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Analog Devices Inc. ADP3000AN-12
- Part No.:
- ADP3000AN-12
- Manufacturer:
- Analog Devices Inc.
- Package:
- -
- Datasheet:
-
ADP3000AN-12.pdf
- Description:
- IC REG STEP UP/DWN 12V 8-DIP
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Inventory:6,121
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Product details
Overview
ADP3000AN-12 from Analog Devices is a micropower step-up/step-down switching regulator in 8-lead PDIP (N-8) package, delivering fixed 12 V output with ±5% regulation, operating from 4.5 V to 5.5 V input in boost mode and up to 30 V in buck mode, supporting 50 mA output at 12 V with 400 kHz switching frequency for compact power conversion in portable electronics.
For engineers reviewing the ADP3000AN-12 datasheet, ADP3000AN-12 pinout, ADP3000AN-12 application, or ADP3000AN-12 equivalent, key selection criteria include its dual-mode topology, on-chip current limit programming via ILIM pin, integrated 1.245 V reference, low 500 µA shutdown quiescent current, and compatibility with Schottky diodes and small inductors for space-constrained designs.
Technical Context
The ADP3000AN-12 uses pulse frequency modulation (PFM) with a gated 400 kHz oscillator and internal 1.245 V reference to regulate output voltage via feedback comparator hysteresis. Its dual-collector/emitter switch architecture enables both step-up and step-down operation without external MOSFETs.
It integrates a user-programmable current limit circuit (via ILIM-to-VIN resistor), an auxiliary gain block (SET/AO pins) usable as low-battery detector or error amplifier, and operates with only 500 µA quiescent current in shutdown - critical for battery-powered systems requiring long standby life.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 12 V ±5% (laser-trimmed internal divider; FB pin connected directly to output) |
| Input Range (Boost) | 4.5 V to 5.5 V - supports single-cell Li-ion or dual-cell alkaline input for 12 V generation |
| Input Range (Buck) | 2 V to 30 V - enables wide-input industrial or automotive supply regulation |
| Switching Frequency | 400 kHz typical - allows use of <10 µH inductors and low-ESR tantalum capacitors |
| Quiescent Current | 500 µA shutdown - extends battery life in always-on portable instrumentation |
| Current Limit | Programmable up to 1.5 A via ILIM pin - protects external components during overload or short-circuit |
| Output Current (Boost) | 50 mA at 12 V from 5 V input - verified in Figure 30 with 75% typical efficiency |
Pinout & Package
ADP3000AN-12 is housed in an 8-lead plastic DIP (N-8) package per JEDEC MO-095AA, with 0.300-inch body width and 0.100-inch lead pitch. Thermal resistance θJA = 120°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| ILIM | Current limit programming input | Connect to VIN for max 1.5 A limit; use 220 Ω resistor to VIN for 400 mA limit - prevents inductor saturation |
| VIN | Main power input | Accepts 2–30 V; supplies internal bias and drives ILIM circuit - must be decoupled with ≥33 µF low-ESR capacitor |
| SW1 | Power transistor collector | In boost: connects to inductor/diode; in buck: connects to VIN - handles up to 1.5 A peak current |
| SW2 | Power transistor emitter | In boost: connects to GND; in buck: connects to inductor - must not go >0.4 V below ground |
| FB (SENSE) | Feedback input | Internally tied to laser-trimmed divider for 12 V output - connect directly to regulated output |
| GND | Analog and power ground | Common return for all circuits; requires low-impedance PCB plane to minimize noise coupling |
| SET | Auxiliary amplifier non-inverting input | Optional low-battery detection node - use resistor divider from VIN to set trip point vs. 1.245 V reference |
| A0 | Auxiliary amplifier open-collector output | Sinks ≥300 µA - pull-up required for logic-level alert or enable signal generation |
Key Features
| Feature | Design Value |
|---|---|
| Dual-mode topology | Single IC supports both step-up (boost) and step-down (buck) configurations - eliminates need for separate regulators in multi-rail systems |
| Low-quiescent-current PFM control | 500 µA shutdown current enables >1-year battery life in 10 µA standby applications like pagers or remote sensors |
| Integrated current limit | External resistor sets switch current threshold from 400 mA to 1.5 A - avoids overdesign of magnetics and diodes |
| Laser-trimmed fixed output | ADP3000AN-12 provides 12 V ±5% without external resistors - reduces BOM count and layout complexity |
| On-chip auxiliary gain block | SET/AO pins form configurable comparator - enables system-level undervoltage lockout or battery monitoring without extra op amps |
Applications
| Portable Medical Sensors | Industrial Data Loggers |
|---|---|
Use Scenario: Battery-powered glucose monitor generating 12 V for analog front-end op-amps and ADC reference from 2-cell alkaline input. IC Role / Device Role / Timing Role: Step-up regulator providing stable 12 V rail with minimal quiescent draw between measurements. Use Value: 500 µA shutdown current extends AA battery life to >18 months; 400 kHz switching allows use of 15 µH inductor (SUMIDA CR54-150) fitting 12 mm² PCB area. | Use Scenario: Remote environmental sensor node powered by 24 V industrial bus, requiring isolated 12 V for RS-485 transceiver and local MCU. IC Role / Device Role / Timing Role: Step-down regulator converting 24 V to regulated 12 V with high line regulation (0.02%/V). Use Value: Operates across full 2–30 V input range; 1.245 V internal reference ensures ±5% output accuracy over temperature and load. |
| Handheld Test Equipment | Legacy Instrumentation Upgrades |
Use Scenario: Portable oscilloscope accessory requiring ±12 V rails from single 7.2 V Li-ion pack. IC Role / Device Role / Timing Role: Boost converter generating +12 V; paired with ADP3000AN-12's inverting configuration (Fig. 33) for −12 V. Use Value: Fixed 12 V output eliminates trimming; 400 kHz frequency enables compact 6.8 µH inductor (SUMIDA CR43-6R8) and 100 µF AVX TPS capacitors. | Use Scenario: Retrofitting aging benchtop power supply with modern, low-noise 12 V auxiliary rail for microcontroller supervision. IC Role / Device Role / Timing Role: Buck regulator replacing discrete transistor-based linear supply to improve efficiency and reduce heat. Use Value: Replaces TO-220 linear regulator with 8-pin DIP footprint; achieves 77% efficiency (vs. ~40% linear) at 250 mA, cutting thermal load by >1.5 W. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar switching regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LT1931IS5-12#TRMPBF | Fixed 12 V boost-only topology; 1.2 MHz switching; 1.2 A switch; no buck capability | Only suitable for step-up applications; higher frequency enables smaller passives but increases EMI sensitivity | Choose when board space is critical and input is always <12 V; avoid if buck operation or low EMI is required |
| TPS61040DRVR | Adjustable output (1.8–28 V); 500 kHz; 0.5 A switch; no integrated buck path or SET/AO gain block | Requires external feedback resistors; lacks low-battery detection and dual-mode flexibility | Prefer for cost-sensitive designs needing only boost; select ADP3000AN-12 when buck support or system monitoring is needed |
Compared with LT1931IS5-12#TRMPBF and TPS61040DRVR, ADP3000AN-12 uniquely combines fixed 12 V output, true step-up/step-down capability, and an auxiliary gain block - enabling single-chip solutions for battery-powered instruments requiring both voltage conversion and system health monitoring.
Availability
ADP3000AN-12 is available at Aetrix Electronics and suitable for portable medical sensors, industrial data loggers, handheld test equipment, and legacy instrumentation upgrades requiring stable component supply with long-term lifecycle assurance.
Supply support for ADP3000AN-12 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, serving precision instrumentation, industrial automation, and communications markets since 1965.
The ADP3000 family was designed for ultra-low-power, dual-mode DC/DC conversion in space- and battery-constrained portable electronics - emphasizing micropower operation, minimal external components, and flexible topology support.
FAQ
What is the maximum output current of the ADP3000AN-12 in step-up mode?
The ADP3000AN-12 delivers 50 mA at 12 V from a 4.5–5.5 V input in step-up mode, as validated in Figure 30 of the datasheet. Output current depends on input voltage, inductor selection, and thermal conditions; exceeding 50 mA may reduce efficiency or trigger current limiting if ILIM is set below 1.5 A.
Can the ADP3000AN-12 operate in step-down mode, and what is its input voltage range?
Yes, the ADP3000AN-12 supports step-down operation from 2 V to 30 V input, as specified in Table 1 and General Description. In buck mode, it regulates down to fixed 12 V - for example, converting 24 V industrial bus to 12 V with 77% efficiency at 250 mA (Figure 32).
Does the ADP3000AN-12 require external feedback resistors to set the 12 V output?
No, the ADP3000AN-12 uses laser-trimmed internal resistors to fix the output at 12 V ±5%. The FB (SENSE) pin connects directly to the output - no external resistors are needed, simplifying layout and improving accuracy over temperature.
How is current limiting configured on the ADP3000AN-12?
Current limiting is set by connecting a resistor between ILIM and VIN. A 220 Ω resistor limits peak switch current to 400 mA (Table 1); direct connection to VIN yields 1.5 A maximum. This protects the internal transistor and external inductor during overload or short-circuit events.
What package type is used for the ADP3000AN-12, and what are its thermal characteristics?
The ADP3000AN-12 uses an 8-lead plastic DIP (N-8) package with θJA = 120°C/W. At 50 mA output and 5 V input, power dissipation remains low (<100 mW), resulting in <12°C junction rise above ambient - well within the 0°C to +70°C operating range.
ADP3000AN-12 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:
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- 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:
- -
- Frequency - Switching:
- -
- Synchronous Rectifier:
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- Operating Temperature:
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- Grade:
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- Qualification:
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- Mounting Type:
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- Supplier Device Package:
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ADP3000AN-12 FAQ
1.How can I place an order for ADP3000AN-12 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADP3000AN-12 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-12 reliable?
The price and inventory of ADP3000AN-12 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADP3000AN-12 is usually 5 days.
3.What payment methods are accepted for ADP3000AN-12?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADP3000AN-12 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADP3000AN-12?
ADP3000AN-12 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADP3000AN-12 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-12?
For technical support, including ADP3000AN-12 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADP3000AN-12 requirements.
6.How does Aetrix verify that ADP3000AN-12 is sourced from the original manufacturer or authorized distributors?
All ADP3000AN-12 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-12 meets industry standards.
7.What is the process for return or replacement of ADP3000AN-12?
All ADP3000AN-12 units undergo pre-shipment inspection (PSI). If there is an issue with ADP3000AN-12, 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-12 part is unused and in its original packaging.
Return procedure for ADP3000AN-12:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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