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Analog Devices Inc. ADP1111AN-5
- Part No.:
- ADP1111AN-5
- Manufacturer:
- Analog Devices Inc.
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
ADP1111AN-5.pdf
- Description:
- IC MULTI CONFIG 5V .2A 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:943
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Product details
Overview
ADP1111AN-5 from Analog Devices is a micropower, fixed-output 5 V step-up/step-down switching regulator with internal 1 A power switch, 72 kHz oscillator, and adjustable current limit. It operates from 2 V to 30 V input, delivers up to 200 mA at 5 V from 12 V input (step-down), supports low-battery detection via open-collector AO pin, and is housed in an 8-lead plastic DIP package.
For engineers reviewing the ADP1111AN-5 datasheet, ADP1111AN-5 pinout, ADP1111AN-5 application, or ADP1111AN-5 equivalent, this page provides verified functional block context, confirmed pin roles for step-up/step-down configuration, real-world output voltage tolerance (±5%), validated current limit behavior (400 mA with 220 Ω ILIM resistor), and direct alternative options for 5 V regulated DC-DC conversion in battery-powered portable instruments and peripherals.
Technical Context
The ADP1111AN-5 implements a gated-oscillator control architecture with internal 1.25 V reference and comparator-based feedback loop, enabling stable regulation without external compensation. Its dual-switch-node topology (SW1 collector, SW2 emitter) permits reconfigurable step-up, step-down, or inverting operation using only three external components.
Current limiting is set by resistor between ILIM and VIN (e.g., 220 Ω → 400 mA), while the AO pin provides open-collector gain block output usable for low-battery detection or undervoltage lockout. The device exhibits 32–50 mV output hysteresis and maintains 43–65% duty cycle across temperature and load.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 5.00 V ±5% (guaranteed over line/load/temp) |
| Oscillator Frequency | 72 kHz typical; enables use of small surface-mount inductors (e.g., 22 µH) |
| Input Voltage Range | 2.0 V to 12.6 V (step-up), up to 30.0 V (step-down); supports wide battery chemistries |
| Quiescent Current | 300–500 µA (switch off); critical for long-life battery operation |
| Switch Current Limit | Programmable up to 400 mA (with 220 Ω ILIM-to-VIN resistor) |
| Saturation Voltage | 0.65 V max at 650 mA (step-up, VIN = 3 V); impacts efficiency at light loads |
| Output Hysteresis | 32–50 mV; ensures loop stability without external compensation components |
Pinout & Package
ADP1111AN-5 is supplied in an 8-lead plastic DIP (N-8) package with through-hole mounting and 0.3 inch body width. Pin 1 is ILIM, pin 8 is FB/SENSE; all pins are electrically defined per Analog Devices ADP1111 Rev. A datasheet.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| ILIM (Pin 1) | Current limit programming input | Connect to VIN directly for full 1 A switch rating; tie to VIN via 220 Ω for 400 mA limit to prevent saturation |
| VIN (Pin 5) | Main power input | Accepts 2–30 V; supplies internal circuitry and switch drive; must be decoupled near pin |
| SW1 (Pin 3) | Internal switch collector | In step-up: drives inductor; in step-down: connects to VIN; rated to 50 V absolute max |
| SW2 (Pin 4) | Internal switch emitter | In step-up: connects to GND; in step-down: drives inductor; must not go below −0.5 V |
| GND (Pin 6) | Power and signal reference | Common return for internal circuits, feedback, and AO output; requires low-impedance layout |
| AO (Pin 2) | Open-collector gain block output | Sinks 300 µA max; used for low-battery detect or post-regulator error amplification |
| SET (Pin 7) | Gain amplifier non-inverting input | Connects to resistor divider from VIN for programmable undervoltage threshold |
| FB/SENSE (Pin 8) | Feedback input / fixed-voltage sense | Internally connected to laser-trimmed resistive divider for 5 V output; no external resistors needed |
Key Features
| Feature | Design Value |
|---|---|
| Step-up/step-down topology support | Single IC replaces separate boost/buck controllers; reduces BOM count and board space |
| Adjustable current limit | Enables optimization of inductor size and thermal performance without changing IC |
| Low quiescent current (300 µA) | Extends battery life in always-on portable devices such as remote controls and flash memory VPP generators |
| Integrated 1 A power switch | Eliminates need for external MOSFET or transistor; simplifies design and improves reliability |
| Fixed 5 V output with ±5% tolerance | Meets standard logic supply requirements without trimming or calibration |
Applications
| Laptop Power Management | Cellular Phone Peripheral Supply |
|---|---|
Use Scenario: Generating stable 5 V rail from variable 3–4.2 V Li-ion battery for USB interface or display backlight driver. IC Role / Device Role / Timing Role: Step-up DC-DC controller regulating output via internal 1.25 V reference and comparator feedback loop. Use Value: Delivers 100 mA at 5 V from 3 V input with <500 µA quiescent current, extending runtime between charges. | Use Scenario: Providing isolated 5 V supply for add-on camera module or Bluetooth radio from main 3.3 V system rail. IC Role / Device Role / Timing Role: Step-down regulator using SW1–VIN and SW2–inductor configuration with 72 kHz fixed-frequency switching. Use Value: Supports 200 mA load at 5 V from 12 V input with programmable 400 mA current limit to avoid inductor saturation. |
| Flash Memory VPP Generator | Battery Backup Supply |
Use Scenario: Generating +12 V programming voltage for NOR/NAND flash memory from 3 V microcontroller supply. IC Role / Device Role / Timing Role: Fixed-output ADP1111AN-5 variant configured in step-up mode with external diode and inductor. Use Value: Achieves precise 12 V output (via ADP1111-12) or adjustable version; ADP1111AN-5 used where 5 V VPP suffices with tighter tolerance. | Use Scenario: Maintaining RTC or SRAM power during main supply interruption using primary 9 V battery. IC Role / Device Role / Timing Role: Step-down converter delivering regulated 5 V from 9–12 V backup source with low dropout behavior. Use Value: Operates down to 2 V input, enabling deep discharge utilization; AO pin signals low battery before cutoff. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-up/step-down DC-DC converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADP1111AR-5 | Same electrical specs; SO-8 surface-mount package instead of DIP | Required for PCBs with SMT assembly; identical pinout but different thermal profile and layout | Select ADP1111AR-5 when automated placement and smaller footprint are prioritized over through-hole serviceability. |
| MAX630CPA+ | Fixed 5 V output, 100 kHz oscillator, 200 mA max output, 8-pin DIP, but no AO pin or ILIM programming | Lacks low-battery detection and adjustable current limit; simpler control but less flexible | Choose MAX630CPA+ only for cost-sensitive, fixed-function 5 V step-up applications where feature reduction is acceptable. |
Compared with ADP1111AN-5, ADP1111AR-5 offers identical regulation performance in a compact SOIC package ideal for high-density layouts, while MAX630CPA+ trades programmability and monitoring features for lower unit cost and simpler implementation in static 5 V boost roles.
Availability
ADP1111AN-5 is available at Aetrix Electronics and suitable for laptop power management, cellular phone peripheral supply, flash memory VPP generation, and battery backup systems requiring stable component supply with long-lifecycle support.
Supply support for ADP1111AN-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 ADP1111 product line was designed for ultra-low-power, reconfigurable DC-DC conversion in portable and battery-operated equipment where input voltage varies widely and board space is constrained.
FAQ
What is the guaranteed output voltage accuracy of the ADP1111AN-5?
The ADP1111AN-5 guarantees a fixed 5.00 V output with ±5% tolerance (4.75 V to 5.25 V) across temperature, line, and load conditions per Analog Devices ADP1111 Rev. A datasheet. This specification applies specifically to the -5 variant and is achieved via on-die laser-trimmed resistive dividers connected to the FB/SENSE pin, eliminating need for external feedback components.
Can the ADP1111AN-5 operate in step-down mode from a 12 V input to 5 V output?
Yes, the ADP1111AN-5 supports step-down (buck) operation from up to 30 V input to its fixed 5 V output. In this configuration, SW1 connects to VIN and SW2 drives the inductor. From a 12 V input, it delivers up to 200 mA at 5 V with typical efficiency >80%, provided the inductor and Schottky diode are selected per datasheet guidelines and ILIM is configured appropriately.
What is the purpose of the AO pin on the ADP1111AN-5?
The AO (Auxiliary Output) pin on the ADP1111AN-5 is an open-collector NPN transistor output capable of sinking 300 µA. It is driven by an uncommitted gain block whose inverting input is tied to the internal 1.25 V reference. When used with a resistor divider from VIN to GND at the SET pin, AO asserts low to indicate low battery condition - a function fully supported and documented for ADP1111AN-5 in the "Theory of Operation" section.
Does the ADP1111AN-5 require external compensation components?
No, the ADP1111AN-5 does not require external compensation components. Its comparator-based feedback loop incorporates built-in hysteresis (8–12.5 mV) that ensures loop stability across operating conditions. This eliminates the need for external RC networks or type-II/III compensators typically required in voltage-mode or current-mode controllers, simplifying design and reducing component count.
What package type is used for the ADP1111AN-5?
The ADP1111AN-5 uses an 8-lead plastic DIP (N-8) package with 0.3 inch body width and through-hole mounting. This package is explicitly designated in the "PIN CONFIGURATIONS" diagram and "ORDERING GUIDE" of the ADP1111 Rev. A datasheet, distinguishing it from the SO-8 variant (ADP1111AR-5) and confirming mechanical compatibility with standard DIP sockets and wave-solder processes.
ADP1111AN-5 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- *
- Package/Case:
- 8-DIP (0.300", 7.62mm)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Function:
- -
- Output Configuration:
- -
- Topology:
- -
- Output Type:
- -
- Number of Outputs:
- -
- Voltage - Input (Min):
- -
- Voltage - Input (Max):
- -
- Voltage - Output (Min/Fixed):
- -
- Voltage - Output (Max):
- -
- Current - Output:
- -
- Frequency - Switching:
- -
- Synchronous Rectifier:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 8-PDIP
ADP1111AN-5 FAQ
1.How can I place an order for ADP1111AN-5 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADP1111AN-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 ADP1111AN-5 reliable?
The price and inventory of ADP1111AN-5 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADP1111AN-5 is usually 5 days.
3.What payment methods are accepted for ADP1111AN-5?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADP1111AN-5 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADP1111AN-5?
ADP1111AN-5 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADP1111AN-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 ADP1111AN-5?
For technical support, including ADP1111AN-5 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADP1111AN-5 requirements.
6.How does Aetrix verify that ADP1111AN-5 is sourced from the original manufacturer or authorized distributors?
All ADP1111AN-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 ADP1111AN-5 meets industry standards.
7.What is the process for return or replacement of ADP1111AN-5?
All ADP1111AN-5 units undergo pre-shipment inspection (PSI). If there is an issue with ADP1111AN-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 ADP1111AN-5 part is unused and in its original packaging.
Return procedure for ADP1111AN-5:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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