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Analog Devices Inc. ADP2370ACPZ-5.0-R7
- Part No.:
- ADP2370ACPZ-5.0-R7
- Manufacturer:
- Analog Devices Inc.
- Package:
- 8-WFDFN Exposed Pad, CSP
- Datasheet:
-
ADP2370ACPZ-5.0-R7.pdf
- Description:
- IC REG BUCK 5V 800MA 8LFCSP
- Quantity:
- Payment:
- Shipping:
Inventory:352
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Product details
Overview
ADP2370ACPZ-5.0-R7 from Analog Devices is a high-efficiency, low-quiescent-current 800 mA synchronous buck regulator with fixed 5.0 V output, 3.2 V to 15 V input range, and selectable 600 kHz/1.2 MHz switching frequency. It features power-good indication, precision enable, and 100% duty cycle capability for battery-powered portable equipment requiring stable, low-noise voltage conversion.
For engineers reviewing the ADP2370ACPZ-5.0-R7 datasheet, ADP2370ACPZ-5.0-R7 pinout, ADP2370ACPZ-5.0-R7 application, or ADP2370ACPZ-5.0-R7 equivalent, key selection criteria include quiescent current (<14 µA in PSM), ±1% initial output accuracy, thermal performance in the 3 mm × 3 mm LFCSP package, and compatibility with compact 53 mm² total solution size using only three external components.
Technical Context
The ADP2370ACPZ-5.0-R7 employs a proprietary high-speed current-mode, constant-frequency PWM control architecture optimized for stability and fast transient response. Its integrated high-side P-channel and low-side N-channel MOSFETs eliminate the need for an external rectifier and support synchronous operation across its full load range.
It operates in either forced PWM (FPWM) mode for noise-sensitive applications or automatic PWM/PSM mode to minimize quiescent current under light loads. Frequency selection is controlled via the FSEL pin (high = 1.2 MHz, low = 600 kHz), and synchronization to an external clock (400–800 kHz or 0.8–1.6 MHz) is supported via the SYNC pin.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3.2 V to 15 V - supports multi-cell alkaline/NiMH, single/dual Li-ion, and industrial DC rails. |
| Output Voltage | Fixed 5.0 V ±1% initial accuracy - eliminates external feedback resistors and simplifies layout. |
| Max Output Current | 800 mA - sufficient for powering microcontrollers, sensors, and interface ICs in portable systems. |
| Quiescent Current | <14 µA in power-saving mode - extends battery life in always-on or low-duty-cycle applications. |
| Switching Frequency | Selectable 600 kHz or 1.2 MHz - enables trade-off between efficiency, component size, and EMI profile. |
| Package | 8-lead 3 mm × 3 mm LFCSP (QFN) with exposed pad - provides low thermal resistance (θJA = 36.7°C/W) and requires PCB ground connection for thermal and electrical integrity. |
| Power-Good Output | Open-drain PG pin with 92% rising threshold - enables system-level power sequencing and fault monitoring. |
Pinout & Package
ADP2370ACPZ-5.0-R7 is housed in an 8-lead, 0.75 mm height, 3 mm × 3 mm LFCSP (QFN) package with an electrically connected exposed pad that must be soldered to the PCB ground plane for thermal management and optimal electrical performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN (Pin 1) | Power Input | Connects to unregulated input supply (3.2–15 V); decoupled with ≥10 µF ceramic capacitor near pin. |
| FSEL (Pin 2) | Frequency Select | Logic-high sets 1.2 MHz; logic-low sets 600 kHz - determines inductor size and EMI behavior. |
| EN (Pin 3) | Enable with Precision Threshold | Active-high enable with 1.135–1.26 V logic-high threshold; supports precise power sequencing. |
| SYNC (Pin 4) | Synchronization/FPWM Control | Accepts external clock (400–800 kHz or 0.8–1.6 MHz) or forces FPWM when held high. |
| FB (Pin 5) | Feedback | Internally connected to 5.0 V reference; not used in fixed-output variants like ADP2370ACPZ-5.0-R7. |
| PG (Pin 6) | Power-Good Output | Open-drain signal asserting when VOUT ≥92% of nominal - used for system reset or supervisor IC interfacing. |
| SW (Pin 7) | Switch Node | Connects to external inductor; carries high di/dt switching waveform - requires tight layout and ground return path. |
| PGND (Pin 8) | Power Ground | High-current return path for internal MOSFETs; must be tied to low-impedance ground plane adjacent to exposed pad. |
Key Features
| Feature | Design Value |
|---|---|
| 100% Duty Cycle Operation | Enables regulation down to VIN − VDROP, supporting ultra-low dropout in battery-critical applications (e.g., single-cell Li-ion down to ~3.2 V). |
| Internal Soft Start | 350 µs monotonic ramp prevents input inrush current and ensures reliable startup without external timing components. |
| Integrated Synchronous Rectification | Eliminates external Schottky diode, reducing BOM count and improving efficiency by up to 5% vs. asynchronous designs. |
| Undervoltage Lockout (UVLO) | 3.19 V rising / 2.80 V falling thresholds prevent deep battery discharge and ensure clean power-up/down behavior. |
| Thermal & Short-Circuit Protection | 150°C thermal shutdown with 15°C hysteresis and cycle-by-cycle current limiting protect against sustained overload or poor heatsinking. |
Applications
| Portable Medical Sensors | Smart Meter RF Modules |
|---|---|
Use Scenario: Powering low-power pulse oximeters and glucose monitors operating from coin-cell or AA batteries with multi-year runtime requirements. IC Role / Device Role / Timing Role: Primary 5 V supply for analog front-end, MCU, and BLE radio subsystems. Use Value: <14 µA quiescent current in PSM mode directly extends battery life; 100% duty cycle maintains regulation as battery discharges to 3.2 V. |
Use Scenario: Providing regulated 5 V rail to sub-GHz RF transceivers (e.g., TI CC1310) in automatic meter reading (AMR) endpoints deployed in remote locations. IC Role / Device Role / Timing Role: High-efficiency step-down converter enabling long-life operation on primary lithium thionyl chloride cells. Use Value: >90% peak efficiency at 250 mA and 92% at 100 mA minimizes self-heating and preserves battery capacity over decades. |
| POS Terminal Peripherals | Industrial Handheld Scanners |
Use Scenario: Supplying 5 V to USB peripherals (printers, card readers) in battery-backed point-of-sale terminals with intermittent high-current bursts. IC Role / Device Role / Timing Role: Compact, robust DC/DC stage delivering fast transient response during barcode scan or thermal print activation. Use Value: Fast load transient recovery (e.g., 100 mA → 800 mA in <50 µs) prevents brownout of connected USB devices. |
Use Scenario: Generating 5 V for image sensor, laser diode driver, and ARM Cortex-M7 MCU in ruggedized handheld scanners used in warehouses and logistics. IC Role / Device Role / Timing Role: Main power converter meeting extended temperature (−40°C to +85°C) and shock/vibration requirements. Use Value: Specified operation across −40°C to +125°C junction temperature ensures reliability in uncontrolled ambient environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS62840DLCR | Lower IQ (300 nA in shutdown, 250 nA in DCM), but max IOUT = 600 mA and fixed 5.0 V option not available - requires external resistor divider. | Better suited for ultra-low-power IoT nodes where <1 µA sleep current dominates design; less ideal for 800 mA peak loads. | Select TPS62840DLCR only if system sleep current is critical and peak load ≤600 mA; ADP2370ACPZ-5.0-R7 remains preferred for higher current or simpler fixed-VOUT implementation. |
| MP2451DT-LF-Z | Higher IQ (~40 µA), no PSM mode, no PG output, and only 600 kHz fixed frequency - lacks frequency select, sync, and precision enable. | Targeted at cost-sensitive, non-battery applications where efficiency at medium load matters more than light-load IQ or sequencing control. | Choose MP2451DT-LF-Z for basic industrial supplies where PG, soft start, and low-IQ are nonessential; ADP2370ACPZ-5.0-R7 delivers superior integration for portable designs. |
Compared with TPS62840DLCR and MP2451DT-LF-Z, ADP2370ACPZ-5.0-R7 uniquely combines 800 mA capability, fixed 5.0 V output, <14 µA PSM quiescent current, power-good signaling, and dual-frequency flexibility - making it the most balanced choice for space-constrained, battery-operated systems demanding both efficiency and robustness.
Availability
ADP2370ACPZ-5.0-R7 is available at Aetrix Electronics and suitable for portable medical sensors, smart meter RF modules, POS terminal peripherals, and industrial handheld scanners requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.
Supply support for ADP2370ACPZ-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, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, headquartered in Norwood, MA, with engineering expertise spanning precision power, signal chain, and RF technologies.
The ADP2370ACPZ-5.0-R7 belongs to Analog Devices' ADP237x family of high-efficiency, low-IQ buck regulators designed specifically for battery-powered portable and wireless sensing applications where small solution size and extended runtime are critical.
FAQ
What is the maximum input voltage rating for the ADP2370ACPZ-5.0-R7?
The ADP2370ACPZ-5.0-R7 has an absolute maximum input voltage rating of +17 V relative to PGND, but its recommended operating input voltage range is 3.2 V to 15 V. Operating above 15 V may compromise reliability or violate functional specifications, even if within absolute ratings. Always refer to the ADP2370ACPZ-5.0-R7 datasheet Section "Absolute Maximum Ratings" for safe design margins.
Does the ADP2370ACPZ-5.0-R7 require external feedback resistors to set the 5.0 V output?
No. The ADP2370ACPZ-5.0-R7 is a fixed-output variant with the 5.0 V reference internally trimmed and connected to the FB pin. External feedback resistors are unnecessary and should not be added; the FB pin is reserved and must remain unconnected per the ADP2370ACPZ-5.0-R7 datasheet Pin Function Descriptions.
How does the FSEL pin affect switching frequency in the ADP2370ACPZ-5.0-R7?
In the ADP2370ACPZ-5.0-R7, the FSEL pin selects between two nominal switching frequencies: logic-high (≥1 V) configures 1.2 MHz operation, while logic-low (≤0.4 V) configures 600 kHz operation. This selection directly impacts inductor value, output capacitor ESR requirements, and EMI filter design - confirmed in ADP2370ACPZ-5.0-R7 Table 4 (Oscillator Frequency).
Is the exposed thermal pad on the ADP2370ACPZ-5.0-R7 electrically connected to ground?
Yes. The exposed pad on the bottom of the ADP2370ACPZ-5.0-R7 package is electrically connected to ground inside the IC and must be soldered to a PCB ground plane. This connection is mandatory for both thermal performance (θJA = 36.7°C/W) and electrical stability, as stated in ADP2370ACPZ-5.0-R7 Figure 2 note and Pin Function Descriptions.
What protection features are integrated into the ADP2370ACPZ-5.0-R7?
The ADP2370ACPZ-5.0-R7 integrates undervoltage lockout (UVLO), thermal shutdown (150°C with 15°C hysteresis), short-circuit protection via cycle-by-cycle current limiting, and soft-start circuitry. These features are fully specified in the ADP2370ACPZ-5.0-R7 datasheet Sections "Features", "Specifications", and "Theory of Operation".
ADP2370ACPZ-5.0-R7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 8-WFDFN Exposed Pad, CSP
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 3.2V
- Voltage - Input (Max):
- 15V
- Voltage - Output (Min/Fixed):
- 5V
- Voltage - Output (Max):
- -
- Current - Output:
- 800mA
- Frequency - Switching:
- 600kHz ~ 1.2MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-LFCSP-WD (3x3)
ADP2370ACPZ-5.0-R7 FAQ
1.How can I place an order for ADP2370ACPZ-5.0-R7 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADP2370ACPZ-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 ADP2370ACPZ-5.0-R7 reliable?
The price and inventory of ADP2370ACPZ-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 ADP2370ACPZ-5.0-R7 is usually 5 days.
3.What payment methods are accepted for ADP2370ACPZ-5.0-R7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADP2370ACPZ-5.0-R7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADP2370ACPZ-5.0-R7?
ADP2370ACPZ-5.0-R7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADP2370ACPZ-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 ADP2370ACPZ-5.0-R7?
For technical support, including ADP2370ACPZ-5.0-R7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADP2370ACPZ-5.0-R7 requirements.
6.How does Aetrix verify that ADP2370ACPZ-5.0-R7 is sourced from the original manufacturer or authorized distributors?
All ADP2370ACPZ-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 ADP2370ACPZ-5.0-R7 meets industry standards.
7.What is the process for return or replacement of ADP2370ACPZ-5.0-R7?
All ADP2370ACPZ-5.0-R7 units undergo pre-shipment inspection (PSI). If there is an issue with ADP2370ACPZ-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 ADP2370ACPZ-5.0-R7 part is unused and in its original packaging.
Return procedure for ADP2370ACPZ-5.0-R7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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