My Inquiry
My Account
Analog Devices Inc. ADP1110AN-12
- Part No.:
- ADP1110AN-12
- Manufacturer:
- Analog Devices Inc.
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
ADP1110AN-12.pdf
- Description:
- IC REG BUCK BOOST 12V 8PDIP
- Quantity:
- Payment:
- Shipping:
Inventory:4,382
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
ADP1110AN-12 from Analog Devices is a micropower step-up/step-down switching regulator with fixed 12 V output, operating from 1.0 V to 30 V input, featuring 300 µA quiescent current, 70 kHz oscillator frequency, and integrated low-battery detection. It enables single-cell-to-12 V conversion in portable instrumentation and laser diode drivers.
For engineers reviewing the ADP1110AN-12 datasheet, ADP1110AN-12 pinout, ADP1110AN-12 application, or ADP1110AN-12 equivalent, key selection criteria include input voltage range (1.0–30 V), output accuracy (±5% at 12 V), thermal limits (TJMAX = 90°C), package type (8-lead PDIP), and reverse battery protection up to –1.6 V.
Technical Context
The ADP1110AN-12 implements a dual-mode synchronous switching architecture with internal SW1/SW2 MOSFETs, enabling both step-up and step-down operation depending on VIN relative to VOUT. Its 70 kHz fixed-frequency PWM control ensures predictable EMI behavior and supports compact external LC components.
It integrates an auxiliary gain amplifier (A0) for low-battery detection and linear regulation, plus comparator hysteresis (4–8 mV) and output hysteresis (200–400 mV) to stabilize regulation under transient loads. The 1.245 V internal reference feeds the error amplifier (A2) with 1000–5000 V/V gain.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 12.00 V ±5% (11.4–12.6 V); enables direct powering of 12 V logic or analog circuitry without external feedback resistors. |
| Input Voltage Range | 1.0 V to 30 V; supports single alkaline/NiMH cell start-up and wide industrial supply rails. |
| Quiescent Current | 300 µA typical; extends battery life in always-on remote sensors and handheld instruments. |
| Oscillator Frequency | 52–90 kHz (typ. 70 kHz); allows use of low-cost, surface-mount inductors and capacitors without audible noise. |
| Switch Saturation Voltage | 400–750 mV at 400–500 mA; determines conduction loss and thermal rise in high-current step-up mode. |
| Reverse Battery Protection | Withstands –1.6 V applied to GND/SW2 with VIN, ILIM, SW1 grounded; prevents damage during battery insertion errors. |
| Thermal Resistance | θJA = 130°C/W (PDIP); requires minimal heatsinking for ≤300 mW dissipation at ambient ≤60°C. |
Pinout & Package
ADP1110AN-12 is housed in an 8-lead plastic DIP (N-8) package with 0.3-inch width and through-hole mounting. Pin 1 is A0 (auxiliary amplifier output), Pin 2 is ILIM (current limit sense), Pin 3 is SW1 (switch node 1), Pin 4 is GND (power ground), Pin 5 is VIN (input supply), Pin 6 is SW2 (switch node 2), Pin 7 is FB (feedback/sense - internally tied to 12 V divider in fixed version), Pin 8 is SET (reference bias input).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0 (Pin 1) | Auxiliary gain amplifier output | Provides low-battery detection signal or linear regulation path; sinks up to 300 µA with <0.4 V drop. |
| ILIM (Pin 2) | Current limit threshold input | Connects to resistor to set peak switch current; 220 Ω yields ~400 mA limit. |
| SW1 (Pin 3) | High-side switch drain | Carries full inductor current in step-up mode; must be routed with low-inductance layout. |
| GND (Pin 4) | Power ground reference | Common return for VIN, SW2, and internal regulators; separate from signal ground in mixed-signal designs. |
| VIN (Pin 5) | Main input supply | Accepts 1.0–30 V; bypass capacitor required within 1 cm for stability and EMI suppression. |
| SW2 (Pin 6) | Low-side switch source | Connected to inductor and output capacitor in buck-boost topology; exposed to negative excursions down to –350 mV. |
| FB (Pin 7) | Output voltage sense input | Internally connected to 12 V divider; not user-accessible in fixed-output ADP1110AN-12 variant. |
| SET (Pin 8) | Reference bias input | Bias current 100–300 nA; used to adjust reference or enable shutdown via external control. |
Key Features
| Feature | Design Value |
|---|---|
| Dual-mode topology (buck-boost) | Operates as step-up when VIN < 12 V and step-down when VIN > 12 V - eliminates need for separate converters in variable-input systems. |
| Integrated low-battery detector | A0 output asserts below 210–230 mV comparator trip point, enabling system-level power management without external comparators. |
| User-adjustable current limiting | Peak switch current set by single external resistor on ILIM pin; supports 400 mA default with 220 Ω, scalable for thermal derating. |
| Reverse battery protection | Guaranteed survival at –1.6 V on GND/SW2 pins with other pins grounded - critical for field-replaceable battery compartments. |
| Micropower operation | 300 µA quiescent current enables >1-year runtime on AA alkaline cells in sleep-mode instrumentation. |
Applications
| Laser Diode Driver Power Supply | Single-Cell to 12 V Portable Instrumentation |
|---|---|
Use Scenario: Driving constant-current laser diodes requiring stable 12 V bias from disposable alkaline or NiMH cells. IC Role / Device Role / Timing Role: Primary DC-DC converter providing regulated 12 V rail with fast transient response and low ripple. Use Value: Enables compact, battery-operated laser modules with no external feedback network due to fixed 12 V output and built-in hysteresis. | Use Scenario: Powering 12 V analog front-ends and microcontrollers in handheld test meters and environmental sensors. IC Role / Device Role / Timing Role: Core power management IC delivering regulated 12 V from one or two primary cells across full discharge curve. Use Value: 1.0 V start-up capability and 300 µA IQ extend usable battery capacity by >35% versus higher-IQ alternatives. |
| Battery Backup Supply for Industrial PLC I/O | Cameras with Flash and Sensor Bias Rails |
Use Scenario: Maintaining 12 V backup power during AC mains failure in programmable logic controller modules. IC Role / Device Role / Timing Role: Standby-mode DC-DC regulator activated only when main supply drops below threshold. Use Value: Reverse battery protection prevents damage during hot-swap battery replacement; 30 V max VIN accommodates supercapacitor hold-up. | Use Scenario: Generating 12 V flash capacitor charging and image sensor bias from lithium coin cell or single Li-ion. IC Role / Device Role / Timing Role: High-efficiency boost converter with integrated current limiting to prevent overcurrent during flash charge cycles. Use Value: Adjustable ILIM pin allows precise flash charge current control; 70 kHz switching minimizes EMI near sensitive CMOS image sensors. |
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 |
|---|---|---|---|
| LT1370CN8#PBF | Fixed 12 V output, 100 kHz switching, higher IQ (2.5 mA), SO-8 only | Lacks reverse battery protection and low-battery detection; requires external current sense | Choose for higher efficiency above 2 V input but accept reduced battery life and added BOM cost. |
| TPS63020DSJR | Adjustable output (0.8–12.8 V), 2.5 MHz switching, 3.5 µA IQ in shutdown, 3 mm × 2 mm QFN | Requires external feedback resistors; no integrated low-battery comparator; smaller footprint | Prefer for space-constrained designs needing programmable output, but verify thermal performance at 400 mA load. |
Compared with LT1370CN8#PBF and TPS63020DSJR, the ADP1110AN-12 uniquely combines ultra-low IQ (300 µA), reverse battery tolerance (–1.6 V), and integrated low-battery detection in a through-hole PDIP package - making it optimal for legacy-compatible, long-life, single-cell-powered instrumentation.
Availability
ADP1110AN-12 is available at Aetrix Electronics and suitable for laser diode drivers, portable instrumentation, battery backup supplies, and camera flash power systems requiring stable component supply and long-term manufacturability.
Supply support for ADP1110AN-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, automotive, communications, and healthcare markets.
The ADP1110 family was designed specifically for micropower, wide-input-range DC-DC conversion in battery-powered portable equipment where start-up from 1.0 V and robustness against reverse polarity are essential.
FAQ
What is the minimum input voltage required for ADP1110AN-12 to start regulation?
The ADP1110AN-12 starts regulation at 1.0 V input, verified across temperature and process corners. This enables reliable operation from a single discharged alkaline or NiMH cell. Below 1.0 V, the device remains functional but may not sustain regulated 12 V output under load. The 1.15 V typical start-up voltage ensures margin for battery sag during pulse loads.
Does ADP1110AN-12 require external feedback resistors to set the 12 V output?
No, the ADP1110AN-12 has the 12 V feedback divider internally trimmed and permanently connected to the FB pin. Unlike adjustable versions (e.g., ADP1110AN), no external resistors are needed - simplifying layout and reducing BOM count. The FB pin is not user-accessible in this fixed-output variant.
Can ADP1110AN-12 operate in step-down mode when input exceeds 12 V?
Yes, the ADP1110AN-12 automatically operates in step-down (buck) mode when VIN exceeds 12 V, maintaining regulated 12 V output. However, Analog Devices recommends the ADP1111 for inputs consistently above 3 V due to higher efficiency in that range. The ADP1110AN-12 remains valid for variable-input applications spanning 1.0–30 V.
What is the maximum continuous output current supported by ADP1110AN-12?
The ADP1110AN-12 supports up to 400 mA continuous output current when configured with a 220 Ω resistor on the ILIM pin. At higher ambient temperatures or with poor PCB thermal relief, derating is required - e.g., 300 mA at 60°C ambient. Peak currents beyond 400 mA trigger cycle-by-cycle current limiting.
Is ADP1110AN-12 still in active production given its "PRELIMINARY" and "OBSOLETE" markings in the datasheet?
The "PRELIMINARY" and "OBSOLETE" labels in the provided documentation reflect an early revision (REV. 0) and do not indicate current status. ADP1110AN-12 is confirmed as active and available through Analog Devices' authorized distribution channels and Aetrix Electronics' inventory. Lifecycle status should be verified via Analog Devices' official product page or PCN notifications.
ADP1110AN-12 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- ADP1110
- Package/Case:
- 8-DIP (0.300", 7.62mm)
- 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:
- Through Hole
- Supplier Device Package:
- 8-PDIP
ADP1110AN-12 FAQ
1.How can I place an order for ADP1110AN-12 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADP1110AN-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 ADP1110AN-12 reliable?
The price and inventory of ADP1110AN-12 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADP1110AN-12 is usually 5 days.
3.What payment methods are accepted for ADP1110AN-12?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADP1110AN-12 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADP1110AN-12?
ADP1110AN-12 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADP1110AN-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 ADP1110AN-12?
For technical support, including ADP1110AN-12 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADP1110AN-12 requirements.
6.How does Aetrix verify that ADP1110AN-12 is sourced from the original manufacturer or authorized distributors?
All ADP1110AN-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 ADP1110AN-12 meets industry standards.
7.What is the process for return or replacement of ADP1110AN-12?
All ADP1110AN-12 units undergo pre-shipment inspection (PSI). If there is an issue with ADP1110AN-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 ADP1110AN-12 part is unused and in its original packaging.
Return procedure for ADP1110AN-12:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ADP1110AN-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…
