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Analog Devices Inc. ADP1073AR-5
- Part No.:
- ADP1073AR-5
- Manufacturer:
- Analog Devices Inc.
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
ADP1073AR-5.pdf
- Description:
- IC REG BUCK BOOST 5V 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:6,857
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Product details
Overview
ADP1073AR-5 from Analog Devices is a micropower step-up/step-down DC–DC converter IC with fixed 5 V output, internal 1 A power switch, and operation down to 1.0 V input. It delivers 40 mA at 5 V from 1.25 V input or 10 mA from 1.0 V input, enabling single-cell battery-powered instrumentation and portable devices.
For engineers reviewing the ADP1073AR-5 datasheet, ADP1073AR-5 pinout, ADP1073AR-5 application, or ADP1073AR-5 equivalent, key selection criteria include its 100 µA quiescent current in step-up mode, 4.75–5.25 V output regulation, 14–24 kHz oscillator frequency, and SO-8 package compatibility with space-constrained low-power designs.
Technical Context
The ADP1073AR-5 uses a gated-oscillator control architecture with an internal 212 mV reference and comparator hysteresis (125–250 mV) to regulate output voltage without external compensation. Its dual-mode topology supports both boost (SW2 grounded, SW1 driving inductor) and buck (SW1 tied to VIN, SW2 driving inductor) configurations via external component routing.
It integrates an auxiliary gain amplifier (A2) with 400–1000 V/V gain for low-battery detection or linear post-regulation, and features user-adjustable current limiting via an external resistor between ILIM and VIN - delivering 400 mA limit with 220 Ω - while maintaining 100 µA quiescent current when output is regulated.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 5.00 V ±2.5%, guaranteed over temperature and line/load conditions |
| 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 typical in step-up mode at no load - enables multi-year battery life in intermittent-use systems |
| Oscillator Frequency | 14–24 kHz typical - balances efficiency, EMI, and inductor size for low-power conversion |
| Switch Current Limit | 400 mA with 220 Ω ILIM-to-VIN resistor - protects internal 1 A bipolar switch during overload |
| Output Ripple | Typically 125 mV peak-to-peak at 5 V output - reduced further using gain-block feedback |
| Package | SO-8 surface-mount - 5.0 mm × 6.2 mm footprint, compatible with automated assembly |
Pinout & Package
ADP1073AR-5 is housed in an 8-lead Small Outline (SO-8) package with standard JEDEC MS-012AC dimensions and gull-wing leads. Pin 1 is marked by a notch or dot; thermal pad is not present.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (ILIM) | Current limit programming input | Connect to VIN directly for full 1 A switch capability; add 220 Ω resistor to VIN to set 400 mA limit |
| 2 (VIN) | Main power input | Accepts 1.0–30 V; supplies internal circuitry and switch base drive |
| 3 (SW1) | Power switch collector | In boost mode: connects to inductor; in buck mode: ties to VIN |
| 4 (SW2) | Power switch emitter | In boost mode: connects to GND; in buck mode: drives inductor - must not drop >0.4 V below ground |
| 5 (GND) | Analog and power ground | Common reference for feedback, reference, and oscillator - requires low-impedance PCB connection |
| 6 (AO) | Auxiliary amplifier open-collector output | Sinks 100 µA max; used for low-battery flag or linear regulator control |
| 7 (SET) | Auxiliary amplifier non-inverting input | Accepts resistor divider from VIN to GND to set low-battery threshold referenced to 212 mV |
| 8 (FB/SENSE) | Feedback input / voltage sense | Internally connected to laser-trimmed resistive divider for fixed 5 V output - connect directly to regulated output |
Key Features
| Feature | Design Value |
|---|---|
| Single-cell operation | Starts and regulates from 1.0 V input - supports alkaline, NiMH, and LiFePO₄ primary/secondary cells without pre-bias |
| Mode flexibility | Same IC supports boost, buck, and inverting topologies via external component reconfiguration - reduces BOM count |
| Integrated low-battery detector | Auxiliary gain amplifier (A2) with 212 mV reference enables programmable undervoltage warning without external comparators |
| Minimal external parts | Only inductor, diode, and output capacitor required for basic 5 V boost - eliminates need for external error amp or compensation network |
| Robust switch protection | Internal current limiting with 2 µs response delay and reverse-battery tolerance to –0.4 V on SW2 - enhances field reliability |
Applications
| Hand-Held Inventory Computers | 4 mA–20 mA Loop Powered Instruments |
|---|---|
Use Scenario: Portable barcode scanners powered by AA/AAA batteries requiring stable 5 V rail for microcontroller and imager. IC Role / Device Role / Timing Role: Primary DC–DC converter providing regulated 5 V output from 1.0–1.5 V single-cell input in boost configuration. Use Value: 100 µA quiescent current extends battery life beyond 2 years in sleep-dominated operation; 40 mA output supports active scanning bursts. | Use Scenario: Field-mounted sensor transmitters drawing power from industrial 4–20 mA current loops with limited headroom. IC Role / Device Role / Timing Role: Step-down regulator generating local 5 V supply from loop-derived ~12–30 V input. Use Value: Supports operation down to 12 V input while maintaining tight 5 V regulation - enables use in low-headroom loop configurations. |
| Laptop and Palmtop Computers | Battery Backup Supplies |
Use Scenario: Auxiliary 5 V rail for real-time clock (RTC), SRAM, or secure element in legacy portable computing platforms. IC Role / Device Role / Timing Role: Low-quiescent backup converter activated when main supply fails, sustaining critical functions from coin cell. Use Value: Delivers 10 mA at 5 V from 1.0 V input - ensures RTC accuracy and data retention during extended main-power outages. | Use Scenario: Non-volatile memory backup in telecom infrastructure equipment where main 5 V rail may fail unexpectedly. IC Role / Device Role / Timing Role: Standby DC–DC controller that activates only when main supply drops below threshold, minimizing self-discharge. Use Value: 100 µA IQ prevents measurable drain on backup lithium battery over multi-year service intervals. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar micropower DC–DC converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX630ESA+ | Fixed 5 V output, 1.5 V min input, 120 µA IQ, SO-8 package - lacks adjustable current limit and auxiliary amplifier | Designed for simpler boost-only applications; no buck/inverting support | Choose for cost-sensitive, single-topology designs where AO functionality is unnecessary |
| TPS61200DRCR | Adjustable 1.8–5.5 V output, 0.3 V min input, 50 µA IQ, 6-pin WSON - no integrated current limit or AO pin | Optimized for ultra-low-input, high-efficiency boost; lacks dual-mode flexibility | Prefer when sub-1 V start-up or minimal footprint is critical, and fixed 5 V is not mandatory |
Compared with MAX630ESA+ and TPS61200DRCR, the ADP1073AR-5 uniquely combines fixed 5 V output, true dual-mode topology, on-chip current limiting, and auxiliary amplifier functionality in a standard SO-8 package - making it optimal for space-constrained, multi-function portable systems requiring long battery life and design flexibility.
Availability
ADP1073AR-5 is available at Aetrix Electronics and suitable for hand-held inventory computers, 4 mA–20 mA loop powered instruments, laptop/palmtop auxiliary rails, battery backup supplies, and portable instrumentation requiring stable component supply across extended production lifecycles.
Supply support for ADP1073AR-5 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 specifically for ultra-low-input-voltage, micropower DC–DC conversion in battery-critical portable and industrial instrumentation - emphasizing simplicity, longevity, and topology flexibility over raw efficiency.
FAQ
What is the minimum input voltage required for ADP1073AR-5 to start regulating 5 V output?
The ADP1073AR-5 starts regulating 5 V output from a minimum input voltage of 1.0 V in step-up mode, as confirmed in the Absolute Maximum Ratings and General Description sections of the datasheet. At 1.0 V input, it delivers 10 mA at 5 V; performance improves to 40 mA at 1.25 V input. This capability enables direct operation from single alkaline, NiMH, or LiFePO₄ cells without intermediate boosting stages.
Can ADP1073AR-5 be used in step-down (buck) configuration, and what are the key layout considerations?
Yes, ADP1073AR-5 supports step-down operation by connecting SW1 to VIN and SW2 to the inductor - as shown in Figure 16 of the datasheet. Key layout considerations include keeping the SW2-to-inductor path short to minimize switching noise, using a low-ESR output capacitor near the FB pin, and ensuring GND connections for VIN, SW2, and FB share a low-impedance plane to avoid regulation errors caused by ground bounce.
Does ADP1073AR-5 require external compensation components for stability?
No, ADP1073AR-5 does not require external compensation components. Its gated-oscillator architecture with built-in comparator hysteresis (125–250 mV for the -5 version) ensures inherent loop stability across all operating conditions. The datasheet explicitly states "loop stability without requiring external components for frequency compensation" in the Theory of Operation section.
How is the 5 V output accuracy maintained across temperature and input voltage variations?
The ADP1073AR-5 maintains 5 V output accuracy via an internal laser-trimmed resistive divider referenced to a precision 212 mV bandgap. Output voltage is specified as 4.75–5.25 V (±2.5%) over 0°C to +70°C and full input range, with line regulation of 0.05–0.15 %/V above 1.5 V input. This trimming eliminates drift-related calibration in end equipment.
What is the purpose of the AO pin on ADP1073AR-5, and how is it typically used?
The AO pin on ADP1073AR-5 is an open-collector NPN output of the auxiliary gain amplifier (A2), capable of sinking 100 µA. It is commonly used to implement a low-battery detector by connecting a resistor divider from VIN to GND with the junction at the SET pin - causing AO to go low when input voltage falls below a user-defined threshold referenced to the internal 212 mV reference.
ADP1073AR-5 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- ADP1073
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- 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):
- 5V
- Voltage - Output (Max):
- -
- Current - Output:
- -
- Frequency - Switching:
- 19kHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
ADP1073AR-5 FAQ
1.How can I place an order for ADP1073AR-5 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADP1073AR-5 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 ADP1073AR-5 reliable?
The price and inventory of ADP1073AR-5 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADP1073AR-5 is usually 5 days.
3.What payment methods are accepted for ADP1073AR-5?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADP1073AR-5 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADP1073AR-5?
ADP1073AR-5 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADP1073AR-5 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 ADP1073AR-5?
For technical support, including ADP1073AR-5 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADP1073AR-5 requirements.
6.How does Aetrix verify that ADP1073AR-5 is sourced from the original manufacturer or authorized distributors?
All ADP1073AR-5 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 ADP1073AR-5 meets industry standards.
7.What is the process for return or replacement of ADP1073AR-5?
All ADP1073AR-5 units undergo pre-shipment inspection (PSI). If there is an issue with ADP1073AR-5, 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 ADP1073AR-5 part is unused and in its original packaging.
Return procedure for ADP1073AR-5:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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