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Analog Devices Inc. ADP2390ACPZ-R7
- Part No.:
- ADP2390ACPZ-R7
- Manufacturer:
- Analog Devices Inc.
- Package:
- 32-VFQFN Exposed Pad, CSP
- Datasheet:
-
ADP2390ACPZ-R7.pdf
- Description:
- IC REG BUCK ADJ 12A 32LFCSP
- Quantity:
- Payment:
- Shipping:
Inventory:1,171
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Product details
Overview
ADP2390ACPZ-R7 from Analog Devices is a synchronous step-down DC-DC regulator with integrated 17 mΩ high-side and 4.5 mΩ low-side MOSFETs, delivering up to 12 A continuous output current from a 4.5 V to 18 V input. It features programmable switching frequency (200 kHz–2.2 MHz), ±10% accurate current limit, and PFM mode for light-load efficiency-used in server point-of-load and industrial intermediate rail conversion.
For engineers reviewing the ADP2390ACPZ-R7 datasheet, ADP2390ACPZ-R7 pinout, ADP2390ACPZ-R7 application, or ADP2390ACPZ-R7 equivalent, key selection factors include its 0.6 V ±0.5% reference voltage, external compensation capability, precision enable/PGOOD signaling, and thermal shutdown at 150°C with 25°C hysteresis.
Technical Context
The ADP2390ACPZ-R7 uses peak-current-mode PWM control with fixed-frequency operation and adds PFM mode exclusively for light-load efficiency optimization. Its internal 5 V VREG powers control circuitry, while bootstrap circuitry sustains high-side gate drive via BST-SW capacitor coupling.
It implements cycle-by-cycle overcurrent protection with hiccup-mode recovery, fast transient response via FTW-programmable window (±1% to ±2%), and precision UVLO (4.2 V rising / 3.7 V falling) with 0.5 V hysteresis. The device supports startup into precharged outputs and includes OVP (0.7 V FB threshold) and thermal shutdown (150°C trip, 125°C recovery).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5 V to 18 V - supports wide-input industrial and telecom rails without external pre-regulation. |
| Output Current | 12 A continuous - enables single-chip replacement of multi-phase controllers in space-constrained PoL designs. |
| Reference Voltage | 0.6 V ±0.5% - ensures tight output regulation across temperature (−40°C to +125°C junction). |
| Switching Frequency | 200 kHz to 2200 kHz - allows EMI tuning and inductor size optimization via RT resistor selection. |
| High-Side RDS(on) | 17 mΩ (typ.) - reduces conduction loss at high load, critical for >10 A efficiency at 12 VIN/1.2 VOUT. |
| Low-Side RDS(on) | 4.5 mΩ (typ.) - minimizes synchronous rectification loss, improving light-to-heavy load efficiency. |
| Current Limit Accuracy | ±10% - enables reliable inductor sizing and fault margining without derating for worst-case tolerance. |
| Thermal Shutdown | 150°C with 25°C hysteresis - prevents latch-up during transient overloads and ensures safe restart after cooling. |
Pinout & Package
The ADP2390ACPZ-R7 is housed in a thermally enhanced 32-lead, 5 mm × 5 mm LFCSP package with dual exposed pads: EP/GND (soldered to PCB ground plane) and EP/SW (connected to switch node copper area) to minimize θJA (41°C/W) and θJC (2.2°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SS | Soft Start Control | Capacitor-to-GND sets ramp time; prevents inrush current and enables controlled power-up into precharged outputs. |
| COMP | Error Amplifier Output | External RC network provides loop compensation-enables stability tuning across load and input conditions. |
| FB | Feedback Sense Input | Monitors resistor-divider output voltage; regulates VOUT to 0.6 V reference with ±0.5% accuracy. |
| VREG | Internal 5 V Regulator Output | Powers internal logic; requires 1 µF X7R/X5R ceramic bypass to GND for noise immunity and current-limit protection. |
| BST | Bootstrap Supply Rail | Provides gate drive voltage for high-side MOSFET; requires 0.1 µF X7R/X5R capacitor between BST and SW. |
| RT | Frequency Setting Input | Resistor-to-GND programs fSW per fSW = 67000/(RT + 12) kHz - enables EMI compliance and layout optimization. |
| ILIM | Current-Limit Threshold | Resistor-to-GND sets OCP threshold per IOCP = 1000/(RILIM + 0.5) A - supports precise inductor and layout safety margins. |
| FTW | Fast Transient Window | Resistor-to-GND configures ±1% to ±2% output deviation window to trigger enhanced transient response. |
| EN | Precision Enable Input | 1.2 V rising threshold with 100 mV hysteresis - enables robust power sequencing and UVLO programming. |
| PGOOD | Power-Good Output | Open-drain signal asserts after 16 switching cycles when FB is within ±10%; requires external pull-up. |
| SW | Switch Node | Connects to inductor; carries high di/dt switching current - must be routed with short, wide traces to EP/SW pad. |
| PGND | Power Ground | Return path for low-side MOSFET and input/output capacitors - isolated from analog GND to reduce noise coupling. |
| PVIN/VIN | Power Input Rails | PVIN supplies power stage; VIN powers control circuits - both require local low-ESR ceramic bypassing near pins. |
Key Features
| Feature | Design Value |
|---|---|
| PFM Mode Operation | Enables discontinuous conduction at light load to maintain >85% efficiency below 1 A - unique to ADP2390 vs. ADP2389. |
| Programmable Fast Transient Response | FTW pin adjusts detection window (±1% to ±2%) to activate enhanced load-step compensation without external circuitry. |
| Startup into Precharged Output | Prevents reverse current flow by disabling low-side MOSFET until SS voltage exceeds FB - eliminates need for external reverse-blocking diode. |
| External Compensation | COMP pin access allows full Type-II/III loop tuning - supports wide input/output ranges and varying output capacitance. |
| Hiccup-Mode Overcurrent Protection | Enters 7× soft-start-time shutdown on sustained overload, then auto-retries - protects MOSFETs and inductor under short-circuit conditions. |
| Integrated Bootstrap Regulator | Self-contained charge pump generates stable 5 V BST-SW voltage - eliminates need for external bootstrap diode or capacitor charge path. |
Applications
| Communication Infrastructure | Networking and Servers |
|---|---|
Use Scenario: Powering FPGA core voltage rails in 5G baseband units with dynamic load steps up to 8 A/µs. IC Role / Device Role / Timing Role: Primary point-of-load regulator delivering 0.85 V @ 10 A with <100 µs transient recovery. Use Value: PFM mode maintains >90% efficiency at idle; fast transient window reduces required output capacitance by 30%. | Use Scenario: Generating 1.2 V CPU core supply in rack-mounted servers with strict ripple (<10 mVpp) and sequencing requirements. IC Role / Device Role / Timing Role: High-current buck controller with precision EN/PGOOD for BIOS-controlled power sequencing. Use Value: 0.6 V ±0.5% reference and external compensation ensure ±1% output accuracy across line/load/temperature. |
| Industrial and Instrumentation | Healthcare and Medical |
Use Scenario: Intermediate 3.3 V rail for PLC I/O modules operating in −40°C to +85°C ambient with high EMI immunity needs. IC Role / Device Role / Timing Role: Robust DC-DC converter with UVLO hysteresis and thermal shutdown for unattended operation. Use Value: 4.2 V UVLO rising threshold prevents brownout glitches; 150°C thermal shutdown protects against heatsink failure. | Use Scenario: Powering imaging sensor arrays in portable ultrasound devices requiring low-noise, low-ripple 1.8 V supply. IC Role / Device Role / Timing Role: Low-noise synchronous buck with soft-start and PGOOD for system-level health monitoring. Use Value: External compensation and 5 mm × 5 mm LFCSP package enable compact, low-EMI layout meeting IEC 60601-1 emissions limits. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous step-down regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADP2389ACPZ-R7 | No PFM mode; identical pinout, specs, and package - differs only in light-load efficiency behavior. | Suitable where constant-frequency PWM is required for EMI predictability, even at light loads. | Select ADP2389ACPZ-R7 if deterministic switching frequency is mandatory; ADP2390ACPZ-R7 preferred for battery-backed or energy-sensitive systems. |
| TPS546B24RVFT | 60 V max input, 15 A rating, PMBus interface, integrated FETs - higher voltage range and digital control not present in ADP2390. | Used in higher-input industrial systems requiring telemetry, margining, or remote configuration. | Choose TPS546B24RVFT only when 18 V input ceiling is insufficient or digital interface is required; ADP2390ACPZ-R7 offers simpler analog design and lower BOM count. |
Compared with ADP2389ACPZ-R7, the ADP2390ACPZ-R7 adds PFM for superior light-load efficiency but shares identical pinout, compensation, and protection features; versus TPS546B24RVFT, it lacks PMBus but delivers lower cost, smaller footprint, and faster analog loop response for fixed-output applications.
Availability
ADP2390ACPZ-R7 is available at Aetrix Electronics and suitable for communication infrastructure, networking and servers, and industrial and instrumentation applications requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for ADP2390ACPZ-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 precision, industrial, automotive, and communications markets.
The ADP2390ACPZ-R7 belongs to Analog Devices' high-efficiency synchronous buck regulator product line, designed specifically for demanding point-of-load applications in servers, telecom equipment, and industrial systems where thermal performance and light-load efficiency are critical.
FAQ
What is the maximum input voltage rating for the ADP2390ACPZ-R7?
The ADP2390ACPZ-R7 has an absolute maximum PVIN and VIN rating of +22 V, but its specified operational input voltage range is 4.5 V to 18 V. Operating above 18 V may cause premature wear or violate SOA limits, even if within absolute maximum ratings. Always refer to the recommended operating conditions in the ADP2390ACPZ-R7 datasheet for reliable long-term performance.
Does the ADP2390ACPZ-R7 support startup into a precharged output?
Yes, the ADP2390ACPZ-R7 supports startup into a precharged output. It disables the low-side MOSFET until the soft start voltage on the SS pin exceeds the voltage at the FB pin, preventing reverse current flow. This feature eliminates the need for external reverse-blocking components and is confirmed in the ADP2390ACPZ-R7 datasheet Figure 23 and Theory of Operation section.
How does PFM mode operate in the ADP2390ACPZ-R7?
In PFM mode, the ADP2390ACPZ-R7 monitors the FB voltage directly: when FB drops below 0.605 V, it initiates switching to recharge the output capacitor; when FB rises above 0.62 V, it stops switching until FB falls again. This burst-mode operation reduces quiescent current and improves light-load efficiency - a feature exclusive to the ADP2390ACPZ-R7 (not ADP2389).
What is the purpose of the FTW pin on the ADP2390ACPZ-R7?
The FTW (Fast Transient Window) pin on the ADP2390ACPZ-R7 sets the output voltage deviation threshold (±1% to ±2%) that triggers enhanced transient response. When output voltage moves beyond this window, the controller increases bandwidth and duty-cycle slew rate to minimize undershoot/overshoot. The window is programmed using a resistor from FTW to GND per the equation: Threshold = 1 + (RFTW/200) %.
Can the ADP2390ACPZ-R7 be used without external compensation?
No, the ADP2390ACPZ-R7 requires external compensation via the COMP pin. It does not include internal compensation; users must connect an RC network from COMP to GND to stabilize the control loop. This design choice enables flexibility across diverse output capacitors, inductors, and operating conditions - a key differentiator confirmed in the ADP2390ACPZ-R7 General Description and Applications Information sections.
ADP2390ACPZ-R7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 32-VFQFN Exposed Pad, CSP
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Last Time Buy
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 4.5V
- Voltage - Input (Max):
- 18V
- Voltage - Output (Min/Fixed):
- 0.6V
- Voltage - Output (Max):
- 18V
- Current - Output:
- 12A
- Frequency - Switching:
- 200kHz ~ 2.2MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 32-LFCSP-VQ (5x5)
ADP2390ACPZ-R7 FAQ
1.How can I place an order for ADP2390ACPZ-R7 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADP2390ACPZ-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 ADP2390ACPZ-R7 reliable?
The price and inventory of ADP2390ACPZ-R7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADP2390ACPZ-R7 is usually 5 days.
3.What payment methods are accepted for ADP2390ACPZ-R7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADP2390ACPZ-R7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADP2390ACPZ-R7?
ADP2390ACPZ-R7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADP2390ACPZ-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 ADP2390ACPZ-R7?
For technical support, including ADP2390ACPZ-R7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADP2390ACPZ-R7 requirements.
6.How does Aetrix verify that ADP2390ACPZ-R7 is sourced from the original manufacturer or authorized distributors?
All ADP2390ACPZ-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 ADP2390ACPZ-R7 meets industry standards.
7.What is the process for return or replacement of ADP2390ACPZ-R7?
All ADP2390ACPZ-R7 units undergo pre-shipment inspection (PSI). If there is an issue with ADP2390ACPZ-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 ADP2390ACPZ-R7 part is unused and in its original packaging.
Return procedure for ADP2390ACPZ-R7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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