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Analog Devices Inc. ADP2108AUJZ-3.0-R7
- Part No.:
- ADP2108AUJZ-3.0-R7
- Manufacturer:
- Analog Devices Inc.
- Package:
- SOT-23-5 Thin, TSOT-23-5
- Datasheet:
-
ADP2108AUJZ-3.0-R7.pdf
- Description:
- IC REG BUCK 3V 600MA TSOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:5,957
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Product details
Overview
ADP2108AUJZ-3.0-R7 from Analog Devices is a fixed-output 3.0 V, 600 mA synchronous step-down DC-DC converter with 3 MHz switching frequency, 2.3 V to 5.5 V input range, and 95% peak efficiency. It integrates PFET/NFET power switches, internal compensation, soft start, and thermal/overcurrent protection - deployed in portable media players for core voltage regulation of low-power SoCs.
For engineers reviewing the ADP2108AUJZ-3.0-R7 datasheet, ADP2108AUJZ-3.0-R7 pinout, ADP2108AUJZ-3.0-R7 application, or ADP2108AUJZ-3.0-R7 equivalent, key selection criteria include its 3.0 V fixed output, WLCSP-5 package footprint, 18 μA quiescent current, 100% duty-cycle dropout mode, and compatibility with 1 μH inductors and 4.7–10 μF ceramic capacitors in space-constrained battery-powered systems.
Technical Context
The ADP2108AUJZ-3.0-R7 employs a high-speed current-mode PWM control architecture operating at a fixed 3 MHz frequency for fast line/load transient response. Its dual-mode operation-PWM at medium-to-heavy loads and hysteretic power-save mode below 80 mA-enables high efficiency across full load range while minimizing light-load quiescent draw.
It integrates undervoltage lockout (2.15 V threshold), thermal shutdown (150°C with 20°C hysteresis), and short-circuit protection via frequency foldback. The device supports 100% duty-cycle operation for low-dropout regulation and uses internal soft start to limit inrush current during EN assertion.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.0 V ±2% - eliminates external feedback resistor network; ensures stable core supply for 3.0 V logic rails. |
| Max Output Current | 600 mA across full 2.3–5.5 V input range - sufficient for powering ARM Cortex-M microcontrollers or baseband ICs in handheld devices. |
| Switching Frequency | 3.0 MHz (±0.5 MHz) - enables use of sub-2 mm × 1.25 mm 1 μH inductors and reduces output capacitor size requirements. |
| Quiescent Current | 18 μA typical in active mode - extends battery runtime in always-on subsystems like real-time clocks or sensor interfaces. |
| Shutdown Current | 0.2 μA max - critical for zero-power standby states in GPS navigation units and digital audio players. |
| Input Voltage Range | 2.3 V to 5.5 V - supports single-cell Li+/Li-polymer, multi-cell alkaline/NiMH, USB 5 V, and PCMCIA sources without pre-regulation. |
| Efficiency Peak | 95% at 200 mA - minimizes thermal rise in sealed enclosures and preserves battery energy in portable media applications. |
Pinout & Package
ADP2108AUJZ-3.0-R7 is packaged in a 5-ball Wafer-Level Chip Scale Package (WLCSP) with 0.4 mm pitch and 1.0 mm × 1.0 mm footprint. This ultra-compact, bottom-terminal package enables direct integration beneath processors in thin-profile mobile designs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN (Ball A1) | Power Input | Connects to 2.3–5.5 V source; requires ≥2.2 μF ceramic bypass capacitor placed adjacent to minimize high-frequency input ripple. |
| GND (Ball A2) | Ground Reference | Common return path for input/output capacitors and IC substrate; must be low-impedance plane for EMI control and stability. |
| SW (Ball B) | Switch Node | Drain connection of integrated PFET and NFET; drives external inductor; sensitive to layout parasitics affecting efficiency and noise. |
| EN (Ball C1) | Enable Control | Logic-level input (1.2 V high threshold); asserts soft start on rising edge; pulls input current to ≤0.2 μA when low. |
| FB (Ball C2) | Feedback Input | Internally connected to 3.0 V reference; not externally accessible - confirms fixed-output configuration and eliminates resistor divider errors. |
Key Features
| Feature | Design Value |
|---|---|
| Synchronous rectification | Integrated PFET (320 mΩ) + NFET (300 mΩ) switches eliminate external Schottky diode, reducing conduction loss and board area. |
| Internal compensation | Eliminates need for external compensation network - simplifies design, improves production yield, and guarantees stability with recommended 1 μH/10 μF output filter. |
| Power save mode | Automatically engages below 80 mA load; reduces switching frequency and idle time to maintain >85% efficiency at 10 mA - ideal for sleep-state power domains. |
| 100% duty-cycle operation | Enables dropout <100 mV at 600 mA when VIN approaches VOUT - sustains regulation during brown-out conditions in battery-powered systems. |
| Thermal & fault protection | Includes thermal shutdown (150°C), UVLO (2.15 V), current limiting (1.1–1.5 A PFET peak), and short-circuit frequency foldback - ensures robust field operation without external supervision. |
Applications
| Wireless Handsets | Digital Audio Players |
|---|---|
Use Scenario: Powering RF transceiver bias rails and baseband processor I/O domains during call setup and data transmission. IC Role / Device Role / Timing Role: Primary 3.0 V point-of-load regulator delivering clean, low-noise supply with fast transient response to handle burst-mode current demands. Use Value: Maintains RF signal integrity by limiting output voltage deviation to ±15 mV under 100 mA–600 mA load steps, preventing TX/RX desense. |
Use Scenario: Supplying DSP core and audio codec in portable MP3/WMA players powered by single Li-ion cell. IC Role / Device Role / Timing Role: Fixed 3.0 V buck converter enabling direct battery-to-core conversion without intermediate LDO stages. Use Value: Achieves 92% efficiency at 300 mA, extending playback time by >18 minutes per charge versus legacy 2.5 MHz converters. |
| Digital Cameras | GPS Navigation Units |
Use Scenario: Providing regulated 3.0 V supply to image sensor interface and flash memory controller during photo capture and storage write cycles. IC Role / Device Role / Timing Role: High-efficiency step-down regulator supporting pulsed 500 mA loads with <550 µs startup time after EN assertion. Use Value: Prevents image corruption by maintaining VOUT within ±2% during 0→500 mA load transients, verified per Figure 20 in datasheet. |
Use Scenario: Powering GPS baseband ASIC and RF front-end in automotive-grade portable navigation devices operating across −40°C to +85°C ambient. IC Role / Device Role / Timing Role: Robust 3.0 V supply with integrated thermal shutdown and UVLO, qualified for extended temperature operation. Use Value: Guarantees continuous positioning lock during cold cranking (VIN dip to 2.3 V) via 100% duty-cycle mode and fast recovery from thermal events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS62231DRYR | 3.0 V fixed output, 600 mA, 3.6 MHz, 2.05–6.0 V input, 22 μA IQ - slightly higher quiescent current and wider input range. | Designed for industrial sensors with higher VIN tolerance; lacks WLCSP option - requires TSOT-5 or 6-pin DSBGA. | Choose when input may exceed 5.5 V or when TI's WEBENCH support is preferred over ADIsimPower. |
| RT8059GJ6 | 3.0 V fixed output, 600 mA, 3 MHz, 2.5–5.5 V input, 25 μA IQ - no power-save mode; uses external compensation. | Targeted at cost-sensitive consumer electronics; requires external RC network for loop stability and has slower transient response. | Choose only if board area allows extra components and light-load efficiency is non-critical. |
Compared with TPS62231DRYR and RT8059GJ6, ADP2108AUJZ-3.0-R7 offers superior light-load efficiency due to its optimized power-save mode, smallest PCB footprint via WLCSP-5, and guaranteed stability without external compensation - making it optimal for ultra-portable, battery-limited designs where size and standby life are primary constraints.
Availability
ADP2108AUJZ-3.0-R7 is available at Aetrix Electronics and suitable for wireless handsets, portable media players, and GPS navigation units requiring stable component supply, long-term lifecycle assurance, and consistent parametric performance across manufacturing lots.
Supply support for ADP2108AUJZ-3.0-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, 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 ADP2108 series was engineered specifically for space- and power-constrained portable electronics, delivering high-efficiency, low-IQ DC-DC conversion in wafer-level packages to enable thinner, longer-lasting handheld devices.
FAQ
What is the output voltage tolerance of the ADP2108AUJZ-3.0-R7 under full load and temperature range?
The ADP2108AUJZ-3.0-R7 delivers a fixed 3.0 V output with ±2% accuracy over the full operating junction temperature range (−40°C to +125°C) and input voltage range (2.3 V to 5.5 V) in PWM mode. This specification is guaranteed by production testing and applies to all load currents up to 600 mA, ensuring reliable core voltage delivery for 3.0 V logic interfaces without external trimming.
Does the ADP2108AUJZ-3.0-R7 require external compensation components?
No, the ADP2108AUJZ-3.0-R7 features fully internal compensation. Its control loop is factory-tuned to remain stable with standard external components: a 1 μH inductor and 10 μF output capacitor. Adding external compensation would destabilize the regulator and void the guaranteed performance metrics published in the ADP2108 datasheet Rev. H.
Can the ADP2108AUJZ-3.0-R7 operate with a 2.3 V input and still deliver 600 mA at 3.0 V output?
No - at VIN = 2.3 V, the ADP2108AUJZ-3.0-R7 enters 100% duty-cycle dropout mode and cannot sustain 3.0 V output at 600 mA. The minimum input voltage required to maintain regulation at full load is approximately 3.2 V (accounting for PFET RDS(on) and inductor DCR losses). Below that, VOUT drops linearly with VIN, as confirmed in the dropout characteristics of Figure 12.
What is the purpose of the FB pin on the ADP2108AUJZ-3.0-R7, and how should it be connected?
The FB pin on the ADP2108AUJZ-3.0-R7 is internally tied to the 3.0 V reference and is not user-accessible for adjustment. It must be connected directly to the output capacitor's VOUT node - no resistive divider or external circuitry is permitted. This connection closes the feedback loop for the internal error amplifier and is mandatory for proper regulation; floating or misrouting FB will cause output instability or failure to start.
How does the ADP2108AUJZ-3.0-R7 transition between PWM and power-save modes?
The ADP2108AUJZ-3.0-R7 transitions automatically at ~80 mA load current: above this threshold, it operates in fixed 3 MHz PWM mode for lowest ripple and highest efficiency; below it, it enters power-save mode, reducing switching frequency and entering idle periods to achieve <25 μA average input current. The transition is seamless with no output voltage overshoot or audible artifacts, as validated in Figures 8 and 9 of the datasheet.
ADP2108AUJZ-3.0-R7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- SOT-23-5 Thin, TSOT-23-5
- 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):
- 2.3V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 3V
- Voltage - Output (Max):
- -
- Current - Output:
- 600mA
- Frequency - Switching:
- 3MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TSOT-23-5
ADP2108AUJZ-3.0-R7 FAQ
1.How can I place an order for ADP2108AUJZ-3.0-R7 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADP2108AUJZ-3.0-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 ADP2108AUJZ-3.0-R7 reliable?
The price and inventory of ADP2108AUJZ-3.0-R7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADP2108AUJZ-3.0-R7 is usually 5 days.
3.What payment methods are accepted for ADP2108AUJZ-3.0-R7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADP2108AUJZ-3.0-R7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADP2108AUJZ-3.0-R7?
ADP2108AUJZ-3.0-R7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADP2108AUJZ-3.0-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 ADP2108AUJZ-3.0-R7?
For technical support, including ADP2108AUJZ-3.0-R7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADP2108AUJZ-3.0-R7 requirements.
6.How does Aetrix verify that ADP2108AUJZ-3.0-R7 is sourced from the original manufacturer or authorized distributors?
All ADP2108AUJZ-3.0-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 ADP2108AUJZ-3.0-R7 meets industry standards.
7.What is the process for return or replacement of ADP2108AUJZ-3.0-R7?
All ADP2108AUJZ-3.0-R7 units undergo pre-shipment inspection (PSI). If there is an issue with ADP2108AUJZ-3.0-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 ADP2108AUJZ-3.0-R7 part is unused and in its original packaging.
Return procedure for ADP2108AUJZ-3.0-R7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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