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Analog Devices Inc. ADP2504ACPZ-3.3-R7
- Part No.:
- ADP2504ACPZ-3.3-R7
- Manufacturer:
- Analog Devices Inc.
- Package:
- 10-VFDFN Exposed Pad, CSP
- Datasheet:
-
ADP2504ACPZ-3.3-R7.pdf
- Description:
- IC REG BUCK BST 3.3V 1A 10LFCSP
- Quantity:
- Payment:
- Shipping:
Inventory:1,539
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Product details
Overview
ADP2504ACPZ-3.3-R7 from Analog Devices is a 1 A, 2.5 MHz synchronous buck-boost DC-DC converter in a 3 mm × 3 mm LFCSP package, delivering fixed 3.3 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 portable power rails in USB-powered devices and wireless handsets.
For engineers reviewing the ADP2504ACPZ-3.3-R7 datasheet, ADP2504ACPZ-3.3-R7 pinout, ADP2504ACPZ-3.3-R7 application, or ADP2504ACPZ-3.3-R7 equivalent, this page delivers verified technical context, real-world design meaning of key specs, validated pin functions, confirmed alternatives with functional distinctions, and supply-ready availability details - all grounded in Analog Devices' Rev. F datasheet and ordering guide.
Technical Context
The ADP2504ACPZ-3.3-R7 implements synchronous average current-mode control with internal N- and P-channel MOSFETs (150 mΩ each), enabling operation across buck, boost, and buck-boost modes depending on VIN vs. VOUT relationship. Its 2.5 MHz switching frequency supports 1.5 µH inductors and minimizes output ripple without external compensation.
It integrates soft start (200 µs ramp), undervoltage lockout (2.20 V rising threshold), thermal shutdown (150°C), 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 for light-load efficiency, forced PWM for EMI-sensitive systems, and external clock synchronization (2.2–2.8 MHz).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 1000 mA maximum continuous - supports high-current peripherals like USB PHYs or RF front-ends without external current boosting. |
| Input Voltage Range | 2.3 V to 5.5 V - compatible with single Li-ion/Li-poly, dual alkaline/NiMH, USB 5 V, and PCMCIA sources. |
| Fixed Output Voltage | 3.3 V ±2% initial accuracy - eliminates need for external feedback resistors and ensures stable I/O rail for microcontrollers and sensors. |
| Switching Frequency | 2.5 MHz typical (2.1–2.9 MHz range) - enables use of small 1.5 µH inductors and reduces solution footprint by >40% vs. 1 MHz converters. |
| Quiescent Current | 38 µA typical - extends battery life in always-on subsystems such as Bluetooth LE receivers or sensor wake-up circuits. |
| Shutdown Current | 0.2 µA typical - isolates input from output during logic-controlled shutdown, preventing battery drain in standby. |
| Thermal Shutdown | 150°C junction threshold with 25°C hysteresis - protects against sustained overload or poor PCB thermal design without latch-up. |
Pinout & Package
ADP2504ACPZ-3.3-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 (Pin 1) | Regulated output node | Delivers fixed 3.3 V to load; requires low-ESR ceramic capacitor (≥22 µF) between VOUT and PGND for stability and transient response. |
| SW2 (Pin 2) | Boost-side switch node | Connects to inductor's "input side"; carries high di/dt during boost operation - must be routed with short, wide trace to minimize EMI. |
| PGND (Pin 3) | Power ground return | Common return for input/output capacitors and exposed pad; must connect to solid PGND plane to reduce noise and improve thermal dissipation. |
| SW1 (Pin 4) | Buck-side switch node | Connects to inductor's "output side"; active during buck mode - shares same inductor as SW2 but opposite phase timing. |
| PVIN (Pin 5) | Main power input to switches | Supplies internal power switches only; requires 10 µF X5R ceramic capacitor placed adjacent to PVIN and PGND for high-frequency decoupling. |
| EN (Pin 6) | Enable/shutdown control | Logic-high (>1.2 V) enables regulation with soft-start; logic-low (<0.4 V) disables device and reduces input current to 0.2 µA. |
| SYNC (Pin 7) | Mode selection & synchronization | Low = PSM mode; high = forced PWM; AC signal (2.2–2.8 MHz) = external sync - critical for noise-sensitive RF or audio subsystems. |
| VIN (Pin 8) | Analog supply for control circuitry | Provides bias for internal error amplifier and logic; must be decoupled separately from PVIN if noisy input sources are used. |
| AGND (Pin 9) | Analog ground reference | Reference for FB, EN, SYNC, and internal analog blocks; should be tied to PGND at single point near IC to avoid ground bounce. |
| FB (Pin 10) | Feedback input | Internally connected to 3.3 V output in fixed-version parts; not user-accessible - no external resistor divider required. |
| EP | Exposed thermal pad | Must be soldered to PGND plane via ≥4 thermal vias to achieve θJA = 84°C/W and sustain full 1 A load at +85°C ambient. |
Key Features
| Feature | Design Value |
|---|---|
| Seamless buck-boost mode transition | Automatically shifts between buck, boost, and buck-boost based on VIN/VOUT ratio - maintains regulation without output glitch during battery voltage sag or surge. |
| Load disconnect in boost configuration | Isolates output from input during shutdown - prevents backfeed into depleted batteries or shared power rails in multi-rail systems. |
| Internal compensation | Eliminates external compensation network - reduces BOM count and layout sensitivity while maintaining stability across 2.3–5.5 V input and 10–1000 mA load range. |
| Soft start (200 µs) | Limits inrush current to <600 mA with 20 µF output cap - avoids brownout on weak sources like coin-cell or USB ports during power-up. |
| Three SYNC operating modes | Enables system-level EMI management: PSM for longest battery life, forced PWM for deterministic timing, and external sync for clock domain alignment. |
Applications
| Wireless Handset Power Management | Digital Camera Core Rail |
|---|---|
Use Scenario: Powers baseband processor and RF transceiver from single Li-ion cell as voltage drops from 4.2 V to 2.8 V during discharge. IC Role / Device Role / Timing Role: Buck-boost regulator maintaining stable 3.3 V I/O rail independent of battery state - handles both buck (VIN > VOUT) and boost (VIN < VOUT) seamlessly. Use Value: Eliminates need for separate buck and boost converters, reducing board area by 35% and component count by 4+ passive devices. |
Use Scenario: Supplies image sensor and ISP core logic in compact digital camera where space and battery life are critical constraints. IC Role / Device Role / Timing Role: Primary 3.3 V power stage with fast load transient response (<50 µs recovery) to handle burst-mode sensor readout currents up to 800 mA. Use Value: 38 µA quiescent current extends standby time; 2.5 MHz switching allows use of 1.5 µH inductor fitting within 3.5 mm² footprint. |
| USB-Powered Portable Audio | Miniature Hard Disk Drive (HDD) Supply |
Use Scenario: Regulates clean 3.3 V rail for DAC, headphone amp, and Bluetooth audio SoC from noisy 5 V USB source. IC Role / Device Role / Timing Role: Noise-immune buck-boost converter using forced PWM mode (SYNC high) to avoid interference with 24-bit audio path. Use Value: Fixed 2.5 MHz operation suppresses switching harmonics outside audio band; internal soft start prevents pop/click at power-on. |
Use Scenario: Provides regulated 3.3 V motor and logic supply for 1.8-inch HDD in portable media player, surviving cold-start at −20°C. IC Role / Device Role / Timing Role: High-reliability power converter with undervoltage lockout (2.20 V) and thermal shutdown (150°C) to prevent data corruption during thermal stress. Use Value: 1000 mA output sustains spindle motor startup surge; 1 mm height fits tight mechanical envelope behind HDD assembly. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar buck-boost regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS63020DSJR | 600 mA output, 2.5 MHz, 2.5 V–5.5 V input, 3.3 V fixed option; lacks true load disconnect and has higher 75 µA IQ. | Suitable for lower-current applications where load isolation is not required - e.g., MCU-only subsystems without peripheral hot-swap. | Select TPS63020DSJR only when 600 mA suffices and cost sensitivity outweighs need for 1 A capability and load disconnect. |
| MAX77827BEWC+T | 1.2 A output, 2.5 MHz, 2.5 V–5.5 V input, adjustable only (no 3.3 V fixed variant); includes I²C programmability and power-good flag. | Preferred for systems requiring dynamic voltage scaling or fault reporting - e.g., adaptive SoC power domains with PMIC coordination. | Choose MAX77827BEWC+T when firmware-controlled output adjustment or system-level power sequencing is mandatory. |
Compared with TPS63020DSJR and MAX77827BEWC+T, the ADP2504ACPZ-3.3-R7 uniquely combines 1 A output, fixed 3.3 V, true load disconnect, and 38 µA quiescent current in a 3 mm × 3 mm package - making it optimal for space-constrained, battery-sensitive applications where simplicity and reliability are prioritized over programmability.
Availability
ADP2504ACPZ-3.3-R7 is available at Aetrix Electronics and suitable for wireless handsets, portable audio players, and USB-powered embedded systems requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for ADP2504ACPZ-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, serving industrial, automotive, communications, and consumer markets since 1965.
The ADP2504ACPZ-3.3-R7 belongs to Analog Devices' high-efficiency, low-IQ buck-boost converter family designed specifically for battery-powered portable electronics where input voltage varies widely and board space is severely constrained.
FAQ
What is the maximum continuous output current of the ADP2504ACPZ-3.3-R7?
The ADP2504ACPZ-3.3-R7 delivers up to 1000 mA continuous output current under typical conditions (TA = 25°C, VIN = 3.6 V, VOUT = 3.3 V). Derating applies above +85°C ambient due to thermal limits; full 1 A load requires proper PCB thermal design with EP-to-PGND vias per Analog Devices' layout guidelines.
Does the ADP2504ACPZ-3.3-R7 require external feedback resistors to set its 3.3 V output?
No. The ADP2504ACPZ-3.3-R7 is a fixed-output variant - the 3.3 V regulation is achieved internally via factory-trimmed feedback reference. Pin 10 (FB) is internally connected to VOUT and must not be externally modified; no resistor divider is needed or supported.
How does the ADP2504ACPZ-3.3-R7 handle input voltage transitions across the 3.3 V output level?
The ADP2504ACPZ-3.3-R7 automatically transitions between buck, boost, and buck-boost modes as VIN crosses VOUT. When VIN > 3.3 V, it operates in buck mode; when VIN < 3.3 V, it switches to boost; and near VIN ≈ 3.3 V, it interleaves both topologies to maintain regulation without dropout or glitch.
Can the ADP2504ACPZ-3.3-R7 be synchronized to an external clock source?
Yes. Driving the SYNC pin with a 2.2–2.8 MHz square wave synchronizes the ADP2504ACPZ-3.3-R7's switching frequency to that external clock. This feature is essential for noise-sensitive applications like audio codecs or RF receivers where deterministic switching harmonics must be avoided.
What protection features are integrated into the ADP2504ACPZ-3.3-R7?
The ADP2504ACPZ-3.3-R7 includes overtemperature shutdown (150°C), 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). All protections are fully autonomous and require no external components.
ADP2504ACPZ-3.3-R7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 10-VFDFN Exposed Pad, CSP
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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):
- 3.3V
- 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-3.3-R7 FAQ
1.How can I place an order for ADP2504ACPZ-3.3-R7 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADP2504ACPZ-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 ADP2504ACPZ-3.3-R7 reliable?
The price and inventory of ADP2504ACPZ-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 ADP2504ACPZ-3.3-R7 is usually 5 days.
3.What payment methods are accepted for ADP2504ACPZ-3.3-R7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADP2504ACPZ-3.3-R7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADP2504ACPZ-3.3-R7?
ADP2504ACPZ-3.3-R7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADP2504ACPZ-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 ADP2504ACPZ-3.3-R7?
For technical support, including ADP2504ACPZ-3.3-R7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADP2504ACPZ-3.3-R7 requirements.
6.How does Aetrix verify that ADP2504ACPZ-3.3-R7 is sourced from the original manufacturer or authorized distributors?
All ADP2504ACPZ-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 ADP2504ACPZ-3.3-R7 meets industry standards.
7.What is the process for return or replacement of ADP2504ACPZ-3.3-R7?
All ADP2504ACPZ-3.3-R7 units undergo pre-shipment inspection (PSI). If there is an issue with ADP2504ACPZ-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 ADP2504ACPZ-3.3-R7 part is unused and in its original packaging.
Return procedure for ADP2504ACPZ-3.3-R7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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