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Diodes Incorporated AP2125KC-3.0TRE1
- Part No.:
- AP2125KC-3.0TRE1
- Manufacturer:
- Diodes Incorporated
- Package:
- SC-82
- Datasheet:
-
AP2125KC-3.0TRE1.pdf
- Description:
- IC REG LINEAR 3V 300MA SC82
- Quantity:
- Payment:
- Shipping:
Inventory:3,907
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Product details
Overview
AP2125KC-3.0TRE1 from Diodes Incorporated is a 300mA, fixed-output 3.0V CMOS low-dropout (LDO) voltage regulator in SC-70-5 package, featuring 65mV dropout at 100mA, ±2% output voltage accuracy, 50µVrms output noise, and active-high enable control. It delivers stable power to noise-sensitive analog circuitry in compact battery-powered systems.
For engineers reviewing the AP2125KC-3.0TRE1 datasheet, AP2125KC-3.0TRE1 pinout, AP2125KC-3.0TRE1 application, or AP2125KC-3.0TRE1 equivalent, key selection criteria include ultra-low noise performance, SC-70-5 footprint compatibility, enable-controlled shutdown with 0.01µA standby current, and ceramic capacitor support without ESR requirements.
Technical Context
The AP2125KC-3.0TRE1 integrates a precision voltage reference, error amplifier, resistor network for fixed 3.0V output, over-temperature shutdown (160°C trip), and current-limit protection (50mA short-circuit). Its CMOS architecture enables low quiescent current (60µA typical) and high PSRR (65dB at 1kHz).
It operates across -40°C to +85°C ambient, accepts input voltages from 3.5V to 6V (VIN ≥ VOUT + 0.5V), and maintains load regulation within ±15mV over 1–300mA output current. The enable pin (CE) requires ≥1.5V for activation and ≤0.4V for shutdown.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 3.0V ±2% - Ensures stable rail for 3.0V logic and analog ICs without external feedback. |
| Max Output Current | 300mA min - Supports moderate-power subsystems like RF front-ends or sensor signal chains. |
| Dropout Voltage | 65mV @ 100mA - Enables operation with minimal headroom (e.g., 3.0V out from 3.1V Li-ion cell). |
| RMS Output Noise | 50µVrms (10Hz–100kHz) - Critical for powering ADC references, PLLs, or audio codecs without added filtering. |
| PSRR | 65dB @ 1kHz - Suppresses switching noise from upstream DC/DC converters feeding the LDO input. |
| Quiescent Current | 60µA typical - Minimizes battery drain during active operation in portable devices. |
| Standby Current | 0.01µA typical - Enables multi-year shelf life in always-off, wake-on-event applications. |
Pinout & Package
AP2125KC-3.0TRE1 uses the SC-70-5 surface-mount package (1.6mm × 1.6mm × 0.9mm), optimized for space-constrained PCB layouts. Pin assignments are validated per Diodes DS38144 Rev. 2–2.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VIN | Main input supply connection; must be decoupled with ≥1µF ceramic capacitor. |
| 2 | GND | Power ground reference; requires low-impedance PCB plane connection. |
| 3 | CE | Active-high enable input; drives internal regulator core ON/OFF with TTL-compatible thresholds. |
| 4 | NC | No internal connection; left unconnected or tied to GND per layout best practice. |
| 5 | VOUT | Regulated 3.0V output; requires ≥1µF ceramic output capacitor for stability. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low noise regulation | 50µVrms output noise enables direct powering of precision analog circuits without post-LDO filtering. |
| CMOS-based low IQ | 60µA quiescent current reduces static power loss in always-on subsystems such as real-time clocks or sensor hubs. |
| Enable-controlled shutdown | 0.01µA standby current allows complete system-level power gating via microcontroller GPIO. |
| Ceramic capacitor compatible | Stable with 1µF low-ESR X5R/X7R ceramics on both input and output-eliminates need for costly tantalum or aluminum electrolytics. |
| Thermal protection | 160°C junction shutdown with 25°C hysteresis prevents permanent damage during sustained overload or poor heatsinking. |
Applications
| Wireless Transceiver Power | Portable Medical Sensor |
|---|---|
Use Scenario: Powers RF transceiver ICs (e.g., Bluetooth LE SoCs) in wearable trackers where RF sensitivity depends on clean 3.0V supply. IC Role / Device Role / Timing Role: Provides low-noise, enable-gated 3.0V bias for RF synthesizer and baseband analog sections. Use Value: 50µVrms noise and 65dB PSRR prevent AM/PM modulation of transmitted signals by digital switching noise. | Use Scenario: Supplies analog front-end (AFE) of handheld ECG or pulse oximeter requiring stable 3.0V reference for 16-bit ADC conversion. IC Role / Device Role / Timing Role: Delivers precision-regulated 3.0V rail with ±2% accuracy and minimal thermal drift (±100ppm/°C). Use Value: Low dropout (65mV) allows operation down to 3.1V battery voltage, extending usable runtime before low-battery cutoff. |
| Industrial IoT Edge Node | Smart Card Reader Module |
Use Scenario: Powers microcontroller and LoRaWAN modem in battery-operated environmental sensor node deployed for >5 years. IC Role / Device Role / Timing Role: Serves as primary 3.0V system rail with enable control synchronized to sensor sampling intervals. Use Value: 0.01µA shutdown current minimizes self-discharge during 99.9% sleep duty cycle, enabling multi-year battery life. | Use Scenario: Supplies secure element and contactless interface IC in portable smart card reader used in field access control. IC Role / Device Role / Timing Role: Generates clean 3.0V for ISO/IEC 14443-A/B RF interface and cryptographic co-processor. Use Value: High line/load regulation (±15mV) ensures consistent RF field strength and secure transaction timing across varying battery states. |
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/TT | 250mA max output, 175mV dropout @ 250mA, 30µVrms noise, SOT-23-3 package | Lacks enable pin; fixed ON-state only; smaller package but lower current capability | Select when enable control is unnecessary and board space is more constrained than current demand. |
| Torex XC6206P302MR-G | 300mA max, 150mV dropout @ 100mA, 40µVrms noise, SOT-23-5 package, no CE pin | No enable function; slightly lower noise but higher dropout limits low-voltage battery use | Prefer when ultra-low noise is prioritized over shutdown control and input headroom exceeds 150mV. |
Compared with MCP1700T-3002E/TT and XC6206P302MR-G, the AP2125KC-3.0TRE1 uniquely combines 300mA capability, sub-100mV dropout, enable functionality, and SC-70-5 footprint-making it optimal for space-limited, battery-powered systems requiring dynamic power management and analog-grade cleanliness.
Availability
AP2125KC-3.0TRE1 is available at Aetrix Electronics and suitable for wireless transceivers, portable medical sensors, industrial IoT edge nodes, and smart card reader modules requiring stable component supply with guaranteed long-term availability.
Supply support for AP2125KC-3.0TRE1 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-reliability, energy-efficient components for consumer, industrial, and automotive markets.
The AP2125 series belongs to Diodes' precision LDO regulator product line, engineered specifically for battery-powered portable electronics demanding ultra-low noise, low dropout, and minimal quiescent current.
FAQ
What is the minimum input voltage required for AP2125KC-3.0TRE1 to regulate 3.0V output?
The AP2125KC-3.0TRE1 requires VIN ≥ VOUT + 0.5V = 3.5V under recommended operating conditions. At 100mA load, its dropout is 65mV, so regulation begins at ~3.065V-but Diodes specifies 3.5V minimum to guarantee performance across temperature and process variation.
Can AP2125KC-3.0TRE1 operate with a 1µF ceramic capacitor on both input and output?
Yes-AP2125KC-3.0TRE1 is explicitly designed for stability with 1µF X5R/X7R ceramic capacitors on both VIN and VOUT, as confirmed in DS38144 Section 8. No ESR requirement or damping resistor is needed, simplifying BOM and layout.
Does the NC pin (Pin 4) require any PCB routing or grounding?
No-Pin 4 is internally unconnected. Diodes recommends leaving it floating or optionally connecting it to GND for mechanical stability; neither choice affects electrical performance or thermal behavior.
How does the thermal shutdown feature behave during overload conditions?
When junction temperature reaches +160°C, AP2125KC-3.0TRE1 disables output and enters thermal shutdown. It remains off until temperature drops by ≥25°C hysteresis (to ≤135°C), then automatically resumes regulation-no external reset required.
AP2125KC-3.0TRE1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SC-82
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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:
- 65dB (100Hz ~ 1kHz)
- Control Features:
- Enable
- Protection Features:
- Over Current, Over Temperature
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-82
AP2125KC-3.0TRE1 FAQ
1.How can I place an order for AP2125KC-3.0TRE1 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP2125KC-3.0TRE1 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 AP2125KC-3.0TRE1 reliable?
The price and inventory of AP2125KC-3.0TRE1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP2125KC-3.0TRE1 is usually 5 days.
3.What payment methods are accepted for AP2125KC-3.0TRE1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP2125KC-3.0TRE1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP2125KC-3.0TRE1?
AP2125KC-3.0TRE1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP2125KC-3.0TRE1 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 AP2125KC-3.0TRE1?
For technical support, including AP2125KC-3.0TRE1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP2125KC-3.0TRE1 requirements.
6.How does Aetrix verify that AP2125KC-3.0TRE1 is sourced from the original manufacturer or authorized distributors?
All AP2125KC-3.0TRE1 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 AP2125KC-3.0TRE1 meets industry standards.
7.What is the process for return or replacement of AP2125KC-3.0TRE1?
All AP2125KC-3.0TRE1 units undergo pre-shipment inspection (PSI). If there is an issue with AP2125KC-3.0TRE1, 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 AP2125KC-3.0TRE1 part is unused and in its original packaging.
Return procedure for AP2125KC-3.0TRE1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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