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Analog Devices Inc. ADP2106ACPZ-3.3-R7
- Part No.:
- ADP2106ACPZ-3.3-R7
- Manufacturer:
- Analog Devices Inc.
- Package:
- 16-WQFN Exposed Pad, CSP
- Datasheet:
-
ADP2106ACPZ-3.3-R7.pdf
- Description:
- IC REG BUCK 3.3V 1.5A 16LFCSP
- Quantity:
- Payment:
- Shipping:
Inventory:2,346
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Product details
Overview
ADP2106ACPZ-3.3-R7 from Analog Devices is a 1.5 A synchronous step-down DC-DC converter in a 4 mm × 4 mm LFCSP package, operating from 2.7 V to 5.5 V input and delivering a fixed 3.3 V output with ±1% regulation over load/temperature. 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 space-constrained portable systems.
For engineers reviewing the ADP2106ACPZ-3.3-R7 datasheet, ADP2106ACPZ-3.3-R7 pinout, ADP2106ACPZ-3.3-R7 application, or ADP2106ACPZ-3.3-R7 equivalent, key selection criteria include its 1.5 A continuous output capability, ultralow shutdown current (0.1 µA), smooth PWM-to-PFM transition for battery life optimization, and compatibility with small ceramic output capacitors in compact Li+-powered designs.
Technical Context
The ADP2106ACPZ-3.3-R7 implements a peak-current-mode PWM control architecture at medium-to-heavy loads, ensuring stable regulation and fast transient response. Its 1.2 MHz fixed-frequency operation minimizes external component size while maintaining low noise in sensitive RF sections.
Under light-load conditions, it automatically transitions to pulse-frequency modulation (PFM) mode, reducing switching frequency and quiescent current to 20 µA - critical for extending runtime in always-on subsystems. The device supports 100% duty-cycle operation (LDO mode) for ultra-low dropout during input voltage sag.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 1.5 A continuous - sufficient for powering core logic, I/O rails, or multiple peripherals in handheld devices without thermal derating under typical PCB layout. |
| Output Voltage | Fixed 3.3 V ±1% (3.267–3.333 V) - eliminates external feedback resistors and ensures precise rail generation for 3.3 V microcontrollers and interfaces. |
| Input Range | 2.7 V to 5.5 V - supports single-cell Li+/Li− polymer, multi-cell alkaline/NiMH, and PCMCIA sources without intermediate regulation. |
| Switching Frequency | 1.2 MHz (±167 kHz) - enables use of sub-3 µH inductors and <10 µF ceramic output capacitors, reducing solution footprint by >40% vs. 500 kHz converters. |
| Quiescent Current | 20 µA typical - extends battery life in standby modes; drops to 0.1 µA in shutdown, isolating input from output. |
| Efficiency Peak | 97% at 3.6 VIN/3.3 VOUT/500 mA - achieved via integrated low-RDS(on) switches (100 mΩ P-FET / 90 mΩ N-FET) and synchronous rectification. |
| Thermal Resistance | θJA = 40 °C/W - requires exposed pad soldered to PCB ground plane; enables 1 W max power dissipation with natural convection on 4-layer board. |
Pinout & Package
ADP2106ACPZ-3.3-R7 uses a 16-lead, 4 mm × 4 mm LFCSP package with exposed thermal pad (EP) soldered to PCB ground for optimal heat dissipation. Pin numbering follows top-view standard with Pin 1 at top-left corner.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EN (Pin 1) | Enable logic input | Active-high digital control: drives device ON/OFF; pulls input current to 0.1 µA in shutdown - essential for system-level power sequencing. |
| IN (Pin 14) | Main power input | Supplies internal bias circuitry; must be bypassed with ≥0.1 µF capacitor to AGND and connected to PWIN1 via 10 Ω resistor for EMI filtering. |
| PWIN1/PWIN2 (Pins 9,13) | High-side switch source inputs | Direct connection points for P-channel MOSFET source; each requires ≥4.7 µF ceramic capacitor to PGND for low-impedance input current return. |
| 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 - forms critical high-di/dt path requiring tight layout. |
| PGND (Pin 11) | Power ground return | Low-impedance return for all input/output capacitors; must connect directly to exposed pad and dedicated power ground plane to minimize noise coupling. |
| AGND (Pin 7) | Analog ground reference | Reference for FB, COMP, SS, and internal error amplifier; must tie compensation components and soft-start cap here - separate from PGND except at EP. |
| FB (Pin 16) | Feedback sense input | Internally regulated to 0.8 V reference; for fixed 3.3 V version, directly connected to output - no external divider needed. |
| SS (Pin 6) | Soft-start timing node | Accepts external capacitor (e.g., 1 nF → 1 ms ramp) to limit inrush current and prevent output overshoot during startup. |
| COMP (Pin 5) | Loop compensation node | Output of transconductance error amplifier; requires RC network to AGND to stabilize control loop across full load/temperature range. |
| GND (Pins 2,3,4,15) | Test pins | Internal test-only connections - not functional grounds; must be tied to AGND plane near IC for signal integrity, not used as current return paths. |
| NC (Pin 8) | No-connect terminal | Unbonded die pad - may be left floating or tied to AGND; no electrical function or performance impact. |
Key Features
| Feature | Design Value |
|---|---|
| Ultralow quiescent current | 20 µA operating / 0.1 µA shutdown - enables >1-year battery life in IoT sensors with periodic wake-up cycles. |
| Synchronous rectification | Integrated N-channel rectifier (90 mΩ) eliminates external Schottky diode - reduces BOM count and improves efficiency by 5–8% at 1 A. |
| 100% duty cycle (LDO) mode | Supports dropout operation down to VOUT − 100 mV - maintains regulation during brown-out events in battery-powered systems. |
| Programmable soft start | Capacitor-controlled ramp (750–1200 µs) - prevents inrush into large output capacitance and avoids false resets in downstream logic. |
| Undervoltage lockout (UVLO) | 2.4 V turn-on threshold with 200 mV hysteresis - protects battery from deep discharge and ensures clean power-up sequencing. |
| ADIsimPower™ support | Fully modeled in Analog Devices' web-based design tool - enables rapid selection of inductor, input/output caps, and compensation network. |
Applications
| Mobile Handsets | PDAs and Palmtop Computers |
|---|---|
|
Use Scenario: Powering application processor I/O supply and baseband modem core rails in dual-battery or single-Li+ architectures. IC Role / Device Role / Timing Role: Primary 3.3 V buck regulator delivering 1.5 A with dynamic load step response <10 µs. Use Value: 97% peak efficiency and 20 µA quiescent current extend talk time by up to 18% versus legacy 500 kHz converters. |
Use Scenario: Generating stable 3.3 V rail for LCD controller, touch controller, and SD card interface in compact form-factor PDAs. IC Role / Device Role / Timing Role: Fixed-output DC-DC converter with integrated soft-start and UVLO for reliable cold-start from depleted alkaline cells. Use Value: 4 mm × 4 mm LFCSP package and ceramic-capacitor compatibility reduce total solution area by 35% vs. QFN alternatives. |
| Telecom Equipment | Audio/Video Consumer Electronics |
|
Use Scenario: Supplying 3.3 V to Ethernet PHYs, USB transceivers, and PoE interface controllers in compact access points and VoIP phones. IC Role / Device Role / Timing Role: High-efficiency point-of-load regulator handling 0.5–1.2 A dynamic loads with minimal thermal rise on dense PCBs. Use Value: 40 °C/W θJA and exposed-pad thermal design enable full 1.5 A output without heatsink in 70°C ambient environments. |
Use Scenario: Powering HDMI transmitter, audio codec, and display driver ICs in portable media players and Bluetooth speakers. IC Role / Device Role / Timing Role: Low-noise 3.3 V supply with PFM/PWM auto-transition to maintain efficiency across playback (10 mA) and decode (1.2 A) states. Use Value: 1.2 MHz switching frequency places fundamental noise beyond audio band (20 kHz), eliminating audible coil whine. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS62231DRYR | 1.5 A, 3.3 V fixed, 2.05–6.0 V input, 3.6 MHz switching, 17 µA IQ | Higher frequency enables smaller inductors but increases EMI sensitivity; lacks LDO-mode dropout support | Preferred for ultra-compact layouts where EMI filtering is feasible and dropout margin is >300 mV |
| RT8059NGSP | 1.5 A, 3.3 V fixed, 2.5–5.5 V input, 1.5 MHz, 25 µA IQ, no PFM mode | Fixed PWM only - higher light-load IQ; no programmable soft-start; different pinout (exposed pad not grounded) | Selected when strict constant-frequency operation is required and soft-start timing is managed externally |
Compared with TPS62231DRYR and RT8059NGSP, ADP2106ACPZ-3.3-R7 offers superior light-load efficiency via PFM mode, true 100% duty-cycle operation for battery-sag resilience, and industry-standard LFCSP thermal design - making it optimal for long-runtime, wide-input portable systems.
Availability
ADP2106ACPZ-3.3-R7 is available at Aetrix Electronics and suitable for mobile handsets, telecom equipment, and audio/video consumer electronics requiring stable component supply, consistent parametric performance, and long-term production continuity.
Supply support for ADP2106ACPZ-3.3-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 instrumentation, industrial automation, communications, and automotive markets.
The ADP2106ACPZ-3.3-R7 belongs to Analog Devices' ADP210x family of high-efficiency, low-quiescent-current buck converters designed specifically for battery-powered portable electronics demanding extended runtime and minimal PCB area.
FAQ
What is the maximum continuous output current of the ADP2106ACPZ-3.3-R7?
The ADP2106ACPZ-3.3-R7 delivers 1.5 A continuous output current under typical thermal conditions (θJA = 40 °C/W, 4-layer PCB with exposed pad soldered). This rating is validated across −40°C to +125°C junction temperature and accounts for internal P-FET and N-FET RDS(on) limits, current-sense amplifier gain (2.8125 A/V), and thermal shutdown threshold (140°C).
Does the ADP2106ACPZ-3.3-R7 require external feedback resistors?
No. The ADP2106ACPZ-3.3-R7 is a fixed 3.3 V output variant - its internal feedback divider is factory-trimmed to regulate precisely to 3.3 V (±1%). Pin 16 (FB) connects directly to the output node; no external resistors are needed, simplifying layout and improving accuracy over temperature.
How does the ADP2106ACPZ-3.3-R7 manage efficiency at light loads?
The ADP2106ACPZ-3.3-R7 automatically transitions from fixed-frequency PWM mode to variable-frequency PFM mode below ~15–30 mA (depending on input voltage and output), reducing switching losses and lowering quiescent current to 20 µA. This preserves battery energy in standby or sleep states without requiring external mode-control signals.
What is the purpose of the PWIN1 and PWIN2 pins on the ADP2106ACPZ-3.3-R7?
PWIN1 and PWIN2 are dedicated source connections for the integrated P-channel high-side switch. Each must be bypassed with ≥4.7 µF ceramic capacitors to PGND to provide low-impedance return paths for high di/dt switching currents - critical for minimizing voltage spikes, EMI, and efficiency loss at the switch node.
Can the ADP2106ACPZ-3.3-R7 operate with input voltage equal to output voltage?
Yes. The ADP2106ACPZ-3.3-R7 supports 100% duty-cycle operation (LDO mode), allowing it to maintain regulated 3.3 V output even when input voltage sags to as low as 3.4 V (accounting for internal drop). This feature prevents system reset during battery voltage droop in portable applications.
ADP2106ACPZ-3.3-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):
- 3.3V
- 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-3.3-R7 FAQ
1.How can I place an order for ADP2106ACPZ-3.3-R7 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADP2106ACPZ-3.3-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-3.3-R7 reliable?
The price and inventory of ADP2106ACPZ-3.3-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-3.3-R7 is usually 5 days.
3.What payment methods are accepted for ADP2106ACPZ-3.3-R7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADP2106ACPZ-3.3-R7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADP2106ACPZ-3.3-R7?
ADP2106ACPZ-3.3-R7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADP2106ACPZ-3.3-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-3.3-R7?
For technical support, including ADP2106ACPZ-3.3-R7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADP2106ACPZ-3.3-R7 requirements.
6.How does Aetrix verify that ADP2106ACPZ-3.3-R7 is sourced from the original manufacturer or authorized distributors?
All ADP2106ACPZ-3.3-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-3.3-R7 meets industry standards.
7.What is the process for return or replacement of ADP2106ACPZ-3.3-R7?
All ADP2106ACPZ-3.3-R7 units undergo pre-shipment inspection (PSI). If there is an issue with ADP2106ACPZ-3.3-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-3.3-R7 part is unused and in its original packaging.
Return procedure for ADP2106ACPZ-3.3-R7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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