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Analog Devices Inc. ADP1110AR-12
- Part No.:
- ADP1110AR-12
- Manufacturer:
- Analog Devices Inc.
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
ADP1110AR-12.pdf
- Description:
- IC REG BUCK BOOST 12V 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:6,138
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Product details
Overview
ADP1110AR-12 from Analog Devices is a micropower step-up/step-down switching regulator configured for fixed 12 V output, operating from 1.0 V to 30 V input, delivering up to 400 mA with 70 kHz switching frequency and 300 µA quiescent current-used in single-cell battery-powered laser diode drivers and portable instrumentation.
For engineers reviewing the ADP1110AR-12 datasheet, ADP1110AR-12 pinout, ADP1110AR-12 application, or ADP1110AR-12 equivalent, key selection criteria include input voltage range (1.0–30 V), fixed 12 V ±5% output tolerance, SOIC-8 package thermal resistance (θJA = 150°C/W), reverse battery protection (up to –1.6 V), and adjustable current limit via ILIM pin.
Technical Context
The ADP1110AR-12 implements a dual-switch buck-boost topology with integrated NPN/PNP power switches (SW1/SW2), oscillator-controlled 70 kHz operation, and internal 1.245 V reference. Its auxiliary gain amplifier (A0) supports low-battery detection and linear regulation functions independent of main regulation path.
It features comparator-based feedback control with 220 mV trip point and 4–8 mV hysteresis, output sense voltage accuracy of 11.4–12.6 V at full load, and switch saturation voltage as low as 400 mV at 400 mA in step-up mode with 1.5 V input.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 12 V ±5% (11.4–12.6 V), enabling stable bias for laser diodes and analog sensors without external resistor divider. |
| Input Voltage Range | 1.0 V to 30 V, supporting single-cell alkaline/NiMH (1.0–1.5 V) and multi-cell or industrial supply inputs. |
| Quiescent Current | 300 µA typical, minimizing standby power loss in battery-backed portable instruments. |
| Switching Frequency | 70 kHz nominal (52–90 kHz), allowing use of compact surface-mount inductors and capacitors without EMI filtering overhead. |
| Current Limit | 400 mA maximum (set by 220 Ω resistor from ILIM to VIN), protecting against short-circuit and overload conditions. |
| Thermal Resistance | θJA = 150°C/W (SOIC-8), requiring minimal PCB copper area for thermal management in handheld devices. |
| Reverse Battery Protection | Withstands –1.6 V applied to GND/SW2 pins continuously, preventing damage during battery insertion errors. |
Pinout & Package
ADP1110AR-12 is housed in an 8-lead SOIC (SO-8) package with exposed pad not electrically connected; JEDEC MS-012AC compliant, 150°C/W junction-to-ambient thermal resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0 | Auxiliary amplifier output | Provides low-battery detection signal or linear regulation output; open-drain capable with 0.4 V max low-level voltage at 300 µA sink. |
| ILIM | Current limit programming input | Resistor-connected node setting peak switch current; 220 Ω to VIN yields 400 mA limit. |
| SW1 | Main switch collector (NPN) | High-side switching node; rated for –400 mV undershoot during turn-off with <10 µA leakage. |
| GND | Power and signal ground reference | Common return for all internal circuits; reverse battery protection active on this pin. |
| VIN | Main power input | Accepts 1.0–30 V; supplies internal bias and sets current limit threshold via ILIM resistor. |
| SW2 | Secondary switch emitter (PNP) | Low-side switching node; shares reverse protection spec with GND pin (–1.6 V max). |
| FB (SENSE) | Output voltage feedback input | Monitors regulated 12 V output via internal 1.245 V reference; 70–150 nA bias current enables high-impedance sensing. |
| SET | Reference enable and gain control | Enables internal reference when pulled above 150 mV; 100–300 nA bias current sets A2 error amp gain. |
Key Features
| Feature | Design Value |
|---|---|
| Dual-mode buck-boost topology | Operates in step-up or step-down mode from same IC, eliminating need for separate converters in variable-input systems. |
| User-adjustable current limiting | Set precisely via external resistor on ILIM pin-no trimming required for production calibration. |
| Integrated low-battery detector | A0 amplifier outputs logic-low signal when input drops below 220 mV comparator threshold, enabling system shutdown before brownout. |
| Reverse battery protection | Guaranteed survival at –1.6 V on GND/SW2 pins, removing need for external series diode or MOSFET protection circuitry. |
| Micropower operation | 300 µA quiescent current extends battery life in always-on portable instruments and remote sensors. |
Applications
| Laser Diode Driver Power Supply | Single-Cell to 12 V Portable Instrumentation |
|---|---|
Use Scenario: Driving constant-current laser diodes in handheld barcode scanners requiring stable 12 V bias from a single NiMH cell. IC Role / Device Role / Timing Role: Primary DC-DC converter providing regulated 12 V output with fast transient response and low noise. Use Value: Enables direct single-cell operation without voltage doubling stages, reducing BOM count and board space by 30% versus discrete solutions. | Use Scenario: Powering analog front-end circuitry in portable gas analyzers powered by one AA alkaline cell (1.0–1.5 V). IC Role / Device Role / Timing Role: Step-up regulator generating precise 12 V rail for op-amp bias and sensor excitation. Use Value: Maintains regulation down to 1.0 V input, extending usable battery life by >25% compared to 1.2 V cutoff alternatives. |
| Battery Backup Supply for Industrial Controllers | Hand-Held Inventory Computer Power Management |
Use Scenario: Providing fail-safe 12 V backup during AC mains interruption in programmable logic controllers with supercapacitor hold-up. IC Role / Device Role / Timing Role: Low-quiescent-current buck-boost converter sustaining critical memory and real-time clock during brownout. Use Value: 300 µA IQ allows >72-hour hold-up time using 0.47 F supercapacitor, eliminating need for secondary battery. | Use Scenario: Powering display backlight and RF module in ruggedized warehouse inventory scanners using replaceable AA batteries. IC Role / Device Role / Timing Role: Main power regulator supporting dynamic load steps from 10 mA (idle) to 400 mA (transmit burst). Use Value: 70 kHz switching enables ceramic capacitor use, reducing ripple to <50 mVpp and improving display contrast stability. |
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 |
|---|---|---|---|
| LT3467EMS-12 | Fixed 12 V output, 1.2 MHz switching, 2.7–20 V input, 350 mA max, 1.2 mm × 1.6 mm DFN package. | Higher frequency enables smaller magnetics but increases EMI sensitivity; lower max current limits laser diode drive capability. | Prefer for space-constrained designs where 350 mA suffices and EMI filtering is feasible. |
| TPS63020DSJR | Adjustable/fixed 12 V option, 2.5–5.5 V input, 2 A max, 2.5 MHz, integrated switches, 3.5 mm × 3.5 mm QFN. | Cannot operate below 2.5 V input-unsuitable for single-cell alkaline/NiMH start-up; higher current capability over-specified for most ADP1110AR-12 use cases. | Choose only when input is guaranteed ≥2.5 V and >400 mA load is required; otherwise ADP1110AR-12 offers better low-VIN performance. |
Compared with LT3467EMS-12 and TPS63020DSJR, ADP1110AR-12 uniquely supports 1.0 V start-up and delivers 400 mA at ultra-low quiescent current-making it optimal for legacy single-cell battery systems where size and EMI are secondary to runtime and cold-start reliability.
Availability
ADP1110AR-12 is available at Aetrix Electronics and suitable for laser diode drivers, portable instrumentation, battery backup supplies, and hand-held inventory computers requiring stable component supply across extended product lifecycles.
Supply support for ADP1110AR-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 industrial, communications, automotive, and consumer markets.
The ADP1110 family was designed specifically for ultra-low-input-voltage, micropower DC-DC conversion in battery-powered portable equipment-emphasizing start-up from single-cell sources and integrated protection features.
FAQ
What input voltage range does the ADP1110AR-12 support?
The ADP1110AR-12 supports an input voltage range of 1.0 V to 30 V. This wide range enables operation from a single alkaline or NiMH cell (1.0–1.5 V) up to industrial 24 V rails. The device maintains regulation across this span in either step-up or step-down mode, with guaranteed functionality down to 1.0 V as specified in the preliminary datasheet.
Is the ADP1110AR-12 pin-compatible with other members of the ADP1110 family?
Yes, the ADP1110AR-12 shares identical SOIC-8 pinout and terminal functions with ADP1110AR, ADP1110AR-5, and other AR-suffix variants. All ADP1110AR-x parts use the same 8-pin layout, including matching FB, SET, ILIM, SW1, SW2, VIN, GND, and A0 connections-allowing board-level substitution between fixed-output versions without layout changes.
Does the ADP1110AR-12 require external components for basic operation?
Yes, the ADP1110AR-12 requires external inductor, output capacitor, input capacitor, and an ILIM-setting resistor for current limiting. No external feedback resistors are needed since it is a fixed 12 V version. The SOIC-8 package integrates all control circuitry, but passive magnetics and filtering remain necessary per the functional block diagram and application schematics in the datasheet.
What is the thermal performance of the ADP1110AR-12 in SOIC-8 package?
The ADP1110AR-12 in SOIC-8 has a junction-to-ambient thermal resistance (θJA) of 150°C/W. At maximum 400 mA load and 12 V output, power dissipation remains low due to efficient switching, but PCB copper area and airflow should be considered for continuous operation near TJMAX = 90°C-especially when input voltage is low and duty cycle high.
How does the ADP1110AR-12 implement reverse battery protection?
The ADP1110AR-12 guarantees survival when –1.6 V is applied to its GND and SW2 pins while VIN, ILIM, and SW1 are grounded. This internal protection eliminates the need for external series diodes or MOSFETs in battery-reversal-prone applications like hand-held scanners, reducing forward voltage drop and power loss in the main path.
ADP1110AR-12 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- ADP1110
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Bulk
- Product Status:
- Active
- Function:
- Step-Up/Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck-Boost
- Output Type:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 1V
- Voltage - Input (Max):
- 30V
- Voltage - Output (Min/Fixed):
- 12V
- Voltage - Output (Max):
- -
- Current - Output:
- -
- Frequency - Switching:
- 70kHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
ADP1110AR-12 FAQ
1.How can I place an order for ADP1110AR-12 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADP1110AR-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 ADP1110AR-12 reliable?
The price and inventory of ADP1110AR-12 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADP1110AR-12 is usually 5 days.
3.What payment methods are accepted for ADP1110AR-12?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADP1110AR-12 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADP1110AR-12?
ADP1110AR-12 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADP1110AR-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 ADP1110AR-12?
For technical support, including ADP1110AR-12 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADP1110AR-12 requirements.
6.How does Aetrix verify that ADP1110AR-12 is sourced from the original manufacturer or authorized distributors?
All ADP1110AR-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 ADP1110AR-12 meets industry standards.
7.What is the process for return or replacement of ADP1110AR-12?
All ADP1110AR-12 units undergo pre-shipment inspection (PSI). If there is an issue with ADP1110AR-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 ADP1110AR-12 part is unused and in its original packaging.
Return procedure for ADP1110AR-12:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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