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Analog Devices Inc. ADP5302ACPZ-3-R7
- Part No.:
- ADP5302ACPZ-3-R7
- Manufacturer:
- Analog Devices Inc.
- Package:
- 10-VFDFN Exposed Pad, CSP
- Datasheet:
-
ADP5302ACPZ-3-R7.pdf
- Description:
- IC REG BUCK PROG 10LFCSP
- Quantity:
- Payment:
- Shipping:
Inventory:1,479
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Product details
Overview
ADP5302ACPZ-3-R7 from Analog Devices is an ultralow-power, dual-mode step-down regulator with integrated battery voltage monitor (VINOK), 240 nA quiescent current in hysteresis mode, 500 mA output capability in PWM mode, and factory-programmable 3.0 V fixed output voltage. It operates from 2.15 V to 6.50 V input and targets keep-alive power supplies in energy metering and portable medical devices.
For engineers reviewing the ADP5302ACPZ-3-R7 datasheet, ADP5302ACPZ-3-R7 pinout, ADP5302ACPZ-3-R7 application, or ADP5302ACPZ-3-R7 equivalent, key selection considerations include its 10-lead LFCSP package, STOP pin for noise-sensitive system quieting, VINOK flag for battery health monitoring, and dual-mode operation enabling simultaneous optimization of battery life and output ripple.
Technical Context
The ADP5302ACPZ-3-R7 implements a synchronous buck topology with separate high-side (386 mΩ typical RDS(ON)) and low-side (299 mΩ typical RDS(ON)) MOSFETs, supporting both hysteresis mode (240 nA IQ, up to 50 mA) and PWM mode (425 µA IQ, up to 500 mA). Its SYNC/MODE pin enables real-time switching between modes or external clock synchronization from 1.5 MHz to 2.5 MHz.
It integrates a factory-trimmed 3.0 V output (±0.6% accuracy at TJ = 25°C), a dedicated VINOK comparator with programmable threshold (2.05–5.15 V range), and a STOP pin that halts switching within 10 ns to eliminate switching noise during RF transmission or precision ADC sampling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.15 V to 6.50 V - supports single Li-ion, multi-cell alkaline/NiMH, or industrial supply rails without pre-regulation. |
| Quiescent Current (Hys) | 240 nA typical - enables >10-year battery life in always-on keep-alive applications with microamp-level loads. |
| Output Current (PWM) | 500 mA - sufficient to power MCU cores, sensors, and wireless transceivers directly from battery. |
| Output Voltage | Fixed 3.0 V ±0.6% (25°C), ±1.2% (−40°C to +125°C) - factory-fused, eliminating external feedback resistors and layout sensitivity. |
| Switching Frequency | 2 MHz nominal (PWM), synchronizable 1.5–2.5 MHz - allows compact 2.2 µH inductor and avoids AM radio band interference. |
| VINOK Threshold Accuracy | ±1.5% (25°C), ±3% (−40°C to +125°C) - provides reliable battery end-of-life detection with minimal calibration overhead. |
| Thermal Protection | 142°C shutdown with 127°C hysteresis - prevents thermal runaway during sustained high-load or high-ambient conditions. |
Pinout & Package
ADP5302ACPZ-3-R7 is housed in a 10-lead, 3 mm × 3 mm LFCSP package with exposed pad (EPAD) for thermal dissipation. The package is rated for −40°C to +125°C junction temperature and requires soldering the EPAD to a large PCB ground plane.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EN | Enable control input | Logic-high active enable; pulls regulator into ultra-low shutdown current (18–130 nA) when low. |
| STOP | Switching halt signal | Asserting high disables PWM/hysteresis switching within 10 ns-critical for RF/ADC quiet periods. |
| SYNC/MODE | Mode select & sync input | Low = hysteresis mode (240 nA IQ); high = PWM mode (500 mA); also accepts 1.5–2.5 MHz external clock. |
| VID | Output voltage configuration | Tied to PVIN for fixed 3.0 V output per factory fuse-no external resistor required. |
| FB | Feedback sensing node | Internally connected to output; no external divider needed for fixed-VOUT variants like ADP5302ACPZ-3-R7. |
| VINOK | Battery monitor flag | Open-drain output asserting low when PVIN falls below factory-set threshold (e.g., 3.0 V ±3%). |
| AGND / PGND | Analog & power ground | Separate ground pins minimize noise coupling between sensitive analog blocks and high-current power paths. |
| SW | Switching node | Connects to external inductor; carries high di/dt pulses-requires tight layout and Kelvin connection to PGND. |
| PVIN | Main power input | Accepts 2.15–6.50 V; includes UVLO (2.06 V rising) and overvoltage protection up to +7 V absolute max. |
Key Features
| Feature | Design Value |
|---|---|
| Dual operational modes | Hysteresis mode (240 nA IQ, 50 mA) and PWM mode (500 mA, low ripple) selectable in real time via SYNC/MODE pin. |
| Factory-fixed 3.0 V output | Eliminates external feedback resistors and associated layout errors-guarantees ±0.6% accuracy at 25°C. |
| VINOK battery monitor | Configurable open-drain flag with ±3% threshold accuracy across −40°C to +125°C for robust battery health signaling. |
| Ultrafast STOP function | Halts switching within 10 ns to suppress conducted/emitted noise during critical analog or RF events. |
| Integrated safety protections | UVLO, cycle-by-cycle OCP (1000 mA typical), thermal shutdown (142°C), and frequency foldback during short-circuit. |
Applications
| Energy Metering | Portable Medical Sensors |
|---|---|
Use Scenario: Long-life gas/water meter with hourly RF wake-up and sensor readout. IC Role / Device Role / Timing Role: Keep-alive power supply maintaining RTC, memory, and microcontroller in deep sleep between transmissions. Use Value: 240 nA hysteresis-mode IQ extends primary battery life beyond 10 years while delivering 3.0 V stable rail for low-power MCU and LoRa transceiver. |
Use Scenario: Wearable ECG patch requiring continuous analog front-end bias during motion artifact rejection. IC Role / Device Role / Timing Role: Primary regulated supply for precision analog signal chain and low-noise ADC reference. Use Value: STOP pin disables switching during ADC sampling windows, reducing switching noise on analog inputs by >40 dB. |
| Industrial IoT Node | Smart Utility Transmitter |
Use Scenario: Battery-powered vibration sensor node transmitting data every 5 minutes via NB-IoT. IC Role / Device Role / Timing Role: System power manager enabling dynamic mode switching between ultra-low-power sleep and burst transmit. Use Value: Real-time SYNC/MODE pin control transitions from 240 nA hysteresis mode (sleep) to 500 mA PWM mode (transmit) without reset or delay. |
Use Scenario: Smart water meter with tamper detection, temperature logging, and GPRS reporting. IC Role / Device Role / Timing Role: Input battery monitor and main power regulator with fault signaling to host MCU. Use Value: VINOK flag alerts MCU when battery drops below 3.0 V threshold-enabling graceful shutdown before data corruption occurs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS62740DRYR | 250 nA IQ, 300 mA output, fixed 3.3 V only; no VINOK or STOP pin. | Lacks battery monitoring and noise-quenching features-requires external circuitry for similar functionality. | Choose if 3.3 V output suffices and VINOK/STOP are not required; lower cost but higher BOM count. |
| MAX17222ELT+T | 350 nA IQ, 400 mA output, 0.7–5.0 V adjustable; no integrated battery monitor or STOP function. | No factory-fixed output or dedicated battery flag-designer must add comparator and logic for VINOK behavior. | Select when adjustable output is mandatory and external VINOK implementation is acceptable. |
Compared with TPS62740DRYR and MAX17222ELT+T, ADP5302ACPZ-3-R7 uniquely integrates VINOK monitoring, STOP-controlled noise suppression, and factory-trimmed 3.0 V output in one 3 mm × 3 mm package-reducing design risk and board area for battery-critical applications.
Availability
ADP5302ACPZ-3-R7 is available at Aetrix Electronics and suitable for energy metering, portable medical sensors, and industrial IoT nodes requiring stable component supply, long-term lifecycle support, and guaranteed parametric performance across −40°C to +125°C.
Supply support for ADP5302ACPZ-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, headquartered in Norwood, MA, with design centers worldwide and a legacy of precision power management innovation.
The ADP5302ACPZ-3-R7 belongs to Analog Devices' ultralow-power DC/DC converter product line, engineered specifically for battery-constrained systems where multi-year operation, accurate battery monitoring, and system-level noise control are non-negotiable.
FAQ
What is the output voltage of the ADP5302ACPZ-3-R7?
The ADP5302ACPZ-3-R7 features a factory-programmed fixed output voltage of 3.0 V, with ±0.6% accuracy at 25°C and ±1.2% over −40°C to +125°C. This eliminates the need for external feedback resistors and ensures consistent regulation without layout-dependent drift. The VID pin is internally tied to PVIN to activate this fixed-output configuration in the ADP5302ACPZ-3-R7 variant.
How does the STOP pin function in the ADP5302ACPZ-3-R7?
The STOP pin on the ADP5302ACPZ-3-R7 halts all internal switching activity within 10 ns of being driven high, suppressing conducted and radiated noise during sensitive operations such as RF transmission or high-resolution ADC sampling. When pulled low, switching resumes within 20 ns. This feature is hardware-controlled and requires no firmware intervention-making it ideal for deterministic noise management in the ADP5302ACPZ-3-R7.
What protection features are integrated into the ADP5302ACPZ-3-R7?
The ADP5302ACPZ-3-R7 includes undervoltage lockout (UVLO), overcurrent protection (OCP) with 1000 mA typical current limit, thermal shutdown at 142°C with 15°C hysteresis, and frequency foldback during output short-circuit. These protections operate autonomously without external components, ensuring robust operation under fault conditions while maintaining the ADP5302ACPZ-3-R7's ultralow quiescent current in normal operation.
Can the ADP5302ACPZ-3-R7 operate from a single alkaline cell?
Yes-the ADP5302ACPZ-3-R7 operates down to 2.15 V input and functions reliably even as a single alkaline cell discharges to ~2.0 V (UVLO falling threshold). Its 240 nA hysteresis-mode quiescent current enables multi-year operation from standard AA/AAA cells in low-duty-cycle applications, making it well-suited for remote sensing nodes powered by the ADP5302ACPZ-3-R7.
Is the ADP5302ACPZ-3-R7 pin-compatible with other variants in the ADP5302 family?
Yes-all ADP5302 variants, including ADP5302ACPZ-3-R7, share the identical 10-lead 3 mm × 3 mm LFCSP package and pinout. Differences lie solely in factory-programmed parameters (e.g., output voltage, VINOK threshold), meaning PCB layout and external components (inductor, capacitors) are fully reusable across the family-simplifying design reuse and inventory management for the ADP5302ACPZ-3-R7.
ADP5302ACPZ-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-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Programmable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.15V
- Voltage - Input (Max):
- 6.5V
- Voltage - Output (Min/Fixed):
- 0.8V
- Voltage - Output (Max):
- 5V
- Current - Output:
- 50mA, 500mA
- Frequency - Switching:
- 2MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-LFCSP-WD (3x3)
ADP5302ACPZ-3-R7 FAQ
1.How can I place an order for ADP5302ACPZ-3-R7 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADP5302ACPZ-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 ADP5302ACPZ-3-R7 reliable?
The price and inventory of ADP5302ACPZ-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 ADP5302ACPZ-3-R7 is usually 5 days.
3.What payment methods are accepted for ADP5302ACPZ-3-R7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADP5302ACPZ-3-R7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADP5302ACPZ-3-R7?
ADP5302ACPZ-3-R7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADP5302ACPZ-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 ADP5302ACPZ-3-R7?
For technical support, including ADP5302ACPZ-3-R7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADP5302ACPZ-3-R7 requirements.
6.How does Aetrix verify that ADP5302ACPZ-3-R7 is sourced from the original manufacturer or authorized distributors?
All ADP5302ACPZ-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 ADP5302ACPZ-3-R7 meets industry standards.
7.What is the process for return or replacement of ADP5302ACPZ-3-R7?
All ADP5302ACPZ-3-R7 units undergo pre-shipment inspection (PSI). If there is an issue with ADP5302ACPZ-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 ADP5302ACPZ-3-R7 part is unused and in its original packaging.
Return procedure for ADP5302ACPZ-3-R7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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