My Inquiry
My Account
Diodes Incorporated AP2127K-3.0TRG1
- Part No.:
- AP2127K-3.0TRG1
- Manufacturer:
- Diodes Incorporated
- Package:
- SC-74A, SOT-753
- Datasheet:
-
AP2127K-3.0TRG1.pdf
- Description:
- IC REG LINEAR 3V 300MA SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:7,887
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
AP2127K-3.0TRG1 from Diodes Incorporated is a 300mA, 3.0V fixed-output CMOS low-dropout (LDO) regulator in SOT-23-5 package, featuring ±2% output voltage accuracy, 170mV dropout at 300mA, 60μA typical quiescent current, and 68dB PSRR at 1kHz-designed for noise-sensitive power rails in portable computing and datacom systems.
For engineers reviewing the AP2127K-3.0TRG1 datasheet, AP2127K-3.0TRG1 pinout, AP2127K-3.0TRG1 application, or AP2127K-3.0TRG1 equivalent, key selection criteria include dropout performance under 300mA load, RMS noise below 60μVRMS, thermal shutdown at +165°C, and compatibility with 1μF ceramic input/output capacitors.
Technical Context
This LDO employs a PMOS pass transistor architecture enabling ultra-low dropout and fast transient response. Its internal 0.8V reference feeds a precision error amplifier that regulates output via feedback from VOUT (fixed version) or ADJ pin (adjustable versions), with soft-start time fixed at 50μs to limit inrush current.
The device integrates active shutdown control (logic-high enable), over-temperature protection with +30°C hysteresis, and an internal 60Ω discharge MOSFET activated during shutdown-enabling rapid VOUT discharge without external components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.0V ±2% - ensures stable core logic or I/O rail within tight tolerance across -40°C to +85°C. |
| Max Output Current | 300mA continuous - supports moderate-power microcontrollers, sensors, or interface ICs without derating. |
| Dropout Voltage | 170mV @ 300mA - allows operation from 3.17V input, critical for single-cell Li-ion or 3.3V system margin. |
| Quiescent Current | 60μA typical - minimizes battery drain in always-on subsystems like real-time clocks or wake-up circuits. |
| PSRR | 68dB @ 1kHz - suppresses switching noise from upstream DC/DC converters feeding the LDO input. |
| Output Noise | 60μVRMS @ 10Hz–100kHz - meets low-noise requirements for ADC references or RF bias supplies. |
| Shutdown Current | 0.1μA - enables deep-sleep modes in portable devices with near-zero leakage. |
Pinout & Package
SOT-23-5 package with exposed thermal pad (not electrically connected); 1.27mm pitch, JEDEC MO-178 compliant; footprint optimized for thermal dissipation in space-constrained PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN (Pin 2) | Power Input | Accepts 2.5V–6V input; requires 1μF ceramic capacitor to GND for stability and noise filtering. |
| GND (Pin 1) | Ground Reference | Primary return path for load current and internal circuitry; connects to thermal pad for enhanced heat transfer. |
| VOUT (Pin 3) | Regulated Output | Delivers stable 3.0V; capable of sourcing 300mA with <10mV load regulation error. |
| Shutdown (Pin 4) | Enable Control | Active-high logic input; pulls VOUT to GND via 60Ω internal MOSFET when low for fast discharge. |
| NC (Pin 5) | No Connection | Unbonded terminal; must be left floating or tied to GND per layout best practices. |
Key Features
| Feature | Design Value |
|---|---|
| Low-noise regulation | 60μVRMS output noise enables clean analog/RF supply without additional filtering. |
| Ultra-low quiescent current | 60μA IQ supports >1-year battery life in IoT sensor nodes with periodic wake-up. |
| Fast soft-start | 50μs ramp time prevents output overshoot and reduces stress on downstream capacitors. |
| Integrated discharge path | 60Ω RDS(ON) MOSFET discharges 10μF output cap in <600μs, meeting fast-power-cycle timing specs. |
| Ceramic capacitor compatible | Stable with ≥1μF X7R/X5R MLCCs-eliminates need for costly tantalum or electrolytic capacitors. |
Applications
| Notebook Computers | Datacom Equipment |
|---|---|
Use Scenario: Powering USB controller, SMBus interface, or embedded controller in ultrabook platforms. IC Role / Device Role / Timing Role: Primary 3.0V LDO supplying logic-level I/O and communication peripherals. Use Value: 170mV dropout enables direct regulation from 3.3V main rail, preserving headroom for battery-backed operation. | Use Scenario: Biasing 10/100/1000BASE-T PHY transceivers and management controllers in Ethernet switches. IC Role / Device Role / Timing Role: Low-noise 3.0V supply for analog front-end and clock distribution circuitry. Use Value: 68dB PSRR at 1kHz rejects noise from adjacent high-frequency DC/DC converters, reducing bit-error rates. |
| Motherboard VRM Sequencing | Industrial Sensor Nodes |
Use Scenario: Providing auxiliary 3.0V rail for chipset management engine (ME) or platform controller hub (PCH) logic. IC Role / Device Role / Timing Role: Secondary regulated supply synchronized via shutdown pin to match power-up/down sequencing. Use Value: Active-high shutdown enables precise coordination with main CPU VRM, preventing latch-up during reset. | Use Scenario: Powering low-power microcontroller, temperature/humidity sensor, and BLE radio in battery-operated field devices. IC Role / Device Role / Timing Role: Always-on LDO maintaining RTC and wake-up circuitry during deep-sleep states. Use Value: 0.1μA standby current extends CR2032 battery life beyond 3 years in maintenance-free deployments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1700T-3002E/MB | 250mA max output, 175mV dropout @ 250mA, 2.5μA quiescent current - lower IQ but reduced current capability. | Optimized for ultra-low-power sensor nodes where 300mA peak is never required. | Select when standby current dominates design priority and load current stays ≤250mA. |
| Torex XC6206P302MR-G | 300mA output, 200mV dropout @ 300mA, 1.0μA IQ - higher dropout, slightly higher IQ, same package. | Suitable for cost-sensitive consumer electronics with relaxed thermal constraints. | Choose when board space matches SOT-23-5 but thermal margin allows 30mV higher dropout. |
Compared with MCP1700T-3002E/MB and XC6206P302MR-G, the AP2127K-3.0TRG1 delivers superior current drive and lower dropout while maintaining competitive noise and shutdown performance-making it optimal for compact, high-reliability embedded systems requiring full 300mA capability.
Availability
AP2127K-3.0TRG1 is available at Aetrix Electronics and suitable for notebook computers, datacom equipment, motherboard power sequencing, and industrial sensor nodes requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for AP2127K-3.0TRG1 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 high-efficiency power management, signal integrity, and protection solutions for industrial, computing, and communications markets.
The AP2127 series belongs to Diodes' high-speed, low-noise LDO product line-engineered specifically for battery-powered and noise-sensitive applications demanding precision regulation, fast transient response, and minimal quiescent power.
FAQ
What is the minimum input voltage required for stable 3.0V output at 300mA?
The AP2127K-3.0TRG1 requires VIN ≥ 3.17V (3.0V + 170mV dropout) for full 300mA output. Below this, output voltage collapses linearly with decreasing VIN. Operation down to 2.5V input is supported only at reduced load currents, as specified in the Electrical Characteristics table.
Can the AP2127K-3.0TRG1 be used with ceramic capacitors smaller than 1μF?
No-Diodes specifies ≥1μF X7R/X5R ceramic capacitors for both CIN and COUT to ensure stability across temperature and load. Using smaller values risks oscillation or degraded transient response, as confirmed by the Region of Stable COUT ESR vs. Output Current plots in the datasheet.
Does the Shutdown pin require a pull-up resistor?
No external pull-up is required. The Shutdown pin has an internal 3MΩ pull-down resistor, ensuring default-disable behavior when left unconnected. A logic-high signal (>1.5V) actively enables the regulator; no external biasing is needed for standard enable/disable control.
Is the exposed thermal pad on the SOT-23-5 package electrically connected?
No-the exposed pad is not bonded to any internal die node and serves only for thermal conduction. It must be soldered to a PCB copper pour connected to GND for optimal thermal performance, but no electrical connection is required or recommended.
AP2127K-3.0TRG1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- 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):
- 3V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.3V @ 300mA
- Current - Output:
- 300mA
- Current - Quiescent (Iq):
- 90 µA
- Current - Supply (Max):
- -
- PSRR:
- 68dB ~ 54dB (100Hz ~ 10kHz)
- Control Features:
- -
- Protection Features:
- Over Current, Over Temperature
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
AP2127K-3.0TRG1 FAQ
1.How can I place an order for AP2127K-3.0TRG1 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP2127K-3.0TRG1 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 AP2127K-3.0TRG1 reliable?
The price and inventory of AP2127K-3.0TRG1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP2127K-3.0TRG1 is usually 5 days.
3.What payment methods are accepted for AP2127K-3.0TRG1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP2127K-3.0TRG1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP2127K-3.0TRG1?
AP2127K-3.0TRG1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP2127K-3.0TRG1 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 AP2127K-3.0TRG1?
For technical support, including AP2127K-3.0TRG1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP2127K-3.0TRG1 requirements.
6.How does Aetrix verify that AP2127K-3.0TRG1 is sourced from the original manufacturer or authorized distributors?
All AP2127K-3.0TRG1 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 AP2127K-3.0TRG1 meets industry standards.
7.What is the process for return or replacement of AP2127K-3.0TRG1?
All AP2127K-3.0TRG1 units undergo pre-shipment inspection (PSI). If there is an issue with AP2127K-3.0TRG1, 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 AP2127K-3.0TRG1 part is unused and in its original packaging.
Return procedure for AP2127K-3.0TRG1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AP2127K-3.0TRG1 Tags
-
MIC5504-1.8YM5-TR
Microchip Technology
-
MIC5504-3.3YM5-TR
Microchip Technology
-
MIC5365-3.0YC5-TR
Microchip Technology
-
MIC5365-1.8YC5-TR
Microchip Technology
-
MIC5365-2.5YC5-TR
Microchip Technology
-
MIC5365-3.3YC5-TR
Microchip Technology
-
MIC5365-3.3YD5-TR
Microchip Technology
-
MIC5317-3.3YM5-TR
Microchip Technology
-
TLV1117LV33DCYR
Texas Instruments
-
MIC5317-3.3YMT-TZ
Microchip Technology
-
MIC5528-3.3YMT-TR
Microchip Technology
-
TLV75801PDRVR
Texas Instruments
Tech Hub
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
LDO regulator guide covering low dropout voltage, power dissipation, thermal design, PSRR, output noise, capacitor stability, adjustable LDO circuits, LDO vs buck converter and datasheet selection chec…
Conditional Access Module guide covering CAM meaning, CI/CI+ interface, smart card authorization, DVB security workflow, TV and set-top box compatibility, internal electronics, ESD protection, connecto…
Guide to electronic component obsolescence covering EOL risk, PCN/PDN notices, last-time buy planning, replacement options, form-fit-function validation, counterfeit risk and BOM lifecycle management.
18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…
Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…
