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Analog Devices Inc. ADP1111ANZ-5
- Part No.:
- ADP1111ANZ-5
- Manufacturer:
- Analog Devices Inc.
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
ADP1111ANZ-5.pdf
- Description:
- IC REG BUCK BOOST 5V 400MA 8PDIP
- Quantity:
- Payment:
- Shipping:
Inventory:114
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Product details
Overview
ADP1111ANZ-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 input in step-up mode, used in battery-powered peripherals and flash memory VPP generation.
For engineers reviewing the ADP1111ANZ-5 datasheet, ADP1111ANZ-5 pinout, ADP1111ANZ-5 application, or ADP1111ANZ-5 equivalent, key selection factors include its dual-mode topology support, user-adjustable current limit via ILIM pin, low quiescent current (300–500 μA), and compatibility with surface-mount inductors in 8-pin SOIC package.
Technical Context
The ADP1111ANZ-5 implements a gated-oscillator control architecture with a 1.25 V internal reference and comparator-based feedback loop. Its dual-collector/emitter switch configuration enables reconfigurable step-up, step-down, or inverting topologies using external passive components.
It integrates an open-collector gain block (AO pin) for low-battery detection or post-regulation, and supports current limiting via resistor between ILIM and VIN-220 Ω sets 400 mA limit. The device operates across 0°C to +70°C and tolerates SW1 up to 50 V and SW2 down to −0.5 V relative to GND.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 5.00 V ±2.5%, guaranteed across load and line variations per spec table. |
| Oscillator Frequency | 72 kHz typical (54–88 kHz range), enabling efficient energy transfer with 7 μs ON time. |
| Input Voltage Range | 2.0 V to 12.6 V in step-up mode; up to 30.0 V in step-down mode-supports wide battery chemistries. |
| Quiescent Current | 300–500 μA when switch is off-enables long battery life in standby. |
| Switch Current Limit | Programmable up to 400 mA with 220 Ω resistor on ILIM pin; internal max rating 1.5 A. |
| Saturation Voltage | 0.65 V max at 650 mA (step-up, VIN = 3 V); 1.5 V max at 650 mA (step-down, VIN = 12 V)-directly impacts efficiency. |
| Feedback Reference | Internal 1.25 V ±20 mV comparator threshold-sets regulation accuracy for fixed-output variants. |
Pinout & Package
ADP1111ANZ-5 is housed in an 8-lead plastic SOIC (SO-8) package, RoHS-compliant, with standard JEDEC MS-012AC footprint and 1.27 mm pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1. ILIM | Current limit programming input | Connect to VIN directly for full 1.5 A capability; add resistor to VIN to reduce switch current-220 Ω yields 400 mA limit. |
| 2. SW1 | Collector of internal NPN power switch | In step-up: connects to inductor/diode node; in step-down: connects to VIN-must withstand up to 50 V. |
| 3. SW2 | Emitter of internal NPN power switch | In step-up: connects to GND; in step-down: drives inductor-must not fall below −0.5 V relative to GND. |
| 4. GND | Power and signal ground reference | Common return for all internal circuitry; requires low-impedance PCB connection to minimize noise and thermal rise. |
| 5. VIN | Main input supply connection | Accepts 2–30 V DC; powers internal bias circuits and switch driver-bypass with ≥10 μF ceramic capacitor. |
| 6. AO | Open-collector auxiliary gain block output | Sinks up to 300 μA; used for low-battery detection, UVLO, or error amplification-requires external pull-up. |
| 7. SET | Non-inverting input of gain block | Accepts voltage divider from VIN for programmable trip point; bias current 270–400 nA-high-impedance node. |
| 8. FB/SENSE | Feedback input / internal voltage sense | On ADP1111ANZ-5: internally connected to laser-trimmed resistive divider for 5 V regulation-connect directly to output. |
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. |
| 72 kHz fixed-frequency oscillator | Enables predictable EMI profile and simplifies filter design vs. variable-frequency controllers. |
| Low quiescent current (300–500 μA) | Extends runtime in battery-critical applications like remote controls and palmtop computers. |
| Internal 1 A power switch with 1.5 A absolute max | Eliminates need for external MOSFET in most ≤200 mA applications-reduces component count and layout complexity. |
| Adjustable current limit via ILIM pin | Allows optimization of inductor size and thermal performance without changing IC-supports design reuse across input ranges. |
Applications
| Battery-Powered Peripherals | Flash Memory VPP Generation |
|---|---|
Use Scenario: Powering USB add-on cards or SD card adapters from single-cell Li-ion or dual alkaline sources. IC Role / Device Role / Timing Role: Step-up regulator generating stable 5 V from 3.0–3.6 V input, maintaining regulation during battery discharge. Use Value: Enables direct use of legacy 5 V peripherals without external boost converters-reduces system cost and footprint. | Use Scenario: Generating +12 V programming voltage (VPP) for NOR/NAND flash memory in embedded systems. IC Role / Device Role / Timing Role: Step-up converter delivering 12 V at ≤50 mA from 3–5 V logic rail, activated only during write/erase cycles. Use Value: Eliminates need for dedicated high-voltage charge pump IC-simplifies power architecture and reduces standby current. |
| Laptop/Palmtop Auxiliary Rails | Cellular Phone Subsystem Supply |
Use Scenario: Providing isolated 5 V rail for touch controller or fingerprint sensor in space-constrained mobile computing devices. IC Role / Device Role / Timing Role: Step-down regulator converting 12 V battery or adapter input to regulated 5 V, operating across full temperature range. Use Value: Delivers clean, stable 5 V with minimal external components-avoids interference with sensitive analog subsystems. | Use Scenario: Supplying 5 V to camera module or RF front-end IC in GSM/UMTS handsets during burst transmission. IC Role / Device Role / Timing Role: Micropower step-up regulator supporting intermittent high-current pulses while maintaining low average quiescent draw. Use Value: Extends talk time by minimizing idle current-critical for meeting IEC 62368-1 battery life requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-up/step-down regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADP1111ARZ-5 | Same silicon, 8-lead SOIC package but with different tape-and-reel packaging and moisture sensitivity level (MSL3 vs MSL1 for ANZ). | No functional difference; identical electrical specs and pinout-suitable for automated SMT assembly requiring different reel specs. | Select ADP1111ARZ-5 for volume production with standard J-STD-020 MSL3 handling; ADP1111ANZ-5 preferred for prototyping or low-volume where MSL1 is required. |
| TPS61040DRVR | Higher 500 kHz switching frequency, integrated Schottky diode, 28 V max input, but no step-down capability and fixed 5 V output only via external resistor. | Optimized for compact step-up-only designs; lacks ADP1111ANZ-5's step-down and inverting modes-unsuitable for bidirectional voltage conversion. | Choose TPS61040DRVR when board space is critical and only step-up is needed; retain ADP1111ANZ-5 when topology flexibility or wide input range (up to 30 V) is mandatory. |
Compared with ADP1111ARZ-5, ADP1111ANZ-5 offers identical regulation performance but tighter moisture sensitivity control for manual handling; versus TPS61040DRVR, it provides broader topology support and higher input voltage tolerance at the cost of lower switching frequency and external diode requirement.
Availability
ADP1111ANZ-5 is available at Aetrix Electronics and suitable for battery backup supplies, portable instruments, and flash memory VPP generators requiring stable component supply and long-term industrial availability.
Supply support for ADP1111ANZ-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 family was designed for ultra-low-power, flexible DC/DC conversion in portable and battery-operated systems-emphasizing micropower operation, wide input range, and topology reconfigurability without external controller changes.
FAQ
What is the maximum input voltage the ADP1111ANZ-5 can handle in step-down mode?
The ADP1111ANZ-5 supports up to 30 V input voltage in step-down mode, as confirmed in the Absolute Maximum Ratings and Specifications tables. This allows direct use with 24 V industrial rails or multi-cell battery stacks without pre-regulation. Operation above 12.6 V is limited to step-down or inverting configurations-step-up mode maxes out at 12.6 V. Always observe the 36 V absolute maximum supply voltage limit.
Does the ADP1111ANZ-5 require external compensation components?
No, the ADP1111ANZ-5 does not require external compensation components. Its comparator-based control loop with built-in hysteresis ensures inherent stability across all operating conditions. The datasheet explicitly states that "loop stability [is ensured] without requiring external components for frequency compensation." This simplifies design and eliminates tuning effort for standard step-up/step-down implementations using recommended inductor and capacitor values.
Can the ADP1111ANZ-5 be used in inverting (positive-to-negative) configurations?
Yes, the ADP1111ANZ-5 supports inverting configurations, as documented in the Theory of Operation and Inductor Selection sections. By reconfiguring SW1 and SW2 connections per Figure 22, it generates negative outputs-for example, –5 V from +4.5–5.5 V input. The device's dual-switch-node architecture and −0.5 V SW2 minimum rating enable safe operation in this mode. Output current capability remains consistent with step-up limits (≤100 mA typical at –5 V).
What is the purpose of the AO and SET pins on the ADP1111ANZ-5?
The AO (auxiliary output) and SET pins form an uncommitted gain block: SET is the non-inverting input referenced to the internal 1.25 V reference, and AO is an open-collector NPN output sinking up to 300 μA. Together, they enable functions like low-battery detection (via resistor divider on SET), undervoltage lockout, or post-linear regulation-without adding external op-amps. In ADP1111ANZ-5, these pins remain fully functional despite the fixed 5 V output.
Is the ADP1111ANZ-5 pin-compatible with other members of the ADP1111 family?
Yes, the ADP1111ANZ-5 is pin-compatible with all ADP1111 variants-including ADP1111ARZ-5, ADP1111ANZ-3.3, ADP1111ANZ-12, and the adjustable ADP1111. All share identical SO-8 pinout, electrical interface, and functional pin definitions. The only differences are internal laser-trimmed feedback resistors (for fixed outputs) and packaging specifications-enabling drop-in replacement across voltage options in the same PCB layout.
ADP1111ANZ-5 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 8-DIP (0.300", 7.62mm)
- 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:
- Through Hole
- Supplier Device Package:
- 8-PDIP
ADP1111ANZ-5 FAQ
1.How can I place an order for ADP1111ANZ-5 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADP1111ANZ-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 ADP1111ANZ-5 reliable?
The price and inventory of ADP1111ANZ-5 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADP1111ANZ-5 is usually 5 days.
3.What payment methods are accepted for ADP1111ANZ-5?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADP1111ANZ-5 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADP1111ANZ-5?
ADP1111ANZ-5 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADP1111ANZ-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 ADP1111ANZ-5?
For technical support, including ADP1111ANZ-5 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADP1111ANZ-5 requirements.
6.How does Aetrix verify that ADP1111ANZ-5 is sourced from the original manufacturer or authorized distributors?
All ADP1111ANZ-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 ADP1111ANZ-5 meets industry standards.
7.What is the process for return or replacement of ADP1111ANZ-5?
All ADP1111ANZ-5 units undergo pre-shipment inspection (PSI). If there is an issue with ADP1111ANZ-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 ADP1111ANZ-5 part is unused and in its original packaging.
Return procedure for ADP1111ANZ-5:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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