My Inquiry
My Account
Analog Devices Inc. ADP3050ARZ-R7
- Part No.:
- ADP3050ARZ-R7
- Manufacturer:
- Analog Devices Inc.
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
ADP3050ARZ-R7.pdf
- Description:
- IC REG BUCK BOOST ADJ 1A 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,616
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
ADP3050ARZ-R7 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 wide 3.6 V to 30 V input range. It supports adjustable output (1.25 V–12 V) or fixed 3.3 V/5 V versions, features cycle-by-cycle current limiting, thermal shutdown, and operates across −40°C to +85°C for industrial power systems.
For engineers reviewing the ADP3050ARZ-R7 datasheet, ADP3050ARZ-R7 pinout, ADP3050ARZ-R7 application, or ADP3050ARZ-R7 equivalent, key selection considerations include its 1 A average output current limit, 1.20 V feedback reference, BOOST-driven NPN saturation for high efficiency, shutdown quiescent current <40 µA, and compatibility with ceramic/tantalum/electrolytic output capacitors without ESR constraints.
Technical Context
The ADP3050ARZ-R7 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 overload. Its unique boosted drive stage saturates the internal NPN switch using external BOOST capacitor/diode, reducing conduction losses versus conventional bipolar buck regulators.
It uses a 2.5 V internal regulator for biasing, draws operating current from BIAS pin when >2.7 V (e.g., tied to regulated output), and maintains ±3% output voltage accuracy over line, load, and temperature. The device supports buck, buck-boost, and SEPIC configurations via external component selection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3.6 V to 30 V - Enables direct operation from 5 V, 12 V, 24 V industrial rails and tolerates 60 V transient peaks (100 ms). |
| Switching Frequency | 200 kHz (typ) - Allows use of compact 22–47 µH surface-mount inductors and reduces EMI compared to higher-frequency alternatives. |
| Average Output Current Limit | 1.25 A (typ) - Supports continuous 1 A load with margin; peak switch current limit is 1.7 A (typ), enabling robust fault handling. |
| Feedback Reference Voltage | 1.20 V (±0.04 V) - Sets output voltage via resistor divider; enables precise 3.3 V or 5 V fixed outputs or adjustable 1.25–12 V regulation. |
| Shutdown Quiescent Current | <40 µA - Reduces system standby power significantly; SD pin logic-low disables all internal circuitry. |
| Operating Temperature Range | −40°C to +85°C - Qualified for industrial environments including factory automation and distributed power systems. |
| Package | 8-lead SOIC (RoHS-compliant, Pb-free) - Thermally enhanced footprint with θJA = 87.5°C/W on 4-layer PCB for reliable thermal management. |
Pinout & Package
ADP3050ARZ-R7 is housed in an 8-lead SOIC package (body size 4.9 mm × 3.9 mm, lead pitch 1.27 mm), RoHS-compliant and Pb-free. Thermal pad not present; standard SOIC thermal performance applies.
| 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; carries full switched current. |
| 2 - BOOST | Boost capacitor drive node | Drives external BOOST capacitor/diode network to generate >VIN voltage for NPN base drive, ensuring saturation and low VCE(sat). |
| 3 - BIAS | Internal bias supply input | Tie to regulated output (≥2.7 V) to source most operating current from VOUT, improving light-load efficiency; leave open if unused. |
| 4 - FB | Feedback input to error amplifier | Senses output voltage via resistor divider; 1.20 V reference sets regulation point; direct connection used for fixed-output variants. |
| 5 - COMP | Compensation and loop override node | Connect RC network for stability; clamped at 2 V internally; voltage >2 V requires pull-up resistor for fast transient response. |
| 6 - SD | Active-low shutdown control | Pull ≤0.4 V to disable regulator; draws <40 µA in shutdown; tie to IN if always enabled. |
| 7 - GND | Power and signal ground reference | Must connect to low-impedance local ground plane; separates power and signal return paths for noise control. |
| 8 - IN | Main power input | Accepts 3.6–30 V; requires local 22 µF ceramic or electrolytic bypass capacitor placed adjacent to pin. |
Key Features
| Feature | Design Value |
|---|---|
| Capacitor-flexible compensation | Supports any output capacitor type (ceramic, tantalum, OS-CON, electrolytic) without ESR constraints - eliminates capacitor selection risk and simplifies BOM. |
| Boosted NPN drive stage | External BOOST network drives NPN switch into deep saturation, achieving 0.65–0.95 V saturation voltage at 1 A - improves efficiency over standard bipolar buck regulators. |
| Bias-pin efficiency optimization | When BIAS ≥2.7 V, >80% of internal operating current drawn from VOUT instead of VIN - increases light-load efficiency by up to 5% in high VIN/VOUT ratio applications. |
| Configurable topology support | Can be wired as buck, buck-boost, or SEPIC via external component reconfiguration - extends utility beyond basic step-down to negative output or wide VIN/VOUT ratio designs. |
| Integrated protection suite | Includes cycle-by-cycle current limiting, thermal shutdown, and frequency foldback during overload - prevents damage during short-circuit or startup faults without external circuitry. |
Applications
| Industrial Power Systems | PC Peripheral Power |
|---|---|
Use Scenario: Providing stable 5 V or 3.3 V rail for PLC I/O modules, sensor interfaces, and motor drivers in factory automation cabinets with 24 V DC bus. IC Role / Device Role / Timing Role: Primary step-down regulator converting unregulated 24 V industrial supply to clean, regulated low-voltage logic power. Use Value: 1 A output capability, −40°C to +85°C rating, and 60 V transient tolerance ensure reliable operation in electrically noisy, thermally demanding environments. | Use Scenario: Generating auxiliary 3.3 V supply for USB hubs, PCIe add-in cards, or SATA controllers from 12 V ATX or proprietary motherboard rails. IC Role / Device Role / Timing Role: Compact, self-contained buck converter eliminating need for discrete MOSFETs, controllers, and external compensation. Use Value: SOIC package fits dense layouts; 200 kHz switching allows small 33 µH inductor and 100 µF output capacitor; no ESR restrictions simplify capacitor sourcing. |
| Preregulator for Linear Regulators | Automotive Infotainment Power |
Use Scenario: Stepping down 12 V or 24 V vehicle battery or wall adapter to ~5.5 V before LDOs that deliver ultra-low-noise 3.3 V or 1.8 V for ADCs or RF ICs. IC Role / Device Role / Timing Role: High-efficiency preregulator reducing power dissipation in downstream linear regulators. Use Value: Adjustable output (1.25–12 V) enables optimal dropout voltage setting; 1.25 A current limit accommodates LDO input surge currents. | Use Scenario: Powering display backlight drivers, audio amplifiers, or microcontroller subsystems in automotive head units with cold-crank (4.5 V) and load-dump (60 V) compliance requirements. IC Role / Device Role / Timing Role: Robust primary DC/DC converter meeting automotive transient immunity standards without additional protection circuitry. Use Value: 3.6–30 V input range covers cold-crank to load-dump; integrated current limit and thermal shutdown meet AEC-Q100 functional safety expectations. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM2576HVS-5.0/NOPB | 5 V fixed output, 3 A switch current, 52 kHz switching, TO-220 package | Higher current, lower frequency, larger thermal footprint; requires external diode and compensation | Choose for higher output current (>1 A) and simpler thermal design where board space permits TO-220 mounting. |
| TPS54202DRCT | 2 A integrated FET, 4.5–28 V input, 500 kHz, 10-pin WSON, internal compensation | Higher frequency, smaller passive components, no BOOST pin or external diode required | Choose for space-constrained designs needing higher efficiency at light loads and simplified layout with no BOOST network. |
Compared with LM2576HVS-5.0/NOPB, ADP3050ARZ-R7 offers higher switching frequency and SOIC packaging but lower current rating; compared with TPS54202DRCT, it provides superior transient immunity (60 V peak) and flexible topology support but requires external BOOST and diode components.
Availability
ADP3050ARZ-R7 is available at Aetrix Electronics and suitable for industrial power systems, PC peripheral power systems, and automotive infotainment power requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for ADP3050ARZ-R7 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, automotive, communications, and healthcare markets.
The ADP3050 product line delivers monolithic, high-voltage buck regulators optimized for rugged industrial and automotive power conversion where wide input range, fault resilience, and topology flexibility are critical.
FAQ
What is the maximum input voltage the ADP3050ARZ-R7 can withstand?
The ADP3050ARZ-R7 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. This makes it suitable for applications subject to load dump transients in automotive or industrial environments. Exceeding 60 V even briefly may cause permanent damage, as specified in the Absolute Maximum Ratings table.
Does the ADP3050ARZ-R7 require a specific type of output capacitor?
No, the ADP3050ARZ-R7 does not require a specific output capacitor type or ESR value. Its unique compensation scheme supports ceramic, tantalum, OS-CON, and aluminum electrolytic capacitors interchangeably. This eliminates capacitor-related instability risks and simplifies BOM management across different design revisions or supplier changes.
How does the BOOST pin function in the ADP3050ARZ-R7?
The BOOST pin on the ADP3050ARZ-R7 drives an external charge pump (diode + capacitor) to generate a voltage higher than VIN, which is used to fully saturate the internal NPN power switch. This reduces VCE(sat) to 0.65–0.95 V at 1 A, significantly lowering conduction losses and improving overall efficiency compared to non-boosted bipolar regulators.
Can the ADP3050ARZ-R7 be used in buck-boost or SEPIC configurations?
Yes, the ADP3050ARZ-R7 is explicitly configurable as a buck-boost or SEPIC regulator per the Applications Information section. Its current-mode architecture and flexible pinout (especially SWITCH and BOOST nodes) allow re-routing external components to implement these topologies - enabling negative output generation or regulation where VIN may fall below VOUT.
What is the purpose of the BIAS pin on the ADP3050ARZ-R7?
The BIAS pin on the ADP3050ARZ-R7 allows the device to draw its internal operating current from the regulated output (when ≥2.7 V) rather than the higher input supply. This improves light-load efficiency - especially in high VIN/VOUT ratio applications - by reducing input current draw. If unused, the pin may be left floating.
ADP3050ARZ-R7 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-R7 FAQ
1.How can I place an order for ADP3050ARZ-R7 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADP3050ARZ-R7 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-R7 reliable?
The price and inventory of ADP3050ARZ-R7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADP3050ARZ-R7 is usually 5 days.
3.What payment methods are accepted for ADP3050ARZ-R7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADP3050ARZ-R7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADP3050ARZ-R7?
ADP3050ARZ-R7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADP3050ARZ-R7 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-R7?
For technical support, including ADP3050ARZ-R7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADP3050ARZ-R7 requirements.
6.How does Aetrix verify that ADP3050ARZ-R7 is sourced from the original manufacturer or authorized distributors?
All ADP3050ARZ-R7 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-R7 meets industry standards.
7.What is the process for return or replacement of ADP3050ARZ-R7?
All ADP3050ARZ-R7 units undergo pre-shipment inspection (PSI). If there is an issue with ADP3050ARZ-R7, 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-R7 part is unused and in its original packaging.
Return procedure for ADP3050ARZ-R7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ADP3050ARZ-R7 Tags
-
TPS562201DDCR
Texas Instruments
-
MC34063ABD-TR
STMicroelectronics
-
TPS561201DDCR
Texas Instruments
-
MC33063ADR
Texas Instruments
-
MC34063ADR
Texas Instruments
-
TPS560200DBVR
Texas Instruments
-
AP3012KTR-G1
Diodes Incorporated
-
TLV61048DBVR
Texas Instruments
-
AZ34063UMTR-G1
Diodes Incorporated
-
TPS562200DDCR
Texas Instruments
-
AP62300TWU-7
Diodes Incorporated
-
MC34063EBD-TR
STMicroelectronics
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
