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Analog Devices Inc. ADP2106ACPZ-1.5-R7
- Part No.:
- ADP2106ACPZ-1.5-R7
- Manufacturer:
- Analog Devices Inc.
- Package:
- 16-WQFN Exposed Pad, CSP
- Datasheet:
-
ADP2106ACPZ-1.5-R7.pdf
- Description:
- IC REG BUCK SYNC 1.5V 16LFCSP
- Quantity:
- Payment:
- Shipping:
Inventory:3,424
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Product details
Overview
ADP2106ACPZ-1.5-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 1.5 V output with ±3% regulation over temperature and load. It features 1.2 MHz switching frequency, 97% peak efficiency, 20 µA quiescent current, and integrated P-channel high-side switch (100 mΩ typical) and N-channel synchronous rectifier (90 mΩ typical), optimized for portable power rails in mobile handsets and PDAs.
For engineers reviewing the ADP2106ACPZ-1.5-R7 datasheet, ADP2106ACPZ-1.5-R7 pinout, ADP2106ACPZ-1.5-R7 application, or ADP2106ACPZ-1.5-R7 equivalent, key selection criteria include its 1.5 A continuous output capability, 100% duty cycle LDO-mode operation for ultra-low dropout, programmable soft start (750–1200 µs), and compatibility with small ceramic output capacitors - all critical for battery-powered systems requiring high light-load efficiency and fast transient response.
Technical Context
The ADP2106ACPZ-1.5-R7 employs a peak-current-mode PWM control architecture at medium-to-heavy loads, with automatic transition to pulse-frequency modulation (PFM) under light loads to maintain ultralow quiescent current (20 µA typ). Its 1.2 MHz fixed switching frequency enables compact external components, while slope compensation ensures stability across input and output voltage ranges.
It integrates a P-channel high-side switch and N-channel synchronous rectifier, eliminating external diode losses. The device supports 100% duty cycle operation for LDO-like behavior near VIN, includes undervoltage lockout (2.2–2.6 V hysteresis), thermal shutdown (140°C), and uses an internal 0.8 V reference for feedback regulation - all implemented within a single 16-lead LFCSP with exposed thermal pad.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 1.5 A continuous - supports core logic rails for ARM-based processors and baseband ICs without derating at 25°C. |
| Input Voltage Range | 2.7 V to 5.5 V - compatible with single Li+/Li− polymer cells, dual alkaline/NiMH, and PCMCIA supplies. |
| Output Voltage | Fixed 1.5 V ±3% (−40°C to +125°C) - eliminates external resistor divider, reduces BOM count and layout sensitivity. |
| Switching Frequency | 1.2 MHz (±167 kHz) - enables use of sub-3 µH inductors and <10 µF ceramic output capacitors for space-constrained designs. |
| Quiescent Current | 20 µA typical - extends battery life in always-on subsystems such as real-time clocks or sensor interfaces. |
| Efficiency Peak | 97% at 3.6 VIN/1.5 VOUT/500 mA - minimizes thermal rise in sealed enclosures and improves system-level power budget margin. |
| Shutdown Current | 0.1 µA max - ensures negligible battery drain during deep sleep or standby modes. |
Pinout & Package
ADP2106ACPZ-1.5-R7 uses a 16-lead 4 mm × 4 mm LFCSP package with exposed thermal pad (EP), requiring soldering to PCB ground plane for thermal dissipation and optimal EMI performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EN (Pin 1) | Enable logic input | Active-high TTL/CMOS-compatible control; pulls device into <0.1 µA shutdown state when low. |
| IN (Pin 14) | Main power input | Supplies internal bias circuitry; must be 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 local ceramic bypass to PGND. |
| 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. |
| PGND (Pin 11) | Power ground return | Low-impedance return path for input/output capacitors; 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 network. |
| FB (Pin 16) | Feedback input | Internally referenced to 0.8 V; shorted to output for fixed 1.5 V version - no external divider needed. |
| SS (Pin 6) | Soft start timing node | Accepts 1 nF capacitor to AGND for 1 ms startup ramp; prevents inrush current into downstream capacitance. |
| COMP (Pin 5) | Error amplifier output | Requires RC network to AGND for loop compensation; sets phase margin and transient response. |
| GND (Pins 2,3,4,15) | Test pins | Not functional grounds; must be tied to AGND plane near IC per datasheet layout guidance. |
| NC (Pin 8) | No connect | Unbonded; may be left floating or tied to AGND - no electrical function. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated synchronous rectification | Eliminates external Schottky diode, reducing conduction loss by >30% vs. asynchronous designs at 1 A load. |
| 100% duty cycle LDO mode | Maintains regulation down to VOUT = VIN − 100 mV, enabling seamless operation during battery voltage sag. |
| PFM-to-PWM auto-transition | Smoothly shifts control mode at ~15–200 mA (load-dependent), preserving >85% efficiency from 100 µA to full load. |
| Programmable soft start | Configurable 750–1200 µs ramp via external SS capacitor - prevents overshoot and limits inrush into 100+ µF output banks. |
| Thermal shutdown with hysteresis | Triggers at 140°C junction temp and holds off until 100°C - protects against sustained overload or poor airflow. |
Applications
| Mobile Handset Core Rail | PDA Processor Supply |
|---|---|
|
Use Scenario: Powers ARM Cortex-A series application processor cores requiring stable 1.5 V at up to 1.5 A with fast load transient response. IC Role / Device Role / Timing Role: Primary buck regulator delivering main SoC VDD_CORE with 1.2 MHz switching synchronized to system clock domain. Use Value: 97% peak efficiency and 20 µA quiescent current extend talk time by >12% versus legacy 3 MHz converters in 3G/4G modems. |
Use Scenario: Supplies 1.5 V to OMAP or i.MX application processors in handheld PDAs with dynamic voltage scaling. IC Role / Device Role / Timing Role: Adaptive voltage regulator responding to DVFS commands via EN pin toggling and soft-start reinitialization. Use Value: 100% duty cycle operation maintains regulation during brownout events (e.g., 2.8 V battery), preventing unexpected resets. |
| Telecom Baseband IC Power | Audio Codec Bias Rail |
|
Use Scenario: Provides clean 1.5 V supply to LTE/Wi-Fi baseband ICs in small-form-factor access points and femtocells. IC Role / Device Role / Timing Role: Secondary regulated rail decoupled from main 3.3 V system bus, minimizing noise coupling into RF sections. Use Value: Integrated synchronous FETs and 1.2 MHz switching reduce output ripple to <5 mVpp, meeting ADC reference noise specs. |
Use Scenario: Generates low-noise 1.5 V bias for high-fidelity audio codecs in portable speakers and Bluetooth headsets. IC Role / Device Role / Timing Role: Low-quiescent-current buck stage preceding LDO post-regulator, optimizing total power delivery efficiency. Use Value: 20 µA IQ enables >200-hour standby on coin-cell backup, while PFM mode preserves SNR during silent intervals. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS62231DRVR | 1.5 A, 2.05–6.0 VIN, fixed 1.5 V, 3.5 MHz switching, 17 µA IQ, WSON-6 package (2.0 × 2.0 mm) | Higher frequency enables smaller inductors but increases EMI filtering complexity; lacks LDO-mode operation. | Preferred for ultra-compact layouts where board area is constrained more than thermal budget. |
| RT8059NGQW | 1.5 A, 2.5–5.5 VIN, fixed 1.5 V, 1.5 MHz, 25 µA IQ, QFN-10 (3 × 3 mm), no PFM mode | Uses forced PWM only - higher light-load IQ (25 µA vs. 20 µA) and no automatic mode transition. | Suitable when deterministic switching frequency is required for EMI compliance, and light-load efficiency is secondary. |
Compared with TPS62231DRVR and RT8059NGQW, ADP2106ACPZ-1.5-R7 offers superior thermal performance (40°C/W θJA vs. >60°C/W), true 100% duty cycle operation for battery-sag resilience, and smoother PFM/PWM boundary handling - making it optimal for thermally isolated, battery-critical portable designs.
Availability
ADP2106ACPZ-1.5-R7 is available at Aetrix Electronics and suitable for mobile handset core rails, PDA processor supplies, and telecom baseband IC power requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.
Supply support for ADP2106ACPZ-1.5-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, with design centers worldwide and ISO 9001-certified manufacturing.
The ADP210x family was designed specifically for space- and power-constrained portable electronics, emphasizing ultralow quiescent current, high efficiency across load range, and minimal external component count - targeting battery-powered communication and computing devices.
FAQ
What is the maximum continuous output current of the ADP2106ACPZ-1.5-R7?
The ADP2106ACPZ-1.5-R7 delivers 1.5 A continuous output current at 25°C ambient with proper PCB thermal design (4-layer board, exposed pad soldered). Derating applies above 85°C junction temperature; full 1.5 A is maintained up to 100°C case temperature with ≥2 cm² copper pour under the exposed pad.
Does the ADP2106ACPZ-1.5-R7 require external feedback resistors?
No. The ADP2106ACPZ-1.5-R7 is a fixed-output variant with internal resistor divider set to 1.5 V. Pin 16 (FB) is internally connected to the output; no external resistors are needed, simplifying layout and improving regulation accuracy versus adjustable counterparts.
How does the ADP2106ACPZ-1.5-R7 handle input voltage dropout conditions?
The ADP2106ACPZ-1.5-R7 supports 100% duty cycle operation, allowing it to maintain regulation as input voltage approaches the output level (e.g., 1.55 VIN → 1.5 VOUT). This LDO-mode behavior prevents system reset during battery voltage sag, unlike buck converters limited to ~90% duty cycle.
What is the recommended soft start capacitor value for the ADP2106ACPZ-1.5-R7?
A 1 nF capacitor from SS (Pin 6) to AGND yields a nominal 1000 µs soft start period, as specified in the datasheet. Values between 0.75 nF and 1.2 nF produce 750–1200 µs ramps - sufficient to limit inrush into typical 22–100 µF output capacitor banks without compromising startup speed.
Can the ADP2106ACPZ-1.5-R7 operate from a single-cell Li+ battery?
Yes. With a 2.7 V to 5.5 V input range and 100% duty cycle capability, the ADP2106ACPZ-1.5-R7 operates across the full discharge curve of a single Li+/Li− polymer cell (4.2 V fresh to 2.7 V depleted), maintaining regulated 1.5 V output without interruption.
ADP2106ACPZ-1.5-R7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- *
- Package/Case:
- 16-WQFN Exposed Pad, CSP
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Function:
- -
- Output Configuration:
- -
- Topology:
- -
- Output Type:
- -
- Number of Outputs:
- -
- Voltage - Input (Min):
- -
- Voltage - Input (Max):
- -
- Voltage - Output (Min/Fixed):
- -
- Voltage - Output (Max):
- -
- Current - Output:
- -
- Frequency - Switching:
- -
- Synchronous Rectifier:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-LFCSP (4x4)
ADP2106ACPZ-1.5-R7 FAQ
1.How can I place an order for ADP2106ACPZ-1.5-R7 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADP2106ACPZ-1.5-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-1.5-R7 reliable?
The price and inventory of ADP2106ACPZ-1.5-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-1.5-R7 is usually 5 days.
3.What payment methods are accepted for ADP2106ACPZ-1.5-R7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADP2106ACPZ-1.5-R7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADP2106ACPZ-1.5-R7?
ADP2106ACPZ-1.5-R7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADP2106ACPZ-1.5-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-1.5-R7?
For technical support, including ADP2106ACPZ-1.5-R7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADP2106ACPZ-1.5-R7 requirements.
6.How does Aetrix verify that ADP2106ACPZ-1.5-R7 is sourced from the original manufacturer or authorized distributors?
All ADP2106ACPZ-1.5-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-1.5-R7 meets industry standards.
7.What is the process for return or replacement of ADP2106ACPZ-1.5-R7?
All ADP2106ACPZ-1.5-R7 units undergo pre-shipment inspection (PSI). If there is an issue with ADP2106ACPZ-1.5-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-1.5-R7 part is unused and in its original packaging.
Return procedure for ADP2106ACPZ-1.5-R7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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