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Analog Devices Inc. ADP2108ACBZ-1.0-R7
- Part No.:
- ADP2108ACBZ-1.0-R7
- Manufacturer:
- Analog Devices Inc.
- Package:
- 5-WFBGA, WLCSP
- Datasheet:
-
ADP2108ACBZ-1.0-R7.pdf
- Description:
- IC REG BUCK 1V 600MA 5WLCSP
- Quantity:
- Payment:
- Shipping:
Inventory:1,835
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Product details
Overview
ADP2108ACBZ-1.0-R7 from Analog Devices is a fixed-output, 1.0 V, 600 mA synchronous step-down DC-DC converter with 3 MHz fixed-frequency PWM operation, 95% peak efficiency, and 18 μA quiescent current - designed for space-constrained portable electronics powered by single Li+/Li-polymer cells (2.3 V–5.5 V input).
For engineers reviewing the ADP2108ACBZ-1.0-R7 datasheet, ADP2108ACBZ-1.0-R7 pinout, ADP2108ACBZ-1.0-R7 application, or ADP2108ACBZ-1.0-R7 equivalent, key selection considerations include its WLCSP-5 package footprint, 100% duty-cycle low-dropout mode, internal soft start and compensation, power save mode transition at 80 mA, and thermal shutdown at 150°C.
Technical Context
The ADP2108ACBZ-1.0-R7 employs a high-speed current-mode PWM control architecture operating at a fixed 3 MHz switching frequency, enabling compact external component selection (e.g., 1 µH inductor, 4.7 µF input, 10 µF output capacitors). It integrates both PFET and NFET power switches with on-resistances of 320 mΩ and 300 mΩ respectively in the WLCSP package.
It supports seamless transition between PWM mode (for high-efficiency regulation under medium-to-heavy loads) and power save mode (hysteretic control with reduced switching activity below 80 mA), while maintaining stable 1.0 V output accuracy of ±2% across −40°C to +125°C junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.0 V ±2% - eliminates external feedback resistor network and ensures precise core voltage for low-power microcontrollers and RF ICs. |
| Max Output Current | 600 mA across full 2.3 V–5.5 V input range - supports sustained operation of ARM Cortex-M0/M3 cores and baseband processors. |
| Switching Frequency | 3.0 MHz (±0.5 MHz) - enables use of sub-1 mm height, 1 µH multilayer inductors and minimizes PCB area vs. 1–2 MHz alternatives. |
| Quiescent Current | 18 µA typical in active mode - extends battery runtime in always-on sensor nodes and standby subsystems. |
| Shutdown Current | 0.2 µA max - reduces system-level leakage during deep sleep, critical for multi-week coin-cell operation. |
| Input Voltage Range | 2.3 V to 5.5 V - compatible with single Li+/Li-Po, 3× alkaline/NiMH, USB 5 V, and PCMCIA rails without pre-regulation. |
| Thermal Shutdown | 150°C with 20°C hysteresis - protects silicon integrity during transient overloads or poor PCB thermal design. |
Pinout & Package
ADP2108ACBZ-1.0-R7 is packaged in a 5-ball, 0.8 mm × 0.8 mm, 0.4 mm pitch Wafer-Level Chip Scale Package (WLCSP) optimized for ultra-compact portable designs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN (Ball A1) | Power Input | Connects to 2.3–5.5 V source; requires ≥2.2 µF ceramic bypass capacitor placed adjacent to ball for EMI suppression and transient response. |
| GND (Ball A2) | Power Ground | Common reference for input/output capacitors and IC substrate; must be low-impedance connection to minimize noise coupling into FB and EN. |
| SW (Ball B) | Switch Node | Drain node of integrated PFET/NFET; connects directly to inductor; high dv/dt demands tight layout and minimal trace length to reduce EMI. |
| EN (Ball C1) | Enable Control | Logic-compatible input (VIH = 1.2 V min); pulling low disables regulator and reduces input current to ≤1 µA; no external pull-up required. |
| FB (Ball C2) | Feedback Input | Internally connected to 1.0 V reference; not externally accessible - confirms fixed-output configuration and eliminates feedback divider errors. |
Key Features
| Feature | Design Value |
|---|---|
| Internal Synchronous Rectification | Eliminates external Schottky diode, reducing conduction losses and board area - contributes to 95% peak efficiency at 200 mA. |
| 100% Duty-Cycle Low-Dropout Mode | Maintains regulation down to VIN − VOUT ≈ 200 mV (e.g., 1.2 V input → 1.0 V output), extending usable battery life near end-of-discharge. |
| Current-Mode PWM + Power Save Hybrid Control | Ensures fast load transient response (<10 µs recovery) under PWM mode and >90% efficiency at 10 mA via hysteretic light-load operation. |
| Integrated Soft Start | Linearly ramps output to 1.0 V in ~550 µs, limiting inrush current and preventing input rail collapse on weak sources like coin cells. |
| Undervoltage Lockout (UVLO) | Shuts down at VIN < 2.15 V (falling) to prevent brownout operation and deep battery discharge - restarts only after VIN rises above 2.25 V. |
Applications
| Wireless Handset Baseband | Digital Audio SoC Core Supply |
|---|---|
Use Scenario: Powering ARM9/ARM11 application processors and cellular modem subsystems in GSM/UMTS smartphones with single Li+ battery. IC Role / Device Role / Timing Role: Primary 1.0 V core regulator delivering up to 600 mA with <10 µs load transient response to handle burst-mode RF transmission. Use Value: Enables direct battery connection without intermediate LDO, preserving >90% efficiency across 10–600 mA load range and extending talk time by 12–18% vs. linear regulators. |
Use Scenario: Supplying DSP and audio codec logic cores in portable media players requiring low-noise, tightly regulated 1.0 V rails. IC Role / Device Role / Timing Role: Fixed-output buck converter providing clean, ripple-controlled 1.0 V supply synchronized to audio clock domains to minimize jitter-sensitive analog paths. Use Value: Achieves <15 mVpp output ripple with 10 µF X5R ceramic output cap, meeting SNR >95 dB requirements for 24-bit DACs without additional LC filtering. |
| Digital Camera Image Sensor Bias | GPS Navigation Unit MCU Core |
Use Scenario: Delivering stable 1.0 V bias to CMOS image sensor digital logic and interface circuitry in compact point-and-shoot cameras. IC Role / Device Role / Timing Role: High-efficiency, low-quiescent-current DC-DC converter supporting rapid on/off cycling during preview and capture modes. Use Value: Reduces average power draw by 65% vs. LDO-based solution during idle preview (15 µA vs. 45 µA), enabling longer battery life per charge cycle. |
Use Scenario: Powering 32-bit GPS baseband processors (e.g., u-blox MAX-M8) operating from automotive USB or internal Li-ion battery. IC Role / Device Role / Timing Role: Compact, thermally robust 1.0 V regulator sustaining 300 mA continuous load under 85°C ambient with minimal derating. Use Value: WLCSP-5 package and 105°C/W θJA enable reliable operation on 2-layer PCBs without heatsinks - validated for automotive cabin temperature profiles. |
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 | Fixed 1.0 V output, 600 mA, 3.6 MHz, 22 µA IQ, WSON-6 (1.5 × 1.5 mm) | Larger footprint (2.25× area), higher EMI due to 3.6 MHz edge rates, no 100% duty-cycle mode | Prefer when board layout allows larger package and higher-frequency EMI filtering is acceptable. |
| RT8059GJ6 | Adjustable output (0.6–5.5 V), 600 mA, 3 MHz, 25 µA IQ, WDFN-6 (1.2 × 1.2 mm) | Requires external resistive divider; lacks integrated UVLO hysteresis and thermal shutdown flag | Choose only if adjustable output voltage is required; adds BOM cost and layout complexity. |
Compared with TPS62231DRYR and RT8059GJ6, the ADP2108ACBZ-1.0-R7 offers the smallest footprint (0.64 mm²), lowest quiescent current (18 µA), and unique 100% duty-cycle capability - making it optimal for space- and battery-life-critical portable designs where fixed 1.0 V is sufficient.
Availability
ADP2108ACBZ-1.0-R7 is available at Aetrix Electronics and suitable for wireless handsets, portable media players, and GPS navigation units requiring stable component supply, long-term lifecycle support, and guaranteed WLCSP-5 packaging consistency.
Supply support for ADP2108ACBZ-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 and ISO 9001-certified manufacturing.
The ADP2108 series was developed specifically for ultra-compact, battery-powered portable electronics - emphasizing minimal external component count, sub-1 mm profile compatibility, and industry-leading light-load efficiency without sacrificing transient performance.
FAQ
What is the output voltage tolerance of the ADP2108ACBZ-1.0-R7 over temperature and load?
The ADP2108ACBZ-1.0-R7 delivers a fixed 1.0 V output with ±2% accuracy under PWM mode across −40°C to +125°C junction temperature and full 0–600 mA load range. This specification is guaranteed by design and verified in production test, ensuring consistent core voltage for sensitive digital loads without external trimming.
Does the ADP2108ACBZ-1.0-R7 require external compensation components?
No, the ADP2108ACBZ-1.0-R7 features fully internal compensation - no external RC networks or compensation capacitors are needed. This simplifies layout, reduces BOM count, and guarantees stability with the recommended 1 µH inductor and 10 µF ceramic output capacitor specified in the datasheet.
Can the ADP2108ACBZ-1.0-R7 operate with a 2.5 V input and still regulate 1.0 V output?
Yes, the ADP2108ACBZ-1.0-R7 supports input voltages from 2.3 V to 5.5 V and maintains regulation down to 2.3 V. At 2.5 V input, it operates in 100% duty-cycle mode when necessary, sustaining 1.0 V output even as the battery discharges - confirmed across all temperature and load conditions in the datasheet.
What is the maximum allowable PCB trace length between the ADP2108ACBZ-1.0-R7 SW pin and the inductor?
To maintain EMI performance and transient stability, the SW trace between ADP2108ACBZ-1.0-R7 Ball B and the inductor must be as short and wide as possible - Analog Devices recommends ≤2 mm length and ≥0.25 mm width with solid ground plane underneath. Longer traces increase ringing and reduce efficiency by up to 5%.
Is the ADP2108ACBZ-1.0-R7 RoHS-compliant and lead-free?
Yes, the ADP2108ACBZ-1.0-R7 is RoHS-compliant and lead-free per EU Directive 2011/65/EU and IPC/JEDEC J-STD-609. The WLCSP-5 package uses matte tin (Sn) finish on solder balls, with full material declarations available in Analog Devices' official compliance documentation.
ADP2108ACBZ-1.0-R7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 5-WFBGA, WLCSP
- 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:
- 5-WLCSP (1.02x1.45)
ADP2108ACBZ-1.0-R7 FAQ
1.How can I place an order for ADP2108ACBZ-1.0-R7 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADP2108ACBZ-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 ADP2108ACBZ-1.0-R7 reliable?
The price and inventory of ADP2108ACBZ-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 ADP2108ACBZ-1.0-R7 is usually 5 days.
3.What payment methods are accepted for ADP2108ACBZ-1.0-R7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADP2108ACBZ-1.0-R7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADP2108ACBZ-1.0-R7?
ADP2108ACBZ-1.0-R7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADP2108ACBZ-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 ADP2108ACBZ-1.0-R7?
For technical support, including ADP2108ACBZ-1.0-R7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADP2108ACBZ-1.0-R7 requirements.
6.How does Aetrix verify that ADP2108ACBZ-1.0-R7 is sourced from the original manufacturer or authorized distributors?
All ADP2108ACBZ-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 ADP2108ACBZ-1.0-R7 meets industry standards.
7.What is the process for return or replacement of ADP2108ACBZ-1.0-R7?
All ADP2108ACBZ-1.0-R7 units undergo pre-shipment inspection (PSI). If there is an issue with ADP2108ACBZ-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 ADP2108ACBZ-1.0-R7 part is unused and in its original packaging.
Return procedure for ADP2108ACBZ-1.0-R7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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