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Analog Devices Inc. ADP3309ARTZ-3.6-R7
- Part No.:
- ADP3309ARTZ-3.6-R7
- Manufacturer:
- Analog Devices Inc.
- Package:
- SC-74A, SOT-753
- Datasheet:
-
ADP3309ARTZ-3.6-R7.pdf
- Description:
- IC REG LINEAR 3.6V 100MA SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:3,000
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Product details
Overview
ADP3309ARTZ-3.6-R7 from Analog Devices is a precision 3.6 V fixed-output low dropout linear regulator (LDO) delivering up to 100 mA with ±1.2% accuracy at 25°C, 120 mV typical dropout at 100 mA, and stable operation using only a 0.47 μF ceramic output capacitor. It serves as a post-regulator in battery-powered portable electronics requiring clean, tightly regulated voltage rails.
For engineers reviewing the ADP3309ARTZ-3.6-R7 datasheet, ADP3309ARTZ-3.6-R7 pinout, ADP3309ARTZ-3.6-R7 application, or ADP3309ARTZ-3.6-R7 equivalent, key selection criteria include its anyCAP stability with MLCCs, active-low shutdown (1 μA quiescent current), open-collector error flag for pre-dropout warning, and SOT-23-5 package compatibility with space-constrained PCB layouts.
Technical Context
The ADP3309ARTZ-3.6-R7 employs a patented single-loop architecture with a high-gain error amplifier and noninverting driver that enables pole-splitting compensation - making it stable across capacitor types (including ESR ≈ 0 MLCCs) without external compensation. Its bandgap-referenced feedback network uses resistor dividers (R1/R2) scaled to the 3.6 V output, with temperature-proportional offset voltage generation ensuring ±2.2% total accuracy over −20°C to +85°C.
It integrates thermal overload protection (soft shutdown at 165°C), current limiting, and an open-collector ERR pin that asserts low before regulation loss - enabling system-level fault anticipation. The shutdown pin accepts TTL-compatible logic and reduces ground current to ≤1 μA when asserted.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.6 V ±1.2% at 25°C; ±2.2% over full temperature/load/line range - ensures stable rail for 3.3 V–3.6 V logic and analog circuitry. |
| Dropout Voltage | 120 mV typical at 100 mA - enables operation from 3.72 V input (e.g., single Li-ion cell at end-of-discharge) while maintaining regulation. |
| Output Capacitor | Stable with ≥0.47 μF ceramic (MLCC); no ESR requirement - eliminates capacitor selection risk and saves board space vs. electrolytic/tantalum. |
| Ground Current | 0.8–2.0 mA at 100 mA load; ≤1 μA in shutdown - minimizes battery drain during sleep modes in portable devices. |
| Noise Performance | 100 μV rms (10 Hz–100 kHz); low noise spectral density - suitable for powering RF ICs, ADCs, and precision analog sensors. |
| Input Voltage Range | 2.8 V to 12 V - supports single-cell Li-ion (2.8–4.2 V), 3.3 V/5 V system rails, and industrial 9–12 V inputs. |
| Thermal Protection | Soft thermal shutdown at 165°C with ERR flag assertion - prevents catastrophic failure while allowing graceful system response. |
Pinout & Package
ADP3309ARTZ-3.6-R7 is housed in a Pb-free 5-lead SOT-23 (RJ-5) package, 2.90 mm × 1.60 mm × 1.30 mm, with exposed pad not electrically connected. Thermal resistance θJA = 190°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - IN | Regulator input supply | Accepts 2.8–12 V; requires no mandatory input capacitor but benefits from 0.47 μF bypass if source impedance is high. |
| 2 - GND | Power ground reference | Common return path for load, internal circuitry, and thermal dissipation; must be low-impedance connection. |
| 3 - SD | Active-low shutdown control | Pull low to disable output; tie to IN for always-on operation; draws ≤9 μA max when high. |
| 4 - ERR/NC | Open-collector error flag | Drives low when output is about to drop out (e.g., VIN < VOUT + VDROP); can be left floating or pulled up externally. |
| 5 - OUT | Regulated 3.6 V output | Delivers up to 100 mA; requires ≥0.47 μF ceramic capacitor to ground for stability and transient response. |
Key Features
| Feature | Design Value |
|---|---|
| anyCAP® stability | Operates stably with 0.47 μF MLCCs - eliminates ESR dependency and simplifies BOM by removing need for specialized capacitors. |
| Pre-dropout warning | ERR pin asserts low before regulation loss - enables host MCU to initiate power-save routines or alert users prior to brownout. |
| Ultralow shutdown current | ≤1 μA ground current in shutdown - extends battery life in intermittently powered systems like barcode scanners and IoT sensors. |
| High accuracy over conditions | ±2.2% total output error across −20°C to +85°C, line, and load - reduces need for downstream calibration in measurement systems. |
| Integrated thermal protection | Soft shutdown at 165°C with automatic recovery - avoids latch-up and enables robust operation in sealed enclosures or high-ambient environments. |
Applications
| Cellular Telephones | Notebook Computers |
|---|---|
Use Scenario: Powering baseband processor I/O banks and camera sensor bias rails from a shared Li-ion battery. IC Role / Device Role / Timing Role: Low-noise, fast-transient LDO providing clean 3.6 V supply independent of battery voltage sag. Use Value: Prevents digital noise coupling into analog sensor paths and maintains regulation down to 3.72 V input - extending usable battery runtime. |
Use Scenario: Regulating 3.6 V for USB controller PHY and PCIe clock buffer from a 5 V system rail. IC Role / Device Role / Timing Role: Post-regulator suppressing switching noise from upstream DC/DC converters. Use Value: 100 μV rms noise and >60 dB PSRR at 100 kHz ensure jitter-free USB 2.0 signaling and reliable PCIe link training. |
| Bar Code Scanners | Camcorders |
Use Scenario: Supplying laser diode driver and CMOS image sensor in handheld scanning units powered by AA/AAA batteries. IC Role / Device Role / Timing Role: Efficient, low-quiescent LDO enabling long standby time and instant wake-up. Use Value: 1 μA shutdown current and 120 mV dropout allow operation from 3.0 V alkaline cells until near depletion - maximizing scan cycles per battery set. |
Use Scenario: Providing stable 3.6 V to image signal processor (ISP) and auto-focus motor driver in compact camcorders. IC Role / Device Role / Timing Role: Precision voltage source with pre-failure warning for thermal management. Use Value: ERR flag alerts firmware before thermal shutdown occurs, allowing graceful video save and lens retraction before power loss. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar low-dropout linear regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LP2981AIM5-3.6/NOPB | Pin-for-pin compatible but higher 200 mV dropout at 100 mA; requires minimum 3.3 μF output capacitor with specific ESR range. | Lacks anyCAP flexibility and pre-dropout ERR flag; less suitable for MLCC-only designs or predictive power management. | Choose LP2981AIM5-3.6/NOPB only if legacy design reuse is required and capacitor ESR can be tightly controlled. |
| MCP1700T-3602E/TT | 150 mA rated, 175 mV dropout at 250 mA, but only ±2% accuracy over temperature; no ERR pin or thermal warning. | Lower cost but lacks fault detection and tighter regulation - acceptable for non-critical digital rails, not precision analog. | Select MCP1700T-3602E/TT for cost-sensitive, non-safety-critical applications where 3.6 V tolerance >±2% is acceptable. |
Compared with LP2981AIM5-3.6/NOPB and MCP1700T-3602E/TT, the ADP3309ARTZ-3.6-R7 delivers superior regulation accuracy, lower dropout, true anyCAP flexibility, and integrated pre-failure diagnostics - making it optimal for portable systems demanding reliability, miniaturization, and intelligent power management.
Availability
ADP3309ARTZ-3.6-R7 is available at Aetrix Electronics and suitable for cellular telephones, notebook computers, and bar code scanners requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for ADP3309ARTZ-3.6-R7 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 ADP330x family was designed specifically for battery-powered portable electronics needing ultra-low-noise, low-quiescent, and capacitor-flexible LDOs - targeting space-constrained, thermally sensitive, and energy-efficient applications.
FAQ
What is the maximum output current capability of the ADP3309ARTZ-3.6-R7?
The ADP3309ARTZ-3.6-R7 delivers up to 100 mA continuously under typical thermal conditions (θJA = 190°C/W, TA ≤ 85°C). Peak load current reaches 150 mA for short durations. Exceeding 100 mA requires external heat sinking or derating based on calculated junction temperature using PD = (VIN – 3.6 V) × ILOAD + VIN × IGNDD.
Does the ADP3309ARTZ-3.6-R7 require an input capacitor?
The ADP3309ARTZ-3.6-R7 does not require an input capacitor for stability, but a 0.47 μF ceramic capacitor from IN to GND is recommended when the input source has high impedance or is located remotely on the PCB. This reduces sensitivity to layout-induced noise and improves transient response during input voltage steps.
How does the ERR pin on the ADP3309ARTZ-3.6-R7 function?
The ERR pin on the ADP3309ARTZ-3.6-R7 is an open-collector output that pulls low when the input voltage approaches the sum of the 3.6 V output and dropout voltage - signaling imminent loss of regulation. It provides hysteresis to prevent chatter and enables early system intervention before brownout. A pull-up resistor (typically 10–100 kΩ) to 3.3 V or 5 V is required for proper logic-level detection.
Can the ADP3309ARTZ-3.6-R7 be used with multilayer ceramic capacitors (MLCCs)?
Yes - the ADP3309ARTZ-3.6-R7 is explicitly designed for anyCAP® operation and is stable with MLCCs as small as 0.47 μF, regardless of ESR (including ESR ≈ 0). This eliminates capacitor selection constraints and supports ultra-compact, high-reliability designs where tantalum or aluminum electrolytics are undesirable.
What is the operating ambient temperature range for the ADP3309ARTZ-3.6-R7?
The ADP3309ARTZ-3.6-R7 is specified for operation from −20°C to +85°C ambient temperature. Its absolute maximum junction temperature is 125°C, and thermal shutdown activates at 165°C die temperature. For continuous 100 mA operation at 85°C ambient, ensure adequate PCB copper area or airflow to maintain TJ ≤ 125°C per the thermal calculation PD × θJA.
ADP3309ARTZ-3.6-R7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- anyCAP®
- 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):
- 12V
- Voltage - Output (Min/Fixed):
- 3.6V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.25V @ 100mA
- Current - Output:
- 100mA
- Current - Quiescent (Iq):
- 300 µA
- Current - Supply (Max):
- 2 mA
- PSRR:
- -
- Control Features:
- Error Flag, Shutdown
- Protection Features:
- Over Temperature
- Operating Temperature:
- -20°C ~ 80°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
ADP3309ARTZ-3.6-R7 FAQ
1.How can I place an order for ADP3309ARTZ-3.6-R7 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADP3309ARTZ-3.6-R7 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 ADP3309ARTZ-3.6-R7 reliable?
The price and inventory of ADP3309ARTZ-3.6-R7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADP3309ARTZ-3.6-R7 is usually 5 days.
3.What payment methods are accepted for ADP3309ARTZ-3.6-R7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADP3309ARTZ-3.6-R7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADP3309ARTZ-3.6-R7?
ADP3309ARTZ-3.6-R7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADP3309ARTZ-3.6-R7 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 ADP3309ARTZ-3.6-R7?
For technical support, including ADP3309ARTZ-3.6-R7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADP3309ARTZ-3.6-R7 requirements.
6.How does Aetrix verify that ADP3309ARTZ-3.6-R7 is sourced from the original manufacturer or authorized distributors?
All ADP3309ARTZ-3.6-R7 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 ADP3309ARTZ-3.6-R7 meets industry standards.
7.What is the process for return or replacement of ADP3309ARTZ-3.6-R7?
All ADP3309ARTZ-3.6-R7 units undergo pre-shipment inspection (PSI). If there is an issue with ADP3309ARTZ-3.6-R7, 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 ADP3309ARTZ-3.6-R7 part is unused and in its original packaging.
Return procedure for ADP3309ARTZ-3.6-R7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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