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Analog Devices Inc. ADP2108AUJZ-1.5-R7
- Part No.:
- ADP2108AUJZ-1.5-R7
- Manufacturer:
- Analog Devices Inc.
- Package:
- SOT-23-5 Thin, TSOT-23-5
- Datasheet:
-
ADP2108AUJZ-1.5-R7.pdf
- Description:
- IC REG BUCK 1.5V 600MA TSOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,336
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Product details
Overview
ADP2108AUJZ-1.5-R7 from Analog Devices is a fixed-output, 1.5 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 power switches, internal compensation, soft start, and operates in WLCSP-5 package for space-constrained portable power rails.
For engineers reviewing the ADP2108AUJZ-1.5-R7 datasheet, ADP2108AUJZ-1.5-R7 pinout, ADP2108AUJZ-1.5-R7 application, or ADP2108AUJZ-1.5-R7 equivalent, key selection criteria include light-load efficiency (18 μA quiescent current), 100% duty-cycle dropout mode, thermal shutdown (150°C), and compatibility with tiny multilayer inductors (e.g., 1 µH) in battery-powered systems.
Technical Context
The ADP2108AUJZ-1.5-R7 employs a high-speed current-mode PWM architecture with automatic transition to power-save mode below 80 mA load. Its fixed 3 MHz oscillator enables compact external components while maintaining fast line/load transient response via peak-current control and internal error amplifier feedback.
It integrates PFET/NFET synchronous rectification (320 mΩ/300 mΩ on-resistance in WLCSP), undervoltage lockout (2.15 V fall threshold), and short-circuit protection with frequency foldback. The device supports 100% duty cycle operation and features logic-controlled shutdown with ≤0.2 μA supply current.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.5 V ±2% accuracy ensures stable core voltage for low-power microcontrollers and sensors. |
| Max Output Current | 600 mA across full 2.3–5.5 V input range supports single-cell Li+/alkaline-powered subsystems. |
| Switching Frequency | 3.0 MHz ±0.5 MHz enables use of sub-1 µH inductors and <10 µF ceramic output capacitors. |
| Quiescent Current | 18 µA in active mode extends battery life in always-on sensor nodes and standby circuits. |
| Shutdown Current | 0.2 µA guarantees minimal leakage during system sleep, critical for multi-year IoT deployments. |
| Efficiency Peak | 95% at mid-load reduces thermal stress and simplifies thermal design in sealed enclosures. |
| Operating Temp | −40°C to +125°C junction range supports automotive infotainment and industrial handhelds. |
Pinout & Package
ADP2108AUJZ-1.5-R7 uses a 5-ball Wafer-Level Chip Scale Package (WLCSP) with 0.5 mm pitch and 1.0 mm × 1.0 mm footprint. Thermal resistance θJA = 105°C/W on JEDEC 2S2P PCB.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN (A1) | Input Power Supply | Accepts 2.3–5.5 V; requires ≥2.2 µF bypass capacitor placed adjacent to ball for EMI suppression and stability. |
| GND (A2) | Power Ground Reference | Common return path for input/output capacitors and IC substrate; must be low-impedance plane connection. |
| SW (B) | Switch Node | Drain of integrated PFET and NFET; connects directly to inductor; high dv/dt node requiring tight layout. |
| EN (C1) | Enable Control Input | Logic-high (>1.2 V) enables regulation; logic-low (<0.4 V) disables converter and reduces IQ to 0.2 µA. |
| FB (C2) | Feedback Input | Internally connected to 1.5 V reference; not externally adjustable-used only for stability verification in fixed-output variant. |
Key Features
| Feature | Design Value |
|---|---|
| Synchronous Rectification | Integrated PFET/NFET eliminates external diode, enabling >90% efficiency at 100 mA and reducing board area. |
| Power Save Mode | Automatic transition at ~80 mA load lowers switching frequency and quiescent current, sustaining >85% efficiency down to 10 µA output. |
| Internal Compensation | Eliminates external compensation network, reducing BOM count and ensuring stability with standard 1 µH/10 µF LC filter. |
| 100% Duty Cycle Operation | Maintains regulation under low-VIN or high-load conditions (e.g., 2.5 V input → 1.5 V out), avoiding brownout in fading battery scenarios. |
| Thermal Shutdown | 150°C trip with 20°C hysteresis prevents permanent damage during sustained overload or poor heatsinking. |
Applications
| Wireless Handset Baseband | Digital Camera Image Sensor |
|---|---|
Use Scenario: Powers baseband processor core rail in GSM/UMTS smartphones operating from single Li-ion cell (3.0–4.2 V). IC Role / Device Role / Timing Role: Primary step-down regulator delivering clean, low-noise 1.5 V at up to 600 mA with fast transient response to burst-mode processing loads. Use Value: 3 MHz switching avoids AM radio band interference; 18 µA quiescent current extends standby time between calls. | Use Scenario: Supplies image sensor analog and digital cores in compact digital cameras with USB or coin-cell backup. IC Role / Device Role / Timing Role: Fixed 1.5 V output powers CIS analog front-end and column ADC, requiring tight voltage tolerance and low ripple. Use Value: ±2% output accuracy and internal soft start prevent sensor reset glitches during power-up; WLCSP-5 enables direct placement beneath sensor module. |
| Portable Media Player SoC | GPS Navigation Unit RF Front-End |
Use Scenario: Regulates application processor I/O or memory interface voltage in flash-based audio players powered by dual alkaline cells (2.4–3.2 V). IC Role / Device Role / Timing Role: High-efficiency buck converter supporting dynamic voltage scaling during playback vs. idle states. Use Value: Power save mode maintains >88% efficiency at 5 mA playback current, extending runtime beyond 20 hours per charge. | Use Scenario: Provides low-noise 1.5 V bias to GPS LNA and mixer stages in automotive-grade navigation units. IC Role / Device Role / Timing Role: Noise-sensitive analog supply rail with fast line transient response to compensate for engine cranking voltage dips. Use Value: 3 MHz operation minimizes conducted EMI into RF bands; 100% duty cycle sustains regulation during 2.4 V cold-crank 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 | Fixed 1.5 V, 600 mA, 3.6 MHz, 2.05–6.0 V input; 22 µA IQ; WSON-6 package (1.5 × 1.5 mm). | Larger footprint and higher minimum input voltage limit use in sub-2.3 V alkaline/NiMH systems. | Select when higher switching frequency or wider input range justifies larger package and cost premium. |
| RT8059GJ6 | Fixed 1.5 V, 600 mA, 3 MHz, 2.5–5.5 V input; 25 µA IQ; DFN-6 (2.0 × 2.0 mm); no power save mode. | Lacks power save mode - lower light-load efficiency; wider package increases PCB area. | Choose for cost-sensitive designs where continuous PWM suffices and thermal margin allows larger footprint. |
Compared with TPS62231DRYR and RT8059GJ6, the ADP2108AUJZ-1.5-R7 offers the smallest footprint (1.0 × 1.0 mm), lowest quiescent current (18 µA), and guaranteed operation down to 2.3 V input - making it optimal for ultra-compact, single-cell battery systems demanding longest runtime.
Availability
ADP2108AUJZ-1.5-R7 is available at Aetrix Electronics and suitable for wireless handsets, portable media players, digital cameras, and GPS navigation units requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.
Supply support for ADP2108AUJZ-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.
The ADP2108 product line delivers compact, high-efficiency DC-DC conversion for battery-powered portable electronics, emphasizing minimal external component count, ultra-low quiescent current, and robust thermal protection.
FAQ
What is the output voltage tolerance of the ADP2108AUJZ-1.5-R7 over temperature and load?
The ADP2108AUJZ-1.5-R7 maintains ±2% output voltage accuracy across −40°C to +125°C junction temperature and full 0–600 mA load range in PWM mode. At light loads (power save mode), output ripple increases to ~1.5% peak-to-peak above nominal, but regulation remains within ±2.5% including all process, voltage, and temperature variations per datasheet Table 1.
Does the ADP2108AUJZ-1.5-R7 require external compensation components?
No, the ADP2108AUJZ-1.5-R7 features fully internal compensation optimized for standard 1 µH inductors and 10 µF ceramic output capacitors. No external RC networks or feedforward capacitors are needed - simplifying layout and ensuring stability without tuning.
Can the ADP2108AUJZ-1.5-R7 operate with a 2.3 V input and deliver 600 mA at 1.5 V?
Yes, the ADP2108AUJZ-1.5-R7 is specified to deliver full 600 mA output current across its entire 2.3 V to 5.5 V input range. At 2.3 V input, it enters 100% duty cycle mode to sustain 1.5 V output, with efficiency dropping to ~82% (per Figure 15), but regulation remains stable and thermally safe within limits.
What is the recommended PCB layout practice for the SW pin of the ADP2108AUJZ-1.5-R7?
Route the SW pin (ball B) with a short, wide copper trace directly to the inductor pad - minimizing loop area to reduce EMI and voltage spikes. Avoid vias or stubs; place the inductor within 1 mm of the WLCSP ball. Use solid ground plane underneath and avoid routing sensitive analog traces near this node.
Is the ADP2108AUJZ-1.5-R7 pin-compatible with other ADP2108 fixed-output variants?
Yes, all ADP2108 fixed-output versions - including ADP2108AUJZ-1.5-R7, ADP2108AUJZ-1.8-R7, and ADP2108AUJZ-3.3-R7 - share identical WLCSP-5 pinout, package dimensions, and electrical interface. Only the internal feedback divider differs; no PCB redesign is required when changing output voltage variants.
ADP2108AUJZ-1.5-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):
- 1.5V
- 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-1.5-R7 FAQ
1.How can I place an order for ADP2108AUJZ-1.5-R7 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADP2108AUJZ-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 ADP2108AUJZ-1.5-R7 reliable?
The price and inventory of ADP2108AUJZ-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 ADP2108AUJZ-1.5-R7 is usually 5 days.
3.What payment methods are accepted for ADP2108AUJZ-1.5-R7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADP2108AUJZ-1.5-R7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADP2108AUJZ-1.5-R7?
ADP2108AUJZ-1.5-R7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADP2108AUJZ-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 ADP2108AUJZ-1.5-R7?
For technical support, including ADP2108AUJZ-1.5-R7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADP2108AUJZ-1.5-R7 requirements.
6.How does Aetrix verify that ADP2108AUJZ-1.5-R7 is sourced from the original manufacturer or authorized distributors?
All ADP2108AUJZ-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 ADP2108AUJZ-1.5-R7 meets industry standards.
7.What is the process for return or replacement of ADP2108AUJZ-1.5-R7?
All ADP2108AUJZ-1.5-R7 units undergo pre-shipment inspection (PSI). If there is an issue with ADP2108AUJZ-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 ADP2108AUJZ-1.5-R7 part is unused and in its original packaging.
Return procedure for ADP2108AUJZ-1.5-R7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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