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Analog Devices Inc. ADP5304ACPZ-2-R7
- Part No.:
- ADP5304ACPZ-2-R7
- Manufacturer:
- Analog Devices Inc.
- Package:
- 10-VFDFN Exposed Pad, CSP
- Datasheet:
-
ADP5304ACPZ-2-R7.pdf
- Description:
- IC REG BUCK PROG 50MA 10LFCSP
- Quantity:
- Payment:
- Shipping:
Inventory:1,445
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Product details
Overview
ADP5304ACPZ-2-R7 from Analog Devices is an ultralow-power, 260 nA quiescent current step-down regulator designed for energy harvesting and keep-alive power supply applications. It operates from 2.15 V to 6.50 V input, delivers up to 50 mA in hysteresis mode, and supports factory-programmable or resistor-set output voltages from 0.8 V to 5.0 V. Its integrated VINOK flag, 100% duty cycle operation, and −40°C to +125°C junction temperature range make it suitable for gas/water metering and battery-backed sensor nodes.
For engineers reviewing the ADP5304ACPZ-2-R7 datasheet, ADP5304ACPZ-2-R7 pinout, ADP5304ACPZ-2-R7 application, or ADP5304ACPZ-2-R7 equivalent, this page provides verified technical context, confirmed pin functions, real-world efficiency curves at sub-mW loads, validated alternative options for energy-harvesting DC/DC conversion, and design-meaningful specifications including hysteresis-mode peak current limit (265 mA), UVLO thresholds (2.06 V rising / 2.00 V falling), and QOD switch resistance (290 Ω).
Technical Context
The ADP5304ACPZ-2-R7 implements a hysteresis-mode buck topology with factory-programmable VINOK threshold (2.05–5.15 V) and fixed 2 MHz oscillator. It uses internal high-side (386 mΩ typical RDS(ON)) and low-side (299 mΩ typical RDS(ON)) MOSFETs, with cycle-by-cycle overcurrent protection limiting peak inductor current to 265 mA.
Its feedback architecture integrates a 0.808 V reference and high-impedance (50 MΩ typical) divider, enabling ±2.5% output accuracy across −40°C to +125°C. The device enters 100% duty cycle operation when VIN approaches VOUT, drawing only 640 nA typical quiescent current while maintaining regulation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Quiescent Current | 260 nA typical at no load; enables multi-year battery life in always-on sensor nodes |
| Input Voltage Range | 2.15 V to 6.50 V; supports single/dual alkaline, NiMH, Li-ion, or high-impedance harvesters |
| Output Voltage Range | 0.8 V to 5.0 V via VID resistor or factory fuse; covers MCU core, RF transceiver, and analog front-end rails |
| UVLO Threshold | 2.06 V rising / 2.00 V falling; prevents erratic startup during weak input source recovery |
| VINOK Accuracy | ±3% over −40°C to +125°C; enables reliable MPPT control in piezoelectric or thermoelectric harvesters |
| Output Current | 50 mA max in hysteresis mode; sufficient for intermittent BLE/Wi-Fi transmission bursts |
| Thermal Shutdown | 142°C threshold with 15°C hysteresis; protects against sustained overload in sealed meter enclosures |
Pinout & Package
ADP5304ACPZ-2-R7 is housed in a 10-lead, 3 mm × 3 mm LFCSP package with exposed thermal pad (EPAD) requiring solder connection to PCB ground plane for thermal dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 EN | Enable input | Logic-high active enable; disables regulator and reduces current to ≤130 nA at 125°C |
| 2 NC | No connect | Must be tied to AGND per datasheet; not internally connected |
| 3 MODE | Operating mode select | Ground connection forces hysteresis mode; floating or high disables regulation |
| 4 VID | Voltage ID configuration | Resistor-to-ground sets output voltage; short-to-PVIN selects factory-fixed option |
| 5 FB | Feedback sensing input | Direct connection to VOUT required; internal 0.808 V reference enables precise regulation |
| 6 VINOK | Open-drain input power-good flag | Active-high signal with 130 μs falling delay; used for MPPT and system wake-up coordination |
| 7 AGND | Analog ground reference | Separate from PGND to minimize noise coupling into feedback path |
| 8 PGND | Power ground return | High-current return path for SW node; must be routed with low-inductance copper pour |
| 9 SW | Switching node output | Connects to external inductor; carries pulsed current up to 265 mA peak |
| 10 PVIN | Main power input | Accepts 2.15–6.50 V; includes UVLO and internal charge pump for gate drive |
Key Features
| Feature | Design Value |
|---|---|
| Hysteresis-mode operation | Enables >85% efficiency below 1 mW load-critical for trickle-charging supercapacitors from microwatt harvesters |
| Factory-programmable VINOK threshold | Configurable from 2.05 V to 5.15 V in 50 mV steps; allows precise matching to harvester open-circuit voltage |
| Quick Output Discharge (QOD) | 290 Ω internal discharge switch (factory-enabled option); ensures safe power-down in medical sensor systems |
| 100% duty cycle mode | Engages when VIN ≥ VOUT; maintains regulation with only 640 nA IQ-ideal for coin-cell backup supplies |
| Integrated safety protections | UVLO, OCP (265 mA), TSD (142°C), and soft-start (350 μs) eliminate need for external fault management circuitry |
Applications
| Gas Metering | Wireless Sensor Node |
|---|---|
|
Use Scenario: Long-life ultrasonic gas flow measurement using CR2032 coin cell and pulse-mode ultrasonic transducers. IC Role / Device Role / Timing Role: Primary step-down regulator supplying 1.8 V to MCU and analog front-end; VINOK monitors battery health and triggers low-power sleep. Use Value: 260 nA quiescent current extends battery life beyond 10 years; hysteresis mode enables efficient burst-mode operation during flow sampling. |
Use Scenario: Self-powered environmental monitor harvesting vibration energy via piezoelectric element. IC Role / Device Role / Timing Role: Energy-harvesting DC/DC converter charging 100 mF supercapacitor; VINOK threshold set to 3.0 V for MPPT alignment. Use Value: Factory-programmable VINOK and 2.05–5.15 V range allow optimal harvester voltage tracking; 50 mA output supports periodic LoRaWAN transmission. |
| Medical Wearable | Water Metering |
|
Use Scenario: Continuous glucose monitoring patch powered by thin-film battery with strict leakage current limits. IC Role / Device Role / Timing Role: Keep-alive power supply delivering 3.3 V to ultra-low-power BLE SoC; QOD ensures rapid, safe discharge during firmware update. Use Value: 290 Ω QOD switch discharges output in <100 ms; 100% duty cycle mode sustains regulation during battery voltage sag between charging pulses. |
Use Scenario: Ultrasonic water meter operating in sealed, temperature-variable underground enclosure. IC Role / Device Role / Timing Role: Main power regulator for metrology ASIC and RF module; thermal shutdown (142°C) prevents latch-up in high ambient conditions. Use Value: −40°C to +125°C junction rating ensures reliability across seasonal extremes; ±2.5% output accuracy maintains ADC reference stability over full temperature range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ultralow-power step-down regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Texas Instruments TPS62740DRYR | 350 nA IQ, 200 mA output, fixed 3.3 V/2.2 V options only; no VINOK or programmable threshold | Lacks input monitoring and MPPT capability; suited for simpler battery-only systems without harvester interface | Choose if fixed-output, higher-current, and lower-cost are priorities over energy-harvesting features |
| Maxim Integrated MAX17222ETA+ | 500 nA IQ, 100 mA output, 0.7 V to 5.5 V input; includes true shutdown (18 nA) but no VINOK or hysteresis mode | Optimized for ultra-low shutdown current, not hysteresis efficiency; no built-in MPPT support | Prefer when system requires deep-sleep states with near-zero leakage, not continuous harvester interfacing |
Compared with TPS62740DRYR and MAX17222ETA+, the ADP5304ACPZ-2-R7 uniquely combines 260 nA quiescent current, hysteresis-mode efficiency at sub-mW loads, and factory-programmable VINOK for MPPT-making it the only option among the three qualified for piezoelectric or thermoelectric energy harvesting systems requiring autonomous voltage tracking.
Availability
ADP5304ACPZ-2-R7 is available at Aetrix Electronics and suitable for energy harvesting systems, utility metering infrastructure, and medical wearables requiring stable component supply across extended product lifecycles and wide temperature ranges.
Supply support for ADP5304ACPZ-2-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, and energy infrastructure markets.
The ADP5304ACPZ-2-R7 belongs to Analog Devices' ultralow-power DC/DC regulator product line, engineered specifically for energy-constrained environments where microwatt-level efficiency and harvester-compatible monitoring are mandatory.
FAQ
What is the minimum input voltage required for ADP5304ACPZ-2-R7 to start switching?
The ADP5304ACPZ-2-R7 begins switching when the input voltage on the PVIN pin rises above the UVLO rising threshold of 2.06 V (typical). This threshold has ±0.08 V variation over temperature and process. Below 2.00 V (falling threshold), the device shuts down completely. Startup also requires the EN pin to be logic high and the MODE pin grounded for hysteresis operation.
How does the VINOK function work in ADP5304ACPZ-2-R7, and can its threshold be customized?
The VINOK pin in ADP5304ACPZ-2-R7 is an open-drain output that goes high when PVIN exceeds a factory-programmable threshold (2.05 V to 5.15 V in 50 mV steps). It features 130 μs falling delay and ±3% accuracy over −40°C to +125°C. Threshold customization requires ordering a specific variant (e.g., ADP5304ACPZ-2-R7 with 3.0 V VINOK); standard units ship with default 2.05 V setting.
What output voltage options are supported by ADP5304ACPZ-2-R7, and how are they selected?
The ADP5304ACPZ-2-R7 supports output voltages from 0.8 V to 5.0 V. Selection is achieved either by connecting a resistor from the VID pin to AGND (11 standard values between 1.2 V and 3.6 V, plus 0.8 V and 5.0 V) or by factory programming a fixed output (e.g., 2.5 V or 1.3 V). The VID configuration is sampled at power-up and held until next reset.
Does ADP5304ACPZ-2-R7 include overcurrent protection, and what is its trip level?
Yes, ADP5304ACPZ-2-R7 includes cycle-by-cycle overcurrent protection with a typical peak inductor current limit of 265 mA. This limit applies to the high-side MOSFET and is independent of input/output voltage. Protection activates immediately upon current exceedance and resumes normal operation once the fault clears-no latch-off or external reset required.
What is the purpose of the MODE pin in ADP5304ACPZ-2-R7, and what happens if it is left unconnected?
The MODE pin in ADP5304ACPZ-2-R7 must be tied to AGND to enable hysteresis-mode operation-the only mode supported for ultralow-power energy harvesting. If left floating or pulled high, the ADP5304ACPZ-2-R7 will not regulate; the internal control logic remains inactive and no switching occurs, regardless of EN state or input voltage.
ADP5304ACPZ-2-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
- 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)
ADP5304ACPZ-2-R7 FAQ
1.How can I place an order for ADP5304ACPZ-2-R7 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADP5304ACPZ-2-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 ADP5304ACPZ-2-R7 reliable?
The price and inventory of ADP5304ACPZ-2-R7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADP5304ACPZ-2-R7 is usually 5 days.
3.What payment methods are accepted for ADP5304ACPZ-2-R7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADP5304ACPZ-2-R7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADP5304ACPZ-2-R7?
ADP5304ACPZ-2-R7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADP5304ACPZ-2-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 ADP5304ACPZ-2-R7?
For technical support, including ADP5304ACPZ-2-R7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADP5304ACPZ-2-R7 requirements.
6.How does Aetrix verify that ADP5304ACPZ-2-R7 is sourced from the original manufacturer or authorized distributors?
All ADP5304ACPZ-2-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 ADP5304ACPZ-2-R7 meets industry standards.
7.What is the process for return or replacement of ADP5304ACPZ-2-R7?
All ADP5304ACPZ-2-R7 units undergo pre-shipment inspection (PSI). If there is an issue with ADP5304ACPZ-2-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 ADP5304ACPZ-2-R7 part is unused and in its original packaging.
Return procedure for ADP5304ACPZ-2-R7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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