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

Diodes Incorporated AP2112R5A-2.6TRG1

Name: AP2112R5A-2.6TRG1
Brand: Diodes Incorporated
SKU: AP2112R5A-2.6TRG1
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: AP2112R5A-2.6TRG1

Manufacturer:: Diodes Incorporated

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

Package:: SOT-89-5/6

Datasheet:: AP2112R5A-2.6TRG1.pdf

Description:: IC REG LINEAR 2.6V 600MA SOT89-5

Quantity:: RFQ Add To RFQ list

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Product details

Overview

AP2112R5A-2.6TRG1 from Diodes Incorporated is a fixed-output 2.6V, 600mA CMOS low-dropout linear regulator with enable control and auto-discharge functionality, delivering ±1.5% output accuracy, 250mV typical dropout at full load, and 50µV_RMS output noise-designed for stable power delivery in portable LCD displays and embedded microcontroller core rails.

For engineers reviewing the AP2112R5A-2.6TRG1 datasheet, AP2112R5A-2.6TRG1 pinout, AP2112R5A-2.6TRG1 application, or AP2112R5A-2.6TRG1 equivalent, key selection criteria include guaranteed 600mA load capability, SOT89-5 (R5A) package thermal resistance of 47°C/W, fast transient response under line/load steps, and integrated 60Ω VOUT discharge path during shutdown.

Technical Context

The AP2112R5A-2.6TRG1 implements a CMOS-based LDO architecture with internal voltage reference, error amplifier, and PMOS pass transistor, enabling ultra-low quiescent current (55µA typ.) and sub-1µA standby draw. Its feedback loop is optimized for stability with 1.0µF ceramic, tantalum, or aluminum electrolytic output capacitors.

Enable logic operates with VIH ≥1.5V and VIL ≤0.4V, triggering internal shutdown that activates a dedicated 60Ω discharge path between VOUT and GND. Thermal shutdown engages at +160°C with +25°C hysteresis, and foldback current limiting limits short-circuit current to 50mA.

Key Specifications

Parameter	Value and Actual Design Meaning
Output Voltage	Fixed 2.6V ±1.5% - ensures precise core voltage for 2.5–2.7V logic domains without external resistive feedback.
Max Output Current	600mA minimum - supports sustained operation for mid-power SoCs and display drivers without derating.
Dropout Voltage	250mV typical @600mA - enables regulation from 2.85V input, critical for single-cell Li-ion or 3.3V rail post-regulation.
PSRR	−65dB @100Hz/1kHz - suppresses switching noise from upstream DC/DC converters feeding the LDO input.
Output Noise	50µV_RMS (10Hz–100kHz) - minimizes jitter in analog sensor interfaces and RF subsystems powered from this rail.
Quiescent Current	55µA typical - extends battery life in always-on monitoring circuits where low I_Q directly impacts runtime.
Operating Temp	−40°C to +85°C - qualified for industrial-grade embedded systems including automotive infotainment displays.

Pinout & Package

SOT89-5 (R5A) package: 5-pin thermally enhanced plastic surface-mount outline with exposed thermal pad (pin 4 = GND), footprint compatible with JEDEC TO-243AA. Thermal resistance θ_JA = 120°C/W, θ_JC = 47°C/W.

Pin/Terminal	Circuit Role	Design Meaning
1	VOUT	Regulated 2.6V output - connects to load; requires ≥1.0µF ceramic capacitor to GND for stability.
2	VIN	Input supply (2.5–6.0V) - must be filtered; reverse-voltage protected up to −0.3V.
3	NC	No connection - electrically isolated; no PCB trace or solder required.
4	GND	Power ground - ties to thermal pad; primary return path for load and internal circuitry.
5	EN	Active-high enable - drives high (>1.5V) to activate regulator; pulled down internally via 3MΩ resistor when floating.

Key Features

Feature	Design Value
Auto-discharge on disable	60Ω internal VOUT-to-GND switch - prevents residual voltage hold-up on downstream circuits during sleep mode.
Stable with 1.0µF output cap	Compatible with X5R/X7R ceramic, tantalum, and aluminum electrolytic - reduces BOM count and board area vs. legacy LDOs requiring ≥10µF.
Foldback short-circuit protection	50mA current limit - limits power dissipation during output shorts, preventing thermal runaway in unattended systems.
Low-noise regulation	50µV_RMS broadband noise - avoids signal integrity degradation in ADC reference supplies and audio codec bias rails.
High PSRR at low frequency	−65dB @100Hz - rejects ripple from buck converter switching edges before they couple into sensitive analog sections.

Applications

LCD Monitor Power Rail

Portable DVD Player Core Supply

Use Scenario: Powers 2.6V gate driver ICs and timing controllers in 10–24-inch LCD panels with dynamic backlight dimming.

IC Role / Device Role / Timing Role: Primary post-regulator delivering clean, low-noise 2.6V from a 3.3V intermediate rail.

Use Value: 250mV dropout enables >90% efficiency at full panel brightness; ±1.5% accuracy maintains display gamma consistency across temperature.

Use Scenario: Supplies 2.6V to MPEG decoder SoC cores and video DACs in battery-operated DVD players.

IC Role / Device Role / Timing Role: Low-quiescent-current LDO enabling <5µA system deep-sleep current when EN is asserted low.

Use Value: 55µA I_Q and 0.01µA standby extend alkaline battery life to >8 hours playback; auto-discharge prevents latch-up during wake-from-sleep transitions.

Laptop Subsystem Rail

Industrial HMI Display Module

Use Scenario: Provides 2.6V to touch controller ASICs and USB PHY transceivers in ultrabook docking stations.

IC Role / Device Role / Timing Role: Secondary LDO decoupling high-speed digital interfaces from noisy main 3.3V domain.

Use Value: −65dB PSRR at 100Hz/1kHz attenuates switching noise from nearby DC/DC converters, reducing USB packet error rates.

Use Scenario: Delivers regulated 2.6V to ARM Cortex-M4 MCU cores and CAN transceiver bias rails in factory-floor HMIs.

IC Role / Device Role / Timing Role: Industrial-grade LDO operating continuously at −40°C to +85°C ambient with thermal shutdown protection.

Use Value: 47°C/W θ_JC and +160°C thermal shutdown ensure reliability in sealed enclosures; RoHS/Green compliance meets EU machinery directives.

Equivalent & Alternatives

The following parts are listed as comparable options for similar LDO regulator applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
MCP1703T-2602E/MB	2.6V fixed, 250mA max, 6µA I_Q, SOT23-5 - lower current, lower I_Q, no auto-discharge.	Best for ultra-low-power sensor nodes where 250mA suffices and discharge is handled externally.	Select when minimizing sleep current outweighs need for 600mA drive or integrated discharge.
Torex XC6210B262MR-G	2.6V fixed, 600mA, 15µA I_Q, SOT25 - same current rating but higher PSRR (−70dB), no discharge resistor.	Suitable for noise-sensitive RF modules where PSRR > −65dB is mandatory and discharge is optional.	Choose when superior ripple rejection is prioritized over shutdown-state VOUT bleed capability.

Compared with MCP1703T-2602E/MB and XC6210B262MR-G, the AP2112R5A-2.6TRG1 uniquely balances 600mA drive, 55µA operating current, and integrated 60Ω discharge-making it optimal for portable displays requiring both performance and controlled power-down sequencing.

Availability

AP2112R5A-2.6TRG1 is available at Aetrix Electronics and suitable for LCD monitor power rails, portable DVD player core supplies, and industrial HMI display modules requiring stable component supply, full RoHS/Green compliance, and SOT89-5 thermal performance.

Supply support for AP2112R5A-2.6TRG1 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 power management, signal integrity, and protection solutions for industrial, computing, and consumer markets.

The AP2112 series belongs to Diodes' precision LDO portfolio, engineered specifically for space-constrained, battery-sensitive applications demanding high accuracy, low noise, and robust thermal behavior in compact packages.

FAQ

What is the minimum input voltage required for AP2112R5A-2.6TRG1 to maintain regulation at 600mA?

The device requires VIN ≥ VOUT + VDROP = 2.6V + 0.25V = 2.85V minimum under full-load conditions. At lighter loads (e.g., 10mA), dropout drops to 5–8mV, allowing operation down to 2.605V. Input must remain within the absolute maximum 6.5V rating and recommended 2.5–6.0V range.

Does AP2112R5A-2.6TRG1 require an external pull-up on the EN pin?

No. The EN pin features an internal 3MΩ pull-down resistor, ensuring default shutdown when left floating. A logic-high signal ≥1.5V is required to enable regulation; no external pull-up is needed unless driving EN from an open-drain source or requiring faster rise time in noisy environments.

Can AP2112R5A-2.6TRG1 be used with aluminum electrolytic output capacitors?

Yes. The datasheet explicitly confirms stability with 1.0µF aluminum electrolytic, tantalum, and ceramic (X5R/X7R) capacitors. ESR range compatibility is broad (0.01–3Ω), eliminating need for ESR-tuning networks common in older LDO designs.

How does the auto-discharge function behave during enable transitions?

When EN transitions from high to low, the internal 60Ω discharge path activates within 20µs (typical start-up time), pulling VOUT to GND. When EN returns high, discharge disconnects and regulation resumes after the same 20µs startup delay-no external circuitry is needed for controlled power-down sequencing.

AP2112R5A-2.6TRG1 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:: Fixed

Number of Regulators:: 1

Voltage - Input (Max):: 6V

Voltage - Output (Min/Fixed):: 2.6V

Voltage - Output (Max):: -

Voltage Dropout (Max):: 0.4V @ 600mA

Current - Output:: 600mA

Current - Quiescent (Iq):: 80 µA

Current - Supply (Max):: -

PSRR:: 65sB (100Hz ~ 1KHz)

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

AP2112R5A-2.6TRG1 FAQ

1.How can I place an order for AP2112R5A-2.6TRG1 through Aetrix?

Please submit a Request for Quotation (RFQ) for AP2112R5A-2.6TRG1 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 AP2112R5A-2.6TRG1 reliable?

The price and inventory of AP2112R5A-2.6TRG1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP2112R5A-2.6TRG1 is usually 5 days.

3.What payment methods are accepted for AP2112R5A-2.6TRG1?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP2112R5A-2.6TRG1 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for AP2112R5A-2.6TRG1?

AP2112R5A-2.6TRG1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your AP2112R5A-2.6TRG1 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 AP2112R5A-2.6TRG1?

For technical support, including AP2112R5A-2.6TRG1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP2112R5A-2.6TRG1 requirements.

6.How does Aetrix verify that AP2112R5A-2.6TRG1 is sourced from the original manufacturer or authorized distributors?

All AP2112R5A-2.6TRG1 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 AP2112R5A-2.6TRG1 meets industry standards.

7.What is the process for return or replacement of AP2112R5A-2.6TRG1?

All AP2112R5A-2.6TRG1 units undergo pre-shipment inspection (PSI). If there is an issue with AP2112R5A-2.6TRG1, 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 AP2112R5A-2.6TRG1 part is unused and in its original packaging.

Return procedure for AP2112R5A-2.6TRG1:

1.Submit a request within 90 days.

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

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