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Diodes Incorporated AP2120N-1.3TRG1
- Part No.:
- AP2120N-1.3TRG1
- Manufacturer:
- Diodes Incorporated
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
AP2120N-1.3TRG1.pdf
- Description:
- IC REG LINEAR 1.3V 150MA SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:3,545
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Product details
Overview
AP2120N-1.3TRG1 from Diodes Incorporated is a high-speed, extremely low-noise CMOS-based LDO regulator delivering 1.3V ±2% output at up to 150mA load current, with 15µVrms noise (10Hz–100kHz), 65dB PSRR at 1kHz, and 25µA quiescent current - optimized for powering noise-sensitive analog circuitry in battery-powered portable devices.
For engineers reviewing the AP2120N-1.3TRG1 datasheet, AP2120N-1.3TRG1 pinout, AP2120N-1.3TRG1 application, or AP2120N-1.3TRG1 equivalent, key selection criteria include dropout voltage under 800mV at 100mA, compatibility with 1µF ceramic output capacitors, thermal performance in SOT-23, and operation across –40°C to +85°C junction temperature.
Technical Context
The AP2120N-1.3TRG1 integrates a precision voltage reference, error amplifier, resistor network for fixed 1.3V output, and current-limit protection. Its CMOS process enables ultra-low quiescent current and low noise without requiring external bypass capacitors for noise suppression.
It operates with input voltages from 2.3V to 6.0V and maintains regulation down to a 600mV dropout at 100mA. Load and line regulation are tightly controlled at ≤12mV and ≤4mV respectively, supporting stable biasing of RF front-ends and precision ADCs in compact portable systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 1.3V ±2% - ensures accurate biasing for 1.3V-core logic or analog sensors without external trimming. |
| Max Output Current | 150mA - sufficient to power single-core microcontrollers or low-power RF ICs in wearables. |
| Dropout Voltage | 600mV typ. @ 100mA - enables operation from partially discharged 3.0V Li-ion cells (down to ~1.9V input). |
| RMS Output Noise | 15µVrms (10Hz–100kHz) - preserves SNR in audio codecs and precision ADC references. |
| PSRR | 65dB @ 1kHz - suppresses switching noise from upstream DC/DC converters feeding the LDO input. |
| Quiescent Current | 25µA typ. - extends battery life in always-on sensor nodes and standby modes. |
| Operating Temp | –40°C to +85°C - qualified for industrial and consumer portable equipment environments. |
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 | Low-impedance return path for output current and internal bias; must connect to solid ground plane for noise control. |
| 2 VOUT | Regulated output | Delivers stable 1.3V to load; requires ≥1µF ceramic capacitor (ESR 0.01Ω–100Ω) for stability. |
| 3 VIN | Input supply | Accepts 2.3V–6.0V; requires ≥1µF ceramic input capacitor placed close to pin for transient response and PSRR optimization. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low noise regulation | 15µVrms output noise enables clean power for RF receivers and high-resolution ADCs without added filtering. |
| Ceramic capacitor compatibility | Stable with ≥1µF X5R/X7R ceramics (ESR 0.01–100Ω), eliminating need for bulkier tantalum or electrolytic capacitors. |
| Precision output accuracy | ±2% initial tolerance over temperature ensures reliable operation of 1.3V I/O domains and core rails without margining. |
| High PSRR at audio frequencies | 65dB rejection at 1kHz suppresses ripple from switching regulators, reducing audible noise in audio subsystems. |
| Low thermal resistance | θJA = 250°C/W in SOT-23 allows 150mA operation at ambient up to +85°C with minimal derating. |
Applications
| Wireless Sensor Node Power | Wearable Biometric Front-End |
|---|---|
|
Use Scenario: Powering ultra-low-power BLE SoC and analog front-end in coin-cell–operated environmental sensors. IC Role / Device Role / Timing Role: Primary 1.3V LDO supplying core logic and ADC reference voltage. Use Value: 25µA quiescent current extends 10-year battery life; 15µVrms noise prevents baseline drift in ECG/PPG signal chains. |
Use Scenario: Regulating power to optical heart-rate monitor ASIC and photodiode amplifier in smartwatch bands. IC Role / Device Role / Timing Role: Low-noise bias source for transimpedance amplifier and ADC driver stages. Use Value: 65dB PSRR rejects noise from display backlight DC/DC; ±2% accuracy maintains consistent LED drive current calibration. |
| Portable Audio Codec Bias | Sub-Board Logic Rail for Telecom Module |
|
Use Scenario: Providing clean 1.3V supply to DAC/ADC section of Bluetooth headset audio SoC. IC Role / Device Role / Timing Role: Dedicated low-noise LDO for analog signal path, decoupled from digital switching noise. Use Value: 15µVrms noise directly improves THD+N performance; 12mV load regulation prevents distortion during dynamic volume changes. |
Use Scenario: Generating 1.3V auxiliary rail on telecom sub-board hosting FPGA configuration memory and interface buffers. IC Role / Device Role / Timing Role: Secondary regulated rail isolated from main 3.3V system supply to reduce cross-talk. Use Value: 4mV line regulation maintains timing margin during input voltage sag; SOT-23 footprint saves space on dense telecom PCBs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1700T-1302E/TT | 1.3V ±1%, 250mA max, 1.6µA IQ, but higher 25µVrms noise and lower 55dB PSRR at 1kHz. | Better for ultra-low-power sleep modes; less suitable for noise-critical analog signal chains. | Choose when quiescent current dominates design priority over noise/PSRR. |
| Torex XC6206P132MR-G | 1.3V ±2%, 150mA, 18µVrms, 60dB PSRR, but only rated to +70°C ambient and lacks AEC-Q200 alignment. | Limited to commercial-grade portable electronics; not recommended for industrial or extended-temperature deployments. | Select only for cost-sensitive consumer designs operating strictly within 0–70°C ambient range. |
Compared with MCP1700T-1302E/TT and XC6206P132MR-G, the AP2120N-1.3TRG1 uniquely balances ultra-low noise (15µVrms), high PSRR (65dB), and full industrial temperature support (–40°C to +85°C) in a standard SOT-23 footprint - making it optimal for precision analog power in ruggedized portable systems.
Availability
AP2120N-1.3TRG1 is available at Aetrix Electronics and suitable for wireless sensor nodes, wearable biometric monitors, portable audio codecs, and telecom sub-board power supplies requiring stable component supply, long-lifecycle availability, and traceable sourcing.
Supply support for AP2120N-1.3TRG1 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
Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, specializing in high-performance, energy-efficient components for consumer, industrial, and communications markets.
The AP2120 series belongs to Diodes' precision LDO portfolio, engineered specifically for battery-powered portable electronics demanding ultra-low noise, low quiescent current, and robust transient response in miniature packages.
FAQ
What is the minimum input voltage required for AP2120N-1.3TRG1 to maintain regulation at 100mA load?
The AP2120N-1.3TRG1 requires VIN ≥ 2.3V to regulate at 100mA, based on its 600mV typical dropout voltage (VIN – VOUT ≥ 600mV). At 1.3V output, this yields a minimum functional input of 1.9V - however, the datasheet specifies 2.3V as the guaranteed minimum input under all conditions including temperature and tolerance variation.
Can AP2120N-1.3TRG1 be used with a 0.47µF output capacitor?
No - the datasheet mandates ≥1µF ceramic output capacitance (ESR 0.01Ω–100Ω) for stability. Using 0.47µF risks oscillation or degraded transient response, as confirmed by stability testing across temperature and load conditions in the AP2120 characterization data.
Is AP2120N-1.3TRG1 qualified for automotive applications?
No - while Diodes offers AEC-Q100–qualified variants in other LDO families, the AP2120N-1.3TRG1 is specified only for industrial/consumer use (–40°C to +85°C). The datasheet explicitly states automotive qualification requires separate PPAP-capable parts and IATF 16949 manufacturing - not applicable to this part number.
Does AP2120N-1.3TRG1 include thermal shutdown protection?
Yes - the device incorporates thermal foldback and shutdown circuitry that activates at TJ ≈ +150°C (absolute maximum junction temperature). This protects against sustained overload or poor PCB thermal design, and recovery occurs automatically once die temperature falls below the hysteresis threshold.
AP2120N-1.3TRG1 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):
- 1.3V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.8V @ 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-1.3TRG1 FAQ
1.How can I place an order for AP2120N-1.3TRG1 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP2120N-1.3TRG1 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 AP2120N-1.3TRG1 reliable?
The price and inventory of AP2120N-1.3TRG1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP2120N-1.3TRG1 is usually 5 days.
3.What payment methods are accepted for AP2120N-1.3TRG1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP2120N-1.3TRG1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP2120N-1.3TRG1?
AP2120N-1.3TRG1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP2120N-1.3TRG1 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 AP2120N-1.3TRG1?
For technical support, including AP2120N-1.3TRG1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP2120N-1.3TRG1 requirements.
6.How does Aetrix verify that AP2120N-1.3TRG1 is sourced from the original manufacturer or authorized distributors?
All AP2120N-1.3TRG1 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 AP2120N-1.3TRG1 meets industry standards.
7.What is the process for return or replacement of AP2120N-1.3TRG1?
All AP2120N-1.3TRG1 units undergo pre-shipment inspection (PSI). If there is an issue with AP2120N-1.3TRG1, 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 AP2120N-1.3TRG1 part is unused and in its original packaging.
Return procedure for AP2120N-1.3TRG1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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