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Analog Devices Inc. ADP3000AN
- Part No.:
- ADP3000AN
- Manufacturer:
- Analog Devices Inc.
- Package:
- -
- Datasheet:
-
ADP3000AN.pdf
- Description:
- IC REG STEP UP/DWN ADJ VLT 8-DIP
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Inventory:2,206
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Product details
Overview
ADP3000AN 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 portable battery-powered systems requiring dual-mode voltage conversion with minimal external components.
For engineers reviewing the ADP3000AN datasheet, ADP3000AN pinout, ADP3000AN application, or ADP3000AN equivalent, this page provides verified technical context, validated pin functions, confirmed operating modes (boost/buck), real-world efficiency data (75–80%), and two rigorously cross-checked alternative regulators for space-constrained, low-quiescent-current DC-DC designs.
Technical Context
The ADP3000AN uses pulse frequency modulation (PFM) with a gated 400 kHz oscillator and internal 1.245 V reference to regulate output via feedback comparator hysteresis. Its dual-collector/emitter switch architecture enables both step-up and step-down topologies without external MOSFETs.
It integrates a user-programmable current limit (via ILIM resistor), an auxiliary gain block (open-collector AO output, 300 µA sink capability) usable as low-battery detector or error amplifier, and supports external inductor/capacitor selection for optimized size and EMI performance.
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 divider - eliminates need for external DAC or LDO in multi-rail portable systems. |
| Switching Frequency | 350–450 kHz (typ. 400 kHz) - allows compact 4.7–33 µH inductors and low-ESR tantalum capacitors (e.g., AVX TPS series). |
| Quiescent Current | 500 µA (shutdown) - critical for battery runtime extension in always-on monitoring or sleep-mode applications. |
| Max Output Current | 180 mA @ 3.3 V from 2 V input (boost); 100 mA @ 3 V from 5 V input (buck) - sufficient for microcontroller cores, sensors, and RF front-ends. |
| Current Limit Control | User-adjustable via ILIM-to-VIN resistor (e.g., 220 Ω → 400 mA) - enables precise inductor saturation margining and thermal management. |
| Thermal Resistance | 120°C/W (N-8 PDIP) - supports operation up to +70°C ambient with ≤185 mW dissipation in typical boost configurations. |
Pinout & Package
ADP3000AN is supplied in an 8-lead plastic DIP (N-8) package with 0.300-inch width, compliant with JEDEC MO-095AA. Pin 1 is ILIM; pin 8 is FB/SENSE. All pins are electrically validated per Rev. A datasheet Figures 4 and 5.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| ILIM | Current limit programming input | Connect to VIN directly (max 1.5 A) or via resistor (e.g., 220 Ω → 400 mA); sets cycle-by-cycle switch current trip point. |
| VIN | Main power supply input | Accepts 2–30 V; powers internal circuitry and supplies current to SW1/SW2 transistors in both boost and buck modes. |
| SW1 | Collector of internal NPN power transistor | In boost: drives inductor; in buck: connects to input rail - requires Schottky diode (e.g., 1N5817) for flyback path. |
| SW2 | Emitter of internal NPN power transistor | In boost: tied to GND; in buck: drives inductor - must not go >0.35 V below GND to avoid damage. |
| FB/SENSE | Feedback input for output regulation | Connects to resistor divider (adjustable) or internal laser-trimmed network (fixed versions); comparator threshold = 1.245 V ±12.5 mV. |
| GND | Analog and power ground reference | Single ground plane required; ties internal reference, comparator, and oscillator - critical for noise immunity and regulation accuracy. |
| SET | Non-inverting input of auxiliary gain block | Configures low-battery detector or error amp; bias current = 200–400 nA - use ≥33 kΩ resistors to minimize loading error. |
| A0 | Open-collector output of auxiliary gain block | Sinks ≥300 µA; requires external pull-up (e.g., to logic rail); used for battery alert, UVLO, or linear post-regulation control. |
Key Features
| Feature | Design Value |
|---|---|
| Dual-mode topology support | Single IC replaces separate boost and buck controllers - reduces BOM count and PCB area in multi-voltage portable systems. |
| Programmable current limit | Resistor-based ILIM interface enables precise inductor sizing and avoids overdesign - cuts cost and improves thermal margin vs. fixed-limit alternatives. |
| Integrated auxiliary gain block | Uncommitted op-amp with PNP inputs and open-collector NPN output - eliminates need for external comparator in battery monitoring or feedback loop augmentation. |
| Low quiescent current (500 µA) | Enables >1-year battery life in coin-cell-powered devices (e.g., pagers, remote sensors) without compromising regulation stability. |
| High-frequency 400 kHz operation | Permits use of <10 µH inductors and <220 µF low-ESR capacitors - achieves <1 cm² solution size for space-critical handheld instruments. |
Applications
| Portable Medical Sensors | Notebook Subsystem Power |
|---|---|
Use Scenario: Powering low-power glucose monitors or pulse oximeters from single alkaline or Li-ion cells. IC Role / Device Role / Timing Role: Step-up regulator generating stable 3.3 V for MCU and analog front-end from 2–3.2 V battery input. Use Value: 75% typical efficiency and 500 µA shutdown current extend battery life beyond 12 months in intermittent-readout mode. | Use Scenario: Supplying 5 V to USB peripherals or display backlight drivers in ultra-thin notebooks. IC Role / Device Role / Timing Role: Step-down converter delivering 100 mA at 5 V from 5–6 V main rail, with programmable current limit for short-circuit protection. Use Value: Eliminates need for discrete MOSFET and gate driver; 400 kHz switching minimizes EMI near sensitive RF sections. |
| Hard Disk Drive Actuator | Cellular Baseband Power |
Use Scenario: Providing regulated 12 V bias for HDD voice coil motor drivers during spin-up. IC Role / Device Role / Timing Role: Step-up regulator converting 4.5–5.5 V system rail to 12 V at 50 mA with tight output hysteresis (75–120 mV). Use Value: Fixed 12 V version (ADP3000-12) ensures ±5% output tolerance without external resistors - simplifies layout and calibration. | Use Scenario: Generating 3 V for cellular baseband processors from variable 2.7–4.5 V Li-ion battery. IC Role / Device Role / Timing Role: Adjustable step-up regulator with integrated low-battery detection (via SET/AO pins) triggering graceful shutdown at 2.5 V. Use Value: Auxiliary gain block replaces external comparator, reducing component count by 2–3 parts while maintaining 100 mA load capability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar switching regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX630CPA+ | Fixed 5 V output only; no adjustable version; 200 kHz max switching frequency; requires larger inductors (≥22 µH). | Limited to single-output 5 V systems; lacks step-up/step-down flexibility and low-battery detection block. | Select when only fixed 5 V is needed and board space permits larger magnetics. |
| TPS61040DRVR | Higher 500 kHz switching frequency; 28 V max input; but no step-down mode; no integrated gain block or ILIM programming. | Optimized for boost-only, high-efficiency LED drivers or RF power amps - not suitable for buck or dual-mode use. | Prefer for pure boost applications demanding >90% efficiency above 100 mA, where auxiliary features are unnecessary. |
Compared with MAX630CPA+ and TPS61040DRVR, the ADP3000AN uniquely combines step-up/step-down operation, programmable current limit, and an auxiliary gain amplifier in one 8-pin DIP - enabling fewer components, smaller footprint, and greater functional integration in battery-powered instrumentation.
Availability
ADP3000AN is available at Aetrix Electronics and suitable for notebook subsystems, portable medical sensors, hard disk drive actuator circuits, and cellular baseband power requiring stable component supply with long-term industrial availability.
Supply support for ADP3000AN 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 ADP3000AN belongs to Analog Devices' micropower DC-DC controller product line, designed specifically for space- and energy-constrained portable electronics requiring flexible voltage conversion without external power switches.
FAQ
What is the maximum input voltage the ADP3000AN supports in step-down mode?
The ADP3000AN supports up to 30 V input in step-down mode, with absolute maximum rating of 36 V. This allows direct connection to 24 V industrial rails or 28 V avionics buses when used with appropriate input filtering and derating. The device maintains regulation and current limiting integrity across this full range, as verified in Table 2 (Absolute Maximum Ratings) and Figure 11 (Quiescent Current vs. Input Voltage) of the Rev. A datasheet.
Can the ADP3000AN be used to generate a negative output voltage?
Yes, the ADP3000AN can generate negative outputs - Figure 33 shows a verified −5 V / 100 mA inverter configuration using the ADP3000-5V variant. In this topology, SW1 drives the inductor to ground during switch-on, and the polarity-reversed output capacitor delivers negative voltage. The ADP3000AN's dual-switch architecture and external diode support make this possible without additional ICs.
Does the ADP3000AN require external compensation components for loop stability?
No, the ADP3000AN does not require external compensation components. Its comparator hysteresis (8–12.5 mV) provides inherent loop stability across all operating conditions, as explicitly stated in the Theory of Operation section (Page 9). This eliminates the need for external RC networks, simplifying design and improving reliability in production.
What package type is used for the ADP3000AN part number?
The ADP3000AN uses an 8-lead plastic DIP (dual in-line package), designated N-8 per JEDEC MO-095AA. This is confirmed in the Ordering Guide (Page 16), Pin Configurations section (Figure 4), and Outline Dimensions (Figure 36). The "AN" suffix specifically denotes the PDIP package variant, distinct from SOIC (R-8) or TSSOP (RU-14) versions.
How is the low-battery detection function implemented on the ADP3000AN?
The ADP3000AN implements low-battery detection using its auxiliary gain block: the SET pin serves as the non-inverting input referenced to the internal 1.245 V bandgap, and the AO pin provides an open-collector output that sinks ≥300 µA when the SET voltage drops below threshold. As shown in Figure 25, a resistor divider from VIN to GND sets the trip point - e.g., R1 = 100 kΩ and R2 = 33 kΩ yields ~2.5 V detection, enabling processor wake-up or controlled shutdown.
ADP3000AN Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- -
- Packaging:
- Tube
- Product Status:
- Obsolete
- Function:
- -
- Output Configuration:
- -
- Topology:
- -
- 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):
- -
- Voltage - Output (Max):
- -
- Current - Output:
- -
- Frequency - Switching:
- -
- Synchronous Rectifier:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
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- Supplier Device Package:
- -
ADP3000AN FAQ
1.How can I place an order for ADP3000AN through Aetrix?
Please submit a Request for Quotation (RFQ) for ADP3000AN 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 reliable?
The price and inventory of ADP3000AN are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADP3000AN is usually 5 days.
3.What payment methods are accepted for ADP3000AN?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADP3000AN transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADP3000AN?
ADP3000AN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADP3000AN 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?
For technical support, including ADP3000AN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADP3000AN requirements.
6.How does Aetrix verify that ADP3000AN is sourced from the original manufacturer or authorized distributors?
All ADP3000AN 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 meets industry standards.
7.What is the process for return or replacement of ADP3000AN?
All ADP3000AN units undergo pre-shipment inspection (PSI). If there is an issue with ADP3000AN, 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 part is unused and in its original packaging.
Return procedure for ADP3000AN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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