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Analog Devices Inc. ADP1110AN-5
- Part No.:
- ADP1110AN-5
- Manufacturer:
- Analog Devices Inc.
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
ADP1110AN-5.pdf
- Description:
- IC REG BUCK BOOST 5V 8PDIP
- Quantity:
- Payment:
- Shipping:
Inventory:8,135
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Product details
Overview
ADP1110AN-5 from Analog Devices is a micropower step-up/step-down switching regulator with fixed 5 V output, operating from 1.0 V to 30 V input, delivering up to 400 mA output current with 70 kHz switching frequency and 300 µA quiescent current. It is used in single-cell battery-powered portable instruments and laser diode drivers.
For engineers reviewing the ADP1110AN-5 datasheet, ADP1110AN-5 pinout, ADP1110AN-5 application, or ADP1110AN-5 equivalent, key selection factors include its fixed 5 V output tolerance (±5%), low-voltage start-up capability (1.0 V), reverse-battery protection (−350 mV min SW2 excursion), adjustable current limit via ILIM pin, and compatibility with surface-mount magnetics due to 70 kHz operation.
Technical Context
The ADP1110AN-5 integrates dual MOSFET switches (SW1/SW2), an error amplifier with 1.245 V internal reference, oscillator, comparator with 220 mV trip point and 8 mV hysteresis, and auxiliary gain block A0 for low-battery detection. Its architecture supports both buck and boost topologies depending on external component configuration.
It features built-in reverse-battery protection limiting reverse current to 750 mA at −1.6 V applied to GND/SW2, thermal shutdown at TJ = 90°C, and switch saturation voltage of 400 mV at 400 mA (VIN = 1.5 V). Output sense voltage is regulated to 5.00 V ±2.5% over temperature and line/load conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 5.00 V ±2.5% - ensures stable logic supply for microcontrollers or sensors without external feedback divider. |
| Input Voltage Range | 1.0 V to 30 V - enables direct use with single alkaline/NiMH cell (1.0–1.5 V) or higher-voltage battery stacks. |
| Max Output Current | 400 mA - determined by internal current limit set via 220 Ω resistor between ILIM and VIN; sufficient for small displays or RF modules. |
| Quiescent Current | 300 µA - minimizes standby power loss in always-on portable devices like pagers or hand-held scanners. |
| Switching Frequency | 70 kHz typical - allows use of low-cost, high-value surface-mount inductors and capacitors without EMI filtering overhead. |
| Feedback Sense Voltage | 1.245 V reference - sets regulation threshold at FB pin; fixed-output versions internally connect FB to reference for 5 V or 12 V output. |
| Oscillator Hysteresis | 8 mV - stabilizes switching duty cycle against noise, reducing output ripple during light-load transitions. |
Pinout & Package
ADP1110AN-5 is housed in an 8-lead plastic DIP (N-8) package with 0.3 inch body width and through-hole mounting. Thermal resistance θJA = 130°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (A0) | Auxiliary amplifier output | Provides low-battery detect signal or linear regulator control; sinks 300 µA with <0.4 V drop. |
| 2 (ILIM) | Current limit programming | Connects to VIN via 220 Ω resistor to set 400 mA peak switch current; open-circuit disables current limit. |
| 3 (SW1) | Main switch source/drain | Internal NPN collector node; connects to inductor in boost mode or to input in buck mode. |
| 4 (GND) | Power and signal ground | Common return for all internal circuits; must be low-impedance path to minimize noise coupling. |
| 5 (VIN) | Main power input | Accepts 1.0–30 V; powers internal bias circuitry and supplies current to ILIM resistor and switches. |
| 6 (SW2) | Secondary switch node | Internal NPN emitter; clamped to −350 mV below GND during reverse-battery fault; connects to inductor or output capacitor. |
| 7 (FB) | Output voltage sense | Internally tied to 1.245 V reference in fixed-5 V version; monitors regulated output via resistive divider in adjustable versions. |
| 8 (SET) | Error amplifier reference input | Connected internally to 1.245 V reference; unused in fixed-output variants but required for adjustable configurations. |
Key Features
| Feature | Design Value |
|---|---|
| Step-up/step-down topology support | Single IC replaces separate buck and boost regulators in space-constrained designs using shared inductor and control logic. |
| Low-battery detection via A0 amplifier | Enables system-level power management without external comparators; trip point set by external resistor divider on A0. |
| Reverse-battery protection | Withstands −1.6 V applied to GND/SW2 pins continuously; prevents damage when battery is inserted backward in consumer devices. |
| User-adjustable current limit | Allows precise overcurrent protection tuning via single resistor (220 Ω for 400 mA), improving reliability in varying load conditions. |
| Minimal external components | Requires only one inductor, two capacitors, and optional current-limit resistor - reduces BOM count and PCB area vs. discrete solutions. |
Applications
| Cellular Telephones | Laptop and Palmtop Computers |
|---|---|
Use Scenario: Powering baseband processor and RF transceiver from single NiMH cell (1.2 V nominal). IC Role / Device Role / Timing Role: Step-up regulator generating stable 5 V rail for analog front-end and memory interface. Use Value: Enables operation down to 1.0 V input, extending usable battery life by >15% compared to 1.5 V cutoff solutions. | Use Scenario: Providing auxiliary 5 V supply for USB peripherals or card readers in compact mobile computing platforms. IC Role / Device Role / Timing Role: Dual-mode regulator supporting both battery (boost) and adapter (buck) input sources without reconfiguration. Use Value: Eliminates need for separate buck and boost ICs, saving 22 mm² PCB area and simplifying power tree design. |
| Cameras | Laser Diode Drivers |
Use Scenario: Supplying image sensor and flash controller from primary lithium coin cell or AA pack. IC Role / Device Role / Timing Role: Micropower step-up converter maintaining 5 V output during burst-mode sensor readout. Use Value: 300 µA quiescent current extends shelf life of battery-powered security cameras beyond 12 months. | Use Scenario: Biasing laser diodes requiring tightly regulated 5 V with fast transient response in barcode scanners. IC Role / Device Role / Timing Role: Precision voltage regulator with low output hysteresis (90–180 mV) minimizing optical power ripple. Use Value: Maintains laser diode current stability within ±2% across input voltage swings from 1.2 V to 3.0 V. |
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 |
|---|---|---|---|
| MAX1703ESA+ | Fixed 5 V output, 2.7–5.5 V input range, 1.2 MHz switching, 100 mA max output. | Not suitable for sub-2.7 V inputs; optimized for Li-ion systems rather than single-cell alkaline/NiMH. | Select MAX1703ESA+ only if input stays ≥2.7 V and lower quiescent current (<100 µA) is critical. |
| TPS63020DSJR | Adjustable/fixed 3.3 V or 5 V output, 1.8–5.5 V input, 2 A output, 2.5 MHz switching, integrated switches. | Higher efficiency above 2 V input but lacks reverse-battery protection and 1.0 V start-up capability. | Choose TPS63020DSJR for higher-current applications (>500 mA) where input never drops below 1.8 V. |
Compared with MAX1703ESA+ and TPS63020DSJR, the ADP1110AN-5 uniquely supports 1.0 V start-up and reverse-battery tolerance, making it irreplaceable in ultra-low-voltage single-cell instrumentation where robustness and wide VIN range outweigh higher-frequency efficiency gains.
Availability
ADP1110AN-5 is available at Aetrix Electronics and suitable for cellular telephones, portable instruments, and laser diode drivers requiring stable component supply across extended product lifecycles.
Supply support for ADP1110AN-5 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 since 1965.
The ADP1110 family was designed specifically for ultra-low-input-voltage, micropower DC/DC conversion in battery-critical portable equipment - emphasizing start-up at 1.0 V, reverse-polarity resilience, and minimal external component count.
FAQ
What is the minimum input voltage required for ADP1110AN-5 to start regulation?
The ADP1110AN-5 starts regulation at 1.0 V input under all conditions, verified per preliminary datasheet specifications. This enables reliable operation from deeply discharged single-cell alkaline or NiMH batteries. The 1.0 V start-up threshold is guaranteed across temperature and load, and the device maintains regulation down to this level as long as output current remains within 400 mA limits. ADP1110AN-5 achieves this via specialized low-VBE bandgap and oscillator circuitry not found in standard buck-boost ICs.
Does ADP1110AN-5 require external feedback resistors to set the 5 V output?
No, ADP1110AN-5 does not require external feedback resistors because it is a fixed-output variant: the FB pin is internally connected to the 1.245 V reference to produce a regulated 5.00 V ±2.5% output. External resistors are only needed for adjustable versions (e.g., ADP1110AN). Using ADP1110AN-5 simplifies layout and eliminates resistor tolerance errors that affect output accuracy in adjustable configurations.
Can ADP1110AN-5 operate in step-down mode when input exceeds 5 V?
Yes, ADP1110AN-5 supports step-down operation for input voltages up to 30 V, though efficiency decreases above 12 V due to increased switch conduction losses. In buck mode, SW2 serves as the synchronous rectifier node and VIN connects directly to the output capacitor. The datasheet confirms full functionality in both modes, but recommends ADP1111 for inputs >3 V where higher efficiency is critical. ADP1110AN-5 remains valid for cost-sensitive or multi-mode designs needing single-part flexibility.
What protection features does ADP1110AN-5 include against reverse battery connection?
ADP1110AN-5 provides reverse-battery protection by limiting reverse current to 750 mA when −1.6 V is applied to GND and SW2 pins while VIN, ILIM, and SW1 are grounded. Its internal structure clamps SW2 to −350 mV below GND, preventing latch-up or junction breakdown. This protection is continuous and does not rely on external FETs or diodes. ADP1110AN-5 is one of few regulators rated for this level of reverse-polarity resilience, making it ideal for consumer handhelds with non-polarized battery compartments.
Is ADP1110AN-5 still in production or obsolete?
ADP1110AN-5 is marked "OBSOLETE" in the provided preliminary datasheet revision 0, indicating discontinuation by Analog Devices. However, Aetrix Electronics maintains legacy inventory and offers lifecycle availability coordination, including last-time-buy planning and cross-reference support. Customers designing new products should verify current status via Analog Devices' official product page or contact Aetrix for qualified alternatives. ADP1110AN-5 remains fully functional and supported for existing production programs.
ADP1110AN-5 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):
- 5V
- 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-5 FAQ
1.How can I place an order for ADP1110AN-5 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADP1110AN-5 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-5 reliable?
The price and inventory of ADP1110AN-5 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADP1110AN-5 is usually 5 days.
3.What payment methods are accepted for ADP1110AN-5?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADP1110AN-5 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADP1110AN-5?
ADP1110AN-5 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADP1110AN-5 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-5?
For technical support, including ADP1110AN-5 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADP1110AN-5 requirements.
6.How does Aetrix verify that ADP1110AN-5 is sourced from the original manufacturer or authorized distributors?
All ADP1110AN-5 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-5 meets industry standards.
7.What is the process for return or replacement of ADP1110AN-5?
All ADP1110AN-5 units undergo pre-shipment inspection (PSI). If there is an issue with ADP1110AN-5, 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-5 part is unused and in its original packaging.
Return procedure for ADP1110AN-5:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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