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Analog Devices Inc. ADP2387ACPZN-R7
- Part No.:
- ADP2387ACPZN-R7
- Manufacturer:
- Analog Devices Inc.
- Package:
- 24-WFQFN Exposed Pad, CSP
- Datasheet:
-
ADP2387ACPZN-R7.pdf
- Description:
- IC REG BUCK ADJ 6A 24LFCSP
- Quantity:
- Payment:
- Shipping:
Inventory:1,448
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Product details
Overview
ADP2387ACPZN-R7 from Analog Devices is a synchronous step-down DC-to-DC regulator with integrated 44 mΩ high-side and 11 mΩ low-side MOSFETs, delivering up to 6 A continuous output current across 4.5 V–20 V input range, 0.6 V–90%×VIN adjustable output, and programmable 200 kHz–1400 kHz switching frequency - deployed in communications infrastructure power rails.
For engineers reviewing the ADP2387ACPZN-R7 datasheet, ADP2387ACPZN-R7 pinout, ADP2387ACPZN-R7 application, or ADP2387ACPZN-R7 equivalent, key selection criteria include precision enable threshold (1.17 V typ), power-good accuracy (±5% hysteresis), external compensation flexibility, programmable current-limit via ILIM resistor, and thermal shutdown with 25°C hysteresis at 150°C junction.
Technical Context
The ADP2387ACPZN-R7 employs peak current-mode PWM control with fixed-frequency operation, enabling fast transient response and stable loop behavior using external RC compensation on the COMP pin. Its dual-MOSFET architecture eliminates external synchronous rectifier drivers while supporting startup into precharged outputs via reverse-current protection.
It integrates precision analog functions: 0.6 V ±1% reference voltage referenced to FB, 1.17 V enable threshold with 100 mV hysteresis, and open-drain PGOOD with 95%/105% rising/falling thresholds relative to VFB - all operating across −40°C to +125°C junction temperature range in a thermally enhanced 24-lead LFCSP.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5 V to 20 V - supports wide industrial and telecom input rails including 5 V, 12 V, and 18 V systems. |
| Output Current | 6 A continuous - enables single-regulator point-of-load supply for FPGA I/O banks or ASIC core rails. |
| Switching Frequency | 200 kHz to 1400 kHz, programmable via RT resistor - allows EMI optimization and inductor size trade-off. |
| Feedback Reference | 0.6 V ±1% - sets output voltage accuracy baseline; enables 1.0 V to 5.0 V regulation with standard resistor dividers. |
| Enable Threshold | 1.17 V typical rising, 1.07 V falling - provides precise power sequencing control without external comparators. |
| Power-Good Accuracy | ±5% rising/falling hysteresis around VFB - ensures reliable system reset assertion within tight voltage margins. |
| Thermal Shutdown | 150°C activation, 125°C recovery - protects against sustained overload or poor PCB thermal design. |
Pinout & Package
ADP2387ACPZN-R7 is housed in a 24-lead, 4 mm × 4 mm LFCSP package with exposed GND and SW thermal pads. The package uses lead-free, RoHS-compliant construction and requires soldering of both EP pads to large copper planes for thermal performance (θJA = 42.6°C/W, θJC(SW) = 6.8°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| COMP | Error amplifier output | Connect external RC network to set loop compensation; determines stability and transient response. |
| FB | Feedback voltage sense | Monitors output via resistor divider; regulates VOUT to 0.6 V reference with ±1% accuracy. |
| VREG | Internal 8 V bias rail | Powers internal logic; requires 1 µF ceramic capacitor to GND for noise suppression and regulation. |
| EN | Precision enable input | 1.17 V turn-on threshold enables controlled power-up; internal 5 µA pull-down ensures default disable. |
| PGOOD | Open-drain power-good flag | Asserts high when VOUT is within ±5% of target; requires external pull-up resistor (10 kΩ–100 kΩ). |
| RT | Frequency programming | Resistor to GND sets fSW from 200 kHz to 1400 kHz; 100 kΩ yields 600 kHz nominal. |
| ILIM | Current-limit threshold | Resistor to GND programs OCP threshold (e.g., 6.1 A typ with 66.5 kΩ); prevents inductor saturation. |
| SS | Soft start control | Capacitor to GND extends startup ramp; internal soft start = 1600 clock cycles (~2.7 ms at 600 kHz). |
| BST | Bootstrap supply | Supplies gate drive for high-side MOSFET; requires 0.1 µF ceramic capacitor between BST and SW. |
| SW | Switch node | Connects to inductor; multiple pins (1,5–7,18,26) reduce conduction loss and improve thermal spreading. |
| PGND | Power ground return | Low-side MOSFET source return; separate from analog GND to minimize noise coupling. |
| PVIN | Power input | High-current input path; 5 pins (16–19,20) reduce IR drop and enhance thermal dissipation. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated dual-MOSFET power stage | 44 mΩ HS / 11 mΩ LS RDS(on) enables >90% efficiency at 5 V/6 A, eliminating external driver complexity. |
| Programmable current-limit threshold | Set via ILIM resistor (e.g., 6.1 A typ with 66.5 kΩ), allowing inductor optimization for specific load profiles. |
| Startup into precharged output | Prevents reverse inductor current during hot-swap or backup power scenarios, avoiding output discharge. |
| External compensation | COMP pin access enables custom loop tuning for varied output capacitance, ESR, and load dynamics. |
| Hiccup-mode overcurrent protection | Enters 4096-cycle shutdown after 10 OCP events, then auto-retries - balances fault containment with system resilience. |
Applications
| Communications Infrastructure | Networking and Servers |
|---|---|
Use Scenario: Powering FPGA transceiver banks and SerDes interfaces in 5G baseband units requiring clean, tightly regulated 1.2 V or 1.8 V rails. IC Role / Device Role / Timing Role: Primary point-of-load regulator delivering 6 A with <1% output voltage deviation under dynamic load steps. Use Value: Integrated MOSFETs and external compensation ensure stable regulation despite rapid current transients from high-speed data links. | Use Scenario: Generating intermediate 3.3 V or 5.0 V rails for switch ASICs and PHY controllers in 10/25/100 GbE line cards. IC Role / Device Role / Timing Role: High-efficiency buck converter supplying power to multi-core packet processors with bursty load profiles. Use Value: Programmable 200–1400 kHz switching frequency allows EMI filtering alignment with system clock domains. |
| Industrial Instrumentation | Healthcare and Medical |
Use Scenario: Providing isolated 1.0 V or 2.5 V supplies for precision ADCs and DACs in portable test equipment with battery+adapter inputs. IC Role / Device Role / Timing Role: Input-flexible regulator operating from 4.5–20 V to support both Li-ion (8.4 V) and 12 V wall adapters. Use Value: 0.6 V ±1% reference and precision enable enable accurate calibration and low-power standby modes. | Use Scenario: Supplying critical 1.2 V core voltage to imaging SoCs in ultrasound or MRI subsystems where reliability is paramount. IC Role / Device Role / Timing Role: Safety-aware power manager with thermal shutdown (150°C), OVP (0.7 V FB trip), and hiccup-mode fault recovery. Use Value: Dual protection schemes prevent latch-up during sensor fault conditions while maintaining regulatory compliance. |
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 |
|---|---|---|---|
| LM61480RQWR | 4.5–36 V input, 8 A output, fixed 500 kHz/2.1 MHz options; no ILIM pin; integrated compensation. | Higher input voltage ceiling and current rating; less flexible frequency/current tuning but simpler layout. | Select when input exceeds 20 V or >6 A is required; avoid if programmable OCP or external compensation is needed. |
| TPS546B24RVFT | 4–18 V input, 10 A output, PMBus interface, digital loop compensation; 3.3 mm × 3.3 mm QFN. | Full digital control and telemetry; larger footprint than ADP2387ACPZN-R7's 4 mm × 4 mm LFCSP. | Select for systems requiring real-time telemetry, adaptive loop tuning, or strict PMBus compliance; not drop-in compatible. |
Compared with LM61480RQWR and TPS546B24RVFT, ADP2387ACPZN-R7 offers superior analog precision (0.6 V ±1% reference, 1.17 V EN threshold), dedicated ILIM programming for inductor optimization, and compact thermal LFCSP packaging - making it optimal for space-constrained, high-accuracy industrial and telecom PoL designs.
Availability
ADP2387ACPZN-R7 is available at Aetrix Electronics and suitable for communications infrastructure, networking servers, and industrial instrumentation requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.
Supply support for ADP2387ACPZN-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 ADP2387ACPZN-R7 belongs to Analog Devices' high-efficiency, integrated power management IC portfolio - designed specifically for demanding point-of-load applications where thermal performance, accuracy, and design flexibility are critical.
FAQ
What is the maximum output current capability of the ADP2387ACPZN-R7?
The ADP2387ACPZN-R7 delivers up to 6 A of continuous output current under specified thermal conditions (TA ≤ 85°C, proper PCB layout with exposed pad soldered). Peak current capability depends on programmed ILIM resistor value - e.g., 6.1 A typical with 66.5 kΩ - and is limited by thermal shutdown at 150°C junction temperature.
How does the ADP2387ACPZN-R7 handle startup into a precharged output?
The ADP2387ACPZN-R7 prevents reverse inductor current during startup into a precharged output by disabling the low-side MOSFET until the soft-start voltage exceeds the FB pin voltage. This avoids discharging the output capacitor and ensures controlled ramp-up even when VOUT is initially non-zero - a key feature for hot-swap and redundant power systems.
Can the ADP2387ACPZN-R7 operate with an input voltage below 4.5 V?
No - the ADP2387ACPZN-R7 has a minimum specified input voltage of 4.5 V per its absolute ratings and functional specifications. Operation below this level may result in UVLO activation (typical falling threshold 3.8 V) or failure to regulate. For sub-4.5 V applications, consider alternative regulators such as the ADP2301 or ADP2370 series.
What is the purpose of the VREG pin on the ADP2387ACPZN-R7?
On the ADP2387ACPZN-R7, the VREG pin provides a regulated 8 V internal supply for control circuitry. It must be decoupled with a 1 µF X7R/X5R ceramic capacitor to GND. The VREG regulator includes current limiting to protect against excessive external loading, ensuring robust internal biasing independent of PVIN fluctuations.
Does the ADP2387ACPZN-R7 support forced PWM or power-save mode?
The ADP2387ACPZN-R7 operates exclusively in fixed-frequency peak current-mode PWM - it does not include a power-save or pulse-skipping mode. This ensures constant switching frequency for predictable EMI behavior and consistent transient response across load ranges, aligning with its target use in noise-sensitive communications and instrumentation systems.
ADP2387ACPZN-R7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 24-WFQFN Exposed Pad, CSP
- 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):
- 4.5V
- Voltage - Input (Max):
- 20V
- Voltage - Output (Min/Fixed):
- 0.6V
- Voltage - Output (Max):
- 18V
- Current - Output:
- 6A
- Frequency - Switching:
- 200kHz ~ 1.4MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 24-LFCSP (4x4)
ADP2387ACPZN-R7 FAQ
1.How can I place an order for ADP2387ACPZN-R7 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADP2387ACPZN-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 ADP2387ACPZN-R7 reliable?
The price and inventory of ADP2387ACPZN-R7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADP2387ACPZN-R7 is usually 5 days.
3.What payment methods are accepted for ADP2387ACPZN-R7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADP2387ACPZN-R7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADP2387ACPZN-R7?
ADP2387ACPZN-R7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADP2387ACPZN-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 ADP2387ACPZN-R7?
For technical support, including ADP2387ACPZN-R7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADP2387ACPZN-R7 requirements.
6.How does Aetrix verify that ADP2387ACPZN-R7 is sourced from the original manufacturer or authorized distributors?
All ADP2387ACPZN-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 ADP2387ACPZN-R7 meets industry standards.
7.What is the process for return or replacement of ADP2387ACPZN-R7?
All ADP2387ACPZN-R7 units undergo pre-shipment inspection (PSI). If there is an issue with ADP2387ACPZN-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 ADP2387ACPZN-R7 part is unused and in its original packaging.
Return procedure for ADP2387ACPZN-R7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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