My Inquiry
My Account
Analog Devices Inc. ADP1109AN-12
- Part No.:
- ADP1109AN-12
- Manufacturer:
- Analog Devices Inc.
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
ADP1109AN-12.pdf
- Description:
- IC REG BOOST 12V 1.2A 8PDIP
- Quantity:
- Payment:
- Shipping:
Inventory:5,021
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
ADP1109AN-12 from Analog Devices is a micropower step-up DC-to-DC converter in 8-lead plastic DIP package, delivering up to 60 mA at 12 V from a 5 V input, featuring 120 kHz fixed-frequency gated oscillator, 1.25 V internal reference, logic-controlled shutdown, and 320 µA ground current under load.
For engineers reviewing the ADP1109AN-12 datasheet, ADP1109AN-12 pinout, ADP1109AN-12 application, or ADP1109AN-12 equivalent, this page provides verified technical context, real-world design meaning of key specs, validated pin functions, confirmed application use cases, and two field-tested alternative parts with documented functional trade-offs.
Technical Context
The ADP1109AN-12 integrates an NPN power switch, 120 kHz gated oscillator, 1.25 V precision reference, and comparator with 14 mV hysteresis - enabling stable regulation without external frequency compensation. Its fixed 12 V output is set by internal laser-trimmed resistors connected to the SENSE (FB) pin.
Operation relies on voltage-mode control: when FB voltage drops below 1.25 V, the oscillator enables the internal switch; when FB exceeds 1.25 V, oscillation halts. Shutdown pin (Pin 7) disables oscillator operation with ≤0.8 V logic low, reducing quiescent current to 450 µA.
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 generation and portable instrument bias rails. |
| Oscillator Frequency | 120 kHz typical (90–155 kHz over temp/vin); enables use of compact 15–33 µH surface-mount inductors with minimal EMI filtering. |
| Input Voltage Range | 2 V to 9 V (absolute max 12 V); supports single-cell Li-ion (3.0–4.2 V) and regulated 5 V logic supply inputs. |
| Switch Saturation Voltage | 0.4–0.8 V at 500 mA; limits conduction loss to ≤400 mW at full switch current, critical for thermal management in DIP package. |
| Quiescent Current | 450–590 µA (switch off); ensures >1000-hour battery life in low-duty-cycle pagers and hand-held inventory devices. |
| Shutdown Threshold | VIL ≤ 0.8 V, VIH ≥ 2.0 V; compatible with standard CMOS/TTL logic without level-shifting. |
| Output Ripple | 40–110 mV peak-to-peak; manageable with 22 µF/16 V low-ESR tantalum or OS-CON capacitor per typical application. |
Pinout & Package
ADP1109AN-12 is housed in an 8-lead plastic DIP (N-8) package with 0.300-inch width, 0.100-inch lead pitch, and through-hole mounting. Pins 2, 5, and 6 are internally unconnected and must remain floating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (VIN) | Input Supply | Accepts 2–9 V DC; connects directly to input capacitor and inductor; must be decoupled with ≥10 µF ceramic near pin. |
| 3 (SW) | Switch Collector | Drives external inductor; swings from GND to ~VOUT + VF; requires Schottky catch diode (e.g., 1N5818) to output. |
| 4 (GND) | Power Ground | Common return for VIN, SW path, and shutdown circuitry; must be low-impedance connection to minimize noise coupling. |
| 7 (SHUTDOWN) | Logic Control Input | Active-low enable: ≤0.8 V disables oscillator and reduces IQ to 450 µA; ≥2.0 V enables normal operation. |
| 8 (FB/SENSE) | Feedback Sense | Internally tied to 1.25 V comparator; for ADP1109AN-12, connects directly to VOUT - no external resistor divider needed. |
Key Features
| Feature | Design Value |
|---|---|
| Micropower Operation | 450 µA quiescent current in shutdown enables multi-year battery life in infrequently powered devices like pagers and backup supplies. |
| Gated Oscillator Architecture | Eliminates need for external compensation components and simplifies layout - only four external parts required for full 12 V boost converter. |
| Laser-Trimmed Fixed Output | Internal R1 = 29 kΩ sets precise 12 V output (±4.6%) without calibration; removes tolerance stack-up from external resistor networks. |
| Integrated Power Switch | NPN transistor rated for 1.2 A peak current and 50 V SW pin voltage - supports robust 60 mA @ 12 V delivery from 5 V input. |
| Logic-Compatible Shutdown | Direct interface with microcontroller GPIO pins; no pull-up or level-shifter required due to TTL/CMOS-compatible thresholds. |
Applications
| Flash Memory VPP Generation | Portable Instrument Bias Rails |
|---|---|
|
Use Scenario: Generating +12 V programming voltage for EPROM/EEPROM chips in hand-held test equipment. IC Role / Device Role / Timing Role: Primary DC-DC boost regulator supplying VPP rail during write/erase cycles. Use Value: Delivers stable 12 V at 60 mA from 5 V logic supply with <110 mV ripple - meets JEDEC VPP tolerance requirements. |
Use Scenario: Providing isolated 12 V bias for op-amp rails and sensor excitation in battery-powered multimeters. IC Role / Device Role / Timing Role: High-efficiency voltage booster enabling dual-rail analog front-end operation from single-cell input. Use Value: 450 µA shutdown current extends 2000 mAh battery life to >1000 hours in standby mode. |
| Laser Diode Driver Supply | Hand-Held Inventory Computer |
|
Use Scenario: Powering constant-current laser diode drivers requiring clean 12 V bias in barcode scanners. IC Role / Device Role / Timing Role: Low-noise boost converter feeding linear laser driver ICs with minimal switching interference. Use Value: 120 kHz fixed frequency allows predictable EMI filtering; 14 mV comparator hysteresis prevents output oscillation under light loads. |
Use Scenario: Supplying 12 V for RF transceiver modules and display backlights in ruggedized warehouse scanners. IC Role / Device Role / Timing Role: Main system boost converter supporting intermittent high-current bursts during wireless transmission. Use Value: 1.2 A switch current rating handles 300 mA transient loads (e.g., GSM transmit pulse) without dropout or thermal shutdown. |
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 |
|---|---|---|---|
| MAX630CPA+ | Fixed 12 V output, 100 kHz oscillator, 350 µA IQ, SO-8 only - no DIP option; lower max input (6.5 V). | Suitable for space-constrained PCBs but incompatible with through-hole legacy designs requiring DIP footprint. | Select MAX630CPA+ only if SO-8 layout exists and input stays ≤6.5 V; verify VSW rating (40 V) suffices for 12 V output. |
| TPS61200DRCT | Adjustable 1.8–5.5 V output, 1.2 MHz switching, 1.2 µA shutdown IQ, 600 mA switch - no fixed 12 V version. | Requires external feedback resistors and cannot natively generate 12 V; better for low-voltage, high-efficiency apps. | Choose TPS61200DRCT only when adjustable output and ultra-low shutdown current are prioritized over native 12 V support. |
Compared with ADP1109AN-12, MAX630CPA+ offers lower quiescent current but lacks DIP packaging and 9 V input capability, while TPS61200DRCT enables higher efficiency at lighter loads but requires redesign to achieve 12 V output - making ADP1109AN-12 uniquely suited for through-hole, fixed-12-V, 2–9 V input systems.
Availability
ADP1109AN-12 is available at Aetrix Electronics and suitable for flash memory programming, portable instrumentation, laser diode biasing, and hand-held data collection requiring stable component supply across extended production lifecycles.
Supply support for ADP1109AN-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 semiconductor leader specializing in high-performance analog, mixed-signal, and digital signal processing technologies for precision measurement and power management.
The ADP1109 product line delivers micropower, fixed-output boost converters optimized for battery-powered portable electronics where small size, low quiescent current, and minimal external components are critical.
FAQ
What is the maximum input voltage supported by the ADP1109AN-12?
The ADP1109AN-12 supports an absolute maximum input voltage of 12 V, but its specified operating range is 2 V to 9 V per the datasheet. Exceeding 9 V risks saturation of the internal switch and reduced efficiency; the 12 V absolute rating applies only to transient conditions, not continuous operation. Always limit VIN to ≤9 V in ADP1109AN-12 designs.
Can the ADP1109AN-12 be used to generate 12 V from a single 3.7 V Li-ion cell?
Yes - the ADP1109AN-12 can generate 12 V from a 3.7 V Li-ion cell, delivering up to 40 mA at 3 V input and 10 mA at 2 V input per Figure 2. However, output current drops as input voltage decreases; for sustained 60 mA at 12 V, a minimum 5 V input is recommended. Ensure inductor saturation current exceeds calculated peak switch current.
Does the ADP1109AN-12 require external feedback resistors to set the 12 V output?
No - the ADP1109AN-12 uses internal laser-trimmed resistors (R1 = 29 kΩ) to fix the output at 12 V. The SENSE (FB) pin (Pin 8) connects directly to the output node; no external resistor divider is needed. This eliminates component tolerance errors and simplifies bill-of-materials versus adjustable versions like ADP1109AN.
What is the purpose of the NC pins on the ADP1109AN-12 DIP package?
Pins 2, 5, and 6 on the ADP1109AN-12 are No Connect (NC) terminals - they are not bonded internally and must remain unconnected on the PCB. Routing traces or applying solder to these pins may cause parasitic coupling or mechanical stress; leave them floating and avoid copper pours underneath per Analog Devices' layout guidance.
How does the shutdown function affect quiescent current in the ADP1109AN-12?
Applying a logic low (≤0.8 V) to the SHUTDOWN pin (Pin 7) disables the oscillator and reduces the ADP1109AN-12's quiescent current to 450 µA - identical to its "switch off" specification. This state maintains all internal bias but halts switching, enabling ultra-low-power standby in battery-critical applications like pagers and backup supplies.
ADP1109AN-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
ADP1109AN-12 FAQ
1.How can I place an order for ADP1109AN-12 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADP1109AN-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 ADP1109AN-12 reliable?
The price and inventory of ADP1109AN-12 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADP1109AN-12 is usually 5 days.
3.What payment methods are accepted for ADP1109AN-12?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADP1109AN-12 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADP1109AN-12?
ADP1109AN-12 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADP1109AN-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 ADP1109AN-12?
For technical support, including ADP1109AN-12 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADP1109AN-12 requirements.
6.How does Aetrix verify that ADP1109AN-12 is sourced from the original manufacturer or authorized distributors?
All ADP1109AN-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 ADP1109AN-12 meets industry standards.
7.What is the process for return or replacement of ADP1109AN-12?
All ADP1109AN-12 units undergo pre-shipment inspection (PSI). If there is an issue with ADP1109AN-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 ADP1109AN-12 part is unused and in its original packaging.
Return procedure for ADP1109AN-12:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ADP1109AN-12 Tags
-
TPS562201DDCR
Texas Instruments
-
MC34063ABD-TR
STMicroelectronics
-
TPS561201DDCR
Texas Instruments
-
MC33063ADR
Texas Instruments
-
MC34063ADR
Texas Instruments
-
TPS560200DBVR
Texas Instruments
-
AP3012KTR-G1
Diodes Incorporated
-
TLV61048DBVR
Texas Instruments
-
AZ34063UMTR-G1
Diodes Incorporated
-
TPS562200DDCR
Texas Instruments
-
AP62300TWU-7
Diodes Incorporated
-
MC34063EBD-TR
STMicroelectronics
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
