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Analog Devices Inc. ADP2503ACPZ-5.0-R7
- Part No.:
- ADP2503ACPZ-5.0-R7
- Manufacturer:
- Analog Devices Inc.
- Package:
- 10-VFDFN Exposed Pad, CSP
- Datasheet:
-
ADP2503ACPZ-5.0-R7.pdf
- Description:
- IC REG BUCK BST 5V 600MA 10LFCSP
- Quantity:
- Payment:
- Shipping:
Inventory:921
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Product details
Overview
ADP2503ACPZ-5.0-R7 from Analog Devices is a 600 mA, 2.5 MHz synchronous buck-boost DC-to-DC converter in a 3 mm × 3 mm LFCSP package, delivering fixed 5.0 V output from input voltages between 2.3 V and 5.5 V. It features seamless buck/boost/buck-boost mode transition, 38 µA quiescent current, internal compensation, and load disconnect capability-designed for space-constrained portable power rails in USB-powered devices and wireless handsets.
For engineers reviewing the ADP2503ACPZ-5.0-R7 datasheet, ADP2503ACPZ-5.0-R7 pinout, ADP2503ACPZ-5.0-R7 application, or ADP2503ACPZ-5.0-R7 equivalent, this page provides verified technical context, real-world design meaning of key specs, validated pin functions, application-specific implementation insights, and two confirmed alternative parts with documented functional and application-level differences.
Technical Context
The ADP2503ACPZ-5.0-R7 implements synchronous average current-mode control with automatic mode selection (buck, boost, or buck-boost) depending on VIN relative to VOUT. Its 2.5 MHz fixed-frequency PWM operation enables use of compact 1.5 µH inductors and minimizes output voltage ripple without external compensation components.
It integrates dual N-channel and P-channel power switches (150 mΩ RDS(on) each), soft-start (200 µs ramp), undervoltage lockout (2.20 V rising threshold), thermal shutdown (150°C), and three SYNC pin modes: PSM for light-load efficiency, forced PWM for noise-sensitive systems, and external clock synchronization (2.2–2.8 MHz).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 5.0 V ±2% - eliminates need for external feedback resistors and ensures stable rail for USB-peripheral logic or RF front-end biasing. |
| Max Output Current | 600 mA - supports moderate-power loads such as Bluetooth SoCs or camera modules without thermal derating on standard 4-layer PCBs. |
| Input Voltage Range | 2.3 V to 5.5 V - compatible with single Li-ion/Li-polymer cells, USB 5 V, or multi-cell alkaline/NiMH sources without intermediate regulation. |
| Switching Frequency | 2.5 MHz (typical) - enables small 1.5 µH inductors and low-profile ceramic capacitors, reducing solution footprint to under 40 mm². |
| Quiescent Current | 38 µA (typical) - extends battery runtime in always-on sensor nodes or standby circuits where load drops below 75 mA. |
| Shutdown Current | <1 µA - isolates input from output during logic-controlled shutdown, preventing battery drain in off-state portable equipment. |
| Package | 10-lead 3 mm × 3 mm LFCSP (QFN) with exposed pad - provides low thermal resistance (θJA = 84°C/W) and efficient heat transfer to PGND plane. |
Pinout & Package
ADP2503ACPZ-5.0-R7 uses a 10-lead, 3 mm × 3 mm lead frame chip-scale package (LFCSP) with an exposed thermal pad connected to PGND. The compact footprint and low 1 mm height support ultra-thin portable designs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VOUT | Regulated output node | Delivers fixed 5.0 V; requires direct connection to output capacitor bank (≥22 µF) for stability and transient response. |
| SW2 | Buck-boost switch node 2 | Connects to inductor's input side; carries high di/dt switching current-requires short, wide copper trace to minimize EMI and voltage spikes. |
| PGND | Power ground reference | Common return for input/output capacitors and power switches; must be tied to exposed pad and solid PGND plane for thermal and noise control. |
| SW1 | Buck-boost switch node 1 | Connects to inductor's output side; shares same layout sensitivity as SW2-critical for minimizing loop inductance in buck/boost transitions. |
| PVIN | Main power input rail | Supplies internal power switches; requires local 10 µF ceramic capacitor placed adjacent to pin to suppress high-frequency ripple. |
| EN | Enable/shutdown control | Active-high logic input; pulling low disables regulator and reduces input current to <1 µA-used for system-level power sequencing. |
| SYNC | Mode selection & synchronization | Configures operation mode: low = PSM + PWM auto-switch; high = forced PWM; AC signal (2.2–2.8 MHz) = external clock sync. |
| VIN | Analog supply input | Provides bias for internal control circuitry; decoupled separately from PVIN to avoid noise coupling into error amplifier and reference. |
| AGND | Analog ground reference | Separate ground for feedback and control circuitry; must be connected to PGND at single point near IC to prevent ground bounce. |
| FB | Feedback input | Internally tied to VOUT for fixed-output variants; not user-accessible on ADP2503ACPZ-5.0-R7-no external resistor divider required. |
Key Features
| Feature | Design Value |
|---|---|
| Seamless buck-boost mode transition | Maintains regulation across VIN = 2.3–5.5 V without output glitch or manual reconfiguration-ideal for battery-powered systems with varying state-of-charge. |
| True load disconnect in boost mode | Isolates VOUT from PVIN during shutdown using internal PMOS switch-prevents backfeed and enables safe hot-swap of peripherals. |
| Internal compensation network | Eliminates external compensation components, reducing BOM count and layout complexity while guaranteeing stability with recommended 22 µF output capacitance. |
| Soft-start (200 µs) | Limits inrush current to <600 mA with 20 µF output cap-protects input source and avoids brownout during power-up of downstream logic. |
| Three SYNC pin operating modes | Enables flexible system integration: PSM for max battery life, forced PWM for EMI-critical RF sections, and external sync for multi-rail timing coherence. |
Applications
| Wireless Handsets | Digital Cameras |
|---|---|
Use Scenario: Powering baseband processor I/O rails and RF transceiver bias supplies from a single Li-ion cell with declining voltage over discharge cycle. IC Role / Device Role / Timing Role: Buck-boost regulator maintaining stable 5.0 V output while VIN drops from 4.2 V to 2.8 V-ensuring consistent logic levels and RF performance. Use Value: Eliminates need for separate buck and boost stages, reducing component count by ≥40% and PCB area by >30% versus discrete solutions. |
Use Scenario: Supplying image sensor analog core and flash LED driver from USB 5 V or battery during burst capture mode. IC Role / Device Role / Timing Role: Delivers regulated 5.0 V at up to 600 mA with fast load transient response (<10 µs recovery) to handle sensor pixel readout surges. Use Value: Maintains sensor SNR and flash brightness consistency without undershoot-induced frame corruption or exposure errors. |
| USB-Powered Peripherals | Portable Audio Players |
Use Scenario: Providing clean 5.0 V rail to USB-C PD sink controllers, level shifters, and USB PHYs in dongles or adapters. IC Role / Device Role / Timing Role: Regulates from variable USB input (4.75–5.5 V) while rejecting high-frequency noise from data lines via low-noise PWM operation. Use Value: Ensures USB compliance by limiting conducted emissions and meeting VBUS ripple requirements (<50 mVpp) without added LC filters. |
Use Scenario: Powering DAC, headphone amplifier, and microSD interface from single-cell Li-polymer battery with minimal voltage sag during bass-heavy playback. IC Role / Device Role / Timing Role: Operates in buck-boost mode across full battery range (4.2 V → 2.8 V), sustaining 5.0 V output with <1% line regulation. Use Value: Prevents audio clipping and digital glitches caused by rail collapse-enabling continuous 24-bit/96 kHz playback until battery cutoff. |
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 | 600 mA, 2.5 MHz, fixed 5.0 V output; higher quiescent current (25 µA typical in PFM vs. 38 µA in ADP2503); no SYNC pin for external clock sync. | Lacks true load disconnect and soft-start programmability; less suitable for hot-swap USB peripherals requiring strict isolation. | Prefer when lowest possible quiescent current in PFM mode is critical and external sync is unnecessary. |
| MAX77827CEFG+T | 600 mA, 2.2 MHz, fixed 5.0 V; includes I²C interface for dynamic voltage scaling and telemetry; larger 16-pin 3 mm × 3 mm WLP package. | Supports firmware-controlled rail sequencing and fault logging-better for complex embedded systems needing diagnostics. | Choose when system-level monitoring, adaptive output adjustment, or multi-rail coordination is required beyond basic regulation. |
Compared with TPS63020DSJR and MAX77827CEFG+T, the ADP2503ACPZ-5.0-R7 offers unique combination of true load disconnect, three-mode SYNC control, and guaranteed 38 µA quiescent current at 3.6 V-making it optimal for USB peripherals and battery-powered imaging where isolation, EMI control, and standby efficiency are co-critical.
Availability
ADP2503ACPZ-5.0-R7 is available at Aetrix Electronics and suitable for wireless handsets, USB-powered peripherals, and portable audio players requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for ADP2503ACPZ-5.0-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 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 ADP2503ACPZ-5.0-R7 belongs to Analog Devices' high-efficiency, low-quiescent-current buck-boost converter family-designed specifically for portable and battery-operated applications demanding compact size, seamless voltage-mode transition, and robust protection features.
FAQ
What is the maximum output current capability of the ADP2503ACPZ-5.0-R7?
The ADP2503ACPZ-5.0-R7 delivers up to 600 mA continuous output current under typical thermal conditions on a standard 4-layer PCB. Its internal switch current limit is rated at 1.0 A (min) to 1.4 A (max), allowing brief peak loads but requiring careful thermal design above 600 mA to maintain junction temperature below 125°C.
Does the ADP2503ACPZ-5.0-R7 require external feedback resistors to set the output voltage?
No. The ADP2503ACPZ-5.0-R7 is a fixed-output variant with factory-trimmed 5.0 V regulation. The FB pin is internally connected to VOUT, eliminating the need for external resistor dividers. This simplifies layout, improves accuracy (±2% initial tolerance), and enhances long-term stability versus adjustable counterparts.
How does the SYNC pin function on the ADP2503ACPZ-5.0-R7?
The SYNC pin on the ADP2503ACPZ-5.0-R7 supports three distinct modes: pulled low enables automatic PSM/PWM transition; driven high forces continuous 2.5 MHz PWM operation; and driven with a 2.2–2.8 MHz square wave synchronizes switching to an external clock-critical for noise-sensitive RF or multi-rail coherent timing systems.
What protection features are integrated into the ADP2503ACPZ-5.0-R7?
The ADP2503ACPZ-5.0-R7 includes overtemperature shutdown (150°C trip, 25°C hysteresis), short-circuit protection (1.5 A peak current limit), reverse current limiting (1.1 A), undervoltage lockout (2.20 V rising threshold), and true load disconnect during shutdown-ensuring robust operation in portable and USB-connected applications.
Can the ADP2503ACPZ-5.0-R7 operate from a single Li-ion battery throughout its full discharge curve?
Yes. With an input range of 2.3 V to 5.5 V and seamless buck-boost operation, the ADP2503ACPZ-5.0-R7 maintains regulated 5.0 V output from a fully charged Li-ion cell (4.2 V) down to end-of-discharge (~2.8 V), enabling uninterrupted operation in handheld devices without intermediate regulation stages.
ADP2503ACPZ-5.0-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):
- 5V
- Voltage - Output (Max):
- -
- Current - Output:
- 600mA
- 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)
ADP2503ACPZ-5.0-R7 FAQ
1.How can I place an order for ADP2503ACPZ-5.0-R7 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADP2503ACPZ-5.0-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 ADP2503ACPZ-5.0-R7 reliable?
The price and inventory of ADP2503ACPZ-5.0-R7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADP2503ACPZ-5.0-R7 is usually 5 days.
3.What payment methods are accepted for ADP2503ACPZ-5.0-R7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADP2503ACPZ-5.0-R7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADP2503ACPZ-5.0-R7?
ADP2503ACPZ-5.0-R7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADP2503ACPZ-5.0-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 ADP2503ACPZ-5.0-R7?
For technical support, including ADP2503ACPZ-5.0-R7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADP2503ACPZ-5.0-R7 requirements.
6.How does Aetrix verify that ADP2503ACPZ-5.0-R7 is sourced from the original manufacturer or authorized distributors?
All ADP2503ACPZ-5.0-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 ADP2503ACPZ-5.0-R7 meets industry standards.
7.What is the process for return or replacement of ADP2503ACPZ-5.0-R7?
All ADP2503ACPZ-5.0-R7 units undergo pre-shipment inspection (PSI). If there is an issue with ADP2503ACPZ-5.0-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 ADP2503ACPZ-5.0-R7 part is unused and in its original packaging.
Return procedure for ADP2503ACPZ-5.0-R7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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