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Analog Devices Inc. ADP3050ARZ-RL
- Part No.:
- ADP3050ARZ-RL
- Manufacturer:
- Analog Devices Inc.
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
ADP3050ARZ-RL.pdf
- Description:
- IC REG BUCK BOOST ADJ 1A 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,533
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Product details
Overview
ADP3050ARZ-RL from Analog Devices is a current-mode monolithic buck (step-down) PWM switching regulator with integrated 1 A NPN power switch, 200 kHz fixed-frequency operation, 3.6 V to 30 V input range, and adjustable output (1.25 V to 12 V). It delivers high efficiency in industrial power systems and battery-charger pre-regulation via boosted drive saturation and bias-pin efficiency optimization.
For engineers reviewing the ADP3050ARZ-RL datasheet, ADP3050ARZ-RL pinout, ADP3050ARZ-RL application, or ADP3050ARZ-RL equivalent, key selection considerations include its cycle-by-cycle current limiting, thermal shutdown protection, ±3% output voltage accuracy over temperature, support for any output capacitor type (ceramic/tantalum/electrolytic), and compatibility with ADIsimPower™ design tool for rapid schematic generation.
Technical Context
The ADP3050ARZ-RL implements current-mode control with an internal oscillator (170–240 kHz), transconductance error amplifier (1250 µMho), and cycle-by-cycle current limit with frequency foldback under fault conditions. Its unique compensation scheme eliminates ESR dependency, enabling stable operation with ceramic, tantalum, or electrolytic output capacitors.
A dedicated BOOST pin supplies a saturated drive voltage to the internal NPN switch, reducing conduction losses; the BIAS pin allows sourcing of internal operating current from the regulated output-improving light-load efficiency when VIN ≫ VOUT. Shutdown mode draws <40 µA.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3.6 V to 30 V - supports wide-input industrial and automotive supply rails without external pre-regulation. |
| Switching Frequency | 200 kHz (typ) - enables use of compact 33 µH inductors and standard surface-mount magnetics. |
| Output Current Limit | 1.25 A (avg, typ) - sustains full 1 A continuous load with margin for transient peaks and thermal derating. |
| Feedback Voltage | 1.20 V (typ) - sets output via resistor divider; enables precise 1.25–12 V adjustment with ±4% tolerance over temp. |
| Quiescent Current | 1.5 mA (IN pin, typ) - low operating current improves system-level efficiency at light loads. |
| Shutdown Current | 40 µA (max) - ultra-low standby draw enables long-battery-life applications. |
| Operating Temp Range | −40°C to +85°C - qualified for industrial ambient environments without derating. |
Pinout & Package
ADP3050ARZ-RL is housed in an 8-lead SOIC package (RoHS-compliant, Pb-free), thermally enhanced for industrial power dissipation. Pin layout supports standard PCB layout practices with dedicated GND, IN, and SWITCH nodes.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - SWITCH | Emitter node of internal NPN power switch | Connects to inductor and catch diode anode; swings between VIN and −0.5 V during switching. |
| 2 - BOOST | Boosted gate-drive supply input | Accepts >VIN voltage (e.g., from bootstrap capacitor) to saturate NPN switch and minimize VCE(sat). |
| 3 - BIAS | Internal bias supply input | Tie to regulated output to source most operating current from VOUT-reducing input-side losses when VIN ≫ VOUT. |
| 4 - FB | Feedback sensing input | Direct connection to output (fixed versions) or resistor divider (adjustable) for 1.20 V reference regulation. |
| 5 - COMP | Compensation and loop override node | External RC network sets loop stability; clamped at 2 V max to preserve transient response. |
| 6 - SD | Active-low shutdown control | Pull ≤0.4 V to disable regulator and reduce supply current to <40 µA. |
| 7 - GND | Power and signal ground reference | Must connect to low-impedance local ground plane to minimize noise and ensure current-sense accuracy. |
| 8 - IN | Main power input | 3.6–30 V supply input; requires local 22 µF bypass capacitor placed adjacent to pin. |
Key Features
| Feature | Design Value |
|---|---|
| Any-capacitor stability | Supports ceramic, tantalum, OS-CON, and electrolytic output capacitors-no ESR minimum required. |
| Boosted NPN drive | Reduces switch saturation voltage to 0.95 V (max) at 1 A, improving efficiency vs. conventional bipolar regulators. |
| Bias-pin efficiency mode | When BIAS ≥2.7 V, >80% of internal current drawn from VOUT-cutting input quiescent loss by ~60% at light loads. |
| Current-limit foldback | Reduces switching frequency under overload/short-circuit, lowering stress on IC and external components. |
| Thermal shutdown | Protects device at junction temperatures >125°C; auto-recovery after cooldown. |
Applications
| Industrial Power Systems | PC Peripheral Power |
|---|---|
Use Scenario: Distributed 5 V or 3.3 V rail generation from 12–24 V factory bus in PLC I/O modules or sensor hubs. IC Role / Device Role / Timing Role: Primary step-down regulator delivering up to 1 A with ±3% line/load regulation and robust fault handling. Use Value: Eliminates need for external current-sense resistors or complex compensation networks-reducing BOM count and layout area. | Use Scenario: Standby and main power conversion for USB hubs, docking stations, and external storage enclosures. IC Role / Device Role / Timing Role: High-efficiency buck converter supporting dynamic load steps from 10 mA to 1 A while maintaining tight output ripple. Use Value: Bias-pin operation reduces no-load input current to <1.5 mA-meeting Energy Star and EU CoC Tier 2 standby requirements. |
| Automotive Pre-regulator | Battery Charger Front-end |
Use Scenario: 12 V nominal vehicle battery input stepped down to 5 V for infotainment MCU core logic before LDO post-regulation. IC Role / Device Role / Timing Role: Wide-input buck regulator tolerating cold-crank (6 V) and load-dump (60 V, 100 ms) transients per ISO 7637-2. Use Value: Peak input rating of 60 V and thermal shutdown enable direct connection to unfiltered battery rail-reducing front-end component count. | Use Scenario: Constant-voltage stage in multi-cell Li-ion charger, converting 18–30 V adapter output to 12.6 V for CC/CV charging circuitry. IC Role / Device Role / Timing Role: Adjustable-output buck controller set to 12.6 V with cycle-by-cycle current limiting to protect against cell mismatch faults. Use Value: Configurable as SEPIC or buck-boost allows single IC to handle both step-down and step-up requirements in universal charger designs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM2678-5.0/NOPB | Fixed 5 V output only; 60 V max input; no BIAS pin; higher IQ (5 mA typ) | Lacks adjustable output and bias-driven efficiency mode-less suitable for multi-rail or low-IQ systems | Choose when fixed 5 V output suffices and cost is primary driver; verify thermal performance at 1 A continuous load. |
| TPS54202DRCT | 2 A integrated FET; 4.5–28 V input; 500 kHz switching; no BOOST pin; uses MOSFET instead of NPN | Higher current and frequency, but lacks boost-driven saturation-lower efficiency at high VIN/VOUT ratios | Prefer for higher-current or space-constrained designs where 500 kHz enables smaller passives; avoid if BIAS-pin efficiency is critical. |
Compared with LM2678-5.0/NOPB and TPS54202DRCT, the ADP3050ARZ-RL uniquely combines adjustable output, bias-pin efficiency optimization, and BOOST-driven NPN saturation-making it optimal for industrial and battery-fed systems requiring wide VIN, low-light-load IQ, and flexible VOUT configuration without sacrificing reliability.
Availability
ADP3050ARZ-RL is available at Aetrix Electronics and suitable for industrial power systems, PC peripheral power systems, and automotive pre-regulator applications requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for ADP3050ARZ-RL 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 precision instrumentation, industrial automation, and communications markets.
The ADP3050 product line delivers monolithic, high-voltage buck regulators optimized for rugged industrial and automotive environments-designed to simplify power design while maintaining ±3% output accuracy, fault resilience, and broad capacitor compatibility.
FAQ
What is the maximum input voltage the ADP3050ARZ-RL can withstand?
The ADP3050ARZ-RL supports a continuous input voltage range of 3.6 V to 30 V, with a peak rating of 60 V for durations up to 100 ms-enabling reliable operation during automotive load-dump events and industrial transient surges without external clamping.
Can the ADP3050ARZ-RL be used with ceramic output capacitors?
Yes, the ADP3050ARZ-RL is explicitly designed for unconditional stability with ceramic, tantalum, electrolytic, and OS-CON output capacitors. Its compensation architecture imposes no minimum ESR requirement-eliminating the need for damping resistors or capacitor selection constraints.
How does the BIAS pin improve efficiency in the ADP3050ARZ-RL?
When the BIAS pin is connected to the regulated output and held above 2.7 V, the ADP3050ARZ-RL draws >80% of its internal operating current from VOUT instead of VIN. This reduces input-side quiescent loss-especially beneficial in high-VIN/low-VOUT configurations like 24 V-to-3.3 V conversion.
What is the purpose of the BOOST pin on the ADP3050ARZ-RL?
The BOOST pin supplies a voltage higher than VIN (typically generated via bootstrap capacitor) to the drive stage of the internal NPN switch. This ensures deep saturation, minimizing VCE(sat) to 0.95 V (max) at 1 A and increasing overall system efficiency compared to standard bipolar buck regulators.
Does the ADP3050ARZ-RL support adjustable output voltage?
Yes, the ADP3050ARZ-RL is the adjustable version of the ADP3050 family. Its output can be set from 1.25 V to 12 V using a two-resistor feedback divider referenced to the 1.20 V internal bandgap-enabling flexible rail generation without changing the IC.
ADP3050ARZ-RL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Down, Step-Up/Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck, Buck-Boost, SEPIC
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 3.6V
- Voltage - Input (Max):
- 30V
- Voltage - Output (Min/Fixed):
- 1.25V
- Voltage - Output (Max):
- 12V
- Current - Output:
- 1A (Switch)
- Frequency - Switching:
- 200kHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
ADP3050ARZ-RL FAQ
1.How can I place an order for ADP3050ARZ-RL through Aetrix?
Please submit a Request for Quotation (RFQ) for ADP3050ARZ-RL 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 ADP3050ARZ-RL reliable?
The price and inventory of ADP3050ARZ-RL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADP3050ARZ-RL is usually 5 days.
3.What payment methods are accepted for ADP3050ARZ-RL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADP3050ARZ-RL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADP3050ARZ-RL?
ADP3050ARZ-RL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADP3050ARZ-RL 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 ADP3050ARZ-RL?
For technical support, including ADP3050ARZ-RL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADP3050ARZ-RL requirements.
6.How does Aetrix verify that ADP3050ARZ-RL is sourced from the original manufacturer or authorized distributors?
All ADP3050ARZ-RL 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 ADP3050ARZ-RL meets industry standards.
7.What is the process for return or replacement of ADP3050ARZ-RL?
All ADP3050ARZ-RL units undergo pre-shipment inspection (PSI). If there is an issue with ADP3050ARZ-RL, 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 ADP3050ARZ-RL part is unused and in its original packaging.
Return procedure for ADP3050ARZ-RL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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