My Inquiry
My Account
Analog Devices Inc. ADP2301AUJZ-R7
- Part No.:
- ADP2301AUJZ-R7
- Manufacturer:
- Analog Devices Inc.
- Package:
- SOT-23-6 Thin, TSOT-23-6
- Datasheet:
-
ADP2301AUJZ-R7.pdf
- Description:
- IC REG BUCK ADJ 1.2A TSOT6
- Quantity:
- Payment:
- Shipping:
Inventory:6,580
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
ADP2301AUJZ-R7 from Analog Devices is a nonsynchronous step-down DC-DC regulator with integrated high-side MOSFET, 1.4 MHz switching frequency, ±2% output voltage accuracy over temperature, and 1.2 A maximum load current. It operates from 3.0 V to 20 V input and delivers regulated output down to 0.8 V - used in intermediate power rail conversion for communications equipment.
For engineers reviewing the ADP2301AUJZ-R7 datasheet, ADP2301AUJZ-R7 pinout, ADP2301AUJZ-R7 application, or ADP2301AUJZ-R7 equivalent, key selection factors include switching frequency trade-offs (1.4 MHz vs. 700 kHz), bootstrap capacitor placement (BST–SW), feedback voltage threshold (0.800 V), and thermal shutdown behavior (140°C trip, 15°C hysteresis).
Technical Context
The ADP2301AUJZ-R7 uses peak current-mode PWM control with automatic transition to pulse-skip mode at light loads, enabling high efficiency (up to 91%) across wide load ranges. Its fixed 1.4 MHz oscillator enables compact external component selection - especially smaller inductors and ceramic capacitors - while internal slope compensation prevents subharmonic oscillation above 50% duty cycle.
Integrated bootstrap regulation generates ~5.0 V gate drive between BST and SW pins using a 0.1 µF ceramic capacitor; precision enable (1.20 V threshold, 100 mV hysteresis) supports supply sequencing and programmable UVLO via resistive divider. Internal soft start (730 µs typical) limits inrush current during power-up.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Switching Frequency | 1.4 MHz - enables use of smaller inductors (e.g., 4.7 µH) and reduces solution footprint vs. 700 kHz variant. |
| Max Output Current | 1.2 A - supports digital load applications such as FPGA core rails or microcontroller I/O supplies. |
| Feedback Voltage | 0.800 V ±0.016 V (−40°C to +125°C) - sets output voltage via external resistor divider; enables 0.8 V minimum VOUT. |
| Input Voltage Range | 3.0 V to 20 V - accommodates 5 V, 12 V, and 19 V intermediate bus architectures without pre-regulation. |
| Efficiency | Up to 91% at 1 A, VIN = 12 V, VOUT = 5.0 V - achieved via low RDS(ON) high-side MOSFET (700 mΩ max) and optimized gate drive. |
| Thermal Shutdown | 140°C trip with 15°C hysteresis - protects against sustained overload or poor PCB thermal design; recovery requires junction cooling to ≤125°C. |
| Soft Start Time | 730 µs typical - controls output ramp rate to limit inrush current into downstream capacitance. |
Pinout & Package
ADP2301AUJZ-R7 is housed in a 6-lead TSOT package (2.9 mm × 1.6 mm × 0.85 mm), optimized for thermal performance on standard PCBs (θJA = 186°C/W on JEDEC 4-layer board).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| BST | Bootstrap supply for high-side MOSFET gate driver | Must be decoupled to SW with 0.1 µF X5R/X7R ceramic capacitor; provides floating ~5.0 V bias for gate turn-on. |
| GND | Power ground reference | Low-impedance connection to PCB ground plane required for stable regulation and EMI control. |
| FB | Feedback voltage sense input | Monitors resistive divider output; regulates VOUT by maintaining 0.800 V at this pin. |
| EN | Enable control with hysteresis | Active-high logic input; 1.20 V threshold with 100 mV hysteresis; 1.2 µA internal pull-down prevents floating. |
| VIN | Main power input | Accepts 3.0–20 V; requires local 10 µF ceramic bypass capacitor directly to GND. |
| SW | Switch node output | Connects to inductor (to VOUT) and catch diode anode (to GND); carries high dv/dt switching waveform. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated high-side MOSFET | Eliminates need for external switch; RDS(ON) ≤ 700 mΩ ensures low conduction loss at 1.2 A. |
| Automatic PFM/PWM mode switching | Maintains >85% efficiency down to 10 mA load by entering pulse-skip mode - critical for battery-powered standby operation. |
| Internal soft start | Fixed 730 µs ramp time prevents inrush current damage to input capacitors and upstream regulators. |
| Precision enable with hysteresis | Enables reliable power sequencing with other rails and allows programmable UVLO using external resistor divider. |
| Undervoltage lockout (UVLO) | Shuts down at VIN < 2.4 V (falling) and re-enables at VIN > 2.8 V (rising) - prevents erratic operation during brownout conditions. |
Applications
| Communications Equipment Power | Industrial Sensor Node Supply |
|---|---|
Use Scenario: Providing 3.3 V or 5.0 V intermediate rail from 12 V backplane in Ethernet switches or baseband units. IC Role / Device Role / Timing Role: Nonsynchronous buck regulator converting unregulated 12 V to stable 3.3 V at up to 1.2 A for PHY and MAC ICs. Use Value: 1.4 MHz operation allows compact 4.7 µH inductor and 10 µF output capacitor, reducing board area by >30% vs. 700 kHz solution. | Use Scenario: Generating 1.8 V or 2.5 V supply for low-power microcontrollers and analog front-ends in wired/wireless sensor transmitters. IC Role / Device Role / Timing Role: Efficient step-down converter delivering regulated output from 5 V or 12 V field bus with minimal quiescent current (640 µA). Use Value: Automatic PFM mode maintains >87% efficiency at 20 mA load, extending battery life in remote monitoring nodes. |
| Medical Diagnostic Instrument | Consumer Audio DSP Supply |
Use Scenario: Powering ADCs, DACs, and FPGA configuration circuits in portable ultrasound or patient monitors requiring clean, stable 1.2 V or 1.8 V rails. IC Role / Device Role / Timing Role: Low-noise, thermally robust DC-DC regulator with ±2% output accuracy over −40°C to +125°C junction range. Use Value: Integrated soft start (730 µs) and thermal shutdown (140°C) ensure safe startup and fault containment in sealed enclosures. | Use Scenario: Replacing LDOs in portable speakers or soundbars to improve efficiency when powering 3.3 V audio codecs or 1.2 V DSP cores from single-cell Li-ion (4.2 V max). IC Role / Device Role / Timing Role: High-efficiency buck converter operating from 3.3–4.2 V input to deliver 1.2 V/1.8 V at up to 1.2 A with minimal heat rise. Use Value: 91% peak efficiency at 1 A reduces thermal load vs. LDO alternatives, enabling thinner mechanical designs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar nonsynchronous step-down regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADP2300AUJZ-R7 | 700 kHz switching frequency; 1460 µs soft start; higher minimum off time (190 ns vs. 120 ns). | Better efficiency at medium-to-heavy loads with larger inductors (10 µH); less suitable for ultra-compact layouts. | Select ADP2300AUJZ-R7 when board space is less constrained and peak efficiency at 500–1200 mA is prioritized over size. |
| TPS562201DDCR | Synchronous architecture; 4.5–17 V input; 2 A max output; no external catch diode required. | Higher efficiency at light loads due to synchronous rectification; requires different layout (no BST/SW capacitor needed). | Choose TPS562201DDCR when >93% efficiency across full load range is required and synchronous operation is acceptable. |
Compared with ADP2300AUJZ-R7, ADP2301AUJZ-R7 trades slightly lower light-load efficiency for significantly smaller passive components and faster transient response; versus TPS562201DDCR, it avoids synchronous complexity and external diode dependency but requires careful BST capacitor placement and yields ~2% lower peak efficiency.
Availability
ADP2301AUJZ-R7 is available at Aetrix Electronics and suitable for communications infrastructure, industrial sensor nodes, and portable medical instrumentation requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.
Supply support for ADP2301AUJZ-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, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, headquartered in Norwood, MA.
The ADP2300/ADP2301 product line delivers compact, high-efficiency nonsynchronous buck regulators targeting space-constrained applications where simplicity, thermal robustness, and wide input voltage range are critical - especially in intermediate power rail conversion.
FAQ
What is the switching frequency of the ADP2301AUJZ-R7?
The ADP2301AUJZ-R7 operates at a fixed 1.4 MHz switching frequency, with typical variation from 1.0 MHz to 1.75 MHz over temperature and input voltage. This higher frequency enables smaller external inductors and capacitors compared to the 700 kHz ADP2300 variant, reducing overall solution size while maintaining up to 91% efficiency at 1 A load.
How is the output voltage set on the ADP2301AUJZ-R7?
The ADP2301AUJZ-R7 uses a resistive voltage divider from VOUT to FB to set output voltage, referenced to its internal 0.800 V feedback threshold. For example, a 31.6 kΩ top resistor and 10.2 kΩ bottom resistor yields 3.3 V output. The FB pin draws only 0.01–0.1 µA, minimizing divider current error and enabling high-resistance values to reduce power loss.
Does the ADP2301AUJZ-R7 require an external catch diode?
Yes, the ADP2301AUJZ-R7 is a nonsynchronous buck regulator and requires an external Schottky catch diode connected from the SW pin to GND. Recommended devices include B230A (2 A, 30 V) or equivalent low-forward-voltage diodes. The integrated bootstrap circuit powers the high-side MOSFET but does not replace the need for this external diode.
What protection features does the ADP2301AUJZ-R7 include?
The ADP2301AUJZ-R7 integrates undervoltage lockout (UVLO), overcurrent protection (OCP), thermal shutdown (140°C trip with 15°C hysteresis), and short-circuit protection with frequency foldback. During hard shorts, switching frequency reduces to ¼ fSW to limit average output current and prevent runaway, followed by soft-start recovery upon fault removal.
Can the ADP2301AUJZ-R7 operate with input voltage below 3.0 V?
No - the absolute minimum input voltage for functional operation is 3.0 V per datasheet specifications. Below this, UVLO disables the device. At VIN = 3.0 V, the regulator can still deliver 0.8 V output if the bootstrap circuit maintains sufficient voltage margin (BST–SW ≥ 1.2 V), but efficiency drops significantly and minimum on-time limitations constrain achievable duty cycle.
ADP2301AUJZ-R7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- SOT-23-6 Thin, TSOT-23-6
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 3V
- Voltage - Input (Max):
- 20V
- Voltage - Output (Min/Fixed):
- 0.8V
- Voltage - Output (Max):
- 17V
- Current - Output:
- 1.2A
- Frequency - Switching:
- 1.4MHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TSOT-6
ADP2301AUJZ-R7 FAQ
1.How can I place an order for ADP2301AUJZ-R7 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADP2301AUJZ-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 ADP2301AUJZ-R7 reliable?
The price and inventory of ADP2301AUJZ-R7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADP2301AUJZ-R7 is usually 5 days.
3.What payment methods are accepted for ADP2301AUJZ-R7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADP2301AUJZ-R7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADP2301AUJZ-R7?
ADP2301AUJZ-R7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADP2301AUJZ-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 ADP2301AUJZ-R7?
For technical support, including ADP2301AUJZ-R7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADP2301AUJZ-R7 requirements.
6.How does Aetrix verify that ADP2301AUJZ-R7 is sourced from the original manufacturer or authorized distributors?
All ADP2301AUJZ-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 ADP2301AUJZ-R7 meets industry standards.
7.What is the process for return or replacement of ADP2301AUJZ-R7?
All ADP2301AUJZ-R7 units undergo pre-shipment inspection (PSI). If there is an issue with ADP2301AUJZ-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 ADP2301AUJZ-R7 part is unused and in its original packaging.
Return procedure for ADP2301AUJZ-R7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ADP2301AUJZ-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…
