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Analog Devices Inc. ADP3050ARZ-5-REEL
- Part No.:
- ADP3050ARZ-5-REEL
- Manufacturer:
- Analog Devices Inc.
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
ADP3050ARZ-5-REEL.pdf
- Description:
- IC REG BUCK BOOST 5V 1A 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,633
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Product details
Overview
ADP3050ARZ-5-REEL 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, and fixed 5 V output. It operates from 3.6 V to 30 V input, delivers ±3% output voltage accuracy over −40°C to +85°C, and supports industrial power systems requiring high-voltage DC/DC conversion.
For engineers reviewing the ADP3050ARZ-5-REEL datasheet, ADP3050ARZ-5-REEL pinout, ADP3050ARZ-5-REEL application, or ADP3050ARZ-5-REEL equivalent, key selection considerations include its 1 A integrated switch, 5 V fixed output, cycle-by-cycle current limiting, thermal shutdown, and compatibility with ceramic/tantalum/electrolytic output capacitors without ESR constraints.
Technical Context
The ADP3050ARZ-5-REEL implements current-mode control with an internal oscillator at 200 kHz (±15%), peak switch current limit of 1.5–2.1 A, and cycle-by-cycle current limiting with frequency foldback under overload. Its boosted drive stage saturates the internal NPN switch, reducing conduction loss and enabling higher efficiency than conventional bipolar buck regulators.
It features a dedicated BIAS pin for output-derived biasing (improving light-load efficiency), a COMP pin for external compensation, and a shutdown input (SD) that reduces quiescent current to <40 µA. The feedback pin (FB) is internally connected to a 5.00 V reference (±1.5%) for the -5 variant, eliminating external resistor dividers.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3.6 V to 30 V - supports wide-range industrial and automotive inputs; withstands 60 V transient (100 ms). |
| Output Voltage | Fixed 5.00 V (±1.5%) - eliminates external feedback divider; ensures stable USB-peripheral or logic-supply rail. |
| Switch Current Limit | 1.25 A typical average / 1.7 A peak - enables robust 1 A continuous load delivery with margin for surge. |
| Switching Frequency | 200 kHz (170–240 kHz) - balances efficiency and EMI; allows use of compact 33 µH inductors and standard SMD passives. |
| Efficiency | Up to 90% at 12 VIN/5 VOUT/1 A - achieved via boosted gate drive and BIAS-pin efficiency optimization. |
| Quiescent Current | 1.5 mA typical (IN pin), 5 mA typical (BIAS pin) - low operating current improves system-level standby power. |
| Thermal Shutdown | Active at TJ > +125°C - protects device during overload or poor heatsinking; auto-recovery on cooldown. |
Pinout & Package
ADP3050ARZ-5-REEL is housed in an 8-lead SOIC package (RoHS-compliant, Pb-free), thermally enhanced for industrial ambient operation up to +85°C.
| 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; requires low-inductance layout. |
| 2 - BOOST | Boost capacitor drive node | Provides >VIN voltage to saturate NPN switch; must be decoupled with 10 nF ceramic capacitor to GND. |
| 3 - BIAS | Internal bias supply input | Tie to regulated 5 V output to reduce input supply current by >70%; improves light-load efficiency. |
| 4 - FB | Feedback reference input | Internally connected to 5.00 V reference; leave unconnected for fixed-output operation (no external divider needed). |
| 5 - COMP | Error amplifier output & compensation node | Connect RC network (e.g., 4.7 nF + 7.5 kΩ) for loop stability; clamped to 2 V max to preserve transient response. |
| 6 - SD | Shutdown control input | Pull ≤0.4 V to disable regulator; draws <40 µA in shutdown; tie to IN if unused. |
| 7 - GND | Power and signal ground reference | Must connect to low-impedance local ground plane; separate analog/digital ground not required. |
| 8 - IN | Main power input | Accepts 3.6–30 V; requires ≥22 µF ceramic or tantalum bypass capacitor placed within 5 mm. |
Key Features
| Feature | Design Value |
|---|---|
| Capacitor flexibility | Supports ceramic, tantalum, electrolytic, and OS-CON output capacitors - no ESR minimum required for stability. |
| Configurable topology | Can be wired as buck, buck-boost, or SEPIC - enables single-part reuse across multiple DC/DC architectures. |
| Integrated protection | Includes cycle-by-cycle current limit, thermal shutdown, and input overvoltage tolerance (60 V/100 ms). |
| High-efficiency drive | Boosted gate drive saturates internal NPN switch - reduces VCE(sat) to 0.65–0.95 V at 1 A, lowering conduction loss. |
| Low-power shutdown | Reduces total supply current to <40 µA - suitable for battery-backed or always-on industrial monitoring nodes. |
Applications
| Industrial Power Systems | PC Peripheral Power Systems |
|---|---|
Use Scenario: Distributed 5 V rail generation in programmable logic controllers (PLCs) with 24 V backplane input. IC Role / Device Role / Timing Role: Primary step-down regulator delivering regulated 5 V to microcontrollers, I/O drivers, and communication interfaces. Use Value: Enables single-stage conversion from 24 V without linear post-regulation; maintains ±3% regulation across −40°C to +85°C ambient. | Use Scenario: Standalone 5 V supply for USB hubs, PCIe add-in cards, or SATA controller boards. IC Role / Device Role / Timing Role: Fixed-output buck converter powering logic and interface ICs directly from ATX 12 V or 5 VSB rails. Use Value: Eliminates need for external feedback resistors; supports high ripple-current catch diodes and small 33 µH inductors for compact board area. |
| Preregulator for Linear Regulators | Automotive Systems |
Use Scenario: Pre-converting 12–24 V vehicle battery to 5.5 V before LDO for noise-sensitive analog sensors. IC Role / Device Role / Timing Role: Efficient intermediate-stage regulator reducing dropout and heat dissipation in downstream LDOs. Use Value: Delivers 1 A at 90% efficiency; withstands 60 V load-dump transients per ISO 7637-2; supports 40 V absolute max input. | Use Scenario: Powering infotainment head units or ADAS camera modules from 12 V battery with cold-crank support. IC Role / Device Role / Timing Role: Main 5 V system rail generator tolerant of 3.6 V min input during cranking and 60 V transients. Use Value: Maintains regulation down to 3.6 V input; includes thermal shutdown and current limiting for fault resilience in sealed enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM2678-5.0/NOPB | 5 V fixed output, 1 A switch, 260 kHz fSW, no BOOST pin, requires specific ESR output cap | Lacks boost drive and capacitor flexibility; lower efficiency at high VIN/VOUT ratios | Choose when cost sensitivity outweighs efficiency and design flexibility needs. |
| TPS5430DDAR | 3–36 V input, adjustable output, 3.5 A switch, 500 kHz fSW, integrated MOSFET, no BIAS pin | Higher current, higher frequency, but no output-derived biasing; less efficient at light loads | Choose when >1 A output or smaller magnetics are required; not drop-in due to pinout and control differences. |
Compared with LM2678-5.0/NOPB and TPS5430DDAR, ADP3050ARZ-5-REEL uniquely combines fixed 5 V output, BOOST-driven NPN saturation, BIAS-pin efficiency optimization, and universal capacitor compatibility - making it optimal for space-constrained industrial and automotive 1 A buck designs where reliability and ease of stabilization are critical.
Availability
ADP3050ARZ-5-REEL is available at Aetrix Electronics and suitable for industrial power systems, PC peripheral power systems, preregulator for linear regulators, and automotive systems requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for ADP3050ARZ-5-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 precision instrumentation, industrial automation, and communications markets.
The ADP3050 product line delivers monolithic, high-voltage buck regulators optimized for rugged industrial and automotive environments - emphasizing wide input range, integrated protection, and design flexibility across topologies.
FAQ
What is the output voltage tolerance of the ADP3050ARZ-5-REEL over temperature and load?
The ADP3050ARZ-5-REEL provides a fixed 5.00 V output with ±1.5% initial tolerance (4.85 V to 5.15 V) over full line, load, and temperature (−40°C to +85°C). Typical output voltage accuracy remains within ±3% across all conditions, verified per Table 1 in the Rev. C datasheet.
Does the ADP3050ARZ-5-REEL require external feedback resistors?
No. The ADP3050ARZ-5-REEL is the fixed 5 V version: its FB pin connects internally to a precision 5.00 V reference. External resistors are unnecessary - unlike the adjustable ADP3050AR variants - simplifying layout and improving long-term stability.
What is the purpose of the BOOST pin on the ADP3050ARZ-5-REEL?
The BOOST pin on the ADP3050ARZ-5-REEL supplies a boosted voltage (>VIN) to the drive stage of the internal NPN power switch. This ensures deep saturation, reducing VCE(sat) to 0.65–0.95 V at 1 A and significantly improving conversion efficiency versus non-boosted bipolar regulators.
Can the ADP3050ARZ-5-REEL operate with ceramic output capacitors?
Yes. The ADP3050ARZ-5-REEL's unique compensation architecture supports ceramic, tantalum, electrolytic, and OS-CON output capacitors without requiring minimum ESR - unlike many legacy buck controllers. This enables smaller, more reliable, and lower-cost output filtering.
What protection features are integrated into the ADP3050ARZ-5-REEL?
The ADP3050ARZ-5-REEL integrates cycle-by-cycle current limiting, thermal shutdown (triggering at +125°C junction), and input overvoltage tolerance (60 V for 100 ms). It also features a shutdown pin (SD) that reduces quiescent current to <40 µA, enhancing system-level power management.
ADP3050ARZ-5-REEL 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-REEL FAQ
1.How can I place an order for ADP3050ARZ-5-REEL through Aetrix?
Please submit a Request for Quotation (RFQ) for ADP3050ARZ-5-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 ADP3050ARZ-5-REEL reliable?
The price and inventory of ADP3050ARZ-5-REEL 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-REEL is usually 5 days.
3.What payment methods are accepted for ADP3050ARZ-5-REEL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADP3050ARZ-5-REEL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADP3050ARZ-5-REEL?
ADP3050ARZ-5-REEL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADP3050ARZ-5-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 ADP3050ARZ-5-REEL?
For technical support, including ADP3050ARZ-5-REEL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADP3050ARZ-5-REEL requirements.
6.How does Aetrix verify that ADP3050ARZ-5-REEL is sourced from the original manufacturer or authorized distributors?
All ADP3050ARZ-5-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 ADP3050ARZ-5-REEL meets industry standards.
7.What is the process for return or replacement of ADP3050ARZ-5-REEL?
All ADP3050ARZ-5-REEL units undergo pre-shipment inspection (PSI). If there is an issue with ADP3050ARZ-5-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 ADP3050ARZ-5-REEL part is unused and in its original packaging.
Return procedure for ADP3050ARZ-5-REEL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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