Analog Devices Inc. ADP2165ACPZ-R7

Overview

ADP2165ACPZ-R7 from Analog Devices is a 5 A, synchronous step-down DC-DC regulator with integrated 19 mΩ high-side and 15 mΩ low-side MOSFETs, 0.6 V ±1% reference voltage, 2.7 V to 5.5 V input range, and output tracking capability-designed for point-of-load regulation in FPGA core voltage sequencing.

For engineers reviewing the ADP2165ACPZ-R7 datasheet, ADP2165ACPZ-R7 pinout, ADP2165ACPZ-R7 application, or ADP2165ACPZ-R7 equivalent, key selection factors include its 5 A continuous output current, programmable 250 kHz–1.4 MHz switching frequency, precision enable threshold (1.2 V), power-good output with 16-cycle deglitch, and support for startup into precharged outputs.

Technical Context

The ADP2165ACPZ-R7 employs current-mode PWM control with an internal error amplifier (500 µS transconductance) and slope compensation, enabling fast transient response and stable loop behavior with external compensation. Its dual-path feedback architecture compares FB against either soft-start ramp or TRK input, selecting the lowest to enforce precise voltage tracking during power-up sequencing.

It integrates protection features including hiccup-mode overcurrent limiting (8 A typical peak limit), thermal shutdown at 150°C with 25°C hysteresis, overvoltage protection triggered at 0.7 V on FB, and undervoltage lockout on AVIN (2.7 V turn-on threshold). The bootstrap circuit supports high-side gate drive using a 0.1 µF BST–SW capacitor.

Key Specifications

Pinout & Package

ADP2165ACPZ-R7 is housed in a 24-lead, 4 mm × 4 mm LFCSP package with exposed thermal pad soldered to PCB ground plane for enhanced thermal dissipation (θ_JA = 38.3°C/W).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar synchronous buck regulator applications.

Compared with TPS54560RGTT and MP2359DJ-LF-Z, the ADP2165ACPZ-R7 uniquely combines 5 A capability with true output tracking, precharged startup, and precision enable/PGOOD - making it the only option among the three qualified for FPGA core voltage sequencing in medical and telecom infrastructure.

Availability

ADP2165ACPZ-R7 is available at Aetrix Electronics and suitable for FPGA power sequencing, industrial PLC I/O supplies, medical imaging sensor bias, and 5G small cell baseband regulation requiring stable component supply and long-term production continuity.

Supply support for ADP2165ACPZ-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, communications, and industrial markets since 1965.

The ADP2165ACPZ-R7 belongs to Analog Devices' ADP216x family of high-efficiency synchronous buck regulators, engineered specifically for compact, high-current point-of-load applications demanding accurate voltage tracking and robust sequencing in space-constrained systems.

FAQ

What is the maximum continuous output current supported by the ADP2165ACPZ-R7?

The ADP2165ACPZ-R7 supports 5 A continuous output current under typical thermal conditions (θ_JA = 38.3°C/W, 4-layer PCB). Its peak current limit is 8 A (typical), and thermal shutdown activates at 150°C junction temperature with 25°C hysteresis. Derating is required above 60°C ambient or with reduced copper area.

Does the ADP2165ACPZ-R7 support startup into a precharged output voltage?

Yes, the ADP2165ACPZ-R7 supports startup into a precharged output. Its internal circuitry prevents reverse inductor current during soft start by holding the low-side FET off until the soft-start voltage exceeds the FB voltage. This avoids discharging the output capacitor and ensures safe, controlled ramp-up even when V_OUT is initially biased.

How is output voltage accuracy maintained across temperature for the ADP2165ACPZ-R7?

The ADP2165ACPZ-R7 maintains output voltage accuracy via a 0.6 V ±1% reference voltage over −40°C to +125°C junction temperature. Figure 12 in the datasheet shows FB voltage variation of <±2 mV across temperature, ensuring <±1.7% total output error for a 1.2 V design using standard 1% resistors.

Can the ADP2165ACPZ-R7 synchronize to an external clock, and what is the valid frequency range?

Yes, the ADP2165ACPZ-R7 can synchronize to an external clock applied to the SYNC pin across 250 kHz to 1.4 MHz. The RT pin configures phase alignment: floating for in-phase, tied to VREG for 180° out-of-phase. Minimum SYNC pulse width and off time are both 100 ns, supporting standard logic-level clocks.

What package type and thermal characteristics apply to the ADP2165ACPZ-R7?

The ADP2165ACPZ-R7 uses a 24-lead, 4 mm × 4 mm LFCSP package with exposed thermal pad. Its thermal resistance is θ_JA = 38.3°C/W on a JEDEC 4-layer board. The exposed pad must be soldered to a solid ground plane for optimal heat dissipation and electrical performance.