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Analog Devices Inc. ADP1109AAN-12
- Part No.:
- ADP1109AAN-12
- Manufacturer:
- Analog Devices Inc.
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
ADP1109AAN-12.pdf
- Description:
- IC REG BOOST 12V 1.2A 8PDIP
- Quantity:
- Payment:
- Shipping:
Inventory:1,134
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Product details
Overview
ADP1109AAN-12 from Analog Devices is a micropower fixed-output step-up DC-to-DC converter delivering 12 V at up to 60 mA from a 5 V input, operating at 120 kHz with 460 µA quiescent current and logic-controlled shutdown. It integrates an internal power transistor and 1.25 V reference, requiring only four external components for full operation in flash memory VPP generation and portable instrument power supplies.
For engineers reviewing the ADP1109AAN-12 datasheet, ADP1109AAN-12 pinout, ADP1109AAN-12 application, or ADP1109AAN-12 equivalent, this device is selected for low-input-voltage boost conversion where minimal quiescent current, fixed 12 V output, and DIP-8 packaging are critical - especially in battery-backed systems and handheld inventory computers requiring stable high-voltage rail generation.
Technical Context
The ADP1109AAN-12 uses a gated-oscillator architecture with internal 1.25 V comparator reference and hysteresis (8–12.5 mV) to regulate output without external compensation. Its oscillator operates at 120 kHz (±25 kHz), enabling use of small surface-mount inductors like 33 µH.
It features a built-in NPN power switch with saturation voltage ≤0.8 V at 500 mA, logic-level shutdown (VIH ≥2.0 V, VIL ≤0.8 V), and operates across 2 V to 9 V input range while maintaining 11.45–12.55 V output accuracy over temperature and load.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 12.00 V ±4.6% (11.45–12.55 V); tightly regulated for flash memory VPP programming |
| Oscillator Frequency | 120 kHz ±25 kHz; enables compact 10–33 µH inductor selection and reduces EMI vs higher-frequency converters |
| Quiescent Current | 460 µA (typical, shutdown off); enables >100-hour standby in coin-cell-powered devices |
| Input Voltage Range | 2 V to 9 V; supports single-cell Li-ion (3.0–4.2 V), NiMH (2.4–3.6 V), and regulated 5 V logic rails |
| Switch Saturation Voltage | ≤0.8 V at 500 mA; limits conduction loss to <400 mW at full load, preserving efficiency in low-power boost stages |
| Duty Cycle | 57–77% (full load); adapts dynamically to input/output ratio, supporting wide VIN variation without instability |
| Shutdown Pin Threshold | VIL ≤0.8 V / VIH ≥2.0 V; compatible with standard CMOS/TTL logic for clean enable/disable control |
Pinout & Package
ADP1109AAN-12 is housed in an 8-lead plastic DIP (N-8) package with 0.3-inch width, through-hole mounting, and RoHS-compliant lead finish. Pin 1 is marked by a notch or dot; pins 2 and 6 are no-connect (NC).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (VIN) | Input supply connection | Accepts 2–9 V unregulated input; must be decoupled locally to suppress switching noise |
| 2 (NC) | No connection | Internally unconnected; must remain floating - no PCB trace or pad required |
| 3 (SW) | Collector node of internal NPN switch | Drives external inductor; carries pulsed current up to 1.2 A peak - requires short, low-inductance routing |
| 4 (PGND) | Power ground return | Separate from signal GND; routes high di/dt switch return current to minimize ground bounce |
| 5 (GND) | Signal/reference ground | Reference for FB comparator and internal circuitry; connects to PGND at single point near device |
| 6 (NC) | No connection | Internally unconnected; must remain floating - no PCB trace or pad required |
| 7 (SHUTDOWN) | Logic enable/disable control | Pull low to disable oscillator and reduce current to 460 µA; pull high (>2.0 V) to operate |
| 8 (FB/SENSE) | Feedback input (fixed 12 V version) | Internally connected to output via laser-trimmed resistor; connect directly to VOUT for regulation |
Key Features
| Feature | Design Value |
|---|---|
| Gated-oscillator topology | Eliminates need for external frequency compensation components and simplifies loop stability design |
| Fixed 12 V output with internal resistive divider | Removes external feedback resistors - reduces BOM count and layout area versus adjustable versions |
| Logic-compatible shutdown | Enables system-level power sequencing and zero-current sleep mode without external level-shifting |
| Low 460 µA quiescent current | Extends battery life in always-on backup supplies and low-duty-cycle portable instruments |
| Integrated 1.25 V reference and comparator | Provides precise output regulation tolerance (±4.6%) without external voltage references or op amps |
Applications
| Flash Memory VPP Generation | Single-Supply 5 V to 12 V Boost |
|---|---|
Use Scenario: Generating +12 V programming voltage for NOR/NAND flash memory in handheld inventory scanners powered from 3.3 V or 5 V rails. IC Role / Device Role / Timing Role: Primary step-up regulator providing stable, low-noise VPP rail during write/erase cycles. Use Value: Delivers 60 mA at 12 V with <120 mV ripple, meeting JEDEC VPP timing and voltage accuracy requirements for reliable flash programming. |
Use Scenario: Converting regulated 5 V logic supply to isolated 12 V for analog front-end biasing in portable test equipment. IC Role / Device Role / Timing Role: Fixed-output boost converter supplying auxiliary high-voltage rail independent of main system power domain. Use Value: Achieves 12 V output with ±4.6% tolerance across 0°C–70°C, eliminating need for post-regulation LDO and reducing thermal load. |
| Battery-Backed Real-Time Clock Supply | Portable Instrument High-Voltage Bias |
Use Scenario: Providing 12 V backup supply for RTC and SRAM retention during main power loss in medical data loggers using coin-cell batteries. IC Role / Device Role / Timing Role: Micropower boost stage activated only during brownout events to extend backup runtime. Use Value: Draws only 460 µA quiescent current when active, enabling >200-day backup from CR2032 cell at 12 V/10 µA load. |
Use Scenario: Powering photodiode transimpedance amplifier bias or LCD contrast control in handheld spectrometers. IC Role / Device Role / Timing Role: Compact, low-noise high-voltage source integrated into space-constrained analog subsystems. Use Value: Supports 12 V output with <120 mV ripple and 120 kHz switching - easily filtered to meet analog signal chain PSRR targets. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-up DC-to-DC converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX680ESA+ | Charge-pump topology (no inductor); 12 V output at 100 mA; 120 kHz switching; 125 µA quiescent current | Limited to lower output currents and higher output impedance; unsuitable for >50 mA continuous loads | Select MAX680ESA+ only for ultra-low-quiescent, low-current (<20 mA), inductor-free designs where ripple tolerance is higher |
| TPS61040DRVR | Current-mode PWM controller; 12 V output at 280 mA; 500 kHz switching; 100 µA quiescent current; integrated 500 mA switch | Higher efficiency above 100 mA; requires external compensation; not pin-compatible | Choose TPS61040DRVR for higher output current, better light-load efficiency, or tighter output regulation - but expect PCB redesign |
Compared with ADP1109AAN-12, MAX680ESA+ offers lower quiescent current but lacks inductor-based current capability, while TPS61040DRVR delivers 4.7× more output current at higher frequency but demands full schematic and layout revision due to differing control architecture and pinout.
Availability
ADP1109AAN-12 is available at Aetrix Electronics and suitable for flash memory VPP generation, portable instrument biasing, and battery-backed real-time clock supply applications requiring stable component supply, long-lifecycle support, and through-hole manufacturability.
Supply support for ADP1109AAN-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, serving precision instrumentation, industrial automation, and communications markets since 1965.
The ADP1109A series was designed specifically for micropower, low-component-count boost conversion in portable and battery-critical systems - emphasizing quiescent current optimization, fixed-output simplicity, and DIP/SO packaging for legacy and prototyping use cases.
FAQ
What is the maximum output current supported by the ADP1109AAN-12?
The ADP1109AAN-12 delivers up to 60 mA at 12 V when supplied from a 5 V input, as confirmed in the Typical Application section and General Description. Output current capability decreases at lower input voltages (e.g., 35 mA from 2 V input) due to duty cycle and switch current limitations. The internal switch supports 1.2 A peak current, but practical continuous output is constrained by thermal dissipation in the DIP-8 package.
Does the ADP1109AAN-12 require external feedback resistors?
No, the ADP1109AAN-12 does not require external feedback resistors. As a fixed-output variant, it integrates laser-trimmed internal resistors that set the 12 V output. Per the Pin Function Descriptions, the FB/SENSE pin (Pin 8) must be connected directly to the output voltage node - no external divider is needed or permitted.
Can the ADP1109AAN-12 operate from a single alkaline cell?
Yes, the ADP1109AAN-12 operates from 2 V to 9 V input, making it compatible with a single alkaline cell (1.5 V fresh, ~0.9 V end-of-life). However, startup requires ≥2 V; operation below this threshold is not guaranteed. At 1.8 V input, output drops out - so practical use begins at ~2.2 V under load, aligning with typical alkaline discharge curves.
What is the purpose of separate PGND and GND pins on the ADP1109AAN-12?
The ADP1109AAN-12 separates PGND (Pin 4) and GND (Pin 5) to isolate high-di/dt power return paths from sensitive analog reference and comparator circuitry. PGND carries pulsed inductor return current, while GND serves as the quiet reference for the 1.25 V bandgap and FB comparator. Connecting them at a single point near the device minimizes ground noise coupling into regulation feedback.
Is the ADP1109AAN-12 pin-compatible with other ADP1109A variants?
Yes, all ADP1109A variants - including ADP1109AAN-3.3, ADP1109AAN-5, ADP1109AAN-12, and ADP1109AAN (adjustable) - share identical 8-lead DIP pinouts and electrical interfaces. Only the internal feedback network differs; the SENSE pin functions identically across variants (direct VOUT connection for fixed versions, external resistor divider for adjustable).
ADP1109AAN-12 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 8-DIP (0.300", 7.62mm)
- Packaging:
- Bulk
- Product Status:
- Active
- Function:
- Step-Up
- Output Configuration:
- Positive
- Topology:
- Boost
- Output Type:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2V
- Voltage - Input (Max):
- 9V
- Voltage - Output (Min/Fixed):
- 12V
- Voltage - Output (Max):
- -
- Current - Output:
- 1.2A (Switch)
- Frequency - Switching:
- 120kHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 8-PDIP
ADP1109AAN-12 FAQ
1.How can I place an order for ADP1109AAN-12 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADP1109AAN-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 ADP1109AAN-12 reliable?
The price and inventory of ADP1109AAN-12 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADP1109AAN-12 is usually 5 days.
3.What payment methods are accepted for ADP1109AAN-12?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADP1109AAN-12 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADP1109AAN-12?
ADP1109AAN-12 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADP1109AAN-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 ADP1109AAN-12?
For technical support, including ADP1109AAN-12 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADP1109AAN-12 requirements.
6.How does Aetrix verify that ADP1109AAN-12 is sourced from the original manufacturer or authorized distributors?
All ADP1109AAN-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 ADP1109AAN-12 meets industry standards.
7.What is the process for return or replacement of ADP1109AAN-12?
All ADP1109AAN-12 units undergo pre-shipment inspection (PSI). If there is an issue with ADP1109AAN-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 ADP1109AAN-12 part is unused and in its original packaging.
Return procedure for ADP1109AAN-12:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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