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Analog Devices Inc. ADP3050ARZ-5-REEL7
- Part No.:
- ADP3050ARZ-5-REEL7
- Manufacturer:
- Analog Devices Inc.
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
ADP3050ARZ-5-REEL7.pdf
- Description:
- IC REG BUCK BOOST 5V 1A 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,086
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Product details
Overview
ADP3050ARZ-5-REEL7 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 fixed 5 V output. It delivers ±3% output voltage accuracy over −40°C to +85°C and supports industrial power systems, PC peripherals, and automotive preregulation.
For engineers reviewing the ADP3050ARZ-5-REEL7 datasheet, ADP3050ARZ-5-REEL7 pinout, ADP3050ARZ-5-REEL7 application, or ADP3050ARZ-5-REEL7 equivalent, key selection considerations include its cycle-by-cycle current limiting, thermal shutdown, BOOST-driven saturation for high efficiency, bias-pin–enabled input-current reduction, and compatibility with ceramic/tantalum/electrolytic output capacitors without ESR constraints.
Technical Context
The ADP3050ARZ-5-REEL7 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 accepts any output capacitor type and ESR value.
It uses a boosted drive stage to saturate the internal NPN switch, reducing conduction losses, and draws operating current primarily from the BIAS pin when tied to regulated output-enabling higher system efficiency at light loads, especially with high VIN-to-VOUT ratios.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3.6 V to 30 V - supports wide industrial and automotive supply rails including 12 V, 24 V, and 28 V nominal systems. |
| Output Voltage | Fixed 5.00 V (±1.5% tolerance) - eliminates external feedback divider, simplifying layout and improving stability. |
| Switch Current Limit | 1.0 A avg / 1.7 A peak - enables reliable 1 A continuous output with margin for transient surges. |
| Switching Frequency | 200 kHz typ - balances efficiency, inductor size, and EMI; frequency folds back under overload to reduce stress. |
| Feedback Voltage | 4.85 V to 5.15 V - defines regulation setpoint; enables tight line/load regulation (< ±3% over full temp/input/load range). |
| Quiescent Current | 0.7–1.5 mA normal mode; <40 µA shutdown - minimizes standby loss in battery-backed or energy-sensitive systems. |
| Operating Temp Range | −40°C to +85°C - qualified for industrial and automotive under-hood environments without derating. |
Pinout & Package
ADP3050ARZ-5-REEL7 is housed in an 8-lead SOIC package (not Pb-free only), thermally enhanced for industrial ambient operation. Pin 1 is SWITCH (emitter node of internal NPN switch); Pin 2 is BOOST (drives saturated switch via external charge pump); Pin 3 is BIAS (reduces input current draw when connected to VOUT); Pin 4 is FB (internally tied to 5 V reference for fixed-output version); Pin 5 is COMP (external RC compensation node); Pin 6 is SD (active-low shutdown control); Pin 7 is GND (power ground reference); Pin 8 is IN (main input supply connection).
| 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 voltage source | Accepts externally generated >VIN voltage (min 3.0 V) to saturate NPN switch and minimize VCE(sat). |
| 3 - BIAS | Internal bias supply input | When ≥2.7 V, shifts most operating current from IN to BIAS-improving efficiency at light loads. |
| 4 - FB | Feedback input (fixed 5 V version) | Internally connected to 5 V reference; no external divider required-ensures stable regulation without resistor tolerance drift. |
| 5 - COMP | Error amplifier output / compensation node | External RC network sets loop stability; clamped to ≤2 V for fast transient response. |
| 6 - SD | Shutdown enable input | Logic-low (<0.4 V) disables switching and reduces supply current to <40 µA. |
| 7 - GND | Power ground reference | Must connect to low-impedance local ground plane; separates power and signal return paths. |
| 8 - IN | Main input supply | Accepts 3.6–30 V; requires local 22 µF ceramic bypass capacitor placed adjacent to pin. |
Key Features
| Feature | Design Value |
|---|---|
| Capacitor-agnostic compensation | Supports ceramic, tantalum, electrolytic, and OS-CON output capacitors-no minimum ESR requirement simplifies BOM and improves reliability across temperature. |
| BOOST-driven NPN saturation | Reduces switch VCE(sat) to 0.65–0.95 V at 1 A, lowering conduction loss vs. conventional bipolar buck regulators. |
| Bias-pin–enabled efficiency boost | Draws >80% of operating current from regulated output when BIAS ≥2.7 V-cuts input quiescent current by up to 70% at light loads. |
| Cycle-by-cycle current limiting | Guards against short-circuit and overload faults with 1.5 A peak limit and automatic frequency foldback to reduce thermal stress. |
| Thermal shutdown protection | Shuts down at junction temperature >125°C and auto-restarts after cooldown-prevents permanent damage in sustained overloads. |
Applications
| Industrial Power Systems | PC Peripheral Power |
|---|---|
Use Scenario: Distributed 5 V rail generation for PLC I/O modules, sensor interfaces, and motor drivers operating from 12–24 V DC bus. IC Role / Device Role / Timing Role: Primary step-down regulator delivering stable 5 V at up to 1 A with <±3% regulation across line, load, and temperature. Use Value: Eliminates need for external feedback resistors and supports wide-input industrial supplies while maintaining tight output accuracy. | Use Scenario: Standalone 5 V supply for USB hubs, SATA controllers, and PCIe add-in cards powered from ATX 12 V rail. IC Role / Device Role / Timing Role: High-efficiency buck converter with low quiescent current and fast transient response for burst-mode peripheral loads. Use Value: BIAS pin operation reduces 12 V input current draw by >60% at light load-lowering heat and improving overall system efficiency. |
| Automotive Preregulation | Battery Charger Auxiliary Supply |
Use Scenario: Pre-regulating 5 V supply for infotainment microcontrollers and CAN transceivers fed from 12 V battery (9–16 V nominal, up to 30 V load dump). IC Role / Device Role / Timing Role: Robust front-end regulator handling 60 V/100 ms transients and maintaining regulation during cold-crank (down to 3.6 V). Use Value: Absolute max rating of 60 V peak input and −40°C to +85°C operation ensure compliance with ISO 7637-2 pulse 5a/b requirements. | Use Scenario: Isolated auxiliary 5 V supply for charger status LEDs, communication ICs, and MCU supervision in Li-ion wall adapters. IC Role / Device Role / Timing Role: Compact, self-contained buck regulator replacing linear post-regulators to improve thermal performance and reduce footprint. Use Value: Integrated 1 A switch and SOIC-8 package enable single-chip solution with <5 mm² PCB area-no external MOSFET or driver needed. |
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 | 5 V fixed output, 1 A switch, 260 kHz switching, but requires minimum 7 V input; no BOOST pin or BIAS efficiency mode. | Lacks bias-pin efficiency optimization and wide 3.6 V start-up-unsuitable for low-VIN or battery-backed systems. | Choose LM2678-5.0/NOPB only if input is guaranteed ≥7 V and efficiency at light load is not critical. |
| TPS5430DR | 3–36 V input, adjustable output, 3.5 A switch, 500 kHz, but requires external feedback divider and has stricter ESR requirements for output caps. | Higher current and frequency, but added complexity and less flexibility with capacitor types than ADP3050ARZ-5-REEL7. | Choose TPS5430DR when >1 A output or higher switching frequency is required-and accept added design overhead. |
Compared with LM2678-5.0/NOPB, ADP3050ARZ-5-REEL7 starts at 3.6 V and achieves better light-load efficiency via BIAS pin; compared with TPS5430DR, it offers simpler fixed-output implementation and broader capacitor compatibility-making it optimal for cost-sensitive, space-constrained 5 V industrial supplies.
Availability
ADP3050ARZ-5-REEL7 is available at Aetrix Electronics and suitable for industrial power systems, PC peripheral power systems, and automotive preregulation requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for ADP3050ARZ-5-REEL7 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 with precision technology.
The ADP3050 product line delivers robust, easy-to-use DC/DC buck regulators optimized for wide-input industrial and automotive applications where reliability, thermal resilience, and capacitor flexibility are critical.
FAQ
What is the minimum input voltage required for ADP3050ARZ-5-REEL7 to regulate 5 V output?
The ADP3050ARZ-5-REEL7 guarantees regulation down to 3.6 V input across temperature and load. At 1 A load and 5 V output, typical minimum input is ~6.5 V per Figure 13; however, the device remains functional and enters dropout only below 3.6 V-enabling use in brownout-prone 12 V systems.
Does ADP3050ARZ-5-REEL7 require an external BOOST capacitor?
Yes, ADP3050ARZ-5-REEL7 requires an external BOOST capacitor (typically 10–100 nF ceramic) connected between BOOST pin and SWITCH pin to generate the boosted drive voltage. This capacitor enables NPN saturation and must be placed close to the IC with low-inductance routing.
Can ADP3050ARZ-5-REEL7 operate in discontinuous conduction mode (DCM)?
Yes, ADP3050ARZ-5-REEL7 operates reliably in both continuous and discontinuous conduction modes. DCM occurs naturally at light loads (<0.5 A) and is supported by its current-mode architecture and frequency foldback-maintaining regulation without instability or audible noise.
Is the FB pin of ADP3050ARZ-5-REEL7 accessible for external adjustment?
No-the ADP3050ARZ-5-REEL7 is the fixed 5 V output variant; its FB pin is internally connected to the 5 V reference and not brought out for external resistor divider configuration. For adjustable output, use ADP3050AR or ADP3050ARZ instead.
What thermal derating applies to ADP3050ARZ-5-REEL7 at 85°C ambient?
At +85°C ambient on a 4-layer PCB, θJA = 60.6°C/W (non-Pb-free SOIC). With 1 A load and 12 V input, typical power dissipation is ~0.7 W, resulting in ~42°C junction rise-well within the 125°C max junction limit. No derating is required up to full 1 A output at 85°C ambient.
ADP3050ARZ-5-REEL7 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:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 3.6V
- Voltage - Input (Max):
- 30V
- Voltage - Output (Min/Fixed):
- 5V
- Voltage - Output (Max):
- -
- 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-5-REEL7 FAQ
1.How can I place an order for ADP3050ARZ-5-REEL7 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADP3050ARZ-5-REEL7 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-5-REEL7 reliable?
The price and inventory of ADP3050ARZ-5-REEL7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADP3050ARZ-5-REEL7 is usually 5 days.
3.What payment methods are accepted for ADP3050ARZ-5-REEL7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADP3050ARZ-5-REEL7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADP3050ARZ-5-REEL7?
ADP3050ARZ-5-REEL7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADP3050ARZ-5-REEL7 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-5-REEL7?
For technical support, including ADP3050ARZ-5-REEL7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADP3050ARZ-5-REEL7 requirements.
6.How does Aetrix verify that ADP3050ARZ-5-REEL7 is sourced from the original manufacturer or authorized distributors?
All ADP3050ARZ-5-REEL7 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-5-REEL7 meets industry standards.
7.What is the process for return or replacement of ADP3050ARZ-5-REEL7?
All ADP3050ARZ-5-REEL7 units undergo pre-shipment inspection (PSI). If there is an issue with ADP3050ARZ-5-REEL7, 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-5-REEL7 part is unused and in its original packaging.
Return procedure for ADP3050ARZ-5-REEL7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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