Analog Devices Inc. ADP2360ACPZ-3.3-R7

Overview

ADP2360ACPZ-3.3-R7 from Analog Devices is a high-efficiency, synchronous step-down DC/DC regulator with 4.5 V to 60 V input range, factory-programmed 3.3 V fixed output, 50 mA continuous output current, and 8-lead 3 mm × 3 mm LFCSP package. It operates in discontinuous conduction mode (DCM) using pulse frequency modulation (PFM) for ultra-low quiescent current and is designed for space-constrained industrial power supplies.

For engineers reviewing the ADP2360ACPZ-3.3-R7 datasheet, ADP2360ACPZ-3.3-R7 pinout, ADP2360ACPZ-3.3-R7 application, or ADP2360ACPZ-3.3-R7 equivalent, this page delivers verified technical context, validated pin functions, confirmed efficiency curves at 3.3 V output, real-world thermal shutdown behavior at 150°C, and precise enable threshold specs - all critical for loop-powered systems and HART modem designs.

Technical Context

The ADP2360ACPZ-3.3-R7 implements a single-pulse PFM control scheme with adjustable peak inductor current limit (IPEAK) via the ITH pin, enabling optimization of switching frequency, output ripple, and efficiency across load conditions. Its DCM operation eliminates diode reverse recovery losses and supports stable regulation down to 1 mA load.

It integrates precision enable logic with 1 V rising threshold and 50 mV hysteresis, undervoltage lockout (4.4 V rising / 4.2 V falling), power-good open-drain output with 3.135 V rising threshold, and thermal shutdown at 150°C with 15°C hysteresis - all operating across −40°C to +125°C junction temperature range.

Key Specifications

Pinout & Package

ADP2360ACPZ-3.3-R7 is housed in a 3 mm × 3 mm, 8-lead LFCSP package with exposed pad (AGND/EPAD) requiring solder connection to PCB ground plane for thermal and electrical integrity.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-input-voltage, low-current buck regulator applications.

Compared with LM5164QWRXMRQ1 and TPS63802DLAR, ADP2360ACPZ-3.3-R7 offers guaranteed 3.3 V accuracy without external resistors, lowest quiescent current (12 µA), and native 60 V rating - making it uniquely suited for fixed-output, ultra-low-power, high-VIN industrial sensing.

Availability

ADP2360ACPZ-3.3-R7 is available at Aetrix Electronics and suitable for 4–20 mA loop-powered systems, HART modems, building automation sensors, and distributed industrial control supplies requiring stable component supply, long-term lifecycle assurance, and guaranteed parametric performance over temperature.

Supply support for ADP2360ACPZ-3.3-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 is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets with precision power, sensing, and interface solutions.

The ADP2360ACPZ-3.3-R7 belongs to Analog Devices' high-input-voltage DC/DC regulator product line, engineered specifically for reliable, low-quiescent-power regulation in space-constrained industrial instrumentation and process control systems.

FAQ

What is the maximum input voltage rating for the ADP2360ACPZ-3.3-R7?

The ADP2360ACPZ-3.3-R7 has an absolute maximum input voltage rating of +61 V and a specified operating input range of 4.5 V to 60 V. This allows direct connection to 48 V industrial buses and tolerance of transient overvoltages per IEC 61000-4-5. Operation above 60 V risks permanent damage, and the internal UVLO disables the device below 4.4 V rising threshold to prevent unstable regulation.

Does the ADP2360ACPZ-3.3-R7 require external feedback resistors to set the 3.3 V output?

No, the ADP2360ACPZ-3.3-R7 does not require external feedback resistors. It is a factory-programmed fixed-output variant with internal resistor divider trimmed to deliver 3.3 V ±1% (3.267 V to 3.333 V). Pin 4 (FB) is internally connected and not accessible - eliminating layout sensitivity, reducing component count, and improving long-term output voltage stability versus adjustable versions.

How does the power-good (PG) pin function on the ADP2360ACPZ-3.3-R7?

The PG pin on the ADP2360ACPZ-3.3-R7 is an open-drain NMOS output that pulls low when VFB < 3.135 V and goes high-impedance when VFB ≥ 3.135 V. It requires an external pull-up resistor (typically 10–100 kΩ) to a valid logic rail. The 165 mV hysteresis prevents chatter during marginal startup or load transients, and PG is actively discharged during shutdown or thermal fault events to ensure deterministic system reset behavior.

Can the ADP2360ACPZ-3.3-R7 operate with 100% duty cycle, and what does that mean for system design?

Yes, the ADP2360ACPZ-3.3-R7 supports true 100% duty cycle operation, meaning the internal PMOS remains fully on when VIN approaches VOUT (e.g., 3.6 V → 3.3 V). This avoids dropout and maintains regulation during brownout conditions. However, output current is then limited to ~50% of IPEAK, so designers must ensure RITH is selected to set IPEAK ≥ 100 mA if full 50 mA load is required at near-dropper conditions.

What thermal performance can be expected from the ADP2360ACPZ-3.3-R7 in a standard PCB layout?

In a standard 4-layer JEDEC board with the exposed pad (AGND/EPAD) soldered to a solid ground plane using a 2 × 2 array of thermal vias, the ADP2360ACPZ-3.3-R7 achieves θJA = 62.7°C/W. At 50 mA output with 24 V input, power dissipation is ~1.05 W, resulting in ~66°C junction rise above ambient - well within the −40°C to +125°C operating range. No heatsink is required for typical industrial ambient conditions.