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Analog Devices Inc. ADP5310AREZN-255R7
- Part No.:
- ADP5310AREZN-255R7
- Manufacturer:
- Analog Devices Inc.
- Package:
- 16-TSSOP (0.173", 4.40mm Width) Exposed Pad
- Datasheet:
-
ADP5310AREZN-255R7.pdf
- Description:
- IC REG BCK ADJ/0.8V TRPL 16TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,961
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Product details
Overview
ADP5310AREZN-255R7 from Analog Devices is a 3-channel integrated power management IC featuring two synchronous buck regulators (800 mA and 300 mA/50 mA) 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 for battery-powered gas/water meters.
For engineers reviewing the ADP5310AREZN-255R7 datasheet, ADP5310AREZN-255R7 pinout, ADP5310AREZN-255R7 application, or ADP5310AREZN-255R7 equivalent, key selection criteria include dual-mode regulator operation (PSM/PWM vs. hysteresis), factory-programmable fixed/adjustable outputs, 100% duty-cycle capability, integrated power-good flag, and thermal/overcurrent protection across all channels.
Technical Context
The ADP5310AREZN-255R7 integrates three independent power domains: Channel 1 uses current-mode PWM control with automatic PSM/PWM transition and 600 kHz/1.2 MHz switching; Channel 2 supports dual-operation modes - hysteresis (700 nA IQ, 50 mA) or PWM (300 mA, low-noise at 0.8 V reference); Channel 3 is a 1.65 V–5.5 V high-side load switch with quick output discharge and RDS(ON) of 494 mΩ at 2.5 V.
All channels share a common −40°C to +125°C junction temperature rating, UVLO (2.55 V rising), overcurrent protection, and thermal shutdown (135°C). The SYNC/MODE pin controls both channel synchronization and Channel 2's operating mode, while EN1 and EN3 provide independent enable logic with 1.2 V/0.4 V thresholds.
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 metering applications with zero-load regulation. |
| Channel 1 output current | 800 mA - sufficient to power microcontrollers, RF transceivers, or sensor signal chains directly. |
| Channel 2 output current | 300 mA (PWM) / 50 mA (hysteresis) - scalable for active peripherals or ultra-low-power backup rails. |
| Load switch RDS(ON) | 494 mΩ at VOUT3 = 2.5 V - limits voltage drop and self-heating during sustained 100 mA loads. |
| Output accuracy (PWM) | ±1.5% over −40°C to +125°C - ensures stable ADC reference, sensor biasing, and MCU core voltage under thermal stress. |
| Switching frequency | 600 kHz or 1.2 MHz, synchronizable 400 kHz–1.4 MHz - allows EMI tuning and inductor size optimization. |
| Operating temperature | −40°C to +125°C junction - qualified for industrial metering enclosures and automotive under-hood auxiliary rails. |
Pinout & Package
16-lead TSSOP_EP package with exposed thermal pad soldered to PCB ground plane for thermal dissipation. Pin 3 (NC) is unconnected; EPAD must be grounded.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| PVIN1 / PVIN2 | Power inputs for Channels 1 & 2 | Shared 2.7–15 V supply rail; PVIN1 must be connected to PVIN2 per datasheet layout requirement. |
| SW1 / SW2 | Switching node outputs | Connect to external inductors; require low-ESR ceramic capacitors and careful high-dI/dt routing. |
| FB1 / FB2 | Feedback sensing inputs | Set output voltage via resistor divider (adjustable) or factory-trimmed (fixed); 0.800 V reference. |
| EN1 / EN3 | Enable inputs | Logic-level control (1.2 V high, 0.4 V low) for independent channel sequencing and power domain isolation. |
| SYNC/MODE | Mode selection & sync input | Dual-function: configures Channel 2 hysteresis/PWM mode and accepts external clock for frequency synchronization. |
| PWRGD | Open-drain power-good flag | Asserts when Channel 1 output reaches 92% of nominal; used for MCU reset or system boot sequencing. |
| VOUT3 | Load switch output | Powered from Channel 2 output; provides isolated, controlled power delivery to downstream peripherals. |
| AGND / PGND1 / PGND2 | Analog & power grounds | Separate AGND (noise-sensitive logic) and PGNDx (high-current return paths) minimize coupling and improve PSRR. |
Key Features
| Feature | Design Value |
|---|---|
| Triple integrated power domain | Eliminates need for three discrete regulators/switches - reduces BOM count, board area, and design validation effort. |
| 700 nA hysteresis-mode IQ | Enables decade-scale battery life in energy metering and remote IoT sensors without compromising wake-up responsiveness. |
| Factory-programmable outputs | Fixed voltages (1.2 V–5.0 V, 3-bit Channel 1; 1.2 V–5.0 V, 8-bit Channel 2) or adjustable via external resistors - simplifies qualification across product variants. |
| 100% duty-cycle operation | Maintains regulated output down to input voltage minus dropout - critical for brownout resilience in battery-depleted conditions. |
| Integrated safety protections | UVLO, OCP, and TSD are implemented per channel - prevents damage during fault conditions without external circuitry. |
| Power-good signaling | Channel 1 PWRGD flag enables deterministic system startup and safe firmware initialization before peripheral activation. |
Applications
| Energy Metering | Portable Medical Devices |
|---|---|
|
Use Scenario: Gas/water meter with long-life primary battery, real-time clock, ultrasonic flow sensor, and RF telemetry. IC Role / Device Role / Timing Role: ADP5310AREZN-255R7 supplies MCU core (Channel 1), RTC/sensor bias (Channel 2 hysteresis), and RF module (Channel 3 load switch). Use Value: 700 nA quiescent current extends battery life beyond 10 years; 100% duty cycle maintains RTC accuracy during battery depletion. |
Use Scenario: Handheld glucose monitor with LCD, electrochemical sensor, and Bluetooth LE radio. IC Role / Device Role / Timing Role: ADP5310AREZN-255R7 powers sensor analog front-end (Channel 2 PWM), MCU (Channel 1), and BLE radio (Channel 3 load switch). Use Value: Dual-mode Channel 2 delivers low-noise 3.3 V for precision ADCs in PWM mode and ultra-low IQ for standby - optimizing dynamic range and battery runtime. |
| Keep-Alive Power Supplies | Industrial Sensor Nodes |
|
Use Scenario: Smart building controller retaining configuration and RTC state during main power loss. IC Role / Device Role / Timing Role: ADP5310AREZN-255R7 Channel 2 hysteresis mode powers SRAM and RTC from backup coin cell; Channel 1 inactive. Use Value: 700 nA IQ minimizes backup battery drain; factory-fixed 3.3 V output eliminates external resistor network and calibration overhead. |
Use Scenario: Wireless vibration sensor node deployed in harsh factory environments with wide ambient temperature swings. IC Role / Device Role / Timing Role: ADP5310AREZN-255R7 regulates MCU, MEMS accelerometer, and LoRa transceiver across −40°C to +85°C operating range. Use Value: ±1.5% output accuracy over full temperature range ensures consistent ADC reference and sensor excitation - eliminating software compensation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar triple-output power management applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS65218D0RSLR | Higher IQ (2.5 µA), lower max input (5.5 V), no hysteresis mode, integrated LDOs instead of load switch. | Better suited for single-cell Li-ion systems with moderate IQ requirements; lacks ultra-low-power hysteresis capability. | Select if input is ≤5.5 V and hysteresis mode is unnecessary; avoid for multi-cell or >10-year battery life targets. |
| MAX20029ATGB/V+T | Wider input (3.5–36 V), higher Channel 1 current (1.2 A), no programmable hysteresis mode, larger 20-pin TQFN package. | Targeted at automotive body electronics; requires external discharge FET and lacks 700 nA standby capability. | Choose for 12 V/24 V automotive rails where extended battery life is secondary to high-current capability and AEC-Q100 compliance. |
Compared with TPS65218D0RSLR and MAX20029ATGB/V+T, the ADP5310AREZN-255R7 uniquely combines sub-µA hysteresis operation, 15 V input support, and integrated load switch in a compact TSSOP_EP - making it optimal for long-life, multi-source industrial metering and portable medical designs.
Availability
ADP5310AREZN-255R7 is available at Aetrix Electronics and suitable for energy metering, portable medical devices, and industrial sensor nodes requiring stable component supply, long-term lifecycle support, and guaranteed traceability.
Supply support for ADP5310AREZN-255R7 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, communications, automotive, and healthcare markets since 1965.
The ADP5310AREZN-255R7 belongs to Analog Devices' ultralow-power PMIC family, designed specifically for battery-constrained applications demanding multi-rail regulation, nanoscale quiescent current, and robust operation across extreme temperatures.
FAQ
What is the quiescent current of the ADP5310AREZN-255R7 in hysteresis mode?
The ADP5310AREZN-255R7 draws 700 nA quiescent current in hysteresis mode when EN1 and SYNC/MODE are held low, measured across −40°C to +85°C. At +125°C, it rises to 3800 nA maximum - still enabling multi-year battery operation in low-duty-cycle metering applications. This value applies specifically to Channel 2's hysteresis operation; Channel 1 is disabled in this configuration.
Does the ADP5310AREZN-255R7 support 100% duty-cycle operation?
Yes, the ADP5310AREZN-255R7 supports 100% duty-cycle operation in PWM mode for both Channel 1 and Channel 2. This allows regulation down to VOUT = VIN – VDS(ON), maintaining output voltage during deep battery discharge - critical for uninterrupted RTC and memory retention in energy metering systems using the ADP5310AREZN-255R7.
How is output voltage configured on the ADP5310AREZN-255R7?
Output voltage on the ADP5310AREZN-255R7 is factory-programmed: Channel 1 offers fixed options (1.2 V, 1.5 V, 1.8 V, 2.5 V, 2.85 V, 3.3 V, 5.0 V) via 3-bit trim; Channel 2 supports 1.2 V–5.0 V in 50 mV/100 mV steps via 8-bit trim. Adjustable mode uses external resistor dividers on FB1/FB2 with 0.800 V reference - confirmed in datasheet Tables 2 and ordering guide.
What protection features does the ADP5310AREZN-255R7 include?
The ADP5310AREZN-255R7 integrates UVLO (2.55 V rising threshold), overcurrent protection (1000–1450 mA on Channel 1; 450–730 mA on Channel 2), and thermal shutdown (135°C with 15°C hysteresis). All protections are per-channel and automatically recover after fault clearance - no external components required for basic fault resilience in the ADP5310AREZN-255R7.
Can the ADP5310AREZN-255R7 synchronize switching frequency to an external clock?
Yes, the ADP5310AREZN-255R7 accepts external synchronization via the SYNC/MODE pin across 400 kHz to 1.4 MHz, matching its internal 600 kHz or 1.2 MHz default frequencies. Input thresholds are 1.2 V (high) and 0.4 V (low), with pulse-on time ≥80 ns - enabling EMI reduction and noise-sensitive system timing alignment for the ADP5310AREZN-255R7.
ADP5310AREZN-255R7 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:
- 3
- Voltage - Input (Min):
- 2.7V
- Voltage - Input (Max):
- 15V
- Voltage - Output (Min/Fixed):
- 0.8V (2.55V)
- Voltage - Output (Max):
- 5V
- Current - Output:
- 50mA, 300mA, 800mA
- Frequency - Switching:
- 400kHz ~ 1.4MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-TSSOP-EP
ADP5310AREZN-255R7 FAQ
1.How can I place an order for ADP5310AREZN-255R7 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADP5310AREZN-255R7 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-255R7 reliable?
The price and inventory of ADP5310AREZN-255R7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADP5310AREZN-255R7 is usually 5 days.
3.What payment methods are accepted for ADP5310AREZN-255R7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADP5310AREZN-255R7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADP5310AREZN-255R7?
ADP5310AREZN-255R7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADP5310AREZN-255R7 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-255R7?
For technical support, including ADP5310AREZN-255R7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADP5310AREZN-255R7 requirements.
6.How does Aetrix verify that ADP5310AREZN-255R7 is sourced from the original manufacturer or authorized distributors?
All ADP5310AREZN-255R7 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-255R7 meets industry standards.
7.What is the process for return or replacement of ADP5310AREZN-255R7?
All ADP5310AREZN-255R7 units undergo pre-shipment inspection (PSI). If there is an issue with ADP5310AREZN-255R7, 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-255R7 part is unused and in its original packaging.
Return procedure for ADP5310AREZN-255R7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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