (Max):: -

PSRR:: 60dB (120Hz)

Control Features:: Enable

Protection Features:: Over Current, Over Temperature

Operating Temperature:: 0°C ~ 150°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: SOT-89-5

AP1119Y12L-13 FAQ

1.How can I place an order for AP1119Y12L-13 through Aetrix?

Please submit a Request for Quotation (RFQ) for AP1119Y12L-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 AP1119Y12L-13 reliable?

The price and inventory of AP1119Y12L-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP1119Y12L-13 is usually 5 days.

3.What payment methods are accepted for AP1119Y12L-13?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP1119Y12L-13 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for AP1119Y12L-13?

AP1119Y12L-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your AP1119Y12L-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 AP1119Y12L-13?

For technical support, including AP1119Y12L-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP1119Y12L-13 requirements.

6.How does Aetrix verify that AP1119Y12L-13 is sourced from the original manufacturer or authorized distributors?

All AP1119Y12L-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 AP1119Y12L-13 meets industry standards.

7.What is the process for return or replacement of AP1119Y12L-13?

All AP1119Y12L-13 units undergo pre-shipment inspection (PSI). If there is an issue with AP1119Y12L-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 AP1119Y12L-13 part is unused and in its original packaging.

Return procedure for AP1119Y12L-13:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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