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Analog Devices Inc. ADP2106ACPZ-1.8-R7
- Part No.:
- ADP2106ACPZ-1.8-R7
- Manufacturer:
- Analog Devices Inc.
- Package:
- 16-WQFN Exposed Pad, CSP
- Datasheet:
-
ADP2106ACPZ-1.8-R7.pdf
- Description:
- IC REG BUCK 1.8V 1.5A 16LFCSP
- Quantity:
- Payment:
- Shipping:
Inventory:1,673
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Product details
Overview
ADP2106ACPZ-1.8-R7 from Analog Devices is a 1.5 A synchronous step-down DC-to-DC converter in a 4 mm × 4 mm LFCSP package, operating from 2.7 V to 5.5 V input and delivering a fixed 1.8 V output with ±1% accuracy over temperature and load. It features 1.2 MHz switching frequency, 20 µA quiescent current, and integrated P-channel high-side switch (100 mΩ typical) and N-channel synchronous rectifier (90 mΩ typical), enabling high-efficiency power conversion in portable battery-powered systems.
For engineers reviewing the ADP2106ACPZ-1.8-R7 datasheet, ADP2106ACPZ-1.8-R7 pinout, ADP2106ACPZ-1.8-R7 application, or ADP2106ACPZ-1.8-R7 equivalent, key selection considerations include its 1.5 A continuous output capability, ultralow shutdown current (0.1 µA), smooth PWM-to-PFM transition for light-load efficiency, and compatibility with small ceramic output capacitors in space-constrained designs.
Technical Context
The ADP2106ACPZ-1.8-R7 employs a peak-current-mode PWM control architecture at medium-to-heavy loads, with automatic transition to pulse-frequency modulation (PFM) under light load to maintain high efficiency. Its internal 0.8 V feedback reference enables precise regulation of the fixed 1.8 V output across input voltage (2.7–5.5 V) and temperature (−40°C to +125°C) ranges.
It integrates dual power switches - a P-channel high-side MOSFET and N-channel synchronous rectifier - with on-resistance values of 100 mΩ and 90 mΩ respectively at TA = 25°C, supporting 100% duty-cycle operation in dropout mode. Soft start (750–1200 µs with 1 nF capacitor) and undervoltage lockout (2.2–2.6 V rising threshold) ensure robust startup and battery protection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 1.5 A continuous - supports mid-power digital ICs like microcontrollers and FPGAs without external thermal derating. |
| Input Voltage Range | 2.7 V to 5.5 V - compatible with single Li+/Li-polymer cells and multi-cell alkaline/NiMH batteries. |
| Output Voltage | Fixed 1.8 V ±1% - meets core voltage requirements for low-voltage logic, memory, and interface ICs. |
| Switching Frequency | 1.2 MHz typical - enables use of compact 2.2 µH–3.3 µH inductors and reduces EMI filtering burden. |
| Quiescent Current | 20 µA - extends battery life in always-on or standby modes of portable electronics. |
| Shutdown Current | 0.1 µA - ensures negligible drain during system sleep or off-state. |
| Efficiency Peak | 97% - achieved at medium load (e.g., 500 mA @ VIN = 3.6 V, VOUT = 1.8 V), minimizing thermal stress. |
Pinout & Package
ADP2106ACPZ-1.8-R7 uses a 16-lead, 4 mm × 4 mm LFCSP package with exposed thermal pad soldered to PCB ground plane. Pin functions are validated per Analog Devices Rev. E datasheet Figure 4 and Table 4.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EN (Pin 1) | Enable logic input | Active-high control: drives device ON/OFF; <0.4 V disables, >2 V enables; draws only 0.1 µA in shutdown. |
| IN (Pin 14) | Main power input | Supplies internal bias circuitry; bypassed with ≥0.1 µF capacitor to AGND near IC. |
| PWIN1/PWIN2 (Pins 9,13) | High-side switch source inputs | Connect to input rail via 10 Ω resistor; each requires ≥4.7 µF ceramic capacitor to PGND for low-impedance PFET gate drive. |
| LX1/LX2 (Pins 10,12) | Switch node outputs | Drain terminals of integrated P-FET and N-FET; must be tied together and connected to LC filter inductor. |
| PGND (Pin 11) | Power ground return | Low-impedance path for input/output capacitor currents; connects directly to exposed pad. |
| AGND (Pin 7) | Analog ground reference | Reference for FB, COMP, SS; must be star-connected to exposed pad and compensation components. |
| FB (Pin 16) | Feedback sense | Internally regulated to 0.8 V; for fixed 1.8 V version, directly connected to output; sets output via internal resistor divider. |
| SS (Pin 6) | Soft start timing | Capacitor from SS to AGND (e.g., 1 nF) programs soft-start duration (750–1200 µs) to limit inrush current. |
Key Features
| Feature | Design Value |
|---|---|
| Synchronous rectification | Integrated N-channel MOSFET (90 mΩ) eliminates external diode, improving efficiency by ~5–10% vs. asynchronous designs. |
| PWM/PFM hybrid control | Seamless transition between constant-frequency PWM (for stability) and variable-frequency PFM (for <20 µA IQ) preserves efficiency across 10 µA–1.5 A load range. |
| 100% duty cycle operation | Enables LDO-like behavior when VIN approaches VOUT (e.g., 2.0 V input → 1.8 V output), maintaining regulation without dropout. |
| Thermal shutdown | Activates at 140°C junction temperature with 40°C hysteresis, protecting against sustained overload or poor PCB heatsinking. |
| Undervoltage lockout (UVLO) | Prevents operation below 2.2 V (rising) to avoid brownout instability and deep battery discharge in Li+ systems. |
Applications
| Mobile Handsets | PDAs and Palmtop Computers |
|---|---|
Use Scenario: Powering application processors and memory subsystems in slim, battery-operated handheld devices. IC Role / Device Role / Timing Role: Primary 1.8 V core supply regulator delivering stable voltage during dynamic CPU load transitions. Use Value: 97% peak efficiency and 20 µA quiescent current extend talk time and standby duration without requiring large heat sinks. |
Use Scenario: Supplying logic rails for touch controllers, display drivers, and low-power microcontrollers in legacy portable computing platforms. IC Role / Device Role / Timing Role: Fixed-output buck converter providing clean, regulated 1.8 V to mixed-signal SoCs with minimal external components. Use Value: Small 4 mm × 4 mm LFCSP footprint and compatibility with 10 µF ceramic output capacitors reduce total solution size by >30% vs. older solutions. |
| Telecom Equipment | Audio/Video Consumer Electronics |
Use Scenario: Generating point-of-load 1.8 V supplies for Ethernet PHYs, USB transceivers, and baseband modems in compact networking modules. IC Role / Device Role / Timing Role: High-frequency (1.2 MHz) DC-DC stage enabling compact LC filters and reducing conducted EMI in dense board layouts. Use Value: Low 100 mΩ P-FET RDS(on) minimizes conduction loss at 1.5 A, supporting reliable operation under full-load thermal conditions. |
Use Scenario: Powering HDMI interface ICs, audio codecs, and sensor hubs in smart speakers, streaming sticks, and portable media players. IC Role / Device Role / Timing Role: Efficient, low-noise voltage source for noise-sensitive analog and digital blocks sharing a common 3.3 V or 5 V input rail. Use Value: Integrated soft start (programmable via SS pin) prevents output overshoot and inrush current spikes that could disrupt adjacent audio circuitry. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down DC-DC converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS62260DRVR | 1.2 MHz, 1.2 A, 1.8 V fixed; 17 µA IQ; 2.05–6.5 V input; 6-pin WSON package | Lower current rating (1.2 A vs. 1.5 A); smaller package but no PWIN pins - less optimal for high-current transient response | Select when board space is critical and load never exceeds 1.2 A; verify thermal performance under sustained 1.2 A. |
| RT8059NGQW | 1.5 MHz, 1.5 A, 1.8 V fixed; 30 µA IQ; 2.5–5.5 V input; 16-pin QFN with exposed pad | Higher quiescent current (30 µA vs. 20 µA); same current rating but lower efficiency at light loads due to higher IQ | Choose if 1.5 MHz switching is required for EMI tuning; confirm FB accuracy (±2%) is acceptable for target application. |
Compared with TPS62260DRVR and RT8059NGQW, ADP2106ACPZ-1.8-R7 offers superior light-load efficiency (20 µA IQ), tighter output accuracy (±1% vs. ±2%), and dedicated PWIN pins for optimized gate drive - making it preferred for battery-critical, thermally constrained, or precision-regulation applications.
Availability
ADP2106ACPZ-1.8-R7 is available at Aetrix Electronics and suitable for mobile handsets, telecom modules, and portable audio/video consumer electronics requiring stable component supply, long-term manufacturability, and guaranteed parametric compliance.
Supply support for ADP2106ACPZ-1.8-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 ADP2106ACPZ-1.8-R7 belongs to the ADP210x family of high-efficiency, low-quiescent-current synchronous buck converters designed specifically for battery-powered portable electronics where size, efficiency, and thermal performance are critical.
FAQ
What is the maximum continuous output current of the ADP2106ACPZ-1.8-R7?
The ADP2106ACPZ-1.8-R7 delivers up to 1.5 A continuous output current under typical thermal conditions (θJA = 40°C/W, 4-layer board with exposed pad soldered). Derating applies above +85°C ambient or with insufficient PCB copper area; full 1.5 A is supported at TJ ≤ +125°C with proper layout.
Does the ADP2106ACPZ-1.8-R7 require external compensation components?
No - the ADP2106ACPZ-1.8-R7 is internally compensated for its fixed 1.8 V output configuration. External compensation (via COMP pin) is only required for adjustable versions (ADJ suffix); the -1.8-R7 variant operates stably with only input/output capacitors and an inductor.
Can the ADP2106ACPZ-1.8-R7 operate with a 2.5 V input voltage?
Yes - the ADP2106ACPZ-1.8-R7 supports input voltages from 2.7 V to 5.5 V. At 2.5 V input, it falls below the minimum operating voltage (2.7 V), so operation is not guaranteed; UVLO will hold the device in shutdown until VIN rises above ~2.2 V (falling threshold) or ~2.4 V (rising threshold).
How does the soft start function work on the ADP2106ACPZ-1.8-R7?
The ADP2106ACPZ-1.8-R7 implements soft start via an external capacitor on the SS pin (Pin 6). A 1 nF capacitor yields a 750–1200 µs ramp-up time, linearly increasing the output voltage to prevent inrush current and output overshoot during power-up. No resistor is required - the internal current source charges the capacitor.
Is the ADP2106ACPZ-1.8-R7 RoHS compliant and lead-free?
Yes - the ADP2106ACPZ-1.8-R7 is RoHS compliant and lead-free, packaged in a Pb-free 16-lead LFCSP (CP-16-3) with nickel-palladium-gold (NiPdAu) terminal finish, meeting JEDEC J-STD-020 reflow standards and Analog Devices' environmental specifications.
ADP2106ACPZ-1.8-R7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 16-WQFN Exposed Pad, CSP
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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):
- 1.8V
- Voltage - Output (Max):
- -
- Current - Output:
- 1.5A
- Frequency - Switching:
- 1.2MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-LFCSP (4x4)
ADP2106ACPZ-1.8-R7 FAQ
1.How can I place an order for ADP2106ACPZ-1.8-R7 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADP2106ACPZ-1.8-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 ADP2106ACPZ-1.8-R7 reliable?
The price and inventory of ADP2106ACPZ-1.8-R7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADP2106ACPZ-1.8-R7 is usually 5 days.
3.What payment methods are accepted for ADP2106ACPZ-1.8-R7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADP2106ACPZ-1.8-R7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADP2106ACPZ-1.8-R7?
ADP2106ACPZ-1.8-R7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADP2106ACPZ-1.8-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 ADP2106ACPZ-1.8-R7?
For technical support, including ADP2106ACPZ-1.8-R7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADP2106ACPZ-1.8-R7 requirements.
6.How does Aetrix verify that ADP2106ACPZ-1.8-R7 is sourced from the original manufacturer or authorized distributors?
All ADP2106ACPZ-1.8-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 ADP2106ACPZ-1.8-R7 meets industry standards.
7.What is the process for return or replacement of ADP2106ACPZ-1.8-R7?
All ADP2106ACPZ-1.8-R7 units undergo pre-shipment inspection (PSI). If there is an issue with ADP2106ACPZ-1.8-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 ADP2106ACPZ-1.8-R7 part is unused and in its original packaging.
Return procedure for ADP2106ACPZ-1.8-R7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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