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Diodes Incorporated AP2111MP-1.8TRG1
- Part No.:
- AP2111MP-1.8TRG1
- Manufacturer:
- Diodes Incorporated
- Package:
- 8-SOIC (0.154", 3.90mm Width) Exposed Pad
- Datasheet:
-
AP2111MP-1.8TRG1.pdf
- Description:
- IC REG LINEAR 1.8V 600MA 8SO
- Quantity:
- Payment:
- Shipping:
Inventory:2,797
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Product details
Overview
AP2111MP-1.8TRG1 from BCD Semiconductor Manufacturing Limited is a fixed-output 1.8V, 600mA CMOS low-dropout linear regulator with enable control and auto-discharge functionality. It delivers ±1.5% output accuracy, 250mV typical dropout at 600mA (for 3.3V version), and 50μVRMS output noise, operating across -40°C to +85°C in PSOP-8 package. It serves as a primary voltage rail for core logic in portable computing and display subsystems.
For engineers reviewing the AP2111MP-1.8TRG1 datasheet, AP2111MP-1.8TRG1 pinout, AP2111MP-1.8TRG1 application, or AP2111MP-1.8TRG1 equivalent, key selection criteria include guaranteed 600mA load capability, 55μA quiescent current, 0.02%/V line regulation, thermal shutdown at 160°C, and compatibility with 1.0μF ceramic, tantalum, or aluminum electrolytic output capacitors.
Technical Context
The AP2111MP-1.8TRG1 implements a CMOS-based LDO architecture with internal voltage reference, error amplifier, pass transistor, and UVLO/shutdown logic. Its fast loop response enables excellent load transient performance, while built-in foldback current limiting (50mA short-circuit limit) and thermal shutdown (160°C with 30°C hysteresis) ensure robust fault protection.
It features an active-high enable input (VIH ≥1.5V, VIL ≤0.4V), integrated EN pull-down resistor (3.0MΩ), and VOUT discharge path (60Ω) when disabled. The device maintains stability with 1.0μF output capacitance across capacitor dielectric types and supports input voltages from 2.8V to 6.0V for 1.8V output operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.8V ±1.5% - ensures stable core supply for 1.8V I/O or logic domains without external feedback. |
| Max Output Current | 600mA minimum - supports sustained power delivery to microcontrollers, FPGAs, or display drivers. |
| Dropout Voltage | 500–700mV @ 600mA (typ) - enables operation from 2.8V input, critical for single-cell Li-ion or multi-cell alkaline systems. |
| Quiescent Current | 55μA typical - minimizes standby power loss in battery-powered devices during sleep modes. |
| PSRR | 65dB @ 100Hz/1kHz - suppresses ripple from noisy DC-DC pre-regulators feeding the LDO input. |
| Output Noise | 50μVRMS (10Hz–100kHz) - preserves signal integrity in analog front-ends and RF bias rails. |
| Enable Threshold | VIH ≥1.5V, VIL ≤0.4V - compatible with 1.8V/3.3V GPIO without level-shifting. |
Pinout & Package
AP2111MP-1.8TRG1 is packaged in PSOP-8 (Power Small Outline Package, 8-pin), a thermally enhanced surface-mount variant of SOIC-8 with exposed pad for improved heat dissipation (θJC = 43.7°C/W). Pin numbering follows standard top-view orientation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | GND | Power ground reference; connects to PCB ground plane and thermal pad for thermal management. |
| 2 | VOUT | Regulated 1.8V output; requires 1.0μF ceramic capacitor to ground for stability and transient response. |
| 3 | GND | Second ground terminal; reduces ground impedance and improves PSRR under dynamic load. |
| 4 | VIN | Input supply (2.8V–6.0V); must be filtered before connection to prevent noise coupling into regulation loop. |
| 5 | GND | Third ground terminal; provides dedicated return path for enable circuitry and internal bias networks. |
| 6 | GND | Fourth ground terminal; enhances thermal conduction and reduces high-frequency ground bounce. |
| 7 | GND | Fifth ground terminal; completes low-inductance ground network for all internal blocks. |
| 8 | EN | Active-high enable; pulls down internally at 3.0MΩ; drives VOUT to 0V via 60Ω discharge path when low. |
Key Features
| Feature | Design Value |
|---|---|
| Auto-discharge on disable | 60Ω internal VOUT-to-GND discharge path ensures rapid output decay (<1ms for 10μF load), preventing back-powering of upstream circuits. |
| Capacitor flexibility | Stable with 1.0μF ceramic, tantalum, or aluminum electrolytic output caps - eliminates need for specialized low-ESR components. |
| Foldback current limit | 50mA short-circuit current - limits power dissipation during fault, enabling safe operation without external current-sense circuitry. |
| Low-noise regulation | 50μVRMS output noise - suitable for powering ADC references, PLL VCOs, and RF transceiver bias rails. |
| Thermal protection | 160°C shutdown with 30°C hysteresis - prevents permanent damage during sustained overload or poor heatsinking. |
Applications
| Laptop Core Logic Supply | Portable DVD Player SoC Rail |
|---|---|
Use Scenario: Powers 1.8V I/O banks and memory interfaces in Intel Atom or ARM-based laptop mainboards. IC Role / Device Role / Timing Role: Primary post-regulator delivering clean, low-noise 1.8V from a 3.3V or 5V intermediate bus. Use Value: 0.02%/V line regulation maintains voltage accuracy despite battery voltage sag; 600mA capacity supports burst-mode CPU activity. |
Use Scenario: Supplies 1.8V core voltage to MPEG decoder ASIC and NAND flash controller in portable DVD players. IC Role / Device Role / Timing Role: Low-quiescent-current LDO enabling >10-hour battery life in standby mode. Use Value: 55μA IQ and 0.01μA standby current minimize self-discharge; auto-discharge prevents latch-up during hot-swap media insertion. |
| LCD Monitor Timing Controller | Industrial HMI Display Module |
Use Scenario: Provides regulated 1.8V to TCON (timing controller) ICs in 10–24-inch LCD monitors. IC Role / Device Role / Timing Role: Precision voltage source for digital logic and interface circuitry requiring tight tolerance and low noise. Use Value: ±1.5% output accuracy ensures consistent gamma correction and pixel clock stability; 65dB PSRR rejects switching noise from backlight inverters. |
Use Scenario: Powers FPGA configuration logic and touch controller in ruggedized human-machine interface panels. IC Role / Device Role / Timing Role: Industrial-grade LDO supporting extended temperature range (-40°C to +85°C) and ESD-hardened operation (HBM 4000V). Use Value: 4000V HBM ESD rating protects against field handling damage; thermal shutdown prevents failure in enclosed, fanless enclosures. |
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 |
|---|---|---|---|
| MCP1700T-1802E/TT | 300mA max output, 6μA IQ, SOT-23-3 package - lower current, ultra-low IQ, no enable or discharge. | Suitable only for ultra-low-power sensor nodes; insufficient for 600mA loads like TCONs or SoCs. | Select only if system load <300mA and standby current <10μA is mandatory; not drop-in compatible. |
| Torex XC6206P182MR-G | 500mA max output, ±2% accuracy, no enable pin, SOT-23-5 - lacks EN control and auto-discharge. | Requires external MOSFET for enable/discharge; less suitable for hot-plug or sequenced power systems. | Choose when board space is constrained and enable functionality is implemented externally; verify thermal margin at full load. |
Compared with MCP1700T-1802E/TT and XC6206P182MR-G, AP2111MP-1.8TRG1 uniquely combines 600mA drive, ±1.5% accuracy, integrated enable, and auto-discharge in PSOP-8 - making it optimal for portable display and compute applications requiring robust, sequenced, and high-current 1.8V regulation.
Availability
AP2111MP-1.8TRG1 is available at Aetrix Electronics and suitable for laptop computer power rails, portable DVD player SoC supplies, and LCD monitor timing controller modules requiring stable component supply, RoHS-compliant green packaging (G1 suffix), and tape-and-reel delivery for automated assembly.
Supply support for AP2111MP-1.8TRG1 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 protection devices, with ISO 9001-certified quality systems and global distribution.
The AP2111 product line targets cost-sensitive, high-volume portable electronics requiring high-current, low-noise, enable-capable LDOs with flexible capacitor compatibility and industrial temperature support.
FAQ
What is the minimum input voltage required for AP2111MP-1.8TRG1 to regulate 1.8V at 600mA?
The datasheet specifies VIN ≥2.8V for 1.8V operation. At 600mA load, the typical dropout is 500–700mV, so 2.8V input ensures regulation margin. Operation below 2.8V risks dropout and unregulated output, especially at elevated temperatures or with aging capacitors.
Does AP2111MP-1.8TRG1 require an external resistor divider for output voltage setting?
No. AP2111MP-1.8TRG1 is a fixed-output variant; the "1.8" in the part number denotes factory-trimmed 1.8V regulation. Unlike the ADJ version (AP2111K-ADJ), it has no ADJ pin and does not use external resistors - simplifying layout and reducing BOM count.
Can AP2111MP-1.8TRG1 be used with aluminum electrolytic output capacitors?
Yes. The datasheet explicitly states stability with 1.0μF aluminum electrolytic, ceramic, or tantalum capacitors. This eliminates ESR constraints common in older LDOs and allows cost-effective, high-reliability bulk capacitance for hold-up time in portable systems.
How does the auto-discharge function operate during shutdown?
When EN is driven low, the internal 60Ω switch connects VOUT to GND, discharging output capacitance rapidly. For a 10μF capacitor, discharge time to 10% of nominal voltage is under 230μs (τ = R×C = 60Ω × 10μF), preventing back-powering of upstream circuitry or latch-up in hot-swap scenarios.
AP2111MP-1.8TRG1 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):
- 1.8V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.7V @ 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-SO-EP
AP2111MP-1.8TRG1 FAQ
1.How can I place an order for AP2111MP-1.8TRG1 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP2111MP-1.8TRG1 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-1.8TRG1 reliable?
The price and inventory of AP2111MP-1.8TRG1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP2111MP-1.8TRG1 is usually 5 days.
3.What payment methods are accepted for AP2111MP-1.8TRG1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP2111MP-1.8TRG1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP2111MP-1.8TRG1?
AP2111MP-1.8TRG1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP2111MP-1.8TRG1 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-1.8TRG1?
For technical support, including AP2111MP-1.8TRG1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP2111MP-1.8TRG1 requirements.
6.How does Aetrix verify that AP2111MP-1.8TRG1 is sourced from the original manufacturer or authorized distributors?
All AP2111MP-1.8TRG1 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-1.8TRG1 meets industry standards.
7.What is the process for return or replacement of AP2111MP-1.8TRG1?
All AP2111MP-1.8TRG1 units undergo pre-shipment inspection (PSI). If there is an issue with AP2111MP-1.8TRG1, 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-1.8TRG1 part is unused and in its original packaging.
Return procedure for AP2111MP-1.8TRG1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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