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Analog Devices Inc. ADP1109AAN-3.3
- Part No.:
- ADP1109AAN-3.3
- Manufacturer:
- Analog Devices Inc.
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
ADP1109AAN-3.3.pdf
- Description:
- IC REG BOOST 3.3V 1.2A 8PDIP
- Quantity:
- Payment:
- Shipping:
Inventory:1,100
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Product details
Overview
ADP1109AAN-3.3 from Analog Devices is a micropower step-up DC-to-DC converter delivering a fixed 3.3 V output from 2 V to 3 V input, with 120 kHz oscillator frequency, 460 µA quiescent current in shutdown, and integrated NPN power switch. It operates in portable battery-powered systems requiring low-noise, high-efficiency voltage boosting for flash memory VPP generation and single-cell logic rails.
For engineers reviewing the ADP1109AAN-3.3 datasheet, ADP1109AAN-3.3 pinout, ADP1109AAN-3.3 application, or ADP1109AAN-3.3 equivalent, key selection criteria include input voltage range (2–3 V), output accuracy (±5%), thermal stability (0°C to +70°C), and compatibility with standard 8-lead DIP layouts for legacy industrial and handheld designs.
Technical Context
The ADP1109AAN-3.3 uses a gated-oscillator architecture with internal 1.25 V reference and comparator hysteresis (8–12.5 mV) to regulate output without external compensation. Its internal NPN switch features 0.4–0.8 V saturation voltage at 500 mA and supports duty cycles of 57–77% across load and temperature.
Feedback is internally configured for 3.3 V via laser-trimmed resistors-pin 8 (FB/SENSE) connects directly to output-eliminating external resistor networks. Shutdown control is TTL-compatible (VIH ≥ 2.0 V, VIL ≤ 0.8 V), reducing operating current to 460 µA when asserted.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 3.30 V ±5% (3.13–3.47 V); tightly regulated for 3.3 V logic and Flash VPP generation |
| Oscillator Frequency | 120 kHz typical (95–155 kHz); enables use of small, low-cost surface-mount inductors (e.g., 10–33 µH) |
| Quiescent Current | 460 µA max in shutdown; critical for battery life in always-on or low-duty-cycle portable devices |
| Input Voltage Range | 2 V to 3 V; supports single-cell Li-ion, NiMH, or alkaline operation without under-voltage lockout |
| Switch Saturation Voltage | 0.4–0.8 V at 500 mA; limits conduction loss and thermal rise in compact DIP packages |
| Output Ripple | 15–35 mV peak-to-peak; compatible with low-ESR tantalum or OS-CON capacitors for stable digital rail |
| Operating Temperature | 0°C to +70°C; validated for commercial-grade handheld and instrumentation environments |
Pinout & Package
ADP1109AAN-3.3 is housed in an 8-lead plastic DIP (N-8) package with 0.300-inch width, through-hole mounting, and industry-standard pin spacing. Pin 1 is marked by notch or dot; pins 2 and 6 are no-connect (NC) and must remain unconnected.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 VIN | Input supply connection | Accepts 2–3 V DC; requires local 22 µF low-ESR capacitor for input stability |
| 2 NC | No connection | Internally unconnected; must be left floating or grounded per layout best practice |
| 3 SW | Collector of internal NPN switch | Drives external inductor; handles up to 1.2 A peak current and 50 V transient |
| 4 PGND | Power ground return | Separate low-impedance path for switch current; must be routed away from signal GND |
| 5 GND | Analog/reference ground | Reference node for 1.25 V bandgap and comparator; ties to system ground at single point |
| 6 NC | No connection | Internally unconnected; must be left floating or grounded per layout best practice |
| 7 SHUTDOWN | Logic-controlled enable/disable | TTL-compatible input; <0.8 V disables oscillator and reduces IQ to 460 µA |
| 8 FB(SENSE) | Feedback input / output sense | Internally connected to 3.3 V divider; connect directly to regulated output for closed-loop control |
Key Features
| Feature | Design Value |
|---|---|
| Fixed 3.3 V output with laser-trimmed resistors | Eliminates external feedback network, reducing BOM count and layout area in space-constrained DIP designs |
| Gated-oscillator architecture | Enables stable regulation without external frequency compensation components or loop stability analysis |
| Logic-controlled shutdown | Reduces system standby power by disabling switching action while maintaining regulated output hold-up capability |
| Low 460 µA shutdown current | Extends battery runtime in intermittent-use applications such as barcode scanners and handheld terminals |
| 120 kHz switching frequency | Permits use of low-profile, low-cost ferrite inductors (e.g., Sumida CD54 series) without EMI filtering overhead |
Applications
| Flash Memory VPP Generation | Single-Cell to 3.3 V Logic Supply |
|---|---|
Use Scenario: Generating +12 V programming voltage for NOR/NAND flash memory in embedded controllers using a 3.3 V main rail. IC Role / Device Role / Timing Role: Step-up regulator providing isolated, low-ripple VPP with fast transient response during write/erase cycles. Use Value: Enables direct integration of flash programming circuitry without external charge pumps or discrete transistor arrays. | Use Scenario: Powering 3.3 V microcontrollers and peripherals from a single 2.4–3.0 V Li-ion cell in portable data loggers. IC Role / Device Role / Timing Role: Primary DC-DC boost converter delivering regulated 3.3 V at up to 100 mA with minimal external components. Use Value: Reduces bill-of-materials to only inductor, diode, and two capacitors-ideal for cost-sensitive, high-volume handhelds. |
| Laser Diode Bias Supply | Portable Instrument Reference Rail |
Use Scenario: Providing stable 3.3 V bias for low-power laser diodes in optical distance sensors and barcode readers. IC Role / Device Role / Timing Role: Low-noise, low-ripple voltage source with fast load-step response to maintain diode current stability. Use Value: Minimizes optical output drift during pulsed operation; supports analog modulation without added filtering. | Use Scenario: Generating precision 3.3 V reference for ADCs and DACs in battery-operated test equipment and sensor nodes. IC Role / Device Role / Timing Role: Regulated supply with tight output tolerance (±5%) and low temperature drift (<0.02%/°C). Use Value: Improves measurement accuracy by eliminating input-dependent output variation across battery discharge curve. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-up DC-DC converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADP1109AAR-3.3 | Same electrical specs; SO-8 surface-mount package instead of DIP | Requires PCB rework for SMT assembly; not drop-in compatible with through-hole footprints | Select for new designs prioritizing board area reduction and automated assembly over legacy DIP compatibility |
| MAX630ESA+ | 3.3 V fixed output, 100 kHz oscillator, 500 µA shutdown current, but uses P-channel MOSFET switch | Higher efficiency at light loads due to lower RDS(on), but requires external feedback for some variants | Choose when optimizing for >85% efficiency below 10 mA or integrating into mixed-technology boards with existing MAXIM support |
Compared with ADP1109AAN-3.3, ADP1109AAR-3.3 offers identical performance in a smaller footprint but mandates SMT retooling, while MAX630ESA+ trades slightly higher quiescent current for improved light-load efficiency and different switch topology-neither is pin-compatible, and both require schematic and layout revision.
Availability
ADP1109AAN-3.3 is available at Aetrix Electronics and suitable for flash memory programming, handheld computing, and portable instrumentation requiring stable component supply across extended product lifecycles.
Supply support for ADP1109AAN-3.3 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 ADP1109A family was designed specifically for low-power, low-cost step-up conversion in battery-operated portable electronics-emphasizing minimal external parts, micropower shutdown, and robust operation across commercial temperature ranges.
FAQ
What is the maximum output current capability of the ADP1109AAN-3.3?
The ADP1109AAN-3.3 delivers up to 100 mA at 3.3 V from a 3 V input, as verified in the Typical Applications section of the datasheet. Output current is limited by internal switch saturation voltage (0.4–0.8 V), inductor selection, and thermal dissipation in the 8-lead DIP package. Exceeding 100 mA risks thermal shutdown or reduced regulation accuracy.
Can the ADP1109AAN-3.3 operate from a single alkaline cell?
Yes, the ADP1109AAN-3.3 supports input voltages from 2 V to 3 V, making it fully compatible with a single alkaline cell (nominal 1.5 V, fresh up to 1.65 V, end-of-life ~0.9 V). However, regulation is guaranteed only down to 2 V input; below that, output drops out of specification. For full discharge coverage, pair with a low-VIN supervisor or use in applications with early battery cutoff.
Is the ADP1109AAN-3.3 pin-compatible with other ADP1109A variants?
No-the ADP1109AAN-3.3 shares the same 8-lead DIP pinout as ADP1109AAN-5 and ADP1109AAN-12, but output voltage is factory-set and non-adjustable. While pin assignments (VIN, SW, PGND, GND, SHUTDOWN, FB/SENSE) match, substituting variants changes output voltage and may violate downstream device ratings unless explicitly designed for multi-voltage operation.
What type of output capacitor is recommended for the ADP1109AAN-3.3?
Analog Devices recommends low-ESR tantalum or OS-CON capacitors (e.g., AVX TPS series, 22 µF, 16 V) for the ADP1109AAN-3.3 output. These minimize ripple (15–35 mV) and improve transient response. Aluminum electrolytics are acceptable if low-ESR types are used, but standard general-purpose electrolytics increase ripple and reduce efficiency due to higher ESR and ESL.
Does the ADP1109AAN-3.3 require external compensation components?
No-the ADP1109AAN-3.3 uses a gated-oscillator architecture with built-in comparator hysteresis (8–12.5 mV), enabling stable regulation without external compensation capacitors or resistors. This eliminates loop stability analysis and simplifies design for engineers targeting rapid prototyping and low-component-count solutions.
ADP1109AAN-3.3 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):
- 3.3V
- 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-3.3 FAQ
1.How can I place an order for ADP1109AAN-3.3 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADP1109AAN-3.3 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-3.3 reliable?
The price and inventory of ADP1109AAN-3.3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADP1109AAN-3.3 is usually 5 days.
3.What payment methods are accepted for ADP1109AAN-3.3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADP1109AAN-3.3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADP1109AAN-3.3?
ADP1109AAN-3.3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADP1109AAN-3.3 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-3.3?
For technical support, including ADP1109AAN-3.3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADP1109AAN-3.3 requirements.
6.How does Aetrix verify that ADP1109AAN-3.3 is sourced from the original manufacturer or authorized distributors?
All ADP1109AAN-3.3 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-3.3 meets industry standards.
7.What is the process for return or replacement of ADP1109AAN-3.3?
All ADP1109AAN-3.3 units undergo pre-shipment inspection (PSI). If there is an issue with ADP1109AAN-3.3, 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-3.3 part is unused and in its original packaging.
Return procedure for ADP1109AAN-3.3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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