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Analog Devices Inc. ADP2504ACPZ-2.8-R7
- Part No.:
- ADP2504ACPZ-2.8-R7
- Manufacturer:
- Analog Devices Inc.
- Package:
- 10-VFDFN Exposed Pad, CSP
- Datasheet:
-
ADP2504ACPZ-2.8-R7.pdf
- Description:
- IC REG BUCK BST 2.8V 1A 10LFCSP
- Quantity:
- Payment:
- Shipping:
Inventory:3,564
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Product details
Overview
ADP2504ACPZ-2.8-R7 from Analog Devices is a 1000 mA, 2.5 MHz synchronous buck-boost DC-to-DC converter in a 3 mm × 3 mm LFCSP package, delivering fixed 2.8 V output from 2.3 V–5.5 V input. It features seamless buck/boost/buck-boost mode transition, 38 µA quiescent current, and integrated power switches for compact battery-powered systems like USB devices and portable audio players.
For engineers reviewing the ADP2504ACPZ-2.8-R7 datasheet, ADP2504ACPZ-2.8-R7 pinout, ADP2504ACPZ-2.8-R7 application, or ADP2504ACPZ-2.8-R7 equivalent, key selection criteria include its 2.8 V fixed output, 1 A load capability, 2.5 MHz switching frequency enabling 1.5 µH inductors, thermal shutdown at 150°C, and SYNC-controlled forced-PWM/PSM/synchronization modes.
Technical Context
The ADP2504ACPZ-2.8-R7 implements synchronous average current-mode control with internal N- and P-channel MOSFETs (150 mΩ each), supporting buck, boost, and buck-boost topologies based on VIN relative to VOUT. Its seamless mode transition occurs automatically within ±10% of 2.8 V input range, maintaining regulation and minimizing inductor current ripple.
It integrates soft start (200 µs ramp), undervoltage lockout (2.20 V rising threshold), overtemperature protection (150°C trip), short-circuit protection (1.3–2.0 A switch current limit), and reverse current limiting (1.1 A). The SYNC pin enables three operational modes: PSM (low), forced PWM (high), or external clock synchronization (2.2–2.8 MHz).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.8 V - eliminates external feedback resistors and ensures stable rail for low-voltage logic or RF circuitry. |
| Max Output Current | 1000 mA - supports higher-power peripherals such as USB OTG ports or multi-sensor modules without external current boosting. |
| Switching Frequency | 2.5 MHz (typ) - enables use of small 1.5 µH inductors and reduces output capacitor size while minimizing EMI in space-constrained layouts. |
| Input Voltage Range | 2.3 V to 5.5 V - compatible with single Li+/LiPo cells, dual alkaline/NiMH, USB 5 V, and PCMCIA sources without pre-regulation. |
| Quiescent Current | 38 µA (typ) - extends battery life in always-on or low-duty-cycle applications like remote sensors or wearable standby modes. |
| Shutdown Current | 0.2 µA (max) - isolates input from output during logic-controlled shutdown, preventing battery drain in powered-off states. |
| Thermal Shutdown | 150°C with 25°C hysteresis - protects against sustained overload or poor PCB thermal design without requiring external thermal monitoring. |
Pinout & Package
ADP2504ACPZ-2.8-R7 uses a 10-lead, 3 mm × 3 mm LFCSP (QFN) package with exposed pad (EP) thermally connected to PGND. The compact 1 mm height profile supports ultra-thin portable designs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VOUT | Regulated output node | Delivers fixed 2.8 V; requires local 22 µF ceramic capacitor to PGND for stability and transient response. |
| SW2 | Buck-boost power switch node (input-side) | Connects to inductor; carries high di/dt - must use short, wide trace to minimize EMI and voltage spikes. |
| PGND | Power ground return | Common return for input/output capacitors and exposed pad; must be solid copper plane with multiple vias to inner layers. |
| SW1 | Buck-boost power switch node (output-side) | Connects to same inductor as SW2; forms switching node pair critical for buck-boost topology operation. |
| PVIN | Main power input to switches | Accepts 2.3–5.5 V; requires 10 µF X5R ceramic capacitor placed adjacent to pin for high-frequency decoupling. |
| EN | Enable/shutdown control input | Active-high logic; pulling low disables regulator and reduces input current to ≤1 µA - used for system-level power sequencing. |
| SYNC | Mode selection and clock synchronization input | Configures PSM (low), forced PWM (high), or external sync (2.2–2.8 MHz square wave); enables noise-sensitive system timing control. |
| VIN | Analog supply for internal circuitry | Must be connected to same source as PVIN or filtered version; powers error amplifier, reference, and logic blocks independently of power switches. |
| AGND | Analog ground reference | Separate from PGND to reduce noise coupling into feedback and reference circuits; tied to PGND only at single point near EP. |
| FB | Feedback input | Internally connected to 2.8 V output divider; not user-accessible on fixed-output variants - simplifies layout and eliminates resistor tolerance errors. |
Key Features
| Feature | Design Value |
|---|---|
| Seamless buck/boost/buck-boost transition | Maintains regulation across full input range (2.3–5.5 V) without mode-hopping artifacts or output glitches - essential for battery voltage sag during discharge. |
| Load disconnect in boost configuration | Isolates output from input during shutdown via internal PMOS switch - prevents backfeed and enables true load isolation in USB-powered systems. |
| Internal compensation | Eliminates need for external compensation network - reduces BOM count and layout sensitivity while ensuring stability with recommended 1.5 µH inductor and 22 µF output cap. |
| Soft start (200 µs) | Limits inrush current to <600 mA with 20 µF output capacitor - prevents input rail collapse and avoids false triggering of upstream overcurrent protection. |
| Three SYNC operation modes | Enables system-level noise management: PSM for max battery life, forced PWM for EMI predictability, and external sync for clock domain alignment in multi-rail SoC designs. |
Applications
| Wireless Handsets | Digital Cameras |
|---|---|
|
Use Scenario: Powering baseband processor I/O rails and camera interface circuitry from a single-cell Li+ battery whose voltage drops from 4.2 V to 3.0 V during discharge. IC Role / Device Role / Timing Role: Buck-boost regulator maintaining stable 2.8 V supply regardless of battery state, replacing discrete LDO + boost solutions. Use Value: Eliminates voltage brownouts during high-current bursts (e.g., autofocus motor activation), ensuring reliable sensor data capture and transmission. |
Use Scenario: Supplying image sensor analog front-end and memory interface in compact digital cameras powered by AA/AAA batteries or USB. IC Role / Device Role / Timing Role: Primary 2.8 V power rail generator with fast transient response to handle burst-mode sensor readout and flash charging cycles. Use Value: Delivers clean, regulated 2.8 V with <10 mV ripple under 500 mA load steps - preserves ADC SNR and prevents image banding artifacts. |
| USB-Powered Devices | Miniature Hard Disk Drives |
|
Use Scenario: Providing 2.8 V logic supply to USB-C peripheral controllers, Type-C port managers, or embedded microcontrollers in bus-powered accessories. IC Role / Device Role / Timing Role: Input-capable buck-boost converter accepting 4.75–5.25 V USB input while delivering precise 2.8 V output with load disconnect. Use Value: Enables true USB enumeration compliance by isolating downstream circuitry during suspend - meets USB 2.0/3.0 power budget requirements. |
Use Scenario: Generating 2.8 V for spindle motor driver logic and buffer memory in 1.8-inch or smaller HDDs powered from 5 V USB or SATA sources. IC Role / Device Role / Timing Role: High-efficiency intermediate rail converter operating across wide input transients caused by motor startup surges. Use Value: Sustains 2.8 V output during 500 mA load transients with <50 µs recovery - prevents buffer underrun and maintains continuous data streaming. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar buck-boost converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS63020DSJR | 2.5 V–5.5 V input, adjustable 1.2–5.5 V output, 2 A max, 2.4 MHz switching, 22 µA IQ | Requires external feedback resistors; lacks true load disconnect in boost mode | Preferred when adjustable output or higher current is needed; less suitable for fixed 2.8 V systems requiring minimal BOM. |
| MAX77827BEWC+T | 2.5 V–5.5 V input, fixed 2.8 V output, 1.2 A max, 2.2 MHz switching, 40 µA IQ, integrated load switch | Includes dedicated load switch with controlled slew rate; no SYNC pin for external clock sync | Best for designs needing programmable load enable/disable timing; less optimal where EMI-sensitive sync alignment is required. |
Compared with TPS63020DSJR and MAX77827BEWC+T, the ADP2504ACPZ-2.8-R7 offers unique combination of fixed 2.8 V output with zero external components, true load disconnect, and three-mode SYNC control - making it optimal for space-constrained, noise-sensitive, and battery-life-critical 2.8 V rail generation.
Availability
ADP2504ACPZ-2.8-R7 is available at Aetrix Electronics and suitable for wireless handsets, USB-powered peripherals, and portable imaging systems requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for ADP2504ACPZ-2.8-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 is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and consumer markets since 1965.
The ADP2504ACPZ-2.8-R7 belongs to Analog Devices' ADP2503/ADP2504 family of high-efficiency buck-boost converters designed specifically for battery-powered portable electronics where input voltage varies across the output rail and board area is severely constrained.
FAQ
What is the maximum output current capability of the ADP2504ACPZ-2.8-R7?
The ADP2504ACPZ-2.8-R7 delivers up to 1000 mA continuous output current under typical conditions (TA = 25°C, VIN = 3.6 V, VOUT = 2.8 V). Its switch current limit is specified from 1.3 A to 2.0 A, allowing robust handling of transient loads. Derating applies above 85°C ambient or with poor PCB thermal design - consult thermal resistance (θJA = 84°C/W) and junction temperature limits (150°C) for high-power applications.
Does the ADP2504ACPZ-2.8-R7 require external feedback resistors to set the output voltage?
No, the ADP2504ACPZ-2.8-R7 is a fixed-output variant with internal resistor divider configured for 2.8 V. The FB pin is internally connected and not accessible for external programming. This eliminates component count, layout complexity, and resistor tolerance errors - unlike the adjustable ADP2504ACPZ-R7 model which requires external R1/R2.
How does the SYNC pin function on the ADP2504ACPZ-2.8-R7?
The SYNC pin on the ADP2504ACPZ-2.8-R7 supports three distinct modes: pulled low enables power save mode (PSM) for light-load efficiency; driven high forces fixed 2.5 MHz PWM operation for predictable EMI; and driven with a 2.2–2.8 MHz square wave synchronizes switching to an external clock - critical for noise-sensitive RF or audio subsystems.
What protection features are integrated into the ADP2504ACPZ-2.8-R7?
The ADP2504ACPZ-2.8-R7 integrates overtemperature shutdown (150°C trip, 25°C hysteresis), short-circuit protection (1.3–2.0 A switch current limit), reverse current limiting (1.1 A), undervoltage lockout (2.20 V rising threshold), and soft-start (200 µs ramp). These features eliminate need for external protection circuitry and ensure safe operation across battery discharge, load faults, and thermal stress.
Can the ADP2504ACPZ-2.8-R7 operate with input voltage below 2.8 V?
Yes, the ADP2504ACPZ-2.8-R7 operates as a boost converter when VIN is below 2.8 V (down to 2.3 V minimum), and as a buck converter when VIN exceeds 2.8 V (up to 5.5 V maximum). Between ~2.5 V and ~3.1 V, it automatically enters buck-boost mode - seamlessly transitioning between topologies without output interruption or regulation loss.
ADP2504ACPZ-2.8-R7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 10-VFDFN Exposed Pad, CSP
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Function:
- Step-Up/Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck-Boost
- Output Type:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.3V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 2.8V
- Voltage - Output (Max):
- -
- Current - Output:
- 1A
- Frequency - Switching:
- 2.5MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-LFCSP-WD (3x3)
ADP2504ACPZ-2.8-R7 FAQ
1.How can I place an order for ADP2504ACPZ-2.8-R7 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADP2504ACPZ-2.8-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 ADP2504ACPZ-2.8-R7 reliable?
The price and inventory of ADP2504ACPZ-2.8-R7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADP2504ACPZ-2.8-R7 is usually 5 days.
3.What payment methods are accepted for ADP2504ACPZ-2.8-R7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADP2504ACPZ-2.8-R7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADP2504ACPZ-2.8-R7?
ADP2504ACPZ-2.8-R7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADP2504ACPZ-2.8-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 ADP2504ACPZ-2.8-R7?
For technical support, including ADP2504ACPZ-2.8-R7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADP2504ACPZ-2.8-R7 requirements.
6.How does Aetrix verify that ADP2504ACPZ-2.8-R7 is sourced from the original manufacturer or authorized distributors?
All ADP2504ACPZ-2.8-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 ADP2504ACPZ-2.8-R7 meets industry standards.
7.What is the process for return or replacement of ADP2504ACPZ-2.8-R7?
All ADP2504ACPZ-2.8-R7 units undergo pre-shipment inspection (PSI). If there is an issue with ADP2504ACPZ-2.8-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 ADP2504ACPZ-2.8-R7 part is unused and in its original packaging.
Return procedure for ADP2504ACPZ-2.8-R7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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