My Inquiry
My Account
Analog Devices Inc. ADP1110AR-3.3
- Part No.:
- ADP1110AR-3.3
- Manufacturer:
- Analog Devices Inc.
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
ADP1110AR-3.3.pdf
- Description:
- IC REG BUCK BOOST 3.3V 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:9,011
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
ADP1110AR-3.3 from Analog Devices is a micropower, fixed-output 3.3 V step-up/step-down switching regulator IC designed for single-cell battery systems. It operates from 1.0 V to 30 V input, delivers regulated 3.3 V output with ±5% tolerance (3.13–3.47 V), features 300 µA quiescent current, 70 kHz oscillator frequency, and internal power switch with adjustable current limiting via ILIM pin.
For engineers reviewing the ADP1110AR-3.3 datasheet, ADP1110AR-3.3 pinout, ADP1110AR-3.3 application, or ADP1110AR-3.3 equivalent, this page provides verified functional identity, SO-8 package mapping, confirmed 3.3 V fixed-output behavior, validated step-up/step-down topology support, and real-world design constraints including SW2 voltage limit (–350 mV) and reverse-battery protection up to –1.6 V.
Technical Context
The ADP1110AR-3.3 implements a gated-oscillator control architecture with internal 220 mV reference and comparator hysteresis (66–130 mV), enabling stable regulation without external compensation. Its dual-mode operation relies on external pin configuration: SW1 connected to inductor/diode and SW2 grounded for step-up; SW1 tied to VIN and SW2 driving inductor for step-down.
It integrates an uncommitted gain block (A0/A1/A2) usable as low-battery detector via SET pin and open-collector AO output (300 µA sink capability), while the ILIM pin enables user-defined current limiting (e.g., 400 mA with 220 Ω resistor). Switch saturation voltage is 300–500 mV at 400 mA (VIN = 1.5 V, +25°C).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.3 V ±5% (3.13–3.47 V); no external feedback resistors required - simplifies BOM and layout for 3.3 V rail generation. |
| Input Voltage Range | 1.0 V to 30 V; supports single alkaline/NiMH cell (≥1.0 V operation) and wide industrial input sources. |
| Quiescent Current | 300 µA typical; enables >1-year battery life in low-duty-cycle portable instruments and remote sensors. |
| Oscillator Frequency | 52–90 kHz (typ. 70 kHz); allows use of low-cost, high-value surface-mount inductors (e.g., 47 µH) and avoids EMI-sensitive bands. |
| Switch Saturation Voltage | 300–500 mV at 400 mA (VIN = 1.5 V); limits conduction loss and thermal rise in step-up mode at low input voltages. |
| Output Hysteresis | 66–130 mV; ensures loop stability and prevents oscillation during light-load transitions without external compensation. |
| Reverse Battery Protection | Withstands –1.6 V applied to GND/SW2 pins continuously; prevents damage during battery insertion reversal in handheld devices. |
Pinout & Package
ADP1110AR-3.3 is housed in an 8-lead SOIC (SO-8) package with standard JEDEC MS-012AC footprint (5.0 mm × 6.2 mm, 1.27 mm pitch). Pin 1 marked by notch or dot; exposed pad not present.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - A0 | Auxiliary gain amplifier output | Open-collector NPN; sinks 300 µA max; used for low-battery detection or linear regulation - requires external pull-up. |
| 2 - ILIM | Current limit programming input | Resistor between ILIM and VIN sets peak switch current (e.g., 220 Ω → 400 mA); connect directly to VIN for full 1.5 A rating. |
| 3 - SW1 | Internal switch collector | In step-up: drives inductor; in step-down: connects to VIN - defines topology via external wiring, not internal logic. |
| 4 - GND | Power and signal ground reference | Common return for all internal blocks; must be low-impedance path to minimize noise coupling into FB/SET pins. |
| 5 - VIN | Main input supply connection | Accepts 1.0–30 V; powers internal circuitry and switch; decoupling capacitor (≥10 µF) required within 2 inches of pin. |
| 6 - SW2 | Internal switch emitter | In step-up: connects to GND; in step-down: drives inductor - voltage must not fall below –350 mV (absolute max –0.5 V). |
| 7 - FB (SENSE) | Output voltage sense input | Internally connected to laser-trimmed divider for 3.3 V output; connect directly to regulated output - no external resistors needed. |
| 8 - SET | Gain amplifier non-inverting input | Accepts resistor divider from VIN to GND for low-battery threshold; bias current 300–500 nA - high-impedance node. |
Key Features
| Feature | Design Value |
|---|---|
| Micropower operation | 300 µA quiescent current enables multi-year battery life in always-on portable instrumentation and wireless sensors. |
| Dual-mode topology support | Single IC supports both step-up (e.g., 1.5 V → 3.3 V) and step-down (e.g., 9 V → 3.3 V) via pin-strapping - reduces inventory and design cycle time. |
| Integrated current limiting | User-configurable switch current limit (via ILIM resistor) protects against overload and short-circuit conditions without external sensing components. |
| Low-battery detection capability | On-chip gain block (SET/AO) provides programmable undervoltage warning - eliminates need for discrete comparator in battery-powered systems. |
| Reverse battery immunity | Guaranteed operation with –1.6 V applied to GND/SW2 pins - prevents field failures due to incorrect battery installation in consumer devices. |
Applications
| Hand-Held Inventory Computers | Portable Instruments |
|---|---|
Use Scenario: Powering 3.3 V microcontroller and RF transceiver from single AA/AAA alkaline cell during barcode scanning. IC Role / Device Role / Timing Role: Step-up regulator generating stable 3.3 V rail from decaying 1.5 V–0.9 V cell voltage; maintains system operation down to 1.0 V input. Use Value: Eliminates need for multi-cell packs or charge-pump ICs; extends usable battery life by 35% vs. linear regulators at same load. |
Use Scenario: Supplying 3.3 V analog front-end and ADC in battery-operated multimeter or environmental sensor. IC Role / Device Role / Timing Role: Low-noise, low-quiescent-current regulator supporting precision measurement during intermittent sampling cycles. Use Value: 300 µA IQ enables >2-year shelf life; 66–130 mV output hysteresis prevents false triggering during transient load steps. |
| Laser Diode Drivers | Battery Backup Supplies |
Use Scenario: Providing 3.3 V bias for TTL-level laser diode modulation circuit in portable barcode scanners. IC Role / Device Role / Timing Role: Step-down regulator converting 5 V USB or 9 V battery to clean 3.3 V supply; handles pulsed 500 mA loads. Use Value: 500 mV VCE(SAT) at 400 mA minimizes heat dissipation in compact enclosures; SO-8 package allows dense PCB layout. |
Use Scenario: Maintaining 3.3 V SRAM or real-time clock during AC power failure in industrial controllers. IC Role / Device Role / Timing Role: Step-up regulator sourcing 3.3 V from backup lithium coin cell (e.g., CR2032) during main power outage. Use Value: 1.0 V start-up capability ensures reliable hold-up even as backup cell depletes to end-of-life voltage (≈1.1 V). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar switching regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX1722EUT+T | Fixed 3.3 V output; 1.8–5.5 V input range; 1.2 MHz switching; 19 µA IQ; no ILIM or AO pins. | Optimized for ultra-low-IQ, high-frequency applications with tight space constraints; lacks current limiting and low-battery detection. | Select MAX1722EUT+T when minimizing standby power is critical and external protection/detection circuits are acceptable. |
| TPS61200DRCR | Adjustable 1.2–5.5 V output; 0.3–5.5 V input; 1.2 MHz; 50 µA IQ; integrated soft-start; no ILIM pin. | Supports wider input range down to 0.3 V but requires external feedback resistors; lacks reverse-battery protection and AO output. | Select TPS61200DRCR when input voltage may drop below 1.0 V or when adjustable output is needed; verify SW2 voltage compliance separately. |
Compared with MAX1722EUT+T and TPS61200DRCR, the ADP1110AR-3.3 uniquely combines 1.0 V start-up, SO-8 pin-compatible dual-mode operation, user-programmable current limiting, and integrated low-battery detection - making it optimal for cost-sensitive, battery-first designs requiring robustness and feature integration without external components.
Availability
ADP1110AR-3.3 is available at Aetrix Electronics and suitable for handheld computing, portable instrumentation, laser diode biasing, and battery backup systems requiring stable component supply across long production lifecycles.
Supply support for ADP1110AR-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, serving industrial, automotive, communications, and healthcare markets since 1965.
The ADP1110AR-3.3 belongs to Analog Devices' micropower DC/DC converter product line, engineered specifically for energy-constrained portable and battery-powered systems where input voltage varies widely and reliability under reverse-polarity conditions is essential.
FAQ
What is the minimum input voltage required for ADP1110AR-3.3 to regulate 3.3 V output?
The ADP1110AR-3.3 starts regulation at 1.0 V input and maintains 3.3 V output down to this threshold in step-up mode. At VIN = 1.0 V, output remains within specification (3.13–3.47 V) under light load; full 3.3 V regulation at 100 mA load requires VIN ≥ 1.15 V per datasheet limits. This enables direct use with single alkaline or NiMH cells throughout their discharge curve.
Can ADP1110AR-3.3 be used in step-down mode, and what are the key wiring differences versus step-up?
Yes, ADP1110AR-3.3 supports step-down operation: connect SW1 to VIN, SW2 to inductor (not GND), and place diode between SW2 and output. Unlike step-up, SW2 becomes the active switching node and must not fall below –350 mV - requiring Schottky diodes (e.g., 1N5818) to avoid violating absolute maximum ratings. Output voltage remains fixed at 3.3 V regardless of topology.
Does ADP1110AR-3.3 require external feedback resistors to set its 3.3 V output?
No. The ADP1110AR-3.3 integrates laser-trimmed internal resistors that fix the output at 3.3 V; the FB (SENSE) pin connects directly to the output node with no external components. This differs from the adjustable ADP1110AN/AR versions, which require R1/R2 dividers to set VOUT = 220 mV × (1 + R1/R2).
How does the ILIM pin function on ADP1110AR-3.3, and what resistor value sets 400 mA current limit?
The ILIM pin adjusts peak switch current by sensing voltage drop across an external resistor between ILIM and VIN. A 220 Ω resistor sets 400 mA limit per Figure 6 in the datasheet. Connecting ILIM directly to VIN enables full 1.5 A switch rating. This feature protects the IC and external components during overload or short-circuit events without needing sense resistors or op-amps.
Is ADP1110AR-3.3 protected against reverse battery connection, and what is the rated limit?
Yes. The ADP1110AR-3.3 is guaranteed to withstand continuous application of –1.6 V to GND and SW2 pins while VIN, ILIM, and SW1 remain grounded - per Absolute Maximum Ratings table. This reverse-battery immunity prevents latch-up or permanent damage during field-level battery replacement errors in consumer and industrial handheld devices.
ADP1110AR-3.3 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):
- 3.3V
- 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-3.3 FAQ
1.How can I place an order for ADP1110AR-3.3 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADP1110AR-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 ADP1110AR-3.3 reliable?
The price and inventory of ADP1110AR-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 ADP1110AR-3.3 is usually 5 days.
3.What payment methods are accepted for ADP1110AR-3.3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADP1110AR-3.3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADP1110AR-3.3?
ADP1110AR-3.3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADP1110AR-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 ADP1110AR-3.3?
For technical support, including ADP1110AR-3.3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADP1110AR-3.3 requirements.
6.How does Aetrix verify that ADP1110AR-3.3 is sourced from the original manufacturer or authorized distributors?
All ADP1110AR-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 ADP1110AR-3.3 meets industry standards.
7.What is the process for return or replacement of ADP1110AR-3.3?
All ADP1110AR-3.3 units undergo pre-shipment inspection (PSI). If there is an issue with ADP1110AR-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 ADP1110AR-3.3 part is unused and in its original packaging.
Return procedure for ADP1110AR-3.3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ADP1110AR-3.3 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…
