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Analog Devices Inc. ADP3000AN-3.3
- Part No.:
- ADP3000AN-3.3
- Manufacturer:
- Analog Devices Inc.
- Package:
- -
- Datasheet:
-
ADP3000AN-3.3.pdf
- Description:
- IC REG STEP UP/DWN 3.3V 8-DIP
- Quantity:
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Product details
Overview
ADP3000AN-3.3 from Analog Devices is a micropower step-up/step-down switching regulator IC with fixed 3.3 V output, operating from 2 V to 30 V input, delivering up to 180 mA in boost mode and 100 mA in buck mode, consuming only 500 µA quiescent current, and switching at 400 kHz for compact external component sizing - used in portable instrumentation and low-voltage battery-powered systems.
For engineers reviewing the ADP3000AN-3.3 datasheet, ADP3000AN-3.3 pinout, ADP3000AN-3.3 application, or ADP3000AN-3.3 equivalent, key selection criteria include input voltage range (2–30 V), output accuracy (±5% at 3.3 V), integrated current limiting, on-chip low-battery detection capability, and compatibility with space-constrained PCB layouts requiring minimal inductors and capacitors.
Technical Context
The ADP3000AN-3.3 implements pulse frequency modulation (PFM) control with a gated 400 kHz oscillator, enabling ultra-low quiescent current operation. Its internal 1.245 V reference and comparator-based feedback loop provide stable regulation without external compensation components.
It integrates dual-mode power switch terminals (SW1 collector, SW2 emitter) enabling both step-up and step-down topologies, and features an auxiliary gain block (SET/AO pins) configurable as low-battery detector or error amplifier - all within a single 8-lead PDIP package with no external resistor divider required for the fixed 3.3 V version.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.3 V ±5% (3.135–3.465 V), laser-trimmed on-die resistors eliminate external feedback network. |
| Input Voltage Range | 2 V to 12.6 V (step-up), 2 V to 30 V (step-down); supports single-cell Li-ion, NiMH, and multi-cell alkaline inputs. |
| Quiescent Current | 500 µA in shutdown mode (VFB > 1.43 V), enabling >1000-hour battery life in standby instrumentation. |
| Switching Frequency | 400 kHz typical (350–450 kHz), permits use of sub-10 µH inductors and <220 µF low-ESR tantalum capacitors. |
| Output Current Capability | 180 mA @ 3.3 V from 2 V input (boost), 100 mA @ 3 V from 5 V input (buck); defined by internal current limit and thermal limits. |
| Oscillator Duty Cycle | 65–80% in active mode, enabling high efficiency across wide input/output ratios without external timing components. |
| Current Limit Setting | 400 mA default (ILIM tied to VIN); programmable down via external resistor (e.g., 220 Ω yields 400 mA limit). |
Pinout & Package
ADP3000AN-3.3 is housed in an 8-lead plastic DIP (N-8) package with 0.300-inch width, JEDEC MO-095AA compliant, suitable for through-hole prototyping and industrial PCB assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 ILIM | Current limit programming input | Connect to VIN for max 1.5 A switch current; tie to VIN via 220 Ω resistor to set 400 mA limit for optimized inductor sizing. |
| 2 VIN | Main power input | Accepts 2–30 V DC; supplies internal circuitry and powers switch driver; must be decoupled with ≥10 µF low-ESR capacitor. |
| 3 SW1 | Power switch collector | In boost: connects to inductor/diode node; in buck: connects directly to VIN; rated to 50 V peak. |
| 4 SW2 | Power switch emitter | In boost: connects to GND; in buck: connects to inductor/diode node; must not fall >0.35 V below GND. |
| 5 GND | Analog and power ground | Common reference for feedback, oscillator, and gain block; requires low-impedance connection to minimize noise coupling. |
| 6 AO | Auxiliary gain block open-collector output | Sinks ≥300 µA; used for low-battery flag or post-regulator control; requires external pull-up for logic-level signaling. |
| 7 SET | Gain block non-inverting input | Accepts resistor divider from VIN to configure low-battery threshold (e.g., 1.245 V reference sets trip point). |
| 8 FB (SENSE) | Feedback input / output sense | Direct connection to regulated 3.3 V output; internal laser-trimmed divider eliminates external resistors for fixed-output versions. |
Key Features
| Feature | Design Value |
|---|---|
| Dual-mode topology support | Single IC enables both step-up (2 V → 3.3 V) and step-down (5 V → 3.3 V) conversion without redesigning control loop or layout. |
| Integrated current limiting | User-adjustable cycle-by-cycle switch current limit (400 mA standard) reduces need for oversized magnetics and improves short-circuit robustness. |
| On-chip low-battery detector | Configurable via SET/AO pins using external resistors; provides system-level battery monitoring without adding discrete comparators. |
| High-frequency PFM operation | 400 kHz switching enables <10 µH inductors and <220 µF tantalum capacitors, reducing board area by >40% vs. 100 kHz alternatives. |
| Fixed-output precision | ±5% output tolerance over temperature and line/load, achieved via on-die laser-trimmed resistors - eliminates calibration labor and BOM cost. |
Applications
| Portable Instrumentation | Cellular Handset Power |
|---|---|
Use Scenario: Battery-powered handheld multimeter with LCD display and microcontroller, operating from single 3.6 V Li-ion cell. IC Role / Device Role / Timing Role: Step-down regulator converting 3.6–4.2 V battery to stable 3.3 V for MCU, ADC, and display logic. Use Value: 500 µA quiescent current extends battery life beyond 1000 hours in sleep mode; 400 kHz switching minimizes EMI near sensitive analog front-end. |
Use Scenario: GSM handset requiring 3.3 V rail for baseband processor during burst transmission, powered by 3.4–4.2 V Li-ion. IC Role / Device Role / Timing Role: High-efficiency step-down converter delivering 100 mA at 3.3 V with fast transient response to RF power bursts. Use Value: Integrated current limit prevents inductor saturation during load transients; fixed 3.3 V output eliminates feedback resistor placement errors. |
| Notebook Subsystem Supply | Hard Disk Drive Interface |
Use Scenario: Auxiliary 3.3 V supply for USB controller and touchpad in ultra-thin notebook, fed from main 5 V rail. IC Role / Device Role / Timing Role: Buck converter stepping 5 V down to 3.3 V with minimal footprint and thermal rise on dense motherboard. Use Value: 8-lead PDIP package allows manual rework; 120°C/W thermal resistance (N-8) keeps junction temp <95°C at full load in ambient 70°C. |
Use Scenario: 3.3 V supply for HDD servo controller and interface logic, derived from 5 V or 12 V system rail. IC Role / Device Role / Timing Role: Regulated 3.3 V source supporting fast spin-up and seek operations with tight voltage tolerance. Use Value: ±5% output accuracy ensures reliable SPI/I²C communication; on-chip hysteresis stabilizes regulation without external compensation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar switching regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX630ESA+ | Fixed 3.3 V output, 2–16.5 V input, 100 mA max, 100 kHz switching, SO-8 package. | Limited to lower input voltage and output current; lacks step-up capability and adjustable current limit. | Choose MAX630ESA+ only when input stays ≤16.5 V and board space favors SOIC over PDIP. |
| TPS61040DRVR | 3.3 V adjustable via feedback resistors, 1.8–6 V input, 280 mA boost-only, 500 kHz, 6-pin SOT-23. | Boost-only topology; requires external feedback network; higher quiescent current (25 µA active, 1 µA shutdown). | Choose TPS61040DRVR only for strictly boost applications where ultra-small SOT-23 footprint outweighs need for buck mode and fixed-output simplicity. |
Compared with MAX630ESA+ and TPS61040DRVR, ADP3000AN-3.3 uniquely supports both step-up and step-down modes with fixed 3.3 V output, delivers higher output current in boost configuration, and maintains 500 µA quiescent current across its full 2–30 V input range - making it optimal for dual-mode portable systems with variable battery states.
Availability
ADP3000AN-3.3 is available at Aetrix Electronics and suitable for portable instrumentation, cellular handset subsystems, and hard disk drive interface power requiring stable component supply, long-lifecycle availability, and through-hole manufacturability.
Supply support for ADP3000AN-3.3 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, serving industrial, automotive, communications, and consumer markets.
The ADP3000 family was designed specifically for micropower, dual-mode DC/DC conversion in space- and battery-constrained portable electronics - emphasizing ultra-low IQ, integrated protection, and topology flexibility without sacrificing output precision.
FAQ
What is the maximum input voltage the ADP3000AN-3.3 can handle in step-down mode?
The ADP3000AN-3.3 supports up to 30 V input in step-down mode, with absolute maximum rating of 36 V. Operation above 30 V risks exceeding thermal limits and degrading long-term reliability. For 30 V continuous operation, ensure adequate PCB copper area and verify junction temperature remains below 125°C per thermal calculations in the datasheet.
Does the ADP3000AN-3.3 require external feedback resistors to set the 3.3 V output?
No, the ADP3000AN-3.3 does not require external feedback resistors. It integrates laser-trimmed on-die resistors that fix the output to 3.3 V ±5%, connecting only the FB (pin 8) directly to the output. This eliminates resistor placement errors, saves board space, and improves production yield compared to adjustable versions like ADP3000-ADJ.
Can the ADP3000AN-3.3 operate in step-up mode from a 2 V input to deliver 3.3 V?
Yes, the ADP3000AN-3.3 operates in step-up mode from as low as 2 V input to deliver 3.3 V at up to 180 mA. The datasheet confirms 180 mA output at 3.3 V from a 2 V input in Figure 27, with typical efficiency of 75%. Ensure inductor saturation current exceeds 400 mA and use Schottky diode (e.g., 1N5817) for minimal forward drop.
What is the purpose of the AO and SET pins on the ADP3000AN-3.3?
The AO (pin 6) and SET (pin 7) pins form an uncommitted auxiliary gain block. SET accepts a resistor divider from VIN to set a low-battery threshold; AO sinks ≥300 µA when the threshold is crossed, enabling direct connection to a microcontroller interrupt pin. This eliminates need for external comparators in battery-monitoring subsystems.
Is the ADP3000AN-3.3 pin-compatible with other variants in the ADP3000 family?
Yes, the ADP3000AN-3.3 shares identical 8-lead PDIP (N-8) pinout with ADP3000AN-5, ADP3000AN-12, and ADP3000AN-ADJ. All variants use the same ILIM, VIN, SW1, SW2, GND, AO, SET, and FB pin assignments - allowing board-level substitution across output voltages without layout changes, provided external components match the target output.
ADP3000AN-3.3 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- -
- Packaging:
- Tube
- Product Status:
- Obsolete
- Function:
- -
- Output Configuration:
- -
- Topology:
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- Output Type:
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- Number of Outputs:
- -
- Voltage - Input (Min):
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- Voltage - Input (Max):
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- Voltage - Output (Min/Fixed):
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- Voltage - Output (Max):
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- Current - Output:
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- Frequency - Switching:
- -
- Synchronous Rectifier:
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- Operating Temperature:
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- Supplier Device Package:
- -
ADP3000AN-3.3 FAQ
1.How can I place an order for ADP3000AN-3.3 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADP3000AN-3.3 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 ADP3000AN-3.3 reliable?
The price and inventory of ADP3000AN-3.3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADP3000AN-3.3 is usually 5 days.
3.What payment methods are accepted for ADP3000AN-3.3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADP3000AN-3.3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADP3000AN-3.3?
ADP3000AN-3.3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADP3000AN-3.3 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 ADP3000AN-3.3?
For technical support, including ADP3000AN-3.3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADP3000AN-3.3 requirements.
6.How does Aetrix verify that ADP3000AN-3.3 is sourced from the original manufacturer or authorized distributors?
All ADP3000AN-3.3 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 ADP3000AN-3.3 meets industry standards.
7.What is the process for return or replacement of ADP3000AN-3.3?
All ADP3000AN-3.3 units undergo pre-shipment inspection (PSI). If there is an issue with ADP3000AN-3.3, 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 ADP3000AN-3.3 part is unused and in its original packaging.
Return procedure for ADP3000AN-3.3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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