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Analog Devices Inc. ADP3000AR-REEL
- Part No.:
- ADP3000AR-REEL
- Manufacturer:
- Analog Devices Inc.
- Package:
- -
- Datasheet:
-
ADP3000AR-REEL.pdf
- Description:
- IC REG STEP UP/DWN ADJ VLT 8SOIC
- Quantity:
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Inventory:162,346
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Product details
Overview
ADP3000AR-REEL from Analog Devices is a micropower step-up/step-down switching regulator IC supporting fixed 3.3 V, 5 V, 12 V, or adjustable output. It operates from 2 V to 30 V input (step-down) or 2 V to 12.6 V (step-up), delivers up to 180 mA at 3.3 V in boost mode, consumes only 500 µA quiescent current, and switches at 400 kHz. It is used in space-constrained portable power supplies for battery-powered instrumentation.
For engineers reviewing the ADP3000AR-REEL datasheet, ADP3000AR-REEL pinout, ADP3000AR-REEL application, or ADP3000AR-REEL equivalent, key selection criteria include input voltage range compatibility (2–30 V), programmable current limit via ILIM pin, on-chip low-battery detection using the auxiliary gain block, and support for both buck and boost topologies with external inductor/diode.
Technical Context
The ADP3000AR-REEL uses pulse frequency modulation (PFM) with a gated 400 kHz oscillator and internal 1.245 V reference to regulate output voltage. Its dual-transistor switch architecture allows configurable step-up (SW2 to GND, SW1 to inductor) or step-down (SW1 to VIN, SW2 to inductor) operation without topology change.
It integrates a user-programmable current limit (via resistor from ILIM to VIN), an open-collector auxiliary gain block (AO/SET pins) usable as low-battery detector or error amplifier, and comparator hysteresis (8–12.5 mV) for loop stability without external compensation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2 V to 12.6 V (step-up); 2 V to 30 V (step-down) - enables single IC use across wide battery chemistries (Li-ion, NiMH, alkaline). |
| Output Voltage Options | Fixed 3.3 V / 5 V / 12 V or adjustable via FB/SENSE pin - supports standard logic rails and custom biasing without redesign. |
| Switching Frequency | 350–450 kHz (typ. 400 kHz) - permits compact 4.7–33 µH inductors and low-ESR tantalum capacitors (e.g., AVX TPS series). |
| Quiescent Current | 500 µA (shutdown mode) - extends battery life in always-on portable devices like pagers and handheld instruments. |
| Current Limit | Programmable up to 400 mA (via 220 Ω resistor from ILIM to VIN) - allows precise inductor sizing and thermal management in high-efficiency designs. |
| Switch Saturation Voltage | 0.5–1.5 V (depending on mode/VIN/ISW) - directly impacts conduction loss and efficiency in both step-up and step-down configurations. |
| Feedback Bias Current | 160–330 nA - enables high-value feedback resistors (>100 kΩ), minimizing divider power loss in ultra-low-power systems. |
Pinout & Package
ADP3000AR-REEL is supplied in an 8-lead SOIC (R-8) package with 1.27 mm pitch, JEDEC MS-012AA compliant, thermal resistance θJA = 120°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| ILIM | Current limit programming input | Connect to VIN for max limit (1.5 A); add resistor (e.g., 220 Ω) to set 400 mA - enables safe inductor selection and overcurrent protection. |
| VIN | Main power input | Supplies internal circuitry and powers the switch; accepts 2–30 V depending on topology - serves as common rail for both modes. |
| SW1 | Power transistor collector | In step-up: drives inductor; in step-down: connects to VIN - defines primary switching node and dictates external diode placement. |
| SW2 | Power transistor emitter | In step-up: tied to GND; in step-down: drives inductor - must not go more than −350 mV below GND to avoid damage. |
| FB/SENSE | Output voltage feedback input | Compares against 1.245 V reference; for fixed versions, internally connected to laser-trimmed divider - sets regulation point with <±1.5% accuracy. |
| SET | Auxiliary gain block non-inverting input | Accepts resistor divider from VIN to configure low-battery trip point; bias current ≤400 nA minimizes loading error. |
| AO | Auxiliary gain block open-collector output | Sinks ≥300 µA; requires external pull-up; used for low-battery flag or post-regulation control - adds system-level monitoring without extra IC. |
| GND | Analog and power ground reference | Common return for internal circuits, feedback network, and external components - critical for noise immunity and regulation accuracy. |
Key Features
| Feature | Design Value |
|---|---|
| Step-up/step-down topology support | Single IC replaces separate buck and boost controllers - reduces BOM count and PCB area in multi-rail portable systems. |
| On-chip low-battery detector | Configurable trip point using SET/AO pins eliminates need for external supervisor IC - saves cost and board space in battery-powered devices. |
| User-adjustable current limit | Resistor-programmable limit (400 mA typical) enables optimized inductor selection and avoids saturation in compact layouts. |
| High-frequency 400 kHz operation | Enables use of small 6.8–15 µH inductors (e.g., Sumida CR43/CR54) and low-ESR tantalum caps - ideal for thin-profile handhelds. |
| 500 µA shutdown quiescent current | Extends shelf life and runtime in standby-critical applications like pagers and remote sensors - measurable impact on battery capacity. |
Applications
| Portable Instrument Power | Cellular Phone RF Bias Supply |
|---|---|
Use Scenario: Powering analog front-end and sensor interface in handheld multimeters or gas detectors with single-cell Li-ion (2.7–4.2 V) input. IC Role / Device Role / Timing Role: Step-up regulator generating stable 3.3 V or 5 V from declining battery voltage while maintaining regulation down to 2 V. Use Value: Enables continuous measurement accuracy during deep discharge; 500 µA quiescent current preserves battery for weeks in sleep mode. |
Use Scenario: Providing clean 3 V bias to RF power amplifier stages in GSM handsets operating from 3.4–4.2 V battery. IC Role / Device Role / Timing Role: Step-down regulator delivering 100 mA at 3 V with fast transient response to PA burst-mode load changes. Use Value: 400 kHz switching minimizes EMI near sensitive RF sections; programmable current limit prevents PA-induced overcurrent shutdown. |
| Notebook Subsystem Supply | Hard Disk Drive Actuator Driver |
Use Scenario: Generating 12 V from 5 V USB or main battery rail to power optical drive sled motors or LCD backlight inverters. IC Role / Device Role / Timing Role: Step-up regulator configured for 12 V output with 50 mA capability and tight output hysteresis (75–120 mV). Use Value: Fixed 12 V version (ADP3000-12) eliminates feedback resistor network - improves layout simplicity and long-term stability. |
Use Scenario: Supplying regulated 5 V to HDD voice coil motor driver ICs from variable 7–13 V spindle supply. IC Role / Device Role / Timing Role: Step-down regulator delivering 250 mA at 5 V with thermal-aware current limiting to prevent actuator stall under load. Use Value: Adjustable current limit (via ILIM resistor) matches motor peak demand; SOIC package fits tight HDD controller board spacing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar switching regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX1771ESA+ | Fixed 5 V output only; no adjustable version; 300 kHz switching; requires external MOSFET. | Limited to single-output designs; lacks integrated switch and step-up/step-down flexibility. | Choose when only 5 V is needed and discrete FET control is preferred for thermal optimization. |
| TPS61040DRVR | Boost-only topology; 500 kHz switching; integrated 500 mA switch; smaller 6-pin SOT-23 package. | Cannot operate in step-down mode; lower max input (6 V) limits use with higher-voltage batteries or rails. | Prefer for pure boost applications where size and integration outweigh topology flexibility. |
Compared with MAX1771ESA+ and TPS61040DRVR, ADP3000AR-REEL uniquely supports both step-up and step-down operation with a single IC, offers multiple fixed outputs plus adjustable mode, and provides on-chip current limiting and auxiliary gain functionality - making it optimal for multi-rail, battery-voltage-agile portable systems requiring minimal external components.
Availability
ADP3000AR-REEL is available at Aetrix Electronics and suitable for notebook subsystems, cellular telephone RF biasing, portable instrumentation, hard disk drive actuator drivers, and pager power management requiring stable component supply and long-lifecycle support.
Supply support for ADP3000AR-REEL 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 is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, headquartered in Norwood, MA.
The ADP3000 belongs to Analog Devices' micropower DC/DC converter product line, designed specifically for battery-operated portable electronics demanding ultra-low quiescent current, wide input range, and topology flexibility in minimal footprint.
FAQ
What is the maximum input voltage for ADP3000AR-REEL in step-down mode?
The ADP3000AR-REEL supports up to 30 V input in step-down mode, with absolute maximum rating of 36 V. Operation above 30 V risks exceeding specified performance limits; for inputs between 30 V and 36 V, derating and thermal validation are required. The device maintains regulation and current limiting integrity across its full 2–30 V operational range.
Can ADP3000AR-REEL be used to generate negative output voltages?
Yes, ADP3000AR-REEL can generate negative outputs - Figure 33 in the datasheet shows a verified −5 V / 100 mA inverter configuration using the step-down topology with SW1 grounded and SW2 driving an inductor/diode network. Output polarity reversal requires careful layout to manage ground bounce and EMI, but the IC's dual-switch architecture inherently supports this mode.
How does the ILIM pin affect current limiting in ADP3000AR-REEL?
The ILIM pin programs cycle-by-cycle current limit by sensing voltage across an external resistor (e.g., 220 Ω) tied between ILIM and VIN. Internal sense transistor scaling ensures 400 mA switch current when that resistor is used. Omitting the resistor (direct ILIM-to-VIN connection) yields 1.5 A limit. Accuracy degrades below 0.3 µs on-time, so minimum practical limit is ~200 mA.
What package type is used for ADP3000AR-REEL?
ADP3000AR-REEL is packaged in an 8-lead SOIC (R-8) with narrow body, JEDEC MS-012AA compliant, 1.27 mm lead pitch, and thermal resistance θJA = 120°C/W. This surface-mount package supports automated assembly and provides better thermal performance than the PDIP (N-8) variant, making it suitable for high-density portable PCBs.
Does ADP3000AR-REEL include built-in protection features?
ADP3000AR-REEL includes overcurrent protection via the ILIM-programmed switch limit, thermal shutdown (implied by junction temperature limits and θJA data), and ESD protection rated to 4000 V HBM. It lacks dedicated overvoltage or reverse-polarity protection - those must be implemented externally using TVS diodes or input FETs per application requirements.
ADP3000AR-REEL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- -
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Function:
- Step-Up, Step-Down
- Output Configuration:
- -
- Topology:
- Buck-Boost
- Output Type:
- Adjustable
- Number of Outputs:
- -
- Voltage - Input (Min):
- -
- Voltage - Input (Max):
- -
- Voltage - Output (Min/Fixed):
- -
- Voltage - Output (Max):
- -
- Current - Output:
- -
- Frequency - Switching:
- -
- Synchronous Rectifier:
- -
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
ADP3000AR-REEL FAQ
1.How can I place an order for ADP3000AR-REEL through Aetrix?
Please submit a Request for Quotation (RFQ) for ADP3000AR-REEL 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 ADP3000AR-REEL reliable?
The price and inventory of ADP3000AR-REEL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADP3000AR-REEL is usually 5 days.
3.What payment methods are accepted for ADP3000AR-REEL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADP3000AR-REEL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADP3000AR-REEL?
ADP3000AR-REEL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADP3000AR-REEL 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 ADP3000AR-REEL?
For technical support, including ADP3000AR-REEL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADP3000AR-REEL requirements.
6.How does Aetrix verify that ADP3000AR-REEL is sourced from the original manufacturer or authorized distributors?
All ADP3000AR-REEL 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 ADP3000AR-REEL meets industry standards.
7.What is the process for return or replacement of ADP3000AR-REEL?
All ADP3000AR-REEL units undergo pre-shipment inspection (PSI). If there is an issue with ADP3000AR-REEL, 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 ADP3000AR-REEL part is unused and in its original packaging.
Return procedure for ADP3000AR-REEL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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