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Diodes Incorporated AP2111MP-3.3TRG1
- Part No.:
- AP2111MP-3.3TRG1
- Manufacturer:
- Diodes Incorporated
- Package:
- 8-SOIC (0.154", 3.90mm Width) Exposed Pad
- Datasheet:
-
AP2111MP-3.3TRG1.pdf
- Description:
- IC REG LINEAR 3.3V 600MA 8PSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,915
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Product details
Overview
AP2111MP-3.3TRG1 from BCD Semiconductor is a fixed 3.3V, 600mA CMOS low-dropout linear regulator with enable control and auto-discharge function, designed for power rail regulation in space-constrained portable electronics. It delivers ±1.5% output accuracy, 250mV typical dropout at 600mA, 50μVRMS output noise, and operates across –40°C to +85°C ambient temperature.
For engineers reviewing the AP2111MP-3.3TRG1 datasheet, AP2111MP-3.3TRG1 pinout, AP2111MP-3.3TRG1 application, or AP2111MP-3.3TRG1 equivalent, this page provides verified electrical parameters, PSOP-8 package layout, thermal shutdown behavior, load transient response data, and validated alternative LDOs for system-level power design.
Technical Context
The AP2111MP-3.3TRG1 implements a CMOS-based error amplifier and pass transistor architecture with internal voltage reference (0.8V), UVLO, foldback current limiting (50mA short-circuit protection), and thermal shutdown (160°C). Its fast loop response enables stable regulation under dynamic load steps up to 600mA.
It supports external capacitor stabilization with 1.0μF ceramic, tantalum, or aluminum electrolytic output capacitors and features an integrated VOUT discharge path (60Ω) activated when EN is low. The enable logic threshold is VIH ≥1.5V and VIL ≤0.4V, compatible with standard CMOS I/O.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.3V ±1.5% - ensures stable MCU core or interface rail within tight tolerance across temperature and load. |
| Max Output Current | 600mA minimum - sufficient for powering SoC subsystems, USB peripherals, or display logic without derating. |
| Dropout Voltage | 250mV typical @ 600mA - enables operation from 3.55V input, supporting single-cell Li-ion or 5V rail post-dropper. |
| PSRR | 65dB @ 100Hz/1kHz - suppresses switching noise from upstream DC/DC converters feeding the LDO input. |
| Quiescent Current | 55μA typical - minimizes standby power loss in battery-backed systems like portable DVD players. |
| Output Noise | 50μVRMS (10Hz–100kHz) - suitable for noise-sensitive analog circuitry including ADC references and audio codecs. |
| Enable Threshold | VIH ≥1.5V, VIL ≤0.4V - directly interfaces with 1.8V/3.3V GPIO without level-shifting. |
Pinout & Package
AP2111MP-3.3TRG1 is packaged in PSOP-8 (Power Small Outline Package, 8-pin), a thermally enhanced surface-mount variant of SOIC-8 with exposed thermal pad on underside for improved heat dissipation (θJC = 43.7°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 3, 5, 6, 7 | GND | Ground return for internal circuitry, pass device, and feedback network; all pins tied internally. |
| 2 | VOUT | Regulated 3.3V output; connects to load and output capacitor (min. 1.0μF ceramic). |
| 4 | VIN | Input supply (2.5V–6.0V); requires local 1.0μF ceramic decoupling capacitor. |
| 8 | EN | Active-high enable; drives regulator into low-quiescent (0.01μA) shutdown when pulled low. |
Key Features
| Feature | Design Value |
|---|---|
| Auto-discharge function | 60Ω internal discharge path from VOUT to GND when EN = low - prevents residual voltage hold-up during power sequencing. |
| Foldback short-circuit protection | 50mA current limit during VOUT short - limits power dissipation and avoids thermal runaway under fault conditions. |
| Stable with 1.0μF output cap | Compatible with ceramic, tantalum, and aluminum electrolytic - eliminates need for costly low-ESR specialty capacitors. |
| Low standby current | 0.01μA typical - extends battery life in always-on monitoring circuits and sleep-mode embedded systems. |
| Thermal shutdown with hysteresis | 160°C trip point, 30°C hysteresis - prevents oscillation during thermal overload and allows safe recovery. |
Applications
| Laptop Power Management | Portable DVD Player |
|---|---|
|
Use Scenario: Regulating 3.3V supply for USB controller, SD card interface, and touchpad logic in clamshell-form factor laptops. IC Role / Device Role / Timing Role: Primary post-regulator delivering clean, low-noise 3.3V rail downstream of main buck converter. Use Value: 250mV dropout enables use of higher-efficiency 3.55V intermediate rail; 50μVRMS noise avoids USB packet errors and SD timing jitter. |
Use Scenario: Providing stable 3.3V bias to laser diode driver IC, video DAC, and microcontroller in battery-powered DVD units. IC Role / Device Role / Timing Role: Low-quiescent LDO maintaining system readiness during pause mode while enabling fast wake-up via EN pin. Use Value: 0.01μA standby current extends playback time between charges; ±1.5% accuracy ensures consistent DAC reference and motor control voltage. |
| LCD Monitor Logic Rail | Industrial HMI Panel |
|
Use Scenario: Generating 3.3V for LVDS transmitter, timing controller, and EEPROM in 15–24″ LCD monitors. IC Role / Device Role / Timing Role: Secondary LDO isolating digital logic from noisy DC/DC converter supplying backlight inverters. Use Value: 65dB PSRR at 1kHz attenuates 100kHz–1MHz switching artifacts from boost converters, preventing image flicker and color banding. |
Use Scenario: Powering ARM Cortex-M4 microcontroller, CAN transceiver, and isolated I/O drivers in factory-floor HMIs. IC Role / Device Role / Timing Role: Robust, thermally protected LDO operating continuously in 70°C ambient cabinet environments. Use Value: 160°C thermal shutdown with 30°C hysteresis prevents latch-up during extended high-load operation; SOIC-8/PSOP-8 package supports reflow-compatible assembly. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fixed-output LDO applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1700T-3302E/MB | 300mA max output, 175mV dropout @ 250mA, no EN pin, SOT-23-3 package | Limited to lower-current peripherals; lacks enable control and auto-discharge | Select only if system load <300mA and sequencing simplicity outweighs feature loss. |
| Torex XC6206P332MR-G | 500mA max output, 200mV dropout @ 300mA, 30μA IQ, SOT-25 package | Lower noise (30μVRMS), but no thermal shutdown or foldback protection | Prefer for ultra-low-noise analog rails where fault protection is handled externally. |
Compared with MCP1700T-3302E/MB and XC6206P332MR-G, AP2111MP-3.3TRG1 uniquely combines 600mA drive, integrated EN/discharge, thermal shutdown, and foldback protection in PSOP-8 - making it optimal for mid-power portable systems requiring robustness and sequencing control.
Availability
AP2111MP-3.3TRG1 is available at Aetrix Electronics and suitable for laptop computer power management, portable DVD player subsystems, LCD monitor logic rails, and industrial HMI panels requiring stable component supply with full RoHS/Green compliance (G1 suffix).
Supply support for AP2111MP-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
BCD Semiconductor Manufacturing Limited is a China-based fabless analog IC designer specializing in power management, LED drivers, and mixed-signal solutions for consumer and industrial markets.
The AP2111 series targets cost-sensitive, space-constrained portable electronics needing high-accuracy, low-noise, and thermally robust LDO regulation - with emphasis on compatibility with standard PCB assembly processes and broad capacitor selection.
FAQ
What is the minimum input voltage required for AP2111MP-3.3TRG1 to maintain regulation at full 600mA load?
The datasheet specifies a maximum dropout voltage of 400mV at 600mA (typical 250mV). With a nominal 3.3V output, VIN must be ≥3.7V to guarantee regulation under worst-case conditions. Recommended minimum is 3.7V; absolute minimum per Absolute Maximum Ratings is 2.5V, but regulation cannot be maintained below dropout threshold.
Can AP2111MP-3.3TRG1 be used with aluminum electrolytic output capacitors?
Yes - the datasheet explicitly states stability with 1.0μF aluminum electrolytic, ceramic, and tantalum capacitors. ESR range is not constrained, eliminating need for low-ESR variants. This simplifies BOM and improves reliability in high-temperature environments where ceramics may de-rate.
Does the EN pin require an external pull-up resistor for reliable startup?
No - the EN pin has an internal 3.0MΩ pull-down resistor (RPD = 3.0MΩ), ensuring default shutdown on power-up. An external pull-up is optional only if active-high assertion must occur before VIN ramp; otherwise, driving EN high from a controlled GPIO suffices.
How does the auto-discharge function behave during EN pin assertion?
When EN transitions from high to low, the internal 60Ω discharge path activates between VOUT and GND, discharging the output capacitor within milliseconds (τ ≈ 60Ω × COUT). Discharge ceases immediately upon EN returning high; no delay or latch is involved - behavior is purely level-triggered and instantaneous.
AP2111MP-3.3TRG1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width) Exposed Pad
- 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:
- 65dB (100Hz ~ 1kHz)
- Control Features:
- Enable
- Protection Features:
- Over Current, Over Temperature, Under Voltage Lockout (UVLO)
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-PSOP
AP2111MP-3.3TRG1 FAQ
1.How can I place an order for AP2111MP-3.3TRG1 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP2111MP-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 AP2111MP-3.3TRG1 reliable?
The price and inventory of AP2111MP-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 AP2111MP-3.3TRG1 is usually 5 days.
3.What payment methods are accepted for AP2111MP-3.3TRG1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP2111MP-3.3TRG1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP2111MP-3.3TRG1?
AP2111MP-3.3TRG1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP2111MP-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 AP2111MP-3.3TRG1?
For technical support, including AP2111MP-3.3TRG1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP2111MP-3.3TRG1 requirements.
6.How does Aetrix verify that AP2111MP-3.3TRG1 is sourced from the original manufacturer or authorized distributors?
All AP2111MP-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 AP2111MP-3.3TRG1 meets industry standards.
7.What is the process for return or replacement of AP2111MP-3.3TRG1?
All AP2111MP-3.3TRG1 units undergo pre-shipment inspection (PSI). If there is an issue with AP2111MP-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 AP2111MP-3.3TRG1 part is unused and in its original packaging.
Return procedure for AP2111MP-3.3TRG1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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