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Analog Devices Inc. ADP2108AUJZ-1.0-R7
- Part No.:
- ADP2108AUJZ-1.0-R7
- Manufacturer:
- Analog Devices Inc.
- Package:
- SOT-23-5 Thin, TSOT-23-5
- Datasheet:
-
ADP2108AUJZ-1.0-R7.pdf
- Description:
- IC REG BUCK 1V 600MA TSOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:600
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Product details
Overview
ADP2108AUJZ-1.0-R7 from Analog Devices is a fixed-output, 1.0 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 operates in WLCSP-5 package for space-constrained portable power rails.
For engineers reviewing the ADP2108AUJZ-1.0-R7 datasheet, ADP2108AUJZ-1.0-R7 pinout, ADP2108AUJZ-1.0-R7 application, or ADP2108AUJZ-1.0-R7 equivalent, key selection criteria include its 1.0 V fixed output, ultra-low 18 μA quiescent current, 100% duty-cycle low-dropout mode, thermal shutdown at 150°C, and compatibility with tiny 1 µH inductors and 4.7–10 µF ceramic capacitors.
Technical Context
The ADP2108AUJZ-1.0-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 the full 0–600 mA load range.
It features integrated undervoltage lockout (2.15 V falling threshold), internal soft start, 100% duty-cycle capability for low-input-voltage operation, and robust protection including current limiting (1100–1500 mA PFET peak), thermal shutdown (150°C with 20°C hysteresis), and short-circuit frequency foldback.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.0 V ±2.5% over full input and temperature range - ensures stable core voltage for low-power microcontrollers and sensors. |
| Max Output Current | 600 mA continuous - supports single-core processors, RF transceivers, and multi-rail PMIC subsystems without external boost. |
| Input Voltage Range | 2.3 V to 5.5 V - compatible with single Li+/Li-Po cells, USB ports, and multi-cell alkaline/NiMH sources. |
| Switching Frequency | 3.0 MHz ±0.5 MHz - enables use of sub-1.2 mm height 1 µH inductors and reduces output capacitor size by >5× vs. 500 kHz converters. |
| Quiescent Current | 18 μA typical - extends battery life in always-on sensor nodes and standby modes of handheld devices. |
| Shutdown Current | 0.2 μA maximum - minimizes leakage drain during system sleep, critical for multi-year battery-powered IoT endpoints. |
| Efficiency Peak | 95% at 200 mA - reduces thermal load in sealed enclosures and enables higher power density in compact PCB layouts. |
Pinout & Package
ADP2108AUJZ-1.0-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. The package is lead-free, RoHS-compliant, and optimized for minimal board area in ultra-thin portable designs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN (Ball A1) | Power Input | Supplies 2.3–5.5 V to internal PFET switch; requires ≥2.2 µF ceramic bypass capacitor placed adjacent to this ball. |
| GND (Ball A2) | Ground Reference | Common return for input/output capacitors and IC substrate; must be connected to low-impedance ground plane. |
| SW (Ball B) | Switch Node | Drain node of integrated PFET/NFET; connects directly to inductor; high dv/dt node requiring tight layout and guard ring. |
| EN (Ball C1) | Enable Control | Logic-level input (1.2 V high threshold); pulling low disables regulator and reduces input current to ≤0.2 μA. |
| FB (Ball C2) | Feedback Input | Internally tied to 1.0 V reference; not user-accessible on fixed-output variants - no external resistor divider required. |
Key Features
| Feature | Design Value |
|---|---|
| Synchronous rectification | Integrated NFET replaces external Schottky diode - eliminates 300–500 mV forward drop, enabling >90% efficiency at light loads. |
| Internal compensation | No external compensation network required - reduces BOM count and design validation time for production-grade power rails. |
| 100% duty-cycle mode | Extends regulation down to VIN ≈ VOUT - maintains 1.0 V output even as battery discharges to 1.1 V, avoiding brownout resets. |
| Current-mode control | Provides inherent cycle-by-cycle current limiting and superior transient response (<10 µs recovery from 50→600 mA load step). |
| Power-save mode transition | Smooth, hysteresis-controlled shift at 80 mA - avoids audible switching noise and maintains >85% efficiency down to 100 µA load. |
Applications
| Digital Camera Core Rail | Wireless Handset Baseband |
|---|---|
Use Scenario: Powers image signal processor (ISP) and CMOS sensor digital core in compact digital cameras and action cams. IC Role / Device Role / Timing Role: Primary 1.0 V supply for ASIC logic blocks requiring low-noise, tightly regulated voltage under dynamic burst capture loads. Use Value: 3 MHz switching avoids interference with image sensor pixel clock harmonics; 95% efficiency minimizes heat near optical modules. |
Use Scenario: Supplies baseband processor and memory interface in GSM/UMTS feature phones and VoLTE handsets. IC Role / Device Role / Timing Role: Main SoC core rail delivering 1.0 V at up to 600 mA during call processing and data transmission bursts. Use Value: Ultra-low 18 μA quiescent current extends standby time; WLCSP-5 footprint fits within narrow PCB margins beside antenna modules. |
| Portable Media Player DSP | PDA Application Processor |
Use Scenario: Provides clean 1.0 V supply to audio DSP and codec in flash-based MP3/WMA players. IC Role / Device Role / Timing Role: Low-noise, high-PSRR DC-DC stage feeding sensitive analog audio circuitry and digital logic simultaneously. Use Value: Internal soft start prevents inrush-induced voltage sag on shared battery rail; 100% duty mode sustains playback during deep discharge. |
Use Scenario: Powers ARM9/ARM11 application processor cores in legacy PDAs and industrial handheld terminals. IC Role / Device Role / Timing Role: Primary core voltage regulator supporting dynamic frequency scaling between 100 MHz and 600 MHz operation. Use Value: Fast load transient response (<15 µs) prevents core voltage droop during CPU wake-up; thermal shutdown protects against enclosure overheating. |
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 | 1.0 V fixed, 600 mA, 3.6 MHz, 17 μA IQ, WSON-6 package (2.0 × 2.0 mm) | Larger footprint and different pinout; lacks 100% duty-cycle mode and has higher UVLO (2.5 V) | Select when board space allows larger package and input never drops below 2.5 V. |
| RT8059GJ6 | 1.0 V fixed, 600 mA, 3 MHz, 25 μA IQ, WDFN-6 (1.5 × 1.5 mm), no power-save mode | Higher quiescent current; no PSM → higher light-load ripple; different enable polarity (active-low) | Select for cost-sensitive designs where light-load efficiency is secondary to BOM simplicity. |
Compared with TPS62231DRYR and RT8059GJ6, the ADP2108AUJZ-1.0-R7 offers the smallest footprint (1.0 × 1.0 mm), lowest quiescent current (18 μA), and unique 100% duty-cycle capability-making it optimal for battery-powered devices requiring longest runtime and deepest discharge tolerance.
Availability
ADP2108AUJZ-1.0-R7 is available at Aetrix Electronics and suitable for portable media players, wireless handsets, and digital camera power management requiring stable component supply, long-lifecycle support, and consistent parametric performance across manufacturing lots.
Supply support for ADP2108AUJZ-1.0-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.
The ADP2108 series was developed specifically for ultra-compact, battery-operated portable electronics requiring high-efficiency, low-quiescent-current DC-DC conversion in minimal PCB area - targeting next-generation wearables, medical sensors, and handheld computing.
FAQ
What is the output voltage tolerance of the ADP2108AUJZ-1.0-R7 over temperature and load?
The ADP2108AUJZ-1.0-R7 guarantees ±2.5% output voltage accuracy across 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 includes initial tolerance, line regulation, load regulation, and thermal drift - verified per Analog Devices' Rev. H datasheet Table 1.
Does the ADP2108AUJZ-1.0-R7 require external feedback resistors?
No. The ADP2108AUJZ-1.0-R7 is a fixed-output variant with the feedback node (FB) internally connected to a precision 1.0 V reference. External resistors are neither required nor supported - simplifying layout and eliminating resistor tolerance errors that affect regulation accuracy in adjustable versions like ADP2108AUJZ-1.2-R7.
What is the minimum recommended input capacitor for stable operation of the ADP2108AUJZ-1.0-R7?
Analog Devices specifies a minimum 4.7 µF X5R/X7R ceramic capacitor rated for ≥6.3 V, placed as close as possible to the VIN and GND balls. This value ensures adequate input filtering, limits peak input current stress, and maintains stability during high-frequency switching transients - confirmed in Figure 1 and Applications Information section of the ADP2108 datasheet.
Can the ADP2108AUJZ-1.0-R7 operate with a 1.2 V input supply?
No. The ADP2108AUJZ-1.0-R7 has an absolute minimum input voltage of 2.3 V and an undervoltage lockout (UVLO) threshold of 2.15 V (falling). Operation below 2.3 V violates Absolute Maximum Ratings and will cause immediate shutdown. For sub-2.3 V inputs, a different regulator architecture (e.g., buck-boost) is required.
How does thermal performance differ between the WLCSP and TSOT packages of the ADP2108?
The ADP2108AUJZ-1.0-R7 in WLCSP-5 has a θJA of 105°C/W (JEDEC 2S2P board), while the TSOT-5 version measures 170°C/W. This 65°C/W difference means the WLCSP package delivers significantly lower junction temperature rise under identical load and ambient conditions - critical for thermally constrained handheld and wearable applications.
ADP2108AUJZ-1.0-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):
- 1V
- 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-1.0-R7 FAQ
1.How can I place an order for ADP2108AUJZ-1.0-R7 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADP2108AUJZ-1.0-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-1.0-R7 reliable?
The price and inventory of ADP2108AUJZ-1.0-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-1.0-R7 is usually 5 days.
3.What payment methods are accepted for ADP2108AUJZ-1.0-R7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADP2108AUJZ-1.0-R7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADP2108AUJZ-1.0-R7?
ADP2108AUJZ-1.0-R7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADP2108AUJZ-1.0-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-1.0-R7?
For technical support, including ADP2108AUJZ-1.0-R7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADP2108AUJZ-1.0-R7 requirements.
6.How does Aetrix verify that ADP2108AUJZ-1.0-R7 is sourced from the original manufacturer or authorized distributors?
All ADP2108AUJZ-1.0-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-1.0-R7 meets industry standards.
7.What is the process for return or replacement of ADP2108AUJZ-1.0-R7?
All ADP2108AUJZ-1.0-R7 units undergo pre-shipment inspection (PSI). If there is an issue with ADP2108AUJZ-1.0-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-1.0-R7 part is unused and in its original packaging.
Return procedure for ADP2108AUJZ-1.0-R7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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