My Inquiry
My Account
Analog Devices Inc. ADP1073AN-12
- Part No.:
- ADP1073AN-12
- Manufacturer:
- Analog Devices Inc.
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
ADP1073AN-12.pdf
- Description:
- IC REG BUCK BOOST 12V 8PDIP
- Quantity:
- Payment:
- Shipping:
Inventory:3,185
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
ADP1073AN-12 from Analog Devices is a micropower step-up/step-down switching regulator IC with fixed 12 V output, internal 1 A power switch, 1.0 V to 30 V input range, and 100 µA quiescent current at +25°C. It operates in boost mode from single-cell batteries and delivers up to 10 mA at 12 V from 1.0 V input for low-power portable instrumentation.
For engineers reviewing the ADP1073AN-12 datasheet, ADP1073AN-12 pinout, ADP1073AN-12 application, or ADP1073AN-12 equivalent, key selection considerations include its 12 V fixed output accuracy (±5%), 19 kHz gated-oscillator frequency, 8-pin DIP package, internal current limit via ILIM pin, and compatibility with low-battery detection using the AO auxiliary amplifier.
Technical Context
The ADP1073AN-12 uses a gated-oscillator control architecture with an internal 212 mV reference and comparator hysteresis (300–600 mV) to regulate output voltage without external compensation. Its dual-mode topology supports both step-up (boost) and step-down (buck) configurations by reassigning SW1 (collector) and SW2 (emitter) connections.
It integrates an uncommitted gain block (A2) with 400–1000 V/V gain, enabling low-battery detection or linear post-regulation via the SET and AO pins. The internal 1 A bipolar power switch exhibits 700–1500 mV saturation voltage at 1 A and 5 V input, with duty cycle adjustable from 57% to 80% under full load.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 12.00 V ±5% (guaranteed 11.4–12.6 V over temp) |
| Input Voltage Range | 1.0 V to 12.6 V in step-up mode; up to 30 V in step-down mode |
| Quiescent Current | 100 µA at +25°C, enabling >1-year battery life in 10 µA-load systems |
| Oscillator Frequency | 14–24 kHz typical (19 kHz nominal), defining switching period and ripple spectrum |
| Switch Saturation Voltage | 700–1000 mV at 1 A and 5 V input, directly impacting conduction loss and thermal rise |
| Feedback Reference | Internal 212 mV comparator threshold with 5–10 mV hysteresis for loop stability |
| Current Limit | 400 mA with 220 Ω resistor between ILIM and VIN; adjustable via external resistor |
Pinout & Package
ADP1073AN-12 is housed in an 8-lead plastic DIP (N-8) package with 0.3 inch body width and through-hole mounting. Pin spacing is 0.1 inch, compatible with standard DIP sockets and wave-solder processes.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - ILIM | Current limit programming input | Connect to VIN for default 1.5 A switch limit; add resistor to VIN to reduce max switch current to 400 mA |
| 2 - VIN | Main power input | Accepts 1.0–30 V; supplies internal circuitry and switch driver; reverse-battery protected to –0.4 V |
| 3 - SW1 | Power switch collector | In boost mode: connects to inductor/diode; in buck mode: connects to VIN |
| 4 - SW2 | Power switch emitter | In boost mode: connects to GND; in buck mode: connects to inductor; must not drop >0.4 V below GND |
| 5 - GND | Analog and power ground | Common reference for feedback, reference, and oscillator; requires low-impedance PCB connection |
| 6 - AO | Auxiliary gain amplifier output | Open-collector NPN capable of sinking 100 µA; used for low-battery flag or linear regulation |
| 7 - SET | Gain block non-inverting input | Accepts resistor divider from VIN to set low-battery threshold; bias current 100–220 nA |
| 8 - FB/SENSE | Feedback input / fixed-voltage sense | Directly connected to internal laser-trimmed resistors for 12 V output; no external divider needed |
Key Features
| Feature | Design Value |
|---|---|
| Single-cell operation down to 1.0 V | Enables direct use of alkaline, NiCd, or Li-ion cells without pre-regulation |
| Integrated 1 A bipolar power switch | Eliminates need for external MOSFET or transistor, reducing BOM count and layout area |
| Fixed 12 V output with ±5% tolerance | Laser-trimmed on-chip resistors ensure accuracy without external components or calibration |
| Gated-oscillator control | Switches only when output droops below setpoint, achieving 100 µA quiescent current in idle state |
| Configurable step-up or step-down topology | SW1/SW2 pin access allows flexible converter design without changing IC |
Applications
| Portable Instrument Power | Battery Backup Supply |
|---|---|
Use Scenario: Powering handheld multimeters or gas detectors from two AA cells (1.0–3.0 V). IC Role / Device Role / Timing Role: Step-up DC–DC controller generating stable 12 V for op-amp rails and sensor excitation. Use Value: Delivers 10 mA at 12 V from 1.0 V input with 100 µA quiescent current, extending battery life beyond 12 months. | Use Scenario: Maintaining real-time clock and SRAM during main power failure in industrial controllers. IC Role / Device Role / Timing Role: Low-quiescent step-down regulator converting 24 V system rail to 12 V backup supply. Use Value: Operates down to 1.0 V input, ensuring regulation even as backup supercapacitor discharges to end-of-life voltage. |
| 4–20 mA Loop Instruments | Pager and Palmtop Logic Supply |
Use Scenario: Providing isolated 12 V bias for HART modem circuitry in field transmitters. IC Role / Device Role / Timing Role: Fixed-output boost converter powered from 4–20 mA loop with minimal headroom. Use Value: Regulates 12 V output across full 1.0–30 V input range, supporting operation even at lowest loop compliance voltage. | Use Scenario: Generating 12 V for LCD backlight drivers in legacy pagers with single-cell primary battery. IC Role / Device Role / Timing Role: Micropower step-up controller with integrated switch and low-battery detection via AO pin. Use Value: Combines 12 V generation and battery monitoring in one 8-pin DIP, reducing board space and component count. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar switching regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADP1073AR-12 | Same electrical specs; SO-8 surface-mount package instead of DIP | Requires rework of PCB layout for SMT assembly; no through-hole option | Select for automated production or space-constrained designs where DIP footprint is unacceptable |
| MAX630CPA+ | Fixed 12 V output; 1.5 V min input; 120 µA quiescent current; no AO pin or ILIM adjust | Lacks auxiliary amplifier and programmable current limit; limited to boost-only topology | Choose when only basic 12 V boost functionality is needed and design simplicity outweighs feature flexibility |
Compared with ADP1073AN-12, ADP1073AR-12 offers identical performance in a smaller SO-8 package but requires SMT assembly, while MAX630CPA+ provides simpler 12 V boost conversion without current limiting or low-battery detection-making it suitable only for cost-sensitive, fixed-topology applications.
Availability
ADP1073AN-12 is available at Aetrix Electronics and suitable for portable instrumentation, battery backup supplies, 4–20 mA loop-powered devices, and pager logic supplies requiring stable component supply with long-term lifecycle support.
Supply support for ADP1073AN-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, headquartered in Norwood, MA.
The ADP1073 family was designed for ultra-low-power, multi-topology DC–DC conversion in battery-operated portable equipment where input voltage can fall below the required output.
FAQ
What is the guaranteed output voltage tolerance for ADP1073AN-12?
The ADP1073AN-12 guarantees a 12.00 V output within ±5% over temperature and line conditions, corresponding to a validated range of 11.4 V to 12.6 V per the datasheet's "OUTPUT SENSE VOLTAGE" specification table. This tolerance is achieved via on-die laser-trimmed resistors and applies specifically to the ADP1073AN-12 variant-not the adjustable ADP1073 or other fixed versions. No external components are required to achieve this accuracy.
Can ADP1073AN-12 operate in step-down (buck) mode?
Yes, ADP1073AN-12 supports step-down operation with input voltages up to 30 V. In buck mode, SW1 connects to VIN and SW2 drives the inductor, enabling regulated 12 V output from higher input sources such as 24 V industrial rails. The datasheet confirms step-down capability in the "MODE CONFIGURATION" section and Figure 16, and specifies 30 V absolute maximum input rating for this configuration. Output current capability depends on thermal design and inductor selection.
What is the purpose of the AO pin on ADP1073AN-12?
The AO pin on ADP1073AN-12 is an open-collector NPN output of the auxiliary gain amplifier (A2), capable of sinking 100 µA. It is used for low-battery detection by connecting a resistor divider from VIN to SET, causing AO to go low when input voltage drops below a user-defined threshold. Unlike the main regulator, AO remains functional even when the ADP1073AN-12 is idle, making it ideal for system-level power monitoring without additional ICs.
How does the ILIM pin function on ADP1073AN-12?
The ILIM pin on ADP1073AN-12 sets the maximum switch current by connecting an external resistor between ILIM and VIN. With no resistor (ILIM tied directly to VIN), the internal switch supports up to 1.5 A peak current. Adding a 220 Ω resistor limits peak current to 400 mA, improving efficiency and thermal margin in low-power applications. This adjustment is confirmed in the "CURRENT LIMIT" specification and "Limiting the Switch Current" section of the ADP1073AN-12 datasheet.
What package type is used for ADP1073AN-12?
ADP1073AN-12 uses an 8-lead plastic DIP (N-8) package with 0.3 inch body width and 0.1 inch lead pitch, as specified in the Ordering Guide and Pin Configurations diagram. This through-hole package supports manual prototyping, socket-based testing, and wave soldering in low-volume production. It is distinct from the SO-8 variant (ADP1073AR-12) and shares pinout compatibility with other ADP1073 family members in the same package type.
ADP1073AN-12 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- ADP1073
- Package/Case:
- 8-DIP (0.300", 7.62mm)
- Packaging:
- Bulk
- Product Status:
- Active
- Function:
- Step-Up/Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck-Boost
- Output Type:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 1V
- Voltage - Input (Max):
- 30V
- Voltage - Output (Min/Fixed):
- 12V
- Voltage - Output (Max):
- -
- Current - Output:
- -
- Frequency - Switching:
- 19kHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 8-PDIP
ADP1073AN-12 FAQ
1.How can I place an order for ADP1073AN-12 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADP1073AN-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 ADP1073AN-12 reliable?
The price and inventory of ADP1073AN-12 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADP1073AN-12 is usually 5 days.
3.What payment methods are accepted for ADP1073AN-12?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADP1073AN-12 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADP1073AN-12?
ADP1073AN-12 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADP1073AN-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 ADP1073AN-12?
For technical support, including ADP1073AN-12 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADP1073AN-12 requirements.
6.How does Aetrix verify that ADP1073AN-12 is sourced from the original manufacturer or authorized distributors?
All ADP1073AN-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 ADP1073AN-12 meets industry standards.
7.What is the process for return or replacement of ADP1073AN-12?
All ADP1073AN-12 units undergo pre-shipment inspection (PSI). If there is an issue with ADP1073AN-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 ADP1073AN-12 part is unused and in its original packaging.
Return procedure for ADP1073AN-12:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ADP1073AN-12 Tags
-
TPS562201DDCR
Texas Instruments
-
MC34063ABD-TR
STMicroelectronics
-
TPS561201DDCR
Texas Instruments
-
MC33063ADR
Texas Instruments
-
MC34063ADR
Texas Instruments
-
TPS560200DBVR
Texas Instruments
-
AP3012KTR-G1
Diodes Incorporated
-
TLV61048DBVR
Texas Instruments
-
AZ34063UMTR-G1
Diodes Incorporated
-
TPS562200DDCR
Texas Instruments
-
AP62300TWU-7
Diodes Incorporated
-
MC34063EBD-TR
STMicroelectronics
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
