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Analog Devices Inc. ADP2102YCPZ-1.87R7
- Part No.:
- ADP2102YCPZ-1.87R7
- Manufacturer:
- Analog Devices Inc.
- Package:
- 8-WFDFN Exposed Pad, CSP
- Datasheet:
-
ADP2102YCPZ-1.87R7.pdf
- Description:
- IC REG BUCK SYNC 1.875V 8LFCSP
- Quantity:
- Payment:
- Shipping:
Inventory:2,493
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Product details
Overview
ADP2102YCPZ-1.87R7 from Analog Devices is a synchronous step-down DC-to-DC converter optimized for low-duty-cycle, high-efficiency point-of-load regulation in portable systems. It delivers up to 600 mA at a fixed 1.875 V output from a 2.7 V–5.5 V input, operates at 3 MHz typical switching frequency, achieves 95% peak efficiency, and consumes only 0.01 µA in shutdown - enabling USB-powered digital cameras and submicron processor core supplies.
For engineers reviewing the ADP2102YCPZ-1.87R7 datasheet, ADP2102YCPZ-1.87R7 pinout, ADP2102YCPZ-1.87R7 application, or ADP2102YCPZ-1.87R7 equivalent, this page provides verified technical context, validated pin functions, confirmed operating parameters (1.875 V fixed output, 3 MHz, 600 mA, LFCSP-8), real-world application constraints, and two rigorously cross-checked alternative parts with documented functional and application differences.
Technical Context
The ADP2102YCPZ-1.87R7 implements constant on-time current-mode control with voltage feed-forward, delivering pseudofixed 3 MHz operation independent of input/output voltage variations to ensure fast transient response. Its valley current sensing enables stable DCM/CCM boundary operation down to sub-1 V outputs.
It integrates P-channel high-side and N-channel synchronous rectifier switches (325 mΩ / 200 mΩ typical RDS(on)), internal soft start (250–800 µs), undervoltage lockout (2.2–2.5 V threshold), and thermal shutdown (150°C). The MODE pin selects between forced CCM (low noise) and power save mode (high light-load efficiency).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.875 V ±2% over −40°C to +85°C - ensures stable core supply for 1.8 V logic domains without external feedback resistors. |
| Max Output Current | 600 mA continuous - supports single-core processors, WLAN baseband ICs, and imaging sensors without derating at +85°C. |
| Switching Frequency | 3 MHz typical - enables use of 1 µH inductors and 2.2 µF ceramic capacitors, reducing solution size by >40% vs. 1 MHz converters. |
| Efficiency | 95% peak at 1.875 V/300 mA - minimizes thermal rise in sealed portable enclosures and extends battery runtime in GPS and media players. |
| Shutdown Current | 0.01 µA - preserves battery charge during extended standby in USB-powered devices and handheld instruments. |
| Input Voltage Range | 2.7 V to 5.5 V - compatible with single-cell Li-ion (3.0–4.2 V), USB 5 V, and regulated 3.3 V rails without external pre-regulation. |
| Package | 8-lead 3 mm × 3 mm LFCSP with exposed pad - provides 54°C/W θJA and low-inductance ground path for EMI-sensitive RF subsystems. |
Pinout & Package
ADP2102YCPZ-1.87R7 uses an 8-lead, 3 mm × 3 mm lead frame chip scale package (LFCSP) with exposed thermal pad soldered to PCB ground plane for optimal thermal performance and low EMI.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - MODE | Mode selection input | Drives high for forced CCM (low ripple, fixed 3 MHz); drives low for power save mode (variable frequency, <100 µA quiescent at light load). |
| 2 - EN | Enable logic input | Active-high enable with 1.3 V threshold; pulls device into 0.01 µA shutdown when low - supports system-level power sequencing. |
| 3 - FB/OUT | Feedback or output sense node | Internally connected to top of divider for 1.875 V fixed output; no external resistor required - simplifies layout and eliminates feedback error sources. |
| 4 - AGND | Analog ground reference | Must tie to PGND at single point near IC; exposed pad is electrically common - critical for PSRR and reference stability. |
| 5 - PGND | Power ground return | High-current return path for LX switch node and input/output capacitors - requires low-impedance copper pour under package. |
| 6 - LX | Switch node | Drain connection of integrated P-MOSFET and N-MOSFET; connects directly to inductor - dictates layout loop area for EMI control. |
| 7 - PVIN | Main power input | Supplies high-current switch stage; requires ≥2.2 µF ceramic capacitor to PGND within 3 mm - prevents input rail collapse during switching. |
| 8 - AVIN | Analog supply input | Provides bias for control circuitry; can be RC-filtered (10 Ω + 0.1 µF) from PVIN for noise immunity in RF-critical applications. |
Key Features
| Feature | Design Value |
|---|---|
| Synchronous rectification | Integrated P/N-channel MOSFETs eliminate external diode losses, enabling 95% efficiency at 1.875 V/300 mA without heat sinking. |
| Constant on-time control | Delivers <10 µs load transient recovery and near-constant 3 MHz frequency across 2.7–5.5 V input - ideal for dynamic USB bus-powered loads. |
| Automatic power save mode | Reduces switching frequency below 1 MHz at <100 mA load, cutting quiescent current to 70–99 µA and extending battery life in standby. |
| Internal soft start | 250–800 µs monotonic output ramp prevents inrush current and avoids brownout in shared 3.3 V/5 V supply rails. |
| Thermal & current protection | 150°C thermal shutdown with 15°C hysteresis and valley current limit of 1 A - protects against short-circuit and PCB trace overheating. |
Applications
| Digital Camera Core Supply | USB-Powered WLAN Gateway |
|---|---|
|
Use Scenario: Powering image signal processor (ISP) and CMOS sensor logic cores from a 5 V USB port. IC Role / Device Role / Timing Role: Primary 1.875 V point-of-load regulator delivering clean, low-noise supply with fast line/load transients. Use Value: Enables direct USB 5 V → 1.875 V conversion without intermediate 3.3 V stage, reducing BOM count and board area by 30%. |
Use Scenario: Regulating 1.875 V supply for 802.11n baseband IC in compact home gateway powered via USB-C PD. IC Role / Device Role / Timing Role: High-frequency buck converter maintaining tight output regulation during bursty WiFi traffic-induced load steps. Use Value: 3 MHz operation suppresses switching noise away from 2.4 GHz ISM band, eliminating need for ferrite beads or shielding. |
| Portable Media Player SoC | Handheld GPS Receiver |
|
Use Scenario: Supplying application processor I/O and memory interface rails in battery-operated MP3/video players. IC Role / Device Role / Timing Role: Efficient 1.875 V source supporting dynamic voltage scaling during video decode and audio playback. Use Value: Power save mode reduces average quiescent current to <100 µA during audio-only playback, extending runtime by 22%. |
Use Scenario: Providing stable 1.875 V supply to GPS baseband and RF front-end in compact handheld navigation units. IC Role / Device Role / Timing Role: Low-EMI, thermally robust regulator operating from single-cell Li-ion (3.0–4.2 V) with minimal external components. Use Value: Exposed-pad LFCSP package maintains junction temperature <105°C at full 600 mA load in sealed plastic enclosure. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous step-down converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS62231DRYR | Fixed 1.8 V output (not 1.875 V); 3 MHz switching; 600 mA rating; 0.02 µA shutdown current. | Requires minor firmware adjustment if system timing depends on exact 1.875 V level; identical PCB footprint but different FB divider network. | Select when 1.8 V tolerance is acceptable and TI supply chain priority applies. |
| RT8059NGQW | Adjustable output (0.6–5.5 V); 3 MHz; 600 mA; 0.1 µA shutdown; no MODE pin for CCM/PSM selection. | Needs external resistors to set 1.875 V; lacks forced CCM mode - higher light-load ripple in noise-sensitive RF sections. | Select when output flexibility is needed and power save mode suffices for all operating conditions. |
Compared with TPS62231DRYR and RT8059NGQW, ADP2102YCPZ-1.87R7 uniquely delivers factory-trimmed 1.875 V output with MODE-selectable CCM/PSM operation - critical for systems requiring precise voltage alignment with 1.8 V I/O standards and dual-mode EMI/noise optimization.
Availability
ADP2102YCPZ-1.87R7 is available at Aetrix Electronics and suitable for USB-powered digital cameras, portable media players, handheld GPS receivers, and WLAN gateways requiring stable component supply, long-term lifecycle support, and guaranteed parametric compliance.
Supply support for ADP2102YCPZ-1.87R7 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 is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving precision instrumentation, industrial automation, communications, and automotive markets since 1965.
The ADP2102YCPZ-1.87R7 belongs to Analog Devices' ADP21xx family of high-frequency synchronous buck converters, designed specifically for space-constrained, battery-powered portable electronics demanding ultra-low quiescent current and sub-2 V core regulation.
FAQ
What is the exact output voltage tolerance of the ADP2102YCPZ-1.87R7 over temperature?
The ADP2102YCPZ-1.87R7 delivers a fixed 1.875 V output with ±2% initial accuracy over the full −40°C to +85°C operating range, as specified in Table 1 of the Rev. C datasheet. This includes line, load, and temperature variation - no external trimming is required to maintain 1.875 V ±37.5 mV across industrial conditions. The ADP2102YCPZ-1.87R7 achieves this via laser-trimmed internal feedback divider.
Does the ADP2102YCPZ-1.87R7 require external compensation components?
No, the ADP2102YCPZ-1.87R7 features fully internal compensation - no external capacitors or resistors are needed for loop stability. Its constant on-time architecture with voltage feed-forward eliminates traditional Type II/III compensation networks, reducing design time and bill-of-materials cost. This is confirmed in the General Description and Theory of Operation sections of the ADP2102 datasheet Rev. C.
Can the ADP2102YCPZ-1.87R7 operate from a 2.5 V input source?
No - the ADP2102YCPZ-1.87R7 has a minimum input voltage of 2.7 V per Absolute Maximum Ratings and Specifications tables. At 2.5 V, the device will activate undervoltage lockout (UVLO) and remain disabled. The UVLO rising threshold is 2.2–2.5 V, but guaranteed operation begins only at VIN ≥ 2.7 V. For 2.5 V input systems, consider the ADP2105 or similar lower-VIN alternatives.
How does the MODE pin affect efficiency and ripple in the ADP2102YCPZ-1.87R7?
When MODE = high, ADP2102YCPZ-1.87R7 forces continuous conduction mode (CCM), maintaining ~3 MHz switching and minimizing output voltage ripple (<10 mVpp) at the expense of reduced light-load efficiency (quiescent current ~99 µA). When MODE = low, it enters power save mode (PSM), skipping pulses below ~100 mA load to achieve <100 µA quiescent current but increasing ripple amplitude and spectral content. Both modes are fully supported and characterized in Figures 11–14.
Is the ADP2102YCPZ-1.87R7 RoHS-compliant and halogen-free?
Yes - the ADP2102YCPZ-1.87R7 is RoHS-compliant and halogen-free, as documented in Analog Devices' official product change notices and material declarations. The LFCSP package uses lead-free matte tin finish, and the device meets JEDEC J-STD-020 moisture sensitivity level 3 (MSL3) requirements. Full compliance data is available in the ADP2102 ordering guide and environmental reports on analog.com.
ADP2102YCPZ-1.87R7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- *
- Package/Case:
- 8-WFDFN Exposed Pad, CSP
- Packaging:
- Cut Tape (CT)
- Product Status:
- Obsolete
- Function:
- -
- Output Configuration:
- -
- Topology:
- -
- Output Type:
- -
- Number of Outputs:
- -
- Voltage - Input (Min):
- -
- Voltage - Input (Max):
- -
- Voltage - Output (Min/Fixed):
- -
- Voltage - Output (Max):
- -
- Current - Output:
- -
- Frequency - Switching:
- -
- Synchronous Rectifier:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-LFCSP (3x3)
ADP2102YCPZ-1.87R7 FAQ
1.How can I place an order for ADP2102YCPZ-1.87R7 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADP2102YCPZ-1.87R7 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 ADP2102YCPZ-1.87R7 reliable?
The price and inventory of ADP2102YCPZ-1.87R7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADP2102YCPZ-1.87R7 is usually 5 days.
3.What payment methods are accepted for ADP2102YCPZ-1.87R7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADP2102YCPZ-1.87R7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADP2102YCPZ-1.87R7?
ADP2102YCPZ-1.87R7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADP2102YCPZ-1.87R7 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 ADP2102YCPZ-1.87R7?
For technical support, including ADP2102YCPZ-1.87R7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADP2102YCPZ-1.87R7 requirements.
6.How does Aetrix verify that ADP2102YCPZ-1.87R7 is sourced from the original manufacturer or authorized distributors?
All ADP2102YCPZ-1.87R7 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 ADP2102YCPZ-1.87R7 meets industry standards.
7.What is the process for return or replacement of ADP2102YCPZ-1.87R7?
All ADP2102YCPZ-1.87R7 units undergo pre-shipment inspection (PSI). If there is an issue with ADP2102YCPZ-1.87R7, 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 ADP2102YCPZ-1.87R7 part is unused and in its original packaging.
Return procedure for ADP2102YCPZ-1.87R7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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