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Analog Devices Inc. ADP2108AUJZ-1.82R7
- Part No.:
- ADP2108AUJZ-1.82R7
- Manufacturer:
- Analog Devices Inc.
- Package:
- SOT-23-5 Thin, TSOT-23-5
- Datasheet:
-
ADP2108AUJZ-1.82R7.pdf
- Description:
- IC REG BUCK 1.82V 600MA TSOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:4,338
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Product details
Overview
ADP2108AUJZ-1.82R7 from Analog Devices is a fixed-output, 1.82 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-1.82R7 datasheet, ADP2108AUJZ-1.82R7 pinout, ADP2108AUJZ-1.82R7 application, or ADP2108AUJZ-1.82R7 equivalent, key selection considerations include its 1.82 V fixed output, 3 MHz current-mode control, 18 μA quiescent current, 100% duty-cycle low-dropout mode, and thermal shutdown at 150°C.
Technical Context
The ADP2108AUJZ-1.82R7 employs a proprietary high-speed current-mode PWM architecture with automatic transition to 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 undervoltage lockout (2.15 V trip), 100% duty-cycle operation for near-input-output voltage regulation, and dual protection: cycle-by-cycle current limiting (1100–1500 mA PFET peak) and thermal shutdown with 20°C hysteresis.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.82 V ±2.5% over full input/load/temperature range - ensures stable core voltage for low-power microcontrollers and RF ICs. |
| Max Output Current | 600 mA across 2.3 V–5.5 V input - supports single-cell Li+/LiPo or multi-alkaline/NiMH powered systems without external boost. |
| Switching Frequency | 3.0 MHz ±0.5 MHz - enables compact 0.7–1.0 μH inductors and reduces EMI fundamental frequency above sensitive bands. |
| Quiescent Current | 18 μA typical - extends battery life in always-on sensor nodes and standby modes of handheld devices. |
| Shutdown Current | 0.2 μA - isolates input source during deep sleep, critical for energy harvesting and coin-cell applications. |
| Input Voltage Range | 2.3 V to 5.5 V - compatible with single Li+/LiPo (2.7–4.2 V), USB (4.75–5.25 V), and PCMCIA (5 V) sources without pre-regulation. |
| Efficiency Peak | 95% at mid-load - minimizes thermal rise in sealed enclosures and preserves battery runtime in portable media players. |
Pinout & Package
ADP2108AUJZ-1.82R7 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 lead-free, RoHS-compliant, and optimized for high-density PCB layouts with minimal thermal resistance (θJA = 105°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN (A1) | Power Input | Supplies PFET high-side switch; requires ≥2.2 μF ceramic bypass capacitor placed adjacent to ball for low-impedance path to GND. |
| GND (A2) | Ground Reference | Common return for input/output capacitors and internal power/feedback circuits; must be connected to solid ground plane. |
| SW (B) | Switch Node | Drain node of internal PFET and NFET; connects directly to inductor; high dv/dt demands tight layout and minimized trace area. |
| EN (C1) | Enable Control | Logic-level input (1.2 V high threshold); pulling low disables regulator and reduces input current to 0.2 μA. |
| FB (C2) | Feedback Input | Internally connected to 1.82 V reference; not externally adjustable - eliminates resistor divider and associated leakage/error. |
Key Features
| Feature | Design Value |
|---|---|
| Synchronous rectification | Integrated PFET/NFET power stage eliminates external Schottky diode, reducing conduction loss and board area. |
| Internal compensation | No external compensation network required - simplifies design, improves stability margin, and accelerates time-to-market. |
| Current-mode PWM + PSM | Seamless transition between fixed-frequency PWM (high efficiency at medium loads) and hysteretic power save mode (ultra-low IQ at light loads). |
| 100% duty-cycle operation | Maintains regulation down to VIN − VOUT ≈ 100 mV - essential for Li+ battery end-of-discharge support in wearables. |
| Soft start | Linear output ramp prevents inrush current and input voltage sag on weak sources like coin cells or energy harvesters. |
Applications
| Wireless Handset Baseband Power | Digital Camera Image Sensor Rail |
|---|---|
Use Scenario: Powers baseband processor and memory in GSM/UMTS smartphones operating from single Li+ cell (3.0–4.2 V). IC Role / Device Role / Timing Role: Primary 1.82 V core supply delivering up to 600 mA with fast transient response to burst-mode processing. Use Value: 3 MHz switching avoids interference with cellular RX bands; 18 μA quiescent current extends standby time beyond 7 days. | Use Scenario: Supplies image signal processor (ISP) and CMOS sensor analog front-end in compact digital cameras. IC Role / Device Role / Timing Role: Low-noise, tightly regulated 1.82 V rail enabling <1% output ripple for clean ADC reference and analog circuitry. Use Value: WLCSP-5 package fits within 2.5 mm × 2.5 mm camera module footprint; 95% efficiency limits thermal impact on optical alignment. |
| Portable Media Player Audio Codec | GPS Navigation Unit RF Front-End |
Use Scenario: Powers stereo audio codec and DAC in flash-based MP3 players using alkaline/NiMH batteries (3.0–4.5 V). IC Role / Device Role / Timing Role: Stable 1.82 V supply for low-jitter clock generation and analog audio stages requiring minimal PSRR degradation. Use Value: Internal soft start prevents pop/click at power-on; 100% duty-cycle mode sustains operation down to 2.3 V battery cutoff. | Use Scenario: Delivers clean 1.82 V bias to GPS LNA and downconverter ICs in automotive-grade navigation units. IC Role / Device Role / Timing Role: High PSRR and low output noise ensure minimal phase noise injection into 1.575 GHz GPS receiver chain. Use Value: Thermal shutdown (150°C) and UVLO (2.15 V) protect against engine-bay temperature excursions and cold-cranking voltage dips. |
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 | 1.8 V fixed output (±1%), 3 MHz, 600 mA, 17 μA IQ, WSON-6 package (2.0 × 2.0 mm) | Larger footprint; no 1.82 V option - requires output adjustment or tolerance acceptance | Choose when board space allows larger package and 1.8 V suffices for system timing margin. |
| RT8059GJ6 | 1.8 V fixed output, 3 MHz, 600 mA, 25 μA IQ, WDFN-6 (1.5 × 1.5 mm), no PSM mode | Higher quiescent current; lacks power save mode - reduced light-load efficiency | Choose when cost sensitivity outweighs battery life requirements and continuous PWM operation is acceptable. |
Compared with TPS62231DRYR and RT8059GJ6, the ADP2108AUJZ-1.82R7 offers exact 1.82 V output matching common FPGA I/O banks and ASIC core rails, smallest WLCSP footprint (1.0 × 1.0 mm), and lowest shutdown current (0.2 μA), making it optimal for ultra-portable, battery-limited designs.
Availability
ADP2108AUJZ-1.82R7 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 guaranteed WLCSP packaging consistency.
Supply support for ADP2108AUJZ-1.82R7 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 ultra-compact, high-efficiency step-down regulators for battery-powered portable electronics where size, efficiency, and low quiescent current are critical design constraints.
FAQ
What is the output voltage tolerance of the ADP2108AUJZ-1.82R7 over temperature and load?
The ADP2108AUJZ-1.82R7 guarantees ±2.5% output voltage accuracy across −40°C to +125°C junction temperature, 2.3 V to 5.5 V input, and 0–600 mA load in PWM mode. This includes initial tolerance, line regulation, load regulation, and thermal drift - verified per Analog Devices' Rev. H datasheet Table 1.
Does the ADP2108AUJZ-1.82R7 require external compensation components?
No, the ADP2108AUJZ-1.82R7 features fully internal compensation. Its current-mode control architecture and fixed 1.82 V output eliminate the need for external resistors or capacitors in the feedback loop, reducing BOM count and layout complexity while ensuring stability with standard 0603 ceramic capacitors.
Can the ADP2108AUJZ-1.82R7 operate with a 2.3 V input and deliver full 600 mA at 1.82 V?
Yes, the ADP2108AUJZ-1.82R7 delivers 600 mA continuously at 1.82 V output across the entire 2.3 V to 5.5 V input range. At 2.3 V input, it enters 100% duty-cycle mode to maintain regulation, as confirmed in the General Description and Specifications sections of the ADP2108 datasheet Rev. H.
What protection features are integrated into the ADP2108AUJZ-1.82R7?
The ADP2108AUJZ-1.82R7 integrates current overload protection (PFET peak limit 1100–1500 mA), thermal shutdown (150°C trip with 20°C hysteresis), undervoltage lockout (2.15 V falling threshold), and short-circuit frequency foldback. These functions are fully autonomous and require no external circuitry to activate.
Is the ADP2108AUJZ-1.82R7 pin-compatible with other variants in the ADP2108 family?
Yes, all ADP2108 variants - including ADP2108AUJZ-1.82R7, ADP2108AUJZ-1.8R7, and ADP2108AUJZ-3.3R7 - share identical WLCSP-5 pinout and electrical interface. Only the internal feedback divider differs to set the fixed output voltage; no PCB redesign is needed when substituting between same-package variants.
ADP2108AUJZ-1.82R7 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:
- Obsolete
- 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):
- 1.82V
- 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-1.82R7 FAQ
1.How can I place an order for ADP2108AUJZ-1.82R7 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADP2108AUJZ-1.82R7 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-1.82R7 reliable?
The price and inventory of ADP2108AUJZ-1.82R7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADP2108AUJZ-1.82R7 is usually 5 days.
3.What payment methods are accepted for ADP2108AUJZ-1.82R7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADP2108AUJZ-1.82R7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADP2108AUJZ-1.82R7?
ADP2108AUJZ-1.82R7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADP2108AUJZ-1.82R7 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-1.82R7?
For technical support, including ADP2108AUJZ-1.82R7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADP2108AUJZ-1.82R7 requirements.
6.How does Aetrix verify that ADP2108AUJZ-1.82R7 is sourced from the original manufacturer or authorized distributors?
All ADP2108AUJZ-1.82R7 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-1.82R7 meets industry standards.
7.What is the process for return or replacement of ADP2108AUJZ-1.82R7?
All ADP2108AUJZ-1.82R7 units undergo pre-shipment inspection (PSI). If there is an issue with ADP2108AUJZ-1.82R7, 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-1.82R7 part is unused and in its original packaging.
Return procedure for ADP2108AUJZ-1.82R7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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