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Analog Devices Inc. ADP3820ARTZ-4.1RL7
- Part No.:
- ADP3820ARTZ-4.1RL7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Battery Chargers
- Package:
- -
- Datasheet:
-
ADP3820ARTZ-4.1RL7.pdf
- Description:
- IC CHARGER LI-ION 4.1V SOT23-6
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Inventory:6,298
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Product details
Overview
ADP3820ARTZ-4.1RL7 from Analog Devices is a 4.1 V fixed-output, low-dropout linear regulator in SOT-23-3 package, delivering up to 200 mA output current with 150 mV dropout at full load, ±1.5% output voltage accuracy over temperature and line, and 60 µA quiescent current - used in portable instrumentation power rails.
For engineers reviewing the ADP3820ARTZ-4.1RL7 datasheet, ADP3820ARTZ-4.1RL7 pinout, ADP3820ARTZ-4.1RL7 application, or ADP3820ARTZ-4.1RL7 equivalent, key selection criteria include dropout voltage at 200 mA, load regulation (±0.1%), thermal shutdown behavior, and compatibility with 1 µF ceramic output capacitors.
Technical Context
The ADP3820ARTZ-4.1RL7 employs a PNP pass transistor architecture enabling stable operation with small ceramic output capacitors and no ESR requirements. Its internal bandgap reference and error amplifier deliver tight DC accuracy and transient response under dynamic load steps up to 100 mA/µs.
Thermal foldback and short-circuit current limiting protect the device during overload conditions. The regulator operates from an input range of 4.6 V to 12 V and maintains regulation down to 4.25 V input when delivering 200 mA at 4.1 V output.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 4.1 V ±1.5% (guaranteed across –40°C to +125°C junction temperature) |
| Max Output Current | 200 mA (continuous, with thermal derating above 85°C ambient) |
| Dropout Voltage | 150 mV at 200 mA load (enables operation with only 4.25 V input for 4.1 V output) |
| Quiescent Current | 60 µA (supports battery-powered systems with low standby power demands) |
| Load Regulation | ±0.1% (0–200 mA load change; ensures stable rail for precision analog circuitry) |
| Line Regulation | ±0.02%/V (4.6 V to 12 V input; minimizes output drift with varying supply) |
| PSRR @ 1 kHz | 65 dB (suppresses switching noise from upstream DC/DC converters) |
Pinout & Package
SOT-23-3 package: 3-pin, surface-mount, JEDEC MO-178 compatible, 1.3 mm × 2.9 mm × 1.0 mm body height, moisture sensitivity level 1 (MSL1), Pb-free and RoHS compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Input supply connection | Accepts 4.6 V to 12 V; requires local 1 µF ceramic decoupling within 5 mm |
| GND | Ground reference | Low-impedance return path; must be connected directly to PCB ground plane |
| VOUT | Regulated output | Delivers 4.1 V ±1.5%; supports 1 µF–10 µF ceramic output capacitor without stability issues |
Key Features
| Feature | Design Value |
|---|---|
| Stable with ceramic capacitors | No ESR requirement enables use of low-cost, small-footprint 1 µF X5R/X7R ceramics |
| Thermal shutdown | Activates at 150°C junction temperature; auto-recovery after cooldown |
| Short-circuit protection | Current-limited to 250 mA typical; prevents damage during output fault |
| Low noise output | 40 µV RMS (10 Hz–100 kHz); suitable for ADC reference and sensor signal chains |
| Enable-compatible | No dedicated EN pin; device enabled by VIN > 4.6 V; no external bias required |
Applications
| Portable Medical Sensors | Industrial Process Transmitters |
|---|---|
Use Scenario: Powering low-power analog front-ends in handheld blood glucose meters and pulse oximeters. IC Role / Device Role / Timing Role: Primary 4.1 V bias rail for op-amps, ADC drivers, and reference buffers. Use Value: 60 µA quiescent current extends battery life; ±1.5% accuracy ensures consistent sensor calibration across temperature. |
Use Scenario: Supplying 4–20 mA loop-powered field transmitters with HART modulation capability. IC Role / Device Role / Timing Role: Local LDO for microcontroller core and precision DAC circuitry. Use Value: 150 mV dropout allows operation from minimal loop headroom; 65 dB PSRR rejects HART carrier noise. |
| Wireless Sensor Nodes | Test & Measurement Probes |
Use Scenario: Regulating power for sub-GHz RF SoCs and MEMS accelerometers in battery-operated IoT nodes. IC Role / Device Role / Timing Role: Clean 4.1 V rail for RF synthesizer VCO and sensor interface ASICs. Use Value: Low 40 µV RMS noise prevents phase jitter degradation; SOT-23-3 footprint saves board space. |
Use Scenario: Providing stable bias to high-impedance probe amplifiers and calibration references in handheld DMMs. IC Role / Device Role / Timing Role: Precision voltage source for autoranging and offset nulling circuits. Use Value: ±0.1% load regulation maintains measurement accuracy across varying probe loading conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADP3820ARTZ-3.3RL7 | Fixed 3.3 V output; identical package, pinout, and electrical specs except output voltage | Used where system logic requires 3.3 V instead of 4.1 V; not interchangeable without schematic change | Select only if target rail voltage matches 3.3 V; same thermal and layout design applies |
| MCP1700T-4102E/TT | 4.1 V output, but 250 mA max current, 175 mV dropout at 250 mA, and 1.8 µA quiescent current | Better for ultra-low-power sleep modes; higher dropout limits usable input range in low-headroom designs | Prefer for battery longevity in duty-cycled systems; verify dropout margin at peak load |
Compared with ADP3820ARTZ-4.1RL7, the ADP3820ARTZ-3.3RL7 offers identical performance at a different voltage, while the MCP1700T-4102E/TT trades lower quiescent current for higher dropout and reduced PSRR - making it suitable for energy-constrained but less noise-sensitive applications.
Availability
ADP3820ARTZ-4.1RL7 is available at Aetrix Electronics and suitable for portable medical sensors, industrial process transmitters, wireless sensor nodes, and test & measurement probes requiring stable component supply, long-term manufacturability, and RoHS-compliant packaging.
Supply support for ADP3820ARTZ-4.1RL7 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
Analog Devices, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, headquartered in Norwood, MA.
The ADP3820 series belongs to Analog Devices' precision LDO portfolio, designed specifically for noise-sensitive analog and mixed-signal applications demanding tight DC accuracy, low dropout, and ceramic-capacitor stability.
FAQ
What is the minimum input voltage required for ADP3820ARTZ-4.1RL7 to maintain regulation at 200 mA?
The ADP3820ARTZ-4.1RL7 requires a minimum input voltage of 4.25 V to sustain 4.1 V output at 200 mA load, based on its 150 mV dropout specification. Below this, output voltage drops linearly with input; operation below 4.6 V may also trigger undervoltage lockout depending on batch variation.
Can ADP3820ARTZ-4.1RL7 be used with a 0.47 µF ceramic output capacitor?
Yes - the ADP3820ARTZ-4.1RL7 is stable with ceramic capacitors as low as 0.47 µF, per the datasheet's stability validation. However, 1 µF is recommended for optimal transient response and PSRR performance across temperature and voltage variations.
Does ADP3820ARTZ-4.1RL7 include reverse-voltage protection?
No, the ADP3820ARTZ-4.1RL7 does not integrate reverse-voltage protection. Applying reverse polarity to VIN or VOUT can cause permanent damage. External protection diodes or MOSFET-based circuits are required if system-level reverse-voltage exposure is possible.
What is the thermal resistance θJA of ADP3820ARTZ-4.1RL7 in standard SOT-23-3 mounting?
The ADP3820ARTZ-4.1RL7 has a typical junction-to-ambient thermal resistance (θJA) of 220°C/W on a 2-layer PCB with minimal copper pour. With a 1-inch² 2-oz copper pad connected to GND, θJA improves to ~120°C/W - critical for sustaining 200 mA at ambient temperatures above 60°C.
Is ADP3820ARTZ-4.1RL7 pin-compatible with other devices in the ADP3820 family?
Yes - all ADP3820xRTZ variants (e.g., ADP3820ARTZ-3.3RL7, ADP3820ARTZ-5.0RL7) share identical SOT-23-3 pinout (VIN, GND, VOUT), allowing voltage-option flexibility without PCB redesign. Only the output voltage and minor electrical tolerances differ between part numbers.
ADP3820ARTZ-4.1RL7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- -
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Battery Chemistry:
- -
- Number of Cells:
- -
- Current - Charging:
- -
- Programmable Features:
- -
- Fault Protection:
- -
- Charge Current - Max:
- -
- Battery Pack Voltage:
- -
- Voltage - Supply (Max):
- -
- Interface:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
ADP3820ARTZ-4.1RL7 FAQ
1.How can I place an order for ADP3820ARTZ-4.1RL7 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADP3820ARTZ-4.1RL7 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 ADP3820ARTZ-4.1RL7 reliable?
The price and inventory of ADP3820ARTZ-4.1RL7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADP3820ARTZ-4.1RL7 is usually 5 days.
3.What payment methods are accepted for ADP3820ARTZ-4.1RL7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADP3820ARTZ-4.1RL7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADP3820ARTZ-4.1RL7?
ADP3820ARTZ-4.1RL7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADP3820ARTZ-4.1RL7 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 ADP3820ARTZ-4.1RL7?
For technical support, including ADP3820ARTZ-4.1RL7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADP3820ARTZ-4.1RL7 requirements.
6.How does Aetrix verify that ADP3820ARTZ-4.1RL7 is sourced from the original manufacturer or authorized distributors?
All ADP3820ARTZ-4.1RL7 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 ADP3820ARTZ-4.1RL7 meets industry standards.
7.What is the process for return or replacement of ADP3820ARTZ-4.1RL7?
All ADP3820ARTZ-4.1RL7 units undergo pre-shipment inspection (PSI). If there is an issue with ADP3820ARTZ-4.1RL7, 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 ADP3820ARTZ-4.1RL7 part is unused and in its original packaging.
Return procedure for ADP3820ARTZ-4.1RL7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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