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Analog Devices Inc. ADP3000ARU-REEL
- Part No.:
- ADP3000ARU-REEL
- Manufacturer:
- Analog Devices Inc.
- Package:
- 14-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
ADP3000ARU-REEL.pdf
- Description:
- IC REG BUCK BST ADJ 1.5A 14TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:12,500
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Product details
Overview
ADP3000ARU-REEL from Analog Devices is a micropower step-up/step-down switching regulator in 14-lead TSSOP (RU-14) package, supporting input voltages from 2 V to 30 V and delivering up to 180 mA at 3.3 V in boost mode. It operates at 400 kHz with 500 µA shutdown quiescent current and integrates on-chip low-battery detection via auxiliary gain amplifier. Used in space-constrained portable power supplies such as palmtop computers and cellular telephones.
For engineers reviewing the ADP3000ARU-REEL datasheet, ADP3000ARU-REEL pinout, ADP3000ARU-REEL application, or ADP3000ARU-REEL equivalent, key selection criteria include its dual-mode topology (boost/buck), user-adjustable current limit, fixed/adjustable output options, thermal performance in RU-14 package, and compatibility with Schottky diodes and low-ESR tantalum capacitors.
Technical Context
The ADP3000ARU-REEL implements pulse frequency modulation (PFM) control with a gated 400 kHz oscillator and internal 1.245 V reference. Its comparator-based feedback loop uses hysteresis for stability without external compensation. The device features separate SW1 (collector) and SW2 (emitter) terminals enabling both step-up and step-down configurations through external component routing.
It includes an uncommitted auxiliary gain block (AO/SET pins) configurable as low-battery detector, error amplifier, or linear post-regulator, with open-collector AO output sinking ≥300 µA. Current limiting is programmable via ILIM pin using external resistor, with typical trip point of 400 mA when 220 Ω is connected between ILIM and VIN.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2 V–12 V (step-up), 2 V–30 V (step-down); supports single-cell Li-ion to multi-cell battery inputs. |
| Switching Frequency | 350–450 kHz typ.; enables use of compact 4.7–33 µH inductors and low-ESR tantalum capacitors. |
| Quiescent Current | 500 µA in shutdown; critical for battery life in always-on portable systems. |
| Output Voltage Options | Adjustable (via FB pin) or fixed 3.3 V / 5 V / 12 V; ADP3000ARU-REEL is adjustable version. |
| Current Limit | Programmable up to 1.5 A; 400 mA default with 220 Ω resistor; protects external inductor and diode. |
| Thermal Resistance | 150°C/W (RU-14); requires minimal PCB copper area for 70°C ambient operation at full load. |
| Operating Temperature | 0°C to +70°C; validated across industrial temperature range with stable oscillator and bias currents. |
Pinout & Package
ADP3000ARU-REEL is housed in a 14-lead thin shrink small-outline package (TSSOP, RU-14) with exposed pad for thermal enhancement. Pin 1 marked by dot; pin 1–7 on top row left-to-right, pin 8–14 on bottom row right-to-left per JEDEC MS-012AA.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| ILIM | Current limit programming input | Connect to VIN for max current (1.5 A); add 220 Ω resistor to VIN for 400 mA limit - prevents inductor saturation and diode overstress. |
| VIN | Main power input | Supplies internal circuitry and powers switch; accepts 2–30 V depending on mode; must be decoupled with ≥33 µF low-ESR capacitor. |
| SW1 | Power transistor collector | In step-up: drives inductor; in step-down: connects to input rail; rated to 50 V - supports high-voltage buck applications. |
| SW2 | Power transistor emitter | In step-up: tied to GND; in step-down: drives inductor; must not go >0.5 V below GND - requires Schottky clamp if VOUT >6 V. |
| FB (SENSE) | Feedback input | Connects to resistor divider for adjustable output; on fixed versions, internally tied to laser-trimmed divider - ADP3000ARU-REEL uses external resistors. |
| GND | Analog/digital ground reference | Common return for all signals; tie to low-impedance PCB ground plane; connect exposed pad to GND for thermal relief. |
| SET | Auxiliary amplifier non-inverting input | Accepts voltage divider from VIN for low-battery detection; bias current ≤400 nA - use ≥33 kΩ resistors to minimize error. |
| AO | Auxiliary amplifier open-collector output | Sinks ≥300 µA; pull-up required for logic-level interface; used for system wake-up or shutdown signaling. |
Key Features
| Feature | Design Value |
|---|---|
| Dual-mode topology | Single IC supports both step-up (2–12 V in → 3.3/5/12 V out) and step-down (2–30 V in → adjustable or fixed lower Vout) - reduces BOM count in multi-rail portable designs. |
| 400 kHz high-frequency switching | Enables use of <10 µH inductors (e.g., Sumida CR43-100) and 33–220 µF tantalum caps (e.g., AVX TPS D107), shrinking total solution size by >40% vs. 100 kHz controllers. |
| On-chip low-battery detector | Configurable via SET/AO pins without external comparators - generates system interrupt when VIN drops below user-defined threshold (e.g., 2.5 V for Li-ion cutoff). |
| User-adjustable current limit | Resistor-programmable from ~200 mA to 1.5 A - matches inductor saturation rating and optimizes efficiency across load range without redesign. |
| Integrated 1.245 V reference | ±3% accuracy over temperature; feeds comparator and gain block - eliminates need for external reference in feedback and monitoring circuits. |
Applications
| Portable Medical Monitor | Industrial Handheld Scanner |
|---|---|
Use Scenario: Battery-powered ECG front-end requiring isolated 3.3 V digital rail and ±5 V analog rails from single 3.6 V Li-ion cell. IC Role / Device Role / Timing Role: ADP3000ARU-REEL configured as inverting converter (Fig. 33) generates −5 V; simultaneously powers 3.3 V rail in step-up mode. Use Value: Single IC replaces two discrete regulators, reducing PCB area by 35% and eliminating timing skew between rails. | Use Scenario: Ruggedized barcode scanner operating from 9–15 V vehicle supply, needing regulated 5 V for imager and 3.3 V for MCU. IC Role / Device Role / Timing Role: ADP3000ARU-REEL in step-down mode delivers 5 V @ 250 mA (Fig. 32); secondary LDO derives 3.3 V. Use Value: 77% efficiency at 10 V input avoids heatsink; 150°C/W RU-14 thermal resistance sustains operation at 70°C ambient. |
| Smart Wearable Sensor Hub | Wireless IoT Node |
Use Scenario: Coin-cell–powered fitness tracker needing 3 V for BLE SoC and 1.8 V for MEMS sensor, with battery voltage monitoring. IC Role / Device Role / Timing Role: ADP3000ARU-REEL in step-up mode (2–3.2 V → 3 V) with AO pin driving low-battery interrupt to MCU. Use Value: 500 µA shutdown current extends shelf life; programmable hysteresis on AO prevents false wake-ups during transient dips. | Use Scenario: Solar-charged environmental sensor node requiring 3.3 V from variable 2.5–5.5 V supercapacitor bank. IC Role / Device Role / Timing Role: ADP3000ARU-REEL operates in step-up mode at light loads (PFM), transitioning to forced PWM above 50 mA for RF transmission bursts. Use Value: Seamless mode transition maintains regulation during burst transmit; 400 kHz switching avoids AM radio band interference. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar switching regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX1771ESA+ | Fixed 5 V output only; no adjustable version; 300 kHz max switching frequency; requires external MOSFET. | Lacks step-up/step-down flexibility and integrated switch - suitable only for fixed 5 V step-down from >7 V inputs. | Select MAX1771ESA+ only when fixed 5 V output and external FET control are required; ADP3000ARU-REEL preferred for dual-mode or adjustable designs. |
| TPS61040DRVR | Boost-only topology; 500 kHz switching; 28 V output max; integrated 500 mA switch; no step-down capability. | Cannot regulate outputs lower than input - unsuitable for automotive or industrial inputs >5 V requiring local 3.3 V rails. | Choose TPS61040DRVR for pure boost applications with higher output voltage needs; ADP3000ARU-REEL remains optimal for bidirectional voltage conversion. |
Compared with MAX1771ESA+ and TPS61040DRVR, ADP3000ARU-REEL uniquely combines step-up/step-down operation, adjustable output, and integrated switch in RU-14 package - enabling single-IC solutions for portable systems with varying input sources and multiple rail requirements.
Availability
ADP3000ARU-REEL is available at Aetrix Electronics and suitable for notebook computers, cellular telephones, and portable instrumentation requiring stable component supply with long-term manufacturability and consistent electrical performance.
Supply support for ADP3000ARU-REEL 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 ADP3000 product line was designed for ultra-low-power, space-constrained DC/DC conversion in portable electronics - emphasizing micropower operation, dual-mode topology, and minimal external component count.
FAQ
What is the maximum output current achievable with ADP3000ARU-REEL in step-up mode?
The ADP3000ARU-REEL delivers 180 mA at 3.3 V from a 2 V input in step-up mode, as verified in Figure 27 of the datasheet. Output current scales with input voltage and efficiency; at 3 V input, it supports up to 250 mA with proper inductor (e.g., Sumida CR43-6R8) and Schottky diode (e.g., 1N5817). Thermal limits in RU-14 package constrain continuous current to ≤200 mA at 70°C ambient.
Can ADP3000ARU-REEL operate in step-down mode with a 12 V input to generate 5 V?
Yes, ADP3000ARU-REEL supports step-down operation from 12 V input to 5 V output, as demonstrated in Figure 32. It delivers 250 mA at 77% typical efficiency using a 10 µH inductor (Sumida CR43-100) and 1N5817 Schottky diode. Input voltage range for step-down is 2 V to 30 V, and the RU-14 package's 150°C/W thermal resistance ensures reliable operation with appropriate PCB copper area.
How is the current limit set on ADP3000ARU-REEL, and what resistor value yields 400 mA?
The current limit on ADP3000ARU-REEL is set by connecting a resistor between ILIM and VIN. A 220 Ω resistor yields a 400 mA limit, as specified in Table 1 and confirmed in Figure 13–15. This value is derived from the internal 80 Ω sense resistor and 0.6 V trip threshold. Lower resistor values increase current limit; omitting the resistor (tying ILIM to VIN) sets maximum limit at 1.5 A.
Does ADP3000ARU-REEL require external compensation components for stability?
No, ADP3000ARU-REEL does not require external compensation components. Its comparator-based control loop uses built-in hysteresis (8–12.5 mV) to ensure stability across all operating conditions, as stated in the General Description and Theory of Operation sections. This eliminates the need for phase-compensation networks, simplifying design and reducing component count.
What is the purpose of the AO and SET pins on ADP3000ARU-REEL, and how are they used in practice?
The AO (auxiliary output) and SET (auxiliary input) pins form an uncommitted gain block. SET accepts a voltage divider from VIN; when that voltage falls below the internal 1.245 V reference, AO sinks ≥300 µA to signal low battery. In practice, this is used for system shutdown or alert generation - e.g., configuring R1/R2 to trigger at 2.5 V for Li-ion protection, with optional hysteresis resistor RHYS to prevent chatter.
ADP3000ARU-REEL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 14-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Bulk
- Product Status:
- Active
- Function:
- Step-Up/Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck-Boost
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2V
- Voltage - Input (Max):
- 30V
- Voltage - Output (Min/Fixed):
- 1.245V
- Voltage - Output (Max):
- 30V
- Current - Output:
- 1.5A (Switch)
- Frequency - Switching:
- 400kHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-TSSOP
ADP3000ARU-REEL FAQ
1.How can I place an order for ADP3000ARU-REEL through Aetrix?
Please submit a Request for Quotation (RFQ) for ADP3000ARU-REEL 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 ADP3000ARU-REEL reliable?
The price and inventory of ADP3000ARU-REEL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADP3000ARU-REEL is usually 5 days.
3.What payment methods are accepted for ADP3000ARU-REEL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADP3000ARU-REEL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADP3000ARU-REEL?
ADP3000ARU-REEL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADP3000ARU-REEL 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 ADP3000ARU-REEL?
For technical support, including ADP3000ARU-REEL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADP3000ARU-REEL requirements.
6.How does Aetrix verify that ADP3000ARU-REEL is sourced from the original manufacturer or authorized distributors?
All ADP3000ARU-REEL 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 ADP3000ARU-REEL meets industry standards.
7.What is the process for return or replacement of ADP3000ARU-REEL?
All ADP3000ARU-REEL units undergo pre-shipment inspection (PSI). If there is an issue with ADP3000ARU-REEL, 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 ADP3000ARU-REEL part is unused and in its original packaging.
Return procedure for ADP3000ARU-REEL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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