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Diodes Incorporated AP2120N-1.5TRG1
- Part No.:
- AP2120N-1.5TRG1
- Manufacturer:
- Diodes Incorporated
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
AP2120N-1.5TRG1.pdf
- Description:
- IC REG LINEAR 1.5V 150MA SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:3,611
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Product details
Overview
AP2120N-1.5TRG1 from Diodes Incorporated is a high-speed, extremely low-noise CMOS-based positive LDO regulator delivering 1.5V ±2% output voltage with 150mA continuous output current, 400–600mV dropout at 100mA, and 15µVrms output noise (10Hz–100kHz). It operates from 2.5V to 6V input and targets precision power rails in battery-powered portable electronics.
For engineers reviewing the AP2120N-1.5TRG1 datasheet, AP2120N-1.5TRG1 pinout, AP2120N-1.5TRG1 application, or AP2120N-1.5TRG1 equivalent, key selection criteria include ultra-low noise performance, tight output voltage accuracy, compatibility with 1µF ceramic capacitors, and SOT-23 footprint constraints in space-constrained designs.
Technical Context
The AP2120N-1.5TRG1 integrates a precision voltage reference, error amplifier, resistor network for fixed 1.5V output, and current-limit protection circuitry. Its CMOS process enables low quiescent current (25µA typical) and high PSRR (65dB at 1kHz), critical for noise-sensitive analog and RF subsystems.
It features excellent transient response under load and line steps, supports stable operation with low-ESR ceramic capacitors ≥1µF, and maintains ±2% output accuracy across –40°C to +85°C junction temperature range without external compensation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 1.5V ±2% - ensures stable core or I/O rail for low-voltage microcontrollers and sensors |
| Dropout Voltage | 400–600mV at 100mA - enables regulation from 2.5V input down to 1.5V output with margin |
| RMS Output Noise | 15µVrms (10Hz–100kHz) - preserves signal integrity in ADC reference, RF bias, and audio paths |
| PSRR | 65dB at 1kHz - suppresses switching noise from upstream DC/DC converters |
| Quiescent Current | 25µA typical - extends battery life in always-on or low-duty-cycle portable devices |
| Load Regulation | 12mV typical (1–80mA) - minimizes output shift during dynamic current draw |
| Line Regulation | 4mV typical (2.5–6V input) - maintains stability despite battery voltage sag |
Pinout & Package
SOT-23 (N package), 3-pin surface-mount, moisture sensitivity level 1 per J-STD-020, lead-free and RoHS compliant, 0.009g weight.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 GND | Ground reference | Primary return path for output current and internal bias; requires low-impedance PCB connection |
| 2 VOUT | Regulated output | Delivers 1.5V ±2% to load; connects directly to decoupling capacitor and downstream circuitry |
| 3 VIN | Input supply | Accepts 2.5–6V unregulated input; must be bypassed with ≥1µF ceramic capacitor |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low noise output | 15µVrms (10Hz–100kHz) - enables clean power for precision analog and RF ICs |
| Low dropout at full load | 600mV max at 100mA - supports single-cell Li-ion or multi-cell alkaline operation |
| Ceramic capacitor compatible | Stable with ≥1µF, 0.01–100Ω ESR - eliminates need for bulkier tantalum or electrolytic caps |
| High PSRR | 65dB at 1kHz - rejects ripple from switching regulators feeding the LDO input |
| Tight output accuracy | ±2% over temperature and load - reduces need for post-regulation trimming in production |
Applications
| Mobile Phone Baseband Power | Wireless Sensor Node Core Supply |
|---|---|
Use Scenario: Powering baseband processor I/O banks and analog front-end in 4G/5G handsets. IC Role / Device Role / Timing Role: Primary low-noise 1.5V rail generator for mixed-signal SoC interfaces. Use Value: 15µVrms noise prevents SNR degradation in RF transceivers and ADCs sharing the same power domain. |
Use Scenario: Supplying ultra-low-power microcontroller and BLE radio in battery-operated industrial sensors. IC Role / Device Role / Timing Role: Standby-mode LDO providing regulated 1.5V to MCU core and radio PHY. Use Value: 25µA quiescent current extends 10-year battery life; 1µF ceramic compatibility simplifies layout in compact modules. |
| Digital Camera Image Sensor Bias | Portable Medical Pulse Oximeter Analog Rail |
Use Scenario: Generating clean bias voltage for CMOS image sensor analog blocks and ADC reference. IC Role / Device Role / Timing Role: Low-noise analog supply rail decoupled from digital switching noise. Use Value: 65dB PSRR and 15µVrms noise prevent fixed-pattern noise and quantization errors in raw image data. |
Use Scenario: Powering photodiode amplifier, analog front-end, and ADC in handheld pulse oximeters. IC Role / Device Role / Timing Role: Precision analog voltage source for signal chain components requiring stable DC offset. Use Value: ±2% output accuracy and <12mV load regulation ensure consistent LED drive and signal gain calibration across battery discharge cycle. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar low-noise LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1700T-1502E/TT | 250mA output, 170mV dropout at 250mA, 30µVrms noise, no current limit | Higher output current but higher noise; lacks short-circuit protection | Preferred when >150mA load or lower dropout is required, and noise tolerance is relaxed |
| TPS7A2015PDQNR | 300mA output, 130mV dropout at 300mA, 12µVrms noise, enable pin, thermal shutdown | Includes enable control and thermal protection; tighter noise spec but larger DQN package | Chosen when system-level sequencing or enhanced fault protection is needed, and board area permits 2mm × 2mm DFN |
Compared with MCP1700T-1502E/TT, AP2120N-1.5TRG1 offers superior noise rejection and integrated current limiting; versus TPS7A2015PDQNR, it trades enable functionality and lower noise for smaller SOT-23 footprint and lower cost in volume production.
Availability
AP2120N-1.5TRG1 is available at Aetrix Electronics and suitable for mobile phone power management, wireless sensor node design, portable medical instrumentation, and camera module development requiring stable component supply and long-term manufacturability.
Supply support for AP2120N-1.5TRG1 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 manufacturer specializing in discrete, analog, and mixed-signal solutions for power management, signal integrity, and connectivity applications.
The AP2120 series belongs to Diodes' high-performance LDO portfolio, designed specifically for battery-powered portable electronics demanding ultra-low noise, low quiescent current, and small-footprint regulation.
FAQ
What is the minimum input voltage required for stable 1.5V output?
The AP2120N-1.5TRG1 requires a minimum input voltage of 2.5V to maintain regulation at full load, based on its maximum dropout voltage of 600mV at 100mA. At lighter loads (≤10mA), input can drop to 2.1V while sustaining 1.5V output, but design margin should retain ≥2.5V for robust operation across temperature and process variation.
Can AP2120N-1.5TRG1 operate with a 0.47µF output capacitor?
No - the datasheet specifies a minimum output capacitance of 1µF with ESR between 0.01Ω and 100Ω for guaranteed stability. Using 0.47µF risks oscillation or poor transient response; ceramic capacitors rated ≥1µF, X5R/X7R dielectric, are recommended and validated.
Does AP2120N-1.5TRG1 include thermal shutdown protection?
No - the AP2120N-1.5TRG1 integrates overcurrent limiting (50mA short-circuit current limit) but does not include thermal shutdown circuitry. Safe operation requires PCB thermal design with adequate copper pour and ambient temperature within –40°C to +85°C, respecting θJA = 250°C/W for SOT-23.
Is AP2120N-1.5TRG1 qualified for automotive applications?
No - AP2120N-1.5TRG1 is specified for commercial/industrial temperature range (–40°C to +85°C) and is not AEC-Q100 qualified. For automotive use, Diodes offers the AP7361Q series, which meets AEC-Q100 Grade 1 and is manufactured in IATF 16949-certified facilities.
AP2120N-1.5TRG1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- 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):
- 1.5V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.6V @ 200mA
- Current - Output:
- 150mA
- Current - Quiescent (Iq):
- 50 µA
- Current - Supply (Max):
- -
- PSRR:
- 65dB (1kHz)
- Control Features:
- -
- Protection Features:
- Over Current
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
AP2120N-1.5TRG1 FAQ
1.How can I place an order for AP2120N-1.5TRG1 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP2120N-1.5TRG1 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 AP2120N-1.5TRG1 reliable?
The price and inventory of AP2120N-1.5TRG1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP2120N-1.5TRG1 is usually 5 days.
3.What payment methods are accepted for AP2120N-1.5TRG1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP2120N-1.5TRG1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP2120N-1.5TRG1?
AP2120N-1.5TRG1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP2120N-1.5TRG1 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 AP2120N-1.5TRG1?
For technical support, including AP2120N-1.5TRG1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP2120N-1.5TRG1 requirements.
6.How does Aetrix verify that AP2120N-1.5TRG1 is sourced from the original manufacturer or authorized distributors?
All AP2120N-1.5TRG1 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 AP2120N-1.5TRG1 meets industry standards.
7.What is the process for return or replacement of AP2120N-1.5TRG1?
All AP2120N-1.5TRG1 units undergo pre-shipment inspection (PSI). If there is an issue with AP2120N-1.5TRG1, 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 AP2120N-1.5TRG1 part is unused and in its original packaging.
Return procedure for AP2120N-1.5TRG1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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