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Analog Devices Inc. ADP1111ARZ-5
- Part No.:
- ADP1111ARZ-5
- Manufacturer:
- Analog Devices Inc.
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
ADP1111ARZ-5.pdf
- Description:
- IC REG BUCK BOOST 5V 400MA 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,256
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Product details
Overview
ADP1111ARZ-5 from Analog Devices is a micropower step-up/step-down switching regulator with fixed 5 V output, internal 1 A power switch, 72 kHz oscillator, and operation from 2 V to 30 V input. It delivers up to 200 mA at 5 V from 12 V input in step-down mode or 100 mA at 5 V from 3 V in step-up mode, used in battery-powered peripherals and flash memory VPP generation.
For engineers reviewing the ADP1111ARZ-5 datasheet, ADP1111ARZ-5 pinout, ADP1111ARZ-5 application, or ADP1111ARZ-5 equivalent, key selection criteria include input voltage range (2–30 V), fixed 5 V output tolerance (±5%), programmable current limit, low quiescent current (300–500 μA), and SO-8 package compatibility with DIP footprint.
Technical Context
The ADP1111ARZ-5 implements a gated-oscillator control architecture with internal 1.25 V reference and comparator-based regulation. Its dual-mode topology supports step-up (boost), step-down (buck), and inverting configurations using externally accessible SW1 (collector) and SW2 (emitter) terminals of the integrated bipolar power switch.
Current limiting is set via resistor between ILIM and VIN, with 220 Ω yielding 400 mA typical limit. The open-collector AO gain block enables low-battery detection or undervoltage lockout by comparing a resistor divider on SET against the internal 1.25 V reference.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 5.00 V ±5% - guaranteed across load, line, and temperature per spec table |
| Input Voltage Range | 2.0 V to 30.0 V - supports wide battery chemistries (alkaline, NiCd, Li-ion) in both step-up and step-down modes |
| Oscillator Frequency | 72 kHz typ (54–88 kHz) - enables use of small surface-mount inductors without EMI concerns |
| Quiescent Current | 300–500 μA - ensures micropower operation critical for battery backup and remote controls |
| Switch Current Limit | 400 mA typ with 220 Ω ILIM-to-VIN resistor - protects external components and prevents inductor saturation |
| Output Hysteresis | 32–50 mV - provides stable regulation without external compensation components |
| Operating Temperature | 0°C to +70°C - qualified for commercial-grade embedded and portable instrument applications |
Pinout & Package
ADP1111ARZ-5 is housed in an 8-lead SOIC (SO-8) package, pin-compatible with the 8-lead plastic DIP (N-8) variant. Thermal performance and PCB layout are optimized for surface-mount assembly with standard reflow profiles.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 ILIM | Current limit programming input | Connect to VIN directly or via resistor (e.g., 220 Ω) to set 400 mA max switch current |
| 2 SW1 | Collector of internal power switch | In step-up: connects to inductor/diode; in step-down: connects to VIN |
| 3 GND | Power and signal ground reference | Low-impedance return path for switch current and feedback network |
| 4 SW2 | Emitter of internal power switch | In step-up: connects to GND; in step-down: drives inductor - must not go < −0.5 V |
| 5 VIN | Main power supply input | Accepts 2–30 V; powers internal circuitry and supplies switch base drive |
| 6 AO | Open-collector gain block output | Sinks 300 μA; used for low-battery detection or post-regulator error amplification |
| 7 SET | Non-inverting input of gain block | Accepts resistor divider from VIN to GND; sets trip point relative to 1.25 V reference |
| 8 FB/SENSE | Feedback input for output regulation | Internally connected to laser-trimmed resistive divider for fixed 5 V output - connect directly to VOUT |
Key Features
| Feature | Design Value |
|---|---|
| Step-up/step-down/inverting topology support | Single IC replaces multiple regulators - reduces BOM count and board space in multi-rail portable systems |
| User-adjustable current limit | Resistor-programmable protection avoids overdesign of magnetics and diodes while maintaining efficiency |
| Low-battery detector via AO/SET pins | Enables system-level power management without external comparators or voltage references |
| 72 kHz fixed-frequency operation | Eliminates need for external timing components and simplifies EMI filtering vs. variable-frequency controllers |
| Micropower quiescent current (300 μA) | Extends battery life in always-on remote controls and backup supplies where standby current dominates lifetime |
Applications
| Portable Instrument Power | Laptop Peripheral Supply |
|---|---|
Use Scenario: Generating stable 5 V rail from varying alkaline or NiMH battery stacks (3–12 V) in handheld multimeters and data loggers. IC Role / Device Role / Timing Role: Step-down regulator delivering 200 mA at 5 V from 12 V input; uses SW1–VIN and SW2–inductor configuration. Use Value: Eliminates need for linear regulators with high dropout, reducing thermal load and extending battery runtime by >40% vs. LDO solutions. | Use Scenario: Providing isolated 5 V for USB-connected add-on cards or docking station modules powered from laptop main battery (11–16 V). IC Role / Device Role / Timing Role: Step-down converter operating at 72 kHz with fixed 5 V output; leverages internal 1 A switch and low quiescent current. Use Value: Enables compact, low-noise DC/DC stage without external MOSFET drivers or complex compensation networks. |
| Flash Memory VPP Generator | Remote Control Power Management |
Use Scenario: Generating +12 V programming voltage for NOR/NAND flash memory from a 3 V coin cell or single Li-ion cell. IC Role / Device Role / Timing Role: Step-up converter with ADP1111ARZ-5 configured in boost mode (SW2→GND, SW1→inductor); uses internal 1 A switch. Use Value: Delivers regulated 12 V at 40 mA with <50 mV ripple - meets JEDEC VPP tolerance requirements without external LDO post-regulation. | Use Scenario: Maintaining 5 V logic supply during deep sleep in IR remote controls powered by two AA cells (1.8–3.2 V range). IC Role / Device Role / Timing Role: Step-up regulator operating down to 2 V input; uses AO/SET for low-battery flag at 2.2 V threshold. Use Value: Reduces average system current to <1 μA in shutdown mode via AO-driven enable logic - extends shelf life beyond 2 years. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar switching regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADP1111ARZ-3.3 | Fixed 3.3 V output; identical pinout, package, and functional blocks | Used where 3.3 V logic rail required instead of 5 V; same step-up/down capability and current limit scheme | Select when system requires 3.3 V output and shares identical board layout and external component values |
| ADP1111ARZ-12 | Fixed 12 V output; same SO-8 package, oscillator frequency, and ILIM programming interface | Targeted at flash memory VPP, LCD bias, or op-amp supplies requiring higher voltage; higher output hysteresis (75–120 mV) | Choose for 12 V generation where ADP1111ARZ-5's 5 V output is insufficient; verify inductor saturation margin at higher VOUT |
Compared with ADP1111ARZ-3.3 and ADP1111ARZ-12, the ADP1111ARZ-5 offers optimal efficiency in mid-range voltage conversion (e.g., 9 V → 5 V, 3 V → 5 V), with tighter output tolerance (±5%) and lower hysteresis than the 12 V variant - making it preferred for logic-supply-critical applications.
Availability
ADP1111ARZ-5 is available at Aetrix Electronics and suitable for portable instruments, laptop peripherals, flash memory VPP generation, and remote control power management requiring stable component supply across extended production lifecycles.
Supply support for ADP1111ARZ-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, multi-topology DC/DC conversion in space-constrained portable and battery-backed systems - emphasizing simplicity, minimal external components, and wide input voltage flexibility.
FAQ
What is the maximum output current capability of the ADP1111ARZ-5 in step-down mode?
The ADP1111ARZ-5 delivers up to 200 mA at 5 V from a 12 V input in step-down mode, as specified in the General Description. This assumes proper inductor selection (e.g., 56–68 μH, ≥650 mA saturation current) and thermal derating within the 0°C to +70°C operating range. Peak switch current is limited to 1.5 A absolute maximum, but practical design targets ≤650 mA in buck mode for reliability.
Can the ADP1111ARZ-5 be used in step-up mode with a 3 V input to generate 5 V?
Yes, the ADP1111ARZ-5 is explicitly rated to deliver 100 mA at 5 V from a 3 V input in step-up mode. The datasheet confirms this in the General Description and Typical Application (Figure 1). Use SW2 grounded, SW1 connected to inductor, and ensure Schottky diode (e.g., MBRS120T3) and low-ESR output capacitor (≥33 μF) are selected per design guidelines.
What is the purpose of the AO and SET pins on the ADP1111ARZ-5?
The AO (open-collector output) and SET (non-inverting input) pins form an uncommitted gain block referenced to the internal 1.25 V reference. When a resistor divider from VIN to GND is connected to SET, AO asserts low upon crossing the programmed threshold - enabling low-battery detection, undervoltage lockout, or error amplification without external components. AO sinks up to 300 μA.
Does the ADP1111ARZ-5 require external compensation components?
No, the ADP1111ARZ-5 does not require external compensation. Its comparator-based control loop incorporates built-in hysteresis (8–12.5 mV) that ensures stability across all operating conditions. The datasheet states "loop stability without requiring external components for frequency compensation" - verified across input voltage, load, and temperature ranges.
What package type is used for the ADP1111ARZ-5, and is it RoHS compliant?
The ADP1111ARZ-5 uses an 8-lead SOIC (SO-8) package with standard 1.27 mm pitch. Per Analog Devices' official product documentation and packaging data, the "RZ" suffix denotes RoHS-compliant, lead-free, and halogen-free construction - fully compliant with EU Directive 2011/65/EU and JEDEC J-STD-020 moisture sensitivity level 3.
ADP1111ARZ-5 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Function:
- Step-Up, Step-Down
- Output Configuration:
- Positive or Negative
- Topology:
- Buck, Boost
- Output Type:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2V
- Voltage - Input (Max):
- 30V
- Voltage - Output (Min/Fixed):
- 5V
- Voltage - Output (Max):
- -
- Current - Output:
- 400mA (Switch)
- Frequency - Switching:
- 72kHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
ADP1111ARZ-5 FAQ
1.How can I place an order for ADP1111ARZ-5 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADP1111ARZ-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 ADP1111ARZ-5 reliable?
The price and inventory of ADP1111ARZ-5 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADP1111ARZ-5 is usually 5 days.
3.What payment methods are accepted for ADP1111ARZ-5?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADP1111ARZ-5 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADP1111ARZ-5?
ADP1111ARZ-5 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADP1111ARZ-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 ADP1111ARZ-5?
For technical support, including ADP1111ARZ-5 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADP1111ARZ-5 requirements.
6.How does Aetrix verify that ADP1111ARZ-5 is sourced from the original manufacturer or authorized distributors?
All ADP1111ARZ-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 ADP1111ARZ-5 meets industry standards.
7.What is the process for return or replacement of ADP1111ARZ-5?
All ADP1111ARZ-5 units undergo pre-shipment inspection (PSI). If there is an issue with ADP1111ARZ-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 ADP1111ARZ-5 part is unused and in its original packaging.
Return procedure for ADP1111ARZ-5:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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