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Analog Devices Inc. ADP2108AUJZ-1.2-R7
- Part No.:
- ADP2108AUJZ-1.2-R7
- Manufacturer:
- Analog Devices Inc.
- Package:
- SOT-23-5 Thin, TSOT-23-5
- Datasheet:
-
ADP2108AUJZ-1.2-R7.pdf
- Description:
- IC REG BUCK 1.2V 600MA TSOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,103
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Product details
Overview
ADP2108AUJZ-1.2-R7 from Analog Devices is a fixed-output 1.2 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 operates in WLCSP-5 package for space-constrained portable power rails.
For engineers reviewing the ADP2108AUJZ-1.2-R7 datasheet, ADP2108AUJZ-1.2-R7 pinout, ADP2108AUJZ-1.2-R7 application, or ADP2108AUJZ-1.2-R7 equivalent, key selection criteria include its 1.2 V fixed output, 3 MHz constant-frequency PWM + power-save mode operation, 18 μA quiescent current, thermal shutdown at 150°C, and support for single-cell Li+/alkaline/NiMH inputs in handheld and battery-powered systems.
Technical Context
The ADP2108AUJZ-1.2-R7 employs a high-speed current-mode PWM control architecture with automatic transition to hysteretic power-save mode below 80 mA load. Its 3 MHz fixed-frequency operation enables use of sub-1 μH inductors and 0603-size capacitors, minimizing solution footprint.
It features integrated 320 mΩ PFET and 300 mΩ NFET switches in WLCSP-5, 100% duty-cycle low-dropout capability, undervoltage lockout at 2.15 V (falling), and internal soft start limiting inrush current during enable. The feedback loop is internally compensated and references a precision 1.2 V output setpoint.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.2 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 moderate-power digital loads without external boost. |
| Switching Frequency | 3.0 MHz ±0.5 MHz enables compact 1.0 μH inductor and 4.7 μF/10 μF ceramic capacitor solution. |
| Quiescent Current | 18 μA in active mode extends battery life in always-on subsystems like real-time clocks or BLE radios. |
| Shutdown Current | 0.2 μA guarantees near-zero drain during system sleep-critical for multi-year coin-cell applications. |
| Thermal Shutdown | 150°C threshold with 20°C hysteresis prevents damage under sustained overload or poor PCB thermal design. |
| UVLO Threshold | 2.15 V (falling) protects primary cells from deep discharge, preserving battery cycle life and safety. |
Pinout & Package
ADP2108AUJZ-1.2-R7 is packaged in a 5-ball Wafer-Level Chip Scale Package (WLCSP) with 0.5 mm pitch and 1.0 mm × 1.0 mm footprint. The package is bottom-terminal, requiring solder paste stencil and reflow-compatible layout.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN (A1) | Input Power Supply | Accepts 2.3–5.5 V; must be bypassed with ≥2.2 μF ceramic capacitor placed adjacent to ball for low-impedance path. |
| GND (A2) | Power Ground Reference | Common return for input/output capacitors and IC substrate; requires low-inductance connection to PCB ground plane. |
| SW (B) | Switch Node | Drain node of internal PFET and source of NFET; connects directly to inductor; high dv/dt demands tight layout and guard ring. |
| EN (C1) | Enable Control Input | Logic-level input (1.2 V high threshold); pulling low disables regulator and reduces supply current to 0.2 μA. |
| FB (C2) | Feedback Input | Internally connected to 1.2 V reference; not externally adjustable-used only for stability verification in fixed-output version. |
Key Features
| Feature | Design Value |
|---|---|
| Synchronous rectification | Integrated 320 mΩ PFET / 300 mΩ NFET eliminates external diode, enabling >90% efficiency at 100 mA–600 mA loads. |
| Power-save mode | Automatic transition at ~80 mA load reduces switching losses and maintains >85% efficiency down to 10 μA output current. |
| Internal soft start | Linear output ramp prevents input inrush and avoids brown-out on weak sources like coin cells or USB ports. |
| Current limit protection | 1300 mA typical PFET peak current limit prevents catastrophic failure during short-circuit or startup into heavy capacitive loads. |
| 100% duty-cycle operation | Maintains regulation even as input drops to within ~100 mV of output-essential for Li+ battery end-of-discharge operation. |
Applications
| Wireless Handset Baseband | Digital Camera Image Sensor |
|---|---|
Use Scenario: Powers baseband processor core rail in GSM/UMTS smartphones operating from single Li+ cell (3.0–4.2 V). IC Role / Device Role / Timing Role: Primary 1.2 V step-down regulator delivering clean, low-noise power with fast line/load transient response. Use Value: 3 MHz switching minimizes EMI coupling into RF front-end; 18 μA quiescent current extends standby time between calls. | Use Scenario: Supplies image sensor analog and digital cores in compact digital cameras with variable lighting conditions. IC Role / Device Role / Timing Role: Fixed 1.2 V point-of-load regulator with thermal shutdown protecting sensor during burst capture sequences. Use Value: 600 mA capability supports high-frame-rate CMOS sensors; WLCSP-5 footprint fits tight camera module layouts. |
| Portable Media Player SoC | GPS Navigation Unit MCU |
Use Scenario: Powers application processor I/O or memory interface rail in flash-based audio players using alkaline/NiMH batteries. IC Role / Device Role / Timing Role: Efficient buck converter accepting wide 2.3–5.5 V input, including partially discharged AA/AAA packs. Use Value: UVLO at 2.15 V prevents over-discharge of alkaline cells; 95% peak efficiency maximizes playback duration. | Use Scenario: Provides 1.2 V core voltage to GPS baseband MCU in automotive-grade portable navigation devices. IC Role / Device Role / Timing Role: Robust DC-DC regulator with −40°C to +125°C junction rating and thermal hysteresis for engine-bay-adjacent mounting. Use Value: 150°C thermal shutdown with 20°C hysteresis ensures reliable operation under sustained high-temperature conditions. |
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 |
|---|---|---|---|
| TPS62231DRYR | 1.2 V fixed, 600 mA, 3.6 MHz, 17 μA IQ, WSON-6 package (2.0 × 2.0 mm) | Larger footprint; higher switching frequency increases EMI filtering complexity but allows smaller inductors | Choose if board layout permits 2×2 mm package and higher-frequency EMI mitigation is acceptable. |
| RT8059GJ6 | 1.2 V fixed, 600 mA, 3 MHz, 25 μA IQ, WDFN-6L (2.0 × 2.0 mm), no power-save mode | Higher quiescent current; lacks automatic light-load mode transition, reducing ultra-low-power efficiency | Prefer when cost sensitivity outweighs battery-life optimization in mid-duty-cycle applications. |
Compared with TPS62231DRYR and RT8059GJ6, the ADP2108AUJZ-1.2-R7 offers the smallest footprint (1.0 × 1.0 mm), lowest shutdown current (0.2 μA), and seamless PWM-to-power-save transition-making it optimal for space- and energy-constrained portable designs where every micron and microamp matters.
Availability
ADP2108AUJZ-1.2-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 guaranteed traceable sourcing.
Supply support for ADP2108AUJZ-1.2-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 step-down converters for battery-powered portable electronics, emphasizing minimal external components, ultra-low quiescent current, and robust thermal and protection features.
FAQ
What is the output voltage tolerance of the ADP2108AUJZ-1.2-R7 over temperature and load?
The ADP2108AUJZ-1.2-R7 guarantees ±2% output voltage accuracy over full load (0–600 mA) and temperature (−40°C to +125°C) in PWM mode, and ±2.5% across the entire 2.3–5.5 V input range. This is achieved via laser-trimmed internal feedback and stable bandgap reference, ensuring consistent 1.2 V rail performance in portable systems.
Does the ADP2108AUJZ-1.2-R7 require external compensation components?
No, the ADP2108AUJZ-1.2-R7 uses internal compensation optimized for standard 1.0 μH inductors and 4.7–10 μF ceramic output capacitors. No external RC networks or compensation pins are needed-reducing BOM count and layout complexity while maintaining stability across all operating conditions.
Can the ADP2108AUJZ-1.2-R7 operate with a 2.3 V input and deliver full 600 mA at 1.2 V output?
Yes, the ADP2108AUJZ-1.2-R7 sustains 600 mA output across its full 2.3–5.5 V input range. At 2.3 V input, it operates in 100% duty-cycle mode to maintain regulation-verified in datasheet Figure 10 (load regulation) and Table 1 (output characteristics), making it suitable for deeply discharged Li+ or multi-alkaline battery operation.
What protection features are integrated into the ADP2108AUJZ-1.2-R7?
The ADP2108AUJZ-1.2-R7 integrates thermal shutdown (150°C trip, 130°C recovery), undervoltage lockout (2.15 V falling threshold), current limit (1300 mA PFET peak), short-circuit foldback (frequency halving), and soft-start-controlled inrush limiting. These ensure robust operation in consumer and industrial environments without external supervision circuitry.
Is the ADP2108AUJZ-1.2-R7 pin-compatible with other members of the ADP2108 family?
Yes, all ADP2108 variants-including ADP2108AUJZ-1.2-R7, ADP2108AUJZ-1.8-R7, and ADP2108AUJZ-3.3-R7-share identical WLCSP-5 pinout and package dimensions. Only the internal feedback divider differs; thus, PCBs designed for one fixed-output version can accept any other without layout change.
ADP2108AUJZ-1.2-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):
- 1.2V
- 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-1.2-R7 FAQ
1.How can I place an order for ADP2108AUJZ-1.2-R7 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADP2108AUJZ-1.2-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-1.2-R7 reliable?
The price and inventory of ADP2108AUJZ-1.2-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-1.2-R7 is usually 5 days.
3.What payment methods are accepted for ADP2108AUJZ-1.2-R7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADP2108AUJZ-1.2-R7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADP2108AUJZ-1.2-R7?
ADP2108AUJZ-1.2-R7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADP2108AUJZ-1.2-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-1.2-R7?
For technical support, including ADP2108AUJZ-1.2-R7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADP2108AUJZ-1.2-R7 requirements.
6.How does Aetrix verify that ADP2108AUJZ-1.2-R7 is sourced from the original manufacturer or authorized distributors?
All ADP2108AUJZ-1.2-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-1.2-R7 meets industry standards.
7.What is the process for return or replacement of ADP2108AUJZ-1.2-R7?
All ADP2108AUJZ-1.2-R7 units undergo pre-shipment inspection (PSI). If there is an issue with ADP2108AUJZ-1.2-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-1.2-R7 part is unused and in its original packaging.
Return procedure for ADP2108AUJZ-1.2-R7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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