My Inquiry
My Account
Analog Devices Inc. ADP2108AUJZ-3.3-R7
- Part No.:
- ADP2108AUJZ-3.3-R7
- Manufacturer:
- Analog Devices Inc.
- Package:
- SOT-23-5 Thin, TSOT-23-5
- Datasheet:
-
ADP2108AUJZ-3.3-R7.pdf
- Description:
- IC REG BUCK 3.3V 600MA TSOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:7,265
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
ADP2108AUJZ-3.3-R7 from Analog Devices is a fixed-output, 3.3 V, 600 mA synchronous step-down DC-DC converter with 3 MHz fixed-frequency PWM operation, 2.3 V to 5.5 V input range, and internal compensation. It delivers high efficiency (up to 95%) in ultra-compact 5-ball WLCSP packaging for space-constrained portable power rails.
For engineers reviewing the ADP2108AUJZ-3.3-R7 datasheet, ADP2108AUJZ-3.3-R7 pinout, ADP2108AUJZ-3.3-R7 application, or ADP2108AUJZ-3.3-R7 equivalent, key selection criteria include light-load efficiency via power save mode, 100% duty cycle low-dropout capability, thermal shutdown at 150°C, and compatibility with tiny multilayer inductors (e.g., 1 µH) and ceramic capacitors.
Technical Context
The ADP2108AUJZ-3.3-R7 employs a proprietary high-speed current-mode PWM control architecture operating at 3 MHz nominal frequency, enabling fast line and load transient response. Its dual-mode operation-PWM at medium-to-heavy loads and hysteretic power save mode below ~80 mA-optimizes efficiency across the full 0–600 mA load range.
It integrates a PFET high-side switch (320 mΩ typical in WLCSP), NFET synchronous rectifier (300 mΩ), internal soft start, undervoltage lockout (2.15 V falling threshold), and short-circuit protection via frequency foldback. The feedback loop is closed via the FB pin referenced to the fixed 3.3 V output.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.3 V ±2% accuracy in PWM mode; enables direct replacement of LDOs without external resistors. |
| Max Output Current | 600 mA across full 2.3–5.5 V input range; supports core logic or I/O rail in handheld devices. |
| Switching Frequency | 3.0 MHz ±0.5 MHz; allows use of sub-1 mm height, 1 µH inductors and reduces output capacitor size. |
| Quiescent Current | 18 µA typical; extends battery life in always-on subsystems like GPS or Bluetooth radios. |
| Shutdown Current | 0.2 µA max; ensures negligible drain during system sleep states. |
| Input Voltage Range | 2.3 V to 5.5 V; compatible with single Li+/Li-poly, USB 5 V, or multi-cell alkaline/NiMH sources. |
| Efficiency Peak | 95% at mid-load; minimizes thermal rise in sealed enclosures and improves power density. |
Pinout & Package
ADP2108AUJZ-3.3-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. The package is lead-free, RoHS-compliant, and optimized for minimal PCB area in portable designs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN (Ball A1) | Power input supply node | Connects to 2.3–5.5 V source; requires ≥2.2 µF bypass capacitor placed adjacent to ball for stability. |
| GND (Ball A2) | Power and signal reference ground | Common return for input/output capacitors and IC substrate; must be low-impedance plane connection. |
| SW (Ball B) | Switch node | Drain of integrated PFET and NFET; connects directly to inductor; high dv/dt node requiring tight layout. |
| EN (Ball C1) | Logic-enable control input | Active-high (≥1.2 V); pulls device into <0.2 µA shutdown when <0.4 V; no external pull-up required. |
| FB (Ball C2) | Feedback input | Internally connected to 3.3 V reference; not user-adjustable; ties directly to output capacitor for regulation. |
Key Features
| Feature | Design Value |
|---|---|
| Synchronous rectification | Integrated PFET/NFET switches eliminate external diode, reducing conduction loss and improving efficiency >90% at 100 mA. |
| Power save mode | Automatically engages below ~80 mA load; reduces switching frequency and quiescent current to extend battery runtime in idle states. |
| 100% duty cycle operation | Enables dropout as low as VOUT − VIN ≈ 0.1 V at light loads; maintains regulation even as input voltage sags near 3.3 V. |
| Internal soft start | Linear output ramp prevents inrush current and input voltage sag during startup from weak sources like coin cells. |
| Thermal shutdown with hysteresis | Shuts down at 150°C junction temperature and re-enables only after cooling to ≤130°C, preventing thermal cycling damage. |
Applications
| Wireless Handset Power Management | Digital Camera Core Supply |
|---|---|
Use Scenario: Powers baseband processor I/O rails and RF front-end bias in GSM/UMTS smartphones with single-cell Li+ battery input. IC Role / Device Role / Timing Role: Primary step-down regulator delivering stable 3.3 V at up to 600 mA with fast transient response to burst-mode transmission loads. Use Value: 3 MHz switching enables compact 1 µH inductor + 4.7 µF input / 10 µF output ceramic solution, reducing board area by >40% vs. lower-frequency alternatives. | Use Scenario: Supplies image sensor interface and LCD driver circuitry in compact digital cameras powered by two alkaline AA cells. IC Role / Device Role / Timing Role: Fixed 3.3 V buck converter operating across 2.3–3.2 V input range, maintaining regulation during battery discharge. Use Value: 100% duty cycle mode sustains output as battery drops to 3.3 V, eliminating need for backup LDO and simplifying power tree. |
| Portable Media Player Audio Codec | GPS Navigation Unit RF Section |
Use Scenario: Generates clean 3.3 V supply for high-fidelity audio DAC and headphone amplifier in flash-based MP3 players. IC Role / Device Role / Timing Role: Low-noise, high-PSRR DC-DC converter with internal compensation and soft start to prevent pop/click artifacts at power-on. Use Value: 18 µA quiescent current extends playback time between charges; power save mode eliminates switching noise during pause states. | Use Scenario: Powers GPS RF front-end (LNA, mixer, VCO) and baseband processor in automotive-grade navigation units with wide-temperature operation. IC Role / Device Role / Timing Role: Robust 3.3 V regulator supporting −40°C to +125°C ambient operation with thermal shutdown and UVLO protection. Use Value: 150°C thermal shutdown with 20°C hysteresis ensures reliable operation under sustained high-power GPS acquisition in hot vehicle cabins. |
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 | 3 MHz, 600 mA, fixed 3.3 V; 19 µA IQ; WSON-6 package (1.5 × 1.5 mm) | Larger footprint; requires external soft-start capacitor; no power save mode hysteresis spec | Choose if WSON handling is preferred over WLCSP and board area is less constrained. |
| RT8059GJ6 | 3 MHz, 600 mA, fixed 3.3 V; 25 µA IQ; DFN-6 (2 × 2 mm); includes spread-spectrum modulation | Higher quiescent current; larger package; adds EMI reduction but lacks 100% duty cycle mode | Choose when EMI compliance is critical and dropout margin above 3.3 V is sufficient. |
Compared with TPS62231DRYR and RT8059GJ6, the ADP2108AUJZ-3.3-R7 offers the smallest footprint (1.0 × 1.0 mm), lowest shutdown current (0.2 µA), and guaranteed 100% duty cycle operation-making it optimal for ultra-portable, battery-sensitive designs where board space and deep-sleep power are primary constraints.
Availability
ADP2108AUJZ-3.3-R7 is available at Aetrix Electronics and suitable for wireless handsets, portable media players, and digital camera power management requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.
Supply support for ADP2108AUJZ-3.3-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 ultra-compact, high-efficiency DC-DC converters for battery-powered portable electronics, emphasizing minimal external components, low quiescent current, and robust protection features for consumer and industrial mobile applications.
FAQ
What is the maximum output current capability of the ADP2108AUJZ-3.3-R7 across its input voltage range?
The ADP2108AUJZ-3.3-R7 delivers up to 600 mA of continuous output current across its full 2.3 V to 5.5 V input voltage range, as confirmed in the Absolute Maximum Ratings and Specifications tables of the Rev. H datasheet. This rating holds under thermal limits (TJ ≤ 125°C) with proper PCB thermal design using the 5-ball WLCSP package (θJA = 105°C/W).
Does the ADP2108AUJZ-3.3-R7 require external compensation components?
No, the ADP2108AUJZ-3.3-R7 features fully internal compensation, eliminating the need for external RC networks or compensation capacitors. This simplifies design, reduces BOM count, and ensures stable operation with the recommended 1 µH inductor and 10 µF output capacitor per the Typical Applications Circuit in the datasheet.
How does the power save mode function in the ADP2108AUJZ-3.3-R7, and at what load current does it activate?
The ADP2108AUJZ-3.3-R7 automatically enters power save mode when load current falls below approximately 80 mA. In this mode, it operates in a hysteretic fashion with reduced switching frequency and periodic idle periods, lowering quiescent current to ~18 µA and improving light-load efficiency-critical for extending battery life in standby states.
What protection features are integrated into the ADP2108AUJZ-3.3-R7?
The ADP2108AUJZ-3.3-R7 integrates current limit (1100–1500 mA PFET peak), thermal shutdown (150°C with 20°C hysteresis), undervoltage lockout (2.15 V falling threshold), short-circuit protection via frequency foldback, and internal soft start. These ensure robust operation under fault conditions without requiring external protection circuitry.
Is the ADP2108AUJZ-3.3-R7 pin-compatible with other variants in the ADP2108 family, such as the ADP2108AUJZ-1.8-R7?
Yes, all ADP2108 fixed-output variants-including ADP2108AUJZ-3.3-R7, ADP2108AUJZ-1.8-R7, and others-share identical 5-ball WLCSP pinout, package dimensions, and electrical interface. Only the internal feedback divider differs; thus, they are drop-in replacements for different output voltage requirements without PCB changes.
ADP2108AUJZ-3.3-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):
- 3.3V
- 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-3.3-R7 FAQ
1.How can I place an order for ADP2108AUJZ-3.3-R7 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADP2108AUJZ-3.3-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-3.3-R7 reliable?
The price and inventory of ADP2108AUJZ-3.3-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-3.3-R7 is usually 5 days.
3.What payment methods are accepted for ADP2108AUJZ-3.3-R7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADP2108AUJZ-3.3-R7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADP2108AUJZ-3.3-R7?
ADP2108AUJZ-3.3-R7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADP2108AUJZ-3.3-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-3.3-R7?
For technical support, including ADP2108AUJZ-3.3-R7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADP2108AUJZ-3.3-R7 requirements.
6.How does Aetrix verify that ADP2108AUJZ-3.3-R7 is sourced from the original manufacturer or authorized distributors?
All ADP2108AUJZ-3.3-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-3.3-R7 meets industry standards.
7.What is the process for return or replacement of ADP2108AUJZ-3.3-R7?
All ADP2108AUJZ-3.3-R7 units undergo pre-shipment inspection (PSI). If there is an issue with ADP2108AUJZ-3.3-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-3.3-R7 part is unused and in its original packaging.
Return procedure for ADP2108AUJZ-3.3-R7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ADP2108AUJZ-3.3-R7 Tags
-
TPS562201DDCR
Texas Instruments
-
MC34063ABD-TR
STMicroelectronics
-
TPS561201DDCR
Texas Instruments
-
MC33063ADR
Texas Instruments
-
MC34063ADR
Texas Instruments
-
TPS560200DBVR
Texas Instruments
-
AP3012KTR-G1
Diodes Incorporated
-
TLV61048DBVR
Texas Instruments
-
AZ34063UMTR-G1
Diodes Incorporated
-
TPS562200DDCR
Texas Instruments
-
AP62300TWU-7
Diodes Incorporated
-
MC34063EBD-TR
STMicroelectronics
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
