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Analog Devices Inc. ADP2166ACPZ-1.0-R7
- Part No.:
- ADP2166ACPZ-1.0-R7
- Manufacturer:
- Analog Devices Inc.
- Package:
- 24-WFQFN Exposed Pad, CSP
- Datasheet:
-
ADP2166ACPZ-1.0-R7.pdf
- Description:
- IC REG BUCK 1V 6A 24LFCSP
- Quantity:
- Payment:
- Shipping:
Inventory:4,967
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Product details
Overview
ADP2166ACPZ-1.0-R7 from Analog Devices is a 6 A, synchronous step-down DC-to-DC regulator with fixed 1.0 V output, integrated high-side (19 mΩ) and low-side (15 mΩ) MOSFETs, 0.6 V ±1% reference voltage, and output voltage tracking capability-designed for point-of-load regulation in FPGA core supplies requiring tight sequencing and high power density.
For engineers reviewing the ADP2166ACPZ-1.0-R7 datasheet, ADP2166ACPZ-1.0-R7 pinout, ADP2166ACPZ-1.0-R7 application, or ADP2166ACPZ-1.0-R7 equivalent, this page delivers verified technical context, real-world design meaning of key specs, validated pin functions, confirmed alternatives, and supply support for industrial and embedded power designs.
Technical Context
The ADP2166ACPZ-1.0-R7 employs current-mode PWM control with programmable switching frequency (250 kHz–1.4 MHz), external compensation, and precision enable/PGOOD signaling. Its integrated 19 mΩ high-side and 15 mΩ low-side FETs enable high efficiency across 2.7 V–5.5 V input range while supporting startup into precharged outputs and accurate voltage tracking via the TRK pin.
It features a 0.6 V feedback reference with ±1% tolerance over −40°C to +125°C, hiccup-mode overcurrent protection with 9 A typical peak current limit, and thermal shutdown at 150°C with 25°C hysteresis-enabling robust operation in dense PCB layouts without forced airflow.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 6 A continuous-supports high-current FPGA core rails without external current sharing. |
| Input Voltage Range | 2.7 V to 5.5 V-compatible with single-cell Li-ion, 3.3 V, and 5 V intermediate bus architectures. |
| Fixed Output Voltage | 1.0 V ±1%-meets strict core voltage tolerances for modern processors and ASICs. |
| High-Side RDS(on) | 19 mΩ @ 5 V BST-reduces conduction loss and improves full-load efficiency above 90%. |
| Low-Side RDS(on) | 15 mΩ @ 5 V PVIN-minimizes synchronous rectification loss during light-to-moderate loads. |
| Feedback Reference | 0.6 V ±1% over temperature-ensures stable regulation across industrial temperature range. |
| Switching Frequency | Fixed 620 kHz or 1.2 MHz, or adjustable 250 kHz–1.4 MHz-enables EMI optimization and inductor size trade-offs. |
| Thermal Resistance θJA | 38.3°C/W (24-lead LFCSP)-validates thermal performance on standard 4-layer JEDEC boards. |
Pinout & Package
ADP2166ACPZ-1.0-R7 is housed in a 24-lead, 4 mm × 4 mm LFCSP package with exposed thermal pad soldered to PCB ground plane for enhanced thermal dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (SYNC) | Synchronization Input | Accepts external clock (250 kHz–1.4 MHz); enables phase-aligned or 180° out-of-phase operation when RT is tied to VREG or floating. |
| 2 (RT) | Frequency Setting | Resistor-to-GND sets switching frequency; floating = 620 kHz, tied to VREG = 1.2 MHz-no external oscillator required. |
| 3 (TRK) | Tracking Input | Enables output voltage to follow master rail (e.g., FPGA I/O voltage); supports precise power sequencing without external circuitry. |
| 4 (SS) | Soft Start Control | Capacitor-to-GND programs soft-start ramp time; prevents inrush current and allows safe startup into precharged outputs. |
| 5 (COMP) | Error Amplifier Output | Connects to external RC compensation network-provides full loop stability control for varied output capacitor ESR/ESL. |
| 6 (FB) | Feedback Sense Input | Monitors output via resistor divider; regulates to 0.6 V reference-enables fixed 1.0 V output or adjustable configurations. |
| 7 (GND) | Analog Ground | Reference node for internal analog circuits; must be connected to clean ground plane separate from PGND return paths. |
| 8 (PGOOD) | Power-Good Output | Open-drain signal asserts after FB stabilizes within ±10% for 16 clock cycles-enables system-level power sequencing and fault detection. |
| 9 (BST) | Bootstrap Supply | Drives high-side gate via 0.1 µF ceramic capacitor to SW-ensures reliable high-side FET turn-on across input range. |
| 10–13 (PGND) | Power Ground | Low-impedance return path for high di/dt switch currents; must connect directly to output capacitor negative terminal. |
| 14–17 (SW) | Switching Node | Connects to inductor and BST capacitor; carries full switching waveform-requires minimal loop area for EMI control. |
| 18–21 (PVIN) | Power Input | Primary input supply connection (2.7 V–5.5 V); bypassed with ceramic capacitor close to pins to suppress high-frequency noise. |
| 22 (AVIN) | Bias Voltage Input | Supplies internal regulator; decoupled with 10 Ω resistor + ceramic cap-improves noise immunity vs. direct PVIN tie. |
| 23 (EN) | Precision Enable | 1.2 V threshold with 100 mV hysteresis; internal 1 MΩ pull-down ensures default disable-supports controlled power-up timing. |
| 24 (VREG) | Internal Bias Regulator | 3.3 V ±0.2 V output powers internal logic; requires 1 µF ceramic bypass-eliminates need for external bias supply. |
| EPAD | Exposed Thermal Pad | Soldered to PCB ground plane-reduces junction-to-board thermal resistance by >50% versus non-thermal-pad packages. |
Key Features
| Feature | Design Value |
|---|---|
| Voltage Tracking Input (TRK) | Enables precise output sequencing with master rail (e.g., FPGA core/I/O), eliminating need for external tracking ICs or discrete solutions. |
| Programmable Soft Start (SS) | Capacitor-controlled ramp prevents inrush current and allows safe startup into precharged outputs-critical for hot-swap and multi-rail systems. |
| External Compensation (COMP) | Full control over loop dynamics via RC network-supports wide range of output capacitors (ceramic, polymer, hybrid) without stability compromise. |
| Power-Good with Deglitch (PGOOD) | 16-cycle validation window ensures reliable rail monitoring before system release-prevents false assertions during transients or brownouts. |
| Hiccup-Mode Overcurrent Protection | Auto-retry behavior after 10 current-limit events limits thermal stress during sustained overload-preserves reliability without manual reset. |
| Thermal Shutdown with Hysteresis | 150°C trip with 25°C hysteresis prevents thermal cycling; soft start resumes upon cooldown-maintains system availability in thermally constrained environments. |
Applications
| FPGA Core Power Supply | DSP Processor Rail |
|---|---|
|
Use Scenario: Supplies 1.0 V core voltage to Xilinx Kintex or Intel Stratix FPGA under dynamic load conditions up to 6 A. IC Role / Device Role / Timing Role: Primary synchronous buck regulator delivering regulated core voltage with tracking to I/O rail for safe power-up sequencing. Use Value: Integrated 19 mΩ/15 mΩ FETs and 0.6 V reference ensure ±1% output accuracy and >92% efficiency at 4 A, reducing board area and thermal management complexity. |
Use Scenario: Powers TI C6000 or Analog Devices SHARC DSP cores requiring fast transient response and low-noise 1.0 V supply. IC Role / Device Role / Timing Role: High-bandwidth current-mode controller with 620 kHz switching and external compensation for optimized load-step performance. Use Value: 100 ns minimum on/off times and 9 A peak current limit enable sub-100 ns recovery from 1 A–5 A load steps-meeting DSP core transient specifications. |
| Industrial PLC CPU Module | Medical Imaging Sensor Interface |
|
Use Scenario: Delivers 1.0 V to ARM Cortex-A9-based PLC CPU operating continuously in −40°C to +85°C ambient. IC Role / Device Role / Timing Role: Robust point-of-load regulator with UVLO, OVP, TSD, and hiccup-mode protection for unattended operation. Use Value: −40°C to +125°C junction rating, 38.3°C/W θJA, and 150°C thermal shutdown ensure long-term reliability in sealed enclosures without active cooling. |
Use Scenario: Powers high-speed ADC/DAC interface ASICs in portable ultrasound or MRI front-end modules. IC Role / Device Role / Timing Role: Low-noise, low-ripple 1.0 V supply with precise enable/PGOOD coordination for synchronized sensor data acquisition. Use Value: 0.6 V reference ±1%, PGOOD deglitching, and EN hysteresis prevent false resets during EMI-rich imaging pulses-ensuring data integrity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS546B24RVFT | 6 A, 1.0 V fixed, 2.7–16 V input, integrated FETs (3.5 mΩ HS / 1.5 mΩ LS), PMBus interface, no TRK pin. | Lacks voltage tracking; adds digital telemetry but increases BOM cost and firmware dependency. | Choose for systems needing telemetry and wider input range; avoid where analog sequencing is mandatory. |
| MP2451DT-LF-Z | 0.6–2.5 A, adjustable output, 3.3–36 V input, external FETs, no tracking, no PGOOD, 500 kHz fixed frequency. | Lower current rating, no integrated FETs, no TRK or PGOOD-requires additional components for equivalent functionality. | Choose only for cost-sensitive, low-current (<2.5 A), non-sequencing applications with wide input range. |
Compared with TPS546B24RVFT and MP2451DT-LF-Z, the ADP2166ACPZ-1.0-R7 uniquely combines 6 A capability, 1.0 V fixed output, analog voltage tracking, and PGOOD in a compact LFCSP-making it optimal for FPGA/DSP core supplies where sequencing integrity and analog simplicity are critical.
Availability
ADP2166ACPZ-1.0-R7 is available at Aetrix Electronics and suitable for FPGA core power, DSP processor rails, industrial PLC CPU modules, and medical imaging sensor interfaces requiring stable component supply and long-term production continuity.
Supply support for ADP2166ACPZ-1.0-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 since 1965.
The ADP2166ACPZ-1.0-R7 belongs to Analog Devices' ADP216x family of high-efficiency synchronous buck regulators-engineered specifically for high-density point-of-load applications demanding precision sequencing, robust protection, and thermal resilience.
FAQ
What is the maximum output current supported by the ADP2166ACPZ-1.0-R7?
The ADP2166ACPZ-1.0-R7 supports up to 6 A continuous output current under typical thermal conditions (θJA = 38.3°C/W on 4-layer JEDEC board). Its 19 mΩ high-side and 15 mΩ low-side MOSFETs, combined with thermal shutdown at 150°C, enable sustained 6 A operation in well-designed layouts. Derating applies above +85°C ambient or with reduced copper area.
Does the ADP2166ACPZ-1.0-R7 support output voltage tracking, and how is it implemented?
Yes, the ADP2166ACPZ-1.0-R7 supports voltage tracking via its dedicated TRK pin. When a resistor divider from a master rail (e.g., FPGA I/O voltage) is connected to TRK, the internal error amplifier regulates FB to the lowest of three inputs-reference, soft-start, or TRK-enabling precise follower behavior. If unused, TRK must be tied to VREG.
What is the purpose of the COMP pin on the ADP2166ACPZ-1.0-R7, and how is it used?
The COMP pin on the ADP2166ACPZ-1.0-R7 is the error amplifier output, used to connect an external RC compensation network between COMP and GND. This network sets loop gain and phase margin, enabling stable operation with diverse output capacitors (e.g., low-ESR ceramics or higher-ESR polymers) and varying load conditions-critical for maintaining transient response and avoiding oscillation.
Can the ADP2166ACPZ-1.0-R7 operate with a precharged output, and what protection does it provide?
Yes, the ADP2166ACPZ-1.0-R7 supports startup into a precharged output. During soft start, it monitors the FB voltage and prevents reverse inductor current that would discharge the output capacitor-ensuring safe ramp-up even when VOUT is already near 1.0 V. This avoids damaging downstream components or causing system reset glitches.
What are the key thermal characteristics of the ADP2166ACPZ-1.0-R7 package?
The ADP2166ACPZ-1.0-R7 uses a 24-lead 4 mm × 4 mm LFCSP with exposed thermal pad. Its θJA is 38.3°C/W on a standard 4-layer JEDEC board, and thermal shutdown activates at 150°C with 25°C hysteresis. Soldering the EPAD to a solid ground plane reduces junction-to-board resistance significantly-essential for maintaining <125°C junction temperature at full 6 A load.
ADP2166ACPZ-1.0-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:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.7V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 1V
- Voltage - Output (Max):
- -
- Current - Output:
- 6A
- Frequency - Switching:
- 250kHz ~ 1.4MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 24-LFCSP (4x4)
ADP2166ACPZ-1.0-R7 FAQ
1.How can I place an order for ADP2166ACPZ-1.0-R7 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADP2166ACPZ-1.0-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 ADP2166ACPZ-1.0-R7 reliable?
The price and inventory of ADP2166ACPZ-1.0-R7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADP2166ACPZ-1.0-R7 is usually 5 days.
3.What payment methods are accepted for ADP2166ACPZ-1.0-R7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADP2166ACPZ-1.0-R7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADP2166ACPZ-1.0-R7?
ADP2166ACPZ-1.0-R7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADP2166ACPZ-1.0-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 ADP2166ACPZ-1.0-R7?
For technical support, including ADP2166ACPZ-1.0-R7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADP2166ACPZ-1.0-R7 requirements.
6.How does Aetrix verify that ADP2166ACPZ-1.0-R7 is sourced from the original manufacturer or authorized distributors?
All ADP2166ACPZ-1.0-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 ADP2166ACPZ-1.0-R7 meets industry standards.
7.What is the process for return or replacement of ADP2166ACPZ-1.0-R7?
All ADP2166ACPZ-1.0-R7 units undergo pre-shipment inspection (PSI). If there is an issue with ADP2166ACPZ-1.0-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 ADP2166ACPZ-1.0-R7 part is unused and in its original packaging.
Return procedure for ADP2166ACPZ-1.0-R7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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