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Analog Devices Inc. ADP5310AREZN-2.8R7
- Part No.:
- ADP5310AREZN-2.8R7
- Manufacturer:
- Analog Devices Inc.
- Package:
- 16-TSSOP (0.173", 4.40mm Width) Exposed Pad
- Datasheet:
-
ADP5310AREZN-2.8R7.pdf
- Description:
- IC REG BUCK ADJ/2.8V DL 16TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,998
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Product details
Overview
ADP5310AREZN-2.8R7 from Analog Devices is a 3-channel integrated power management IC featuring two synchronous buck regulators (800 mA Channel 1, 50/300 mA Channel 2) and a high-side load switch (494 mΩ @ 2.5 V), all in a 16-lead TSSOP_EP package. It operates from 2.7 V to 15.0 V input, delivers ±1.5% output accuracy in PWM mode, and achieves 700 nA quiescent current in hysteresis mode-enabling ultra-low-power keep-alive supplies in battery-powered metering and medical devices.
For engineers reviewing the ADP5310AREZN-2.8R7 datasheet, ADP5310AREZN-2.8R7 pinout, ADP5310AREZN-2.8R7 application, or ADP5310AREZN-2.8R7 equivalent, key selection considerations include its dual-mode Channel 2 (hysteresis vs. PWM), factory-fused 2.8 V fixed output on Channel 1, integrated power-good flag, and thermal/overcurrent protections across all channels.
Technical Context
The ADP5310AREZN-2.8R7 implements current-mode PWM control for Channel 1 with automatic PSM/PWM transition and 100% duty-cycle capability, ensuring stable regulation under light and heavy loads. Its Channel 2 uses a selectable hysteresis or constant-frequency PWM architecture controlled by the SYNC/MODE pin, enabling sub-1 mW operation at zero load or low-noise performance up to 300 mA.
Channel 3 functions as a dedicated high-side load switch powered from Channel 2's output (1.65 V–5.5 V range), providing domain isolation with quick output discharge (QOD) and 494 mΩ RDS(ON) at 2.5 V. All channels share UVLO, OCP, and TSD protection, and operate across −40°C to +125°C junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.7 V to 15.0 V - supports multi-cell alkaline/NiMH or single/dual Li-ion/LiMnO₂ sources without external pre-regulation. |
| Quiescent Current (Hysteresis Mode) | 700 nA - enables >10-year battery life in always-on keep-alive applications like gas/water metering. |
| Channel 1 Output | Fixed 2.8 V, ±1.5% accuracy - factory-trimmed for precision rail generation without external feedback resistors. |
| Channel 2 Max Output Current | 300 mA (PWM) / 50 mA (hysteresis) - scalable power delivery for mixed-signal subsystems or sensor biasing. |
| Load Switch RDS(ON) | 494 mΩ @ VOUT3 = 2.5 V - minimizes dropout and self-heating during active power domain control. |
| Switching Frequency | 600 kHz or 1.2 MHz, sync-capable (400 kHz–1.4 MHz) - allows EMI optimization and inductor size reduction. |
| Operating Temperature | −40°C to +125°C junction - qualified for industrial and extended-temperature embedded environments. |
Pinout & Package
ADP5310AREZN-2.8R7 is housed in a thermally enhanced 16-lead TSSOP_EP package with exposed pad soldered to PCB ground plane for thermal dissipation. Pin numbering follows standard top-view orientation with Pin 1 at top-left corner.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| PVIN1 / PVIN2 | Shared input power rails | Must be connected externally; powers Channel 1, Channel 2, and internal LDO (VREG). |
| EN1 | Channel 1 enable | Logic-high active; controls startup/shutdown of main 800 mA buck regulator. |
| SYNC/MODE | Mode select & sync input | Low = Channel 2 hysteresis mode (700 nA IQ); high = Channel 2 PWM mode (low ripple). |
| PWRGD | Open-drain power-good flag | Asserts when Channel 1 output reaches 92% of nominal 2.8 V; used for system sequencing. |
| FB1 / FB2 | Feedback inputs | Not used in fixed-output configuration (ADP5310AREZN-2.8R7); internally tied to reference. |
| VOUT3 / EN3 | Load switch output & enable | VOUT3 sourced from Channel 2 output; EN3 independently gates power to downstream circuitry. |
Key Features
| Feature | Design Value |
|---|---|
| Dual-mode Channel 2 | Hysteresis mode enables 700 nA IQ and 50 mA output for ultra-low-power keep-alive; PWM mode delivers 300 mA with <10 mVpp ripple at 2.8 V. |
| Factory-fused 2.8 V output | Eliminates external resistor network for Channel 1, reducing BOM count and layout area while guaranteeing ±1.5% accuracy over temperature. |
| Integrated load switch with QOD | Enables clean power domain isolation and rapid discharge of downstream capacitance (<10 µs typical), preventing voltage backfeed or latch-up. |
| Full protection suite | UVLO (2.55 V rising), OCP (1.26 A typ. Channel 1), TSD (135°C), and soft-start (350 µs) ensure robust operation in unregulated battery systems. |
| Thermally optimized package | TSSOP_EP with θJA = 39.14°C/W enables 1.2 W continuous dissipation at +85°C ambient without heatsink. |
Applications
| Energy Metering | Portable Medical Devices |
|---|---|
Use Scenario: Gas/water meters requiring decade-long battery life with periodic RF wake-up and sensor readout. IC Role / Device Role / Timing Role: ADP5310AREZN-2.8R7 provides primary 2.8 V rail for MCU and sensors via Channel 1, while Channel 2 in hysteresis mode powers real-time clock and memory retention at 700 nA. Use Value: Enables >12-year shelf life on two AA cells by minimizing standby IQ and eliminating discrete LDOs. | Use Scenario: Handheld glucose monitors or pulse oximeters operating from coin-cell or AAA batteries. IC Role / Device Role / Timing Role: ADP5310AREZN-2.8R7 delivers regulated 2.8 V to analog front-end and 3.3 V (via Channel 2 PWM) to Bluetooth LE radio during transmission bursts. Use Value: Dual-mode regulation extends runtime by 3.2× versus fixed-PWM solutions during idle intervals. |
| Keep-Alive Power Supplies | Battery-Powered Industrial Sensors |
Use Scenario: Remote IoT nodes that sleep >99.9% of time but must retain SRAM state and RTC accuracy. IC Role / Device Role / Timing Role: ADP5310AREZN-2.8R7 Channel 2 in hysteresis mode supplies 1.8 V to backup domain; Channel 3 isolates backup rail during main system shutdown. Use Value: Achieves 0.8 µA total system standby current including IC and load, meeting IEC 62304 Class C requirements. | Use Scenario: Wireless vibration sensors mounted on rotating machinery with 10-year maintenance cycles. IC Role / Device Role / Timing Role: ADP5310AREZN-2.8R7 Channel 1 powers microcontroller and ADC; Channel 2 PWM mode supplies 5.0 V to MEMS accelerometer during acquisition windows. Use Value: Synchronized switching (via SYNC/MODE) reduces conducted EMI coupling into sensitive analog signal paths. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-buck + load switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS62840DLCR | Single 1.8-A buck with 250 nA IQ; no second buck or load switch; 2.7–6.5 V input. | Lacks Channel 2 hysteresis mode and independent load switch; suitable only for single-rail, lower-voltage systems. | Select if only one high-efficiency rail is needed and input stays below 6.5 V. |
| MAX20073ATC+T | Dual buck (3A/2A) + load switch; 3.5–36 V input; 25 µA IQ; no hysteresis mode. | Higher IQ prevents multi-year battery operation; wider VIN suits automotive but over-spec for portable metering. | Select for 12 V/24 V industrial systems where ultra-low IQ is secondary to current capability. |
Compared with TPS62840DLCR and MAX20073ATC+T, the ADP5310AREZN-2.8R7 uniquely combines sub-µA hysteresis regulation, dual independent buck outputs, and integrated load switch in a single 16-pin TSSOP_EP-making it the only solution capable of simultaneously satisfying multi-decade battery life, mixed-signal rail separation, and domain-level power gating in space-constrained portable equipment.
Availability
ADP5310AREZN-2.8R7 is available at Aetrix Electronics and suitable for energy metering, portable medical devices, and battery-powered industrial sensors requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.
Supply support for ADP5310AREZN-2.8R7 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 healthcare markets.
The ADP5310 product line was designed specifically for ultra-low-power, multi-rail power management in battery-critical applications-emphasizing sub-microwatt quiescent operation, factory-programmable outputs, and integrated protection without external components.
FAQ
What is the fixed output voltage of Channel 1 on the ADP5310AREZN-2.8R7?
The ADP5310AREZN-2.8R7 has Channel 1 factory-fused to deliver a precise 2.8 V output with ±1.5% accuracy over −40°C to +125°C. This fixed voltage eliminates the need for external feedback resistors and ensures consistent regulation without trimming or calibration during manufacturing.
How does the SYNC/MODE pin affect ADP5310AREZN-2.8R7 operation?
On the ADP5310AREZN-2.8R7, the SYNC/MODE pin selects Channel 2's operating mode: logic low enables hysteresis mode (700 nA IQ, 50 mA output), while logic high activates PWM mode (300 mA output, low ripple). It also accepts external clock signals (400 kHz–1.4 MHz) to synchronize switching frequency across multiple devices.
Does the ADP5310AREZN-2.8R7 require external components for basic operation?
Yes-the ADP5310AREZN-2.8R7 requires external inductors (4.7 µH per buck channel), input/output capacitors (10 µF MLCC), and a 1 µF capacitor on VREG. No external feedback resistors are needed for Channel 1 (2.8 V fixed) or Channel 2 (factory-configured), simplifying design and reducing BOM count.
What protection features are integrated into the ADP5310AREZN-2.8R7?
The ADP5310AREZN-2.8R7 integrates input UVLO (2.55 V rising threshold), overcurrent protection (1.26 A typical for Channel 1), thermal shutdown (135°C), and soft-start (350 µs). All three channels include these protections, ensuring safe operation in unregulated battery-powered systems without external supervision circuitry.
Can the ADP5310AREZN-2.8R7 power domains independently?
Yes-the ADP5310AREZN-2.8R7 supports independent control: EN1 enables/disables Channel 1, SYNC/MODE configures Channel 2 mode, and EN3 gates Channel 3 load switch. This allows staggered startup, selective power-down of subsystems, and dynamic reconfiguration of power domains without affecting other rails.
ADP5310AREZN-2.8R7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 16-TSSOP (0.173", 4.40mm Width) Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Adjustable (Fixed)
- Number of Outputs:
- 2
- Voltage - Input (Min):
- 2.7V
- Voltage - Input (Max):
- 15V
- Voltage - Output (Min/Fixed):
- 0.8V (2.8V)
- Voltage - Output (Max):
- 5V
- Current - Output:
- 50mA, 300mA, 800mA
- Frequency - Switching:
- 600kHz , 1.2GHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-TSSOP-EP
ADP5310AREZN-2.8R7 FAQ
1.How can I place an order for ADP5310AREZN-2.8R7 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADP5310AREZN-2.8R7 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 ADP5310AREZN-2.8R7 reliable?
The price and inventory of ADP5310AREZN-2.8R7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADP5310AREZN-2.8R7 is usually 5 days.
3.What payment methods are accepted for ADP5310AREZN-2.8R7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADP5310AREZN-2.8R7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADP5310AREZN-2.8R7?
ADP5310AREZN-2.8R7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADP5310AREZN-2.8R7 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 ADP5310AREZN-2.8R7?
For technical support, including ADP5310AREZN-2.8R7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADP5310AREZN-2.8R7 requirements.
6.How does Aetrix verify that ADP5310AREZN-2.8R7 is sourced from the original manufacturer or authorized distributors?
All ADP5310AREZN-2.8R7 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 ADP5310AREZN-2.8R7 meets industry standards.
7.What is the process for return or replacement of ADP5310AREZN-2.8R7?
All ADP5310AREZN-2.8R7 units undergo pre-shipment inspection (PSI). If there is an issue with ADP5310AREZN-2.8R7, 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 ADP5310AREZN-2.8R7 part is unused and in its original packaging.
Return procedure for ADP5310AREZN-2.8R7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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