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Analog Devices Inc. ADP2300AUJZ-R2
- Part No.:
- ADP2300AUJZ-R2
- Manufacturer:
- Analog Devices Inc.
- Package:
- SOT-23-6 Thin, TSOT-23-6
- Datasheet:
-
ADP2300AUJZ-R2.pdf
- Description:
- IC REG BUCK ADJ 1.2A TSOT6
- Quantity:
- Payment:
- Shipping:
Inventory:211
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Product details
Overview
ADP2300AUJZ-R2 from Analog Devices is a nonsynchronous step-down DC-DC regulator with integrated high-side MOSFET, 700 kHz fixed 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 industrial instrumentation and communications equipment.
For engineers reviewing the ADP2300AUJZ-R2 datasheet, ADP2300AUJZ-R2 pinout, ADP2300AUJZ-R2 application, or ADP2300AUJZ-R2 equivalent, key selection factors include its 700 kHz switching frequency (vs. 1.4 MHz ADP2301), TSOT-6 package footprint, internal soft start (1460 µs), precision enable threshold (1.2 V), and bootstrap-integrated gate drive architecture.
Technical Context
The ADP2300AUJZ-R2 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 internal compensation, slope compensation, and fixed 700 kHz oscillator eliminate external loop components while supporting stable operation at duty cycles >50%.
It integrates bootstrap regulation (5.0 V typical BST–SW voltage), undervoltage lockout (2.95 V rising threshold), thermal shutdown (140°C), and cycle-by-cycle overcurrent protection. The 0.8 V feedback reference enables precise output programming via external resistor divider, with FB bias current ≤0.1 µA.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Switching Frequency | 700 kHz - enables compact magnetics and EMI filtering vs. lower-frequency alternatives; optimized for balance of efficiency and solution size. |
| Max Output Current | 1.2 A - supports mid-power digital loads such as FPGAs, microcontrollers, and interface ICs without external current boosting. |
| Input Voltage Range | 3.0 V to 20 V - accommodates wide-input applications including 12 V industrial rails, 5 V USB-powered systems, and battery-backed instrumentation. |
| Feedback Reference | 0.800 V ±0.016 V (−40°C to +125°C) - enables accurate output setting down to 0.8 V with minimal drift; supports low-voltage core supplies. |
| Enable Threshold | 1.20 V ±0.07 V with 100 mV hysteresis - allows reliable supply sequencing and programmable UVLO using resistive dividers on EN pin. |
| Thermal Shutdown | 140°C with 15°C hysteresis - protects against sustained overload or poor PCB thermal design; recovery requires junction cooling to ≤125°C before soft start restart. |
| Soft Start Time | 1460 µs - limits inrush current during power-up; prevents input rail sag and avoids false triggering of upstream UVLO circuits. |
Pinout & Package
ADP2300AUJZ-R2 is housed in a 6-lead TSOT package (2.9 mm × 1.6 mm × 0.85 mm), optimized for space-constrained PCB layouts and thermally efficient mounting on 4-layer JEDEC-standard boards (θJA = 186°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| BST | Bootstrap supply for high-side MOSFET gate driver | Requires 0.1 µF X5R/X7R ceramic capacitor between BST and SW; maintains ≥1.2 V differential to turn on MOSFET; internally regulated to ~5.0 V. |
| GND | Power ground reference | Must connect directly to low-impedance ground plane; serves as return path for switch node current and feedback reference. |
| FB | Output voltage feedback sense input | Monitors resistive divider from VOUT; regulates output by comparing to 0.8 V internal reference; bias current ≤0.1 µA minimizes divider error. |
| EN | Enable control with hysteresis | Pull ≥1.2 V to enable; pull ≤1.1 V to disable; 1.2 µA internal pull-down prevents floating; supports programmable UVLO via resistor divider. |
| VIN | Main power input | Accepts 3.0–20 V; requires local 1 µF ceramic bypass capacitor to GND; feeds internal LDO, gate driver, and control circuitry. |
| SW | Switch node output | Connects to inductor and catch diode anode; carries high dv/dt switching waveform; must be routed with minimal loop area to reduce EMI. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated high-side MOSFET | Reduces BOM count and layout complexity; RDS(on) = 440–700 mΩ ensures low conduction loss at 1.2 A continuous load. |
| Automatic PFM/PWM mode switching | Maintains >85% efficiency at 10 mA load (PFM) and >90% at 1 A (PWM); eliminates need for external mode-control logic. |
| Internal soft start & compensation | 1460 µs ramp time prevents inrush; eliminates external compensation network - reduces design time and component risk. |
| Current-mode control with slope compensation | Enables stable operation up to 90% duty cycle; prevents subharmonic oscillation without external ramp injection. |
| Integrated bootstrap diode | Removes need for external bootstrap diode; simplifies layout and improves reliability in high-density power designs. |
Applications
| Industrial Instrumentation Power | Communications Board Rail |
|---|---|
Use Scenario: Providing clean, regulated 3.3 V or 5.0 V to analog front-ends, ADCs, and isolated UART transceivers in handheld test equipment. IC Role / Device Role / Timing Role: Nonsynchronous buck regulator delivering stable intermediate rail with <±2% output accuracy over −40°C to +125°C. Use Value: Eliminates need for discrete MOSFET + controller solutions; 700 kHz switching allows use of small 4.7 µH inductors and 10–22 µF ceramic output capacitors. | Use Scenario: Generating 1.2 V or 1.8 V core supply for Ethernet PHYs or packet processors on telecom line cards. IC Role / Device Role / Timing Role: Step-down converter operating from 12 V backplane; configured for 0.8 V feedback reference to support low-voltage logic rails. Use Value: Precision enable pin (1.2 V threshold) enables controlled power sequencing with FPGA I/O banks; internal soft start prevents bus contention during hot-plug events. |
| Medical Sensor Module Supply | Consumer IoT Node Power |
Use Scenario: Powering low-noise signal chains (op-amps, sensors, SAR ADCs) in portable patient monitors with battery + wall adapter input. IC Role / Device Role / Timing Role: Efficient 3.0–20 V input regulator delivering 2.5 V or 3.3 V with <10 mV load regulation error at 1.2 A. Use Value: High efficiency (>90% at 500 mA) extends battery life; thermal shutdown (140°C) and OCP protect against sensor cable shorts or connector faults. | Use Scenario: Supplying 1.2 V to ARM Cortex-M microcontrollers and BLE radios in compact smart home devices powered from 5 V USB. IC Role / Device Role / Timing Role: Compact 6-lead TSOT buck converter enabling minimal PCB area usage while supporting dynamic load steps up to 1 A. Use Value: Pulse-skip mode maintains >85% efficiency at 20 mA sleep current; 700 kHz frequency eases EMI compliance in unshielded consumer enclosures. |
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 |
|---|---|---|---|
| ADP2301AUJZ-R2 | 1.4 MHz switching frequency, 730 µs soft start, lower minimum off time (70 ns vs. 145 ns) | Better suited for ultra-compact designs requiring smallest possible inductors/capacitors; higher frequency increases light-load switching losses | Select ADP2301AUJZ-R2 when board area is critical and input voltage is ≥5 V; ADP2300AUJZ-R2 preferred for 3.3 V input or higher efficiency at medium loads. |
| TPS562201DDCR | Synchronous rectification, 4.5–17 V input, 2 A max, 580 kHz, no integrated bootstrap diode | Higher efficiency at full load due to synchronous FET; requires external bootstrap capacitor and gate drive routing | Choose TPS562201DDCR for efficiency-critical 12 V input apps above 800 mA; ADP2300AUJZ-R2 offers simpler layout and lower component count for cost-sensitive 3–20 V designs. |
Compared with ADP2301AUJZ-R2 and TPS562201DDCR, ADP2300AUJZ-R2 provides optimal trade-off of simplicity, thermal robustness, and mid-frequency performance - especially where 700 kHz enables better EMI filtering and compatibility with legacy 3.3 V/5 V input sources.
Availability
ADP2300AUJZ-R2 is available at Aetrix Electronics and suitable for industrial instrumentation, communications board rails, and medical sensor modules requiring stable component supply with guaranteed long-term availability and traceable sourcing.
Supply support for ADP2300AUJZ-R2 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 was designed for compact, high-efficiency intermediate power conversion in space-constrained industrial, instrumentation, and communications systems - emphasizing integration, thermal resilience, and ease of use.
FAQ
What is the switching frequency of the ADP2300AUJZ-R2?
The ADP2300AUJZ-R2 operates at a fixed 700 kHz switching frequency, as defined by its internal oscillator. This frequency is factory-set and not user-adjustable. It differs from the ADP2301AUJZ-R2, which runs at 1.4 MHz. The 700 kHz option balances efficiency, magnetic component size, and EMI filter requirements - making ADP2300AUJZ-R2 well-suited for applications where thermal performance and board-level noise suppression are prioritized over minimal footprint.
Does the ADP2300AUJZ-R2 require an external bootstrap diode?
No, the ADP2300AUJZ-R2 integrates a bootstrap diode internally, eliminating the need for an external component. A 0.1 µF ceramic capacitor must still be placed between the BST and SW pins to form the floating gate-drive supply. This integration reduces bill-of-materials count, improves reliability, and simplifies PCB layout - a key differentiator versus controllers requiring discrete high-side drivers.
What is the minimum output voltage supported by the ADP2300AUJZ-R2?
The ADP2300AUJZ-R2 supports output voltages as low as 0.8 V, set by its internal 0.800 V feedback reference voltage. This is achieved using an external resistive divider from VOUT to FB. The ±2% accuracy over temperature (−40°C to +125°C) ensures stable low-voltage core supplies for modern microcontrollers and FPGAs, even under thermal stress conditions.
How does the ADP2300AUJZ-R2 handle overcurrent conditions?
The ADP2300AUJZ-R2 implements cycle-by-cycle overcurrent protection (OCP) that limits peak inductor current to 1.5–2.5 A depending on VIN and temperature. During hard short-circuit events, it activates frequency foldback - reducing switching frequency to ½ fSW or ¼ fSW based on FB pin voltage - to limit average output current and prevent thermal runaway. Recovery includes a full soft start cycle to avoid output overshoot.
Can the ADP2300AUJZ-R2 be used with a 3.3 V input supply?
Yes, the ADP2300AUJZ-R2 supports input voltages as low as 3.0 V, making it fully compatible with 3.3 V input rails. At this input, it can deliver regulated outputs down to 0.8 V (e.g., 1.2 V or 1.8 V) with proper inductor and output capacitor selection. Efficiency remains >85% at light loads due to automatic PFM mode, and the 700 kHz frequency ensures stable operation without minimum on-time constraints dominating design margins.
ADP2300AUJZ-R2 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:
- 700kHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TSOT-6
ADP2300AUJZ-R2 FAQ
1.How can I place an order for ADP2300AUJZ-R2 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADP2300AUJZ-R2 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 ADP2300AUJZ-R2 reliable?
The price and inventory of ADP2300AUJZ-R2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADP2300AUJZ-R2 is usually 5 days.
3.What payment methods are accepted for ADP2300AUJZ-R2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADP2300AUJZ-R2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADP2300AUJZ-R2?
ADP2300AUJZ-R2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADP2300AUJZ-R2 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 ADP2300AUJZ-R2?
For technical support, including ADP2300AUJZ-R2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADP2300AUJZ-R2 requirements.
6.How does Aetrix verify that ADP2300AUJZ-R2 is sourced from the original manufacturer or authorized distributors?
All ADP2300AUJZ-R2 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 ADP2300AUJZ-R2 meets industry standards.
7.What is the process for return or replacement of ADP2300AUJZ-R2?
All ADP2300AUJZ-R2 units undergo pre-shipment inspection (PSI). If there is an issue with ADP2300AUJZ-R2, 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 ADP2300AUJZ-R2 part is unused and in its original packaging.
Return procedure for ADP2300AUJZ-R2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ADP2300AUJZ-R2 Tags
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