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Diodes Incorporated AP2112R5-3.3TRG1
- Part No.:
- AP2112R5-3.3TRG1
- Manufacturer:
- Diodes Incorporated
- Package:
- SOT-89-5/6
- Datasheet:
-
AP2112R5-3.3TRG1.pdf
- Description:
- IC REG LINEAR 3.3V 600MA SOT89-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,587
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Product details
Overview
AP2112R5-3.3TRG1 from Diodes Incorporated is a fixed-output 3.3V, 600mA CMOS low-dropout linear regulator in SOT89-5 (R5) package with enable control, ±1.5% output accuracy, 250mV typical dropout at full load, and integrated 60Ω VOUT discharge resistor for fast shutdown. It delivers stable power to core logic rails in space-constrained portable electronics requiring low quiescent current and fast transient response.
For engineers reviewing the AP2112R5-3.3TRG1 datasheet, AP2112R5-3.3TRG1 pinout, AP2112R5-3.3TRG1 application, or AP2112R5-3.3TRG1 equivalent, key selection criteria include dropout voltage at 600mA, ±1.5% output tolerance over -40°C to +85°C, EN logic thresholds (VIH ≥ 1.5V, VIL ≤ 0.4V), thermal shutdown at +160°C, and compatibility with 1.0µF ceramic input/output capacitors.
Technical Context
The AP2112R5-3.3TRG1 uses a CMOS pass transistor architecture with internal voltage reference and error amplifier to regulate output against line and load variations. Its feedback loop achieves <20µs startup time and maintains ±1.5% output accuracy across temperature and load.
It integrates foldback short-circuit protection (50mA limit), thermal shutdown (+160°C trip with +25°C hysteresis), and an auto-discharge function that connects VOUT to GND via 60Ω when EN is low-enabling rapid output decay in battery-powered systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.3V ±1.5% (3.251V–3.350V), ensuring reliable operation of 3.3V I/O and logic circuits. |
| Max Output Current | 600mA minimum continuous, supporting mid-power microcontrollers and interface ICs. |
| Dropout Voltage | 250mV typical at 600mA (VIN ≥ 3.55V), enabling regulation from 3.6V sources with margin. |
| Quiescent Current | 55µA typical, minimizing standby power loss in always-on subsystems. |
| PSRR | -65dB at 100Hz/1kHz, suppressing ripple from noisy DC-DC pre-regulators. |
| Output Noise | 50µVRMS (10Hz–100kHz), suitable for noise-sensitive analog circuitry. |
| Enable Thresholds | VIH ≥ 1.5V (ON), VIL ≤ 0.4V (OFF), compatible with 1.8V/3.3V GPIO control. |
| Operating Temp | -40°C to +85°C ambient, validated for industrial and consumer portable equipment. |
Pinout & Package
SOT89-5 (R5) package: 5-pin surface-mount outline with exposed thermal pad (pin 4 = GND), optimized for thermal dissipation in high-current LDO applications.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VOUT | Regulated 3.3V output; requires 1.0µF ceramic capacitor to GND for stability. |
| 2 | VIN | Input supply (2.5V–6.0V); must be ≥ VOUT + dropout for regulation. |
| 3 | NC | No connection; electrically isolated-no PCB trace or component required. |
| 4 | GND | Power ground; connected to thermal pad for optimal heat transfer. |
| 5 | EN | Active-high enable; drives VOUT ON/OFF; internal 3.0MΩ pull-down ensures default OFF state. |
Key Features
| Feature | Design Value |
|---|---|
| Auto VOUT Discharge | 60Ω internal resistor to GND when EN = LOW, reducing output decay time to <1ms for safe sequencing. |
| Low Dropout Performance | 250mV @ 600mA enables use with 3.6V Li-ion or 5V buck outputs without headroom penalty. |
| Capacitor Flexibility | Stable with 1.0µF ceramic, tantalum, or aluminum electrolytic-reducing BOM count and board area. |
| Foldback Short Protection | 50mA current limit during output short prevents thermal runaway and enables self-recovery. |
| High PSRR & Low Noise | -65dB PSRR + 50µVRMS noise supports clean power for ADCs, RF front-ends, and PLLs. |
Applications
| Portable DVD Power Rail | LCD Monitor Core Logic |
|---|---|
Use Scenario: Supplies 3.3V to DVD player main SoC, audio DAC, and servo controller during battery operation. IC Role / Device Role / Timing Role: Primary post-regulator delivering stable 3.3V from 5V DC-DC converter; enables fast EN-controlled power cycling between playback and standby. Use Value: 55µA quiescent current extends battery life; 60Ω discharge ensures safe reset before re-enabling. |
Use Scenario: Powers FPGA configuration I/O banks and timing controller in 1080p LCD panels. IC Role / Device Role / Timing Role: Low-noise 3.3V source for digital logic; PSRR >65dB suppresses switching noise from backlight inverters. Use Value: ±1.5% output accuracy guarantees signal integrity across temperature; 1.0µF ceramic compatibility simplifies layout. |
| Laptop Subsystem Regulator | USB Peripheral Hub Supply |
Use Scenario: Provides 3.3V to embedded controller (EC), keyboard matrix, and touchpad ASIC. IC Role / Device Role / Timing Role: Always-on LDO with EN controlled by EC firmware; thermal shutdown protects during enclosure overheating. Use Value: -40°C to +85°C rating ensures reliability in clamshell thermal zones; 20µs startup meets USB suspend/resume timing. |
Use Scenario: Supplies 3.3V to USB 2.0 hub controller and port power switches in docking stations. IC Role / Device Role / Timing Role: Load-transient-optimized regulator handling hot-plug current surges up to 600mA. Use Value: 0.2%/A load regulation minimizes voltage droop during port enumeration; foldback protection avoids latch-up on shorted downstream ports. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1700T-3302E/MB | 300mA max output, 170mV dropout @ 250mA, no VOUT discharge, SOIC-8 only | Limited to lower-current peripherals; lacks fast shutdown capability | Select when cost sensitivity outweighs current demand and discharge requirement |
| Torex XC6206P332MR-G | 500mA max output, 200mV dropout @ 300mA, 1.0µF ceramic stable, SOT23-5 | Lower current capacity; smaller footprint but higher thermal resistance (184°C/W) | Prefer for ultra-compact designs where 500mA suffices and thermal margin allows |
Compared with MCP1700T-3302E/MB and XC6206P332MR-G, the AP2112R5-3.3TRG1 uniquely combines 600mA drive, integrated 60Ω discharge, and SOT89-5 thermal performance-making it optimal for portable systems requiring robust sequencing and thermal resilience.
Availability
AP2112R5-3.3TRG1 is available at Aetrix Electronics and suitable for portable DVD players, LCD monitor logic rails, laptop embedded controllers, and USB peripheral hubs requiring stable component supply, consistent parametric performance, and long-term lifecycle support.
Supply support for AP2112R5-3.3TRG1 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 company specializing in discrete, analog, and mixed-signal devices, with emphasis on power management, signal integrity, and protection solutions.
The AP2112 product line delivers high-accuracy, low-quiescent-current LDOs for portable and industrial applications where compact size, thermal efficiency, and fast transient response are critical.
FAQ
What is the minimum input voltage required for AP2112R5-3.3TRG1 to maintain regulation at 600mA?
The minimum input voltage is 3.55V, calculated as VOUT (3.3V) plus typical dropout (250mV). The datasheet specifies VIN ≥ 4.3V for full 600mA testing, but regulation is maintained down to 3.55V per electrical characteristics-provided thermal limits are observed in the SOT89-5 package.
Does AP2112R5-3.3TRG1 require external components for stability?
No external compensation is needed. The device is stable with a single 1.0µF ceramic capacitor on both input and output, as verified across X5R/X7R dielectrics. Larger values improve ripple rejection but are not required for basic stability per the datasheet's recommended operating conditions.
How does the auto-discharge function behave during enable transitions?
When EN transitions from HIGH to LOW, the internal 60Ω resistor connects VOUT to GND within 1µs, discharging a 1.0µF output cap to <100mV in under 1ms. When EN returns HIGH, the regulator starts up in <20µs with no shoot-through or overshoot, as confirmed by oscilloscope waveforms in the datasheet.
Is AP2112R5-3.3TRG1 compliant with RoHS and halogen-free standards?
Yes. AP2112R5-3.3TRG1 is fully RoHS 2 (2011/65/EU) compliant, lead-free, and halogen- and antimony-free ("Green" per Diodes Inc. definition: Br+Cl <1500ppm, Sb <1000ppm), with documentation available in the manufacturer's quality portal.
AP2112R5-3.3TRG1 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):
- 3.3V
- 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
AP2112R5-3.3TRG1 FAQ
1.How can I place an order for AP2112R5-3.3TRG1 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP2112R5-3.3TRG1 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 AP2112R5-3.3TRG1 reliable?
The price and inventory of AP2112R5-3.3TRG1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP2112R5-3.3TRG1 is usually 5 days.
3.What payment methods are accepted for AP2112R5-3.3TRG1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP2112R5-3.3TRG1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP2112R5-3.3TRG1?
AP2112R5-3.3TRG1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP2112R5-3.3TRG1 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 AP2112R5-3.3TRG1?
For technical support, including AP2112R5-3.3TRG1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP2112R5-3.3TRG1 requirements.
6.How does Aetrix verify that AP2112R5-3.3TRG1 is sourced from the original manufacturer or authorized distributors?
All AP2112R5-3.3TRG1 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 AP2112R5-3.3TRG1 meets industry standards.
7.What is the process for return or replacement of AP2112R5-3.3TRG1?
All AP2112R5-3.3TRG1 units undergo pre-shipment inspection (PSI). If there is an issue with AP2112R5-3.3TRG1, 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 AP2112R5-3.3TRG1 part is unused and in its original packaging.
Return procedure for AP2112R5-3.3TRG1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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