Analog Devices Inc. ADP5074ACPZ-R7

Overview

ADP5074ACPZ-R7 from Analog Devices is a high-performance DC-to-DC inverting regulator IC designed to generate stable negative supply rails. It features a 2.4 A integrated main switch, 2.85 V to 15 V input range, adjustable negative output down to VIN − 39 V, 1.2 MHz/2.4 MHz selectable switching frequency, and precision power-good signaling - enabling use in RF PA bias, high-speed ADC/DAC supplies, and optical module power systems.

For engineers reviewing the ADP5074ACPZ-R7 datasheet, ADP5074ACPZ-R7 pinout, ADP5074ACPZ-R7 application, or ADP5074ACPZ-R7 equivalent, key selection considerations include its LFCSP-16 package thermal performance, slew-rate programmable EMI control, resistor-programmable soft start, and dual-input (PVIN/AVIN) architecture for optimized noise isolation in sensitive analog signal chains.

Technical Context

The ADP5074ACPZ-R7 implements a fixed-frequency PWM-controlled inverting topology with internal phase-locked loop (PLL) oscillator supporting 1.2 MHz or 2.4 MHz operation - selectable via SYNC/FREQ pin logic level or externally synchronized from 1.0 MHz to 2.6 MHz. Its error amplifier drives a current-mode control loop that regulates output by modulating peak inductor current against a 1.60 V reference.

It integrates separate AVIN (system logic supply) and PVIN (power switch supply) inputs, enabling independent noise management; includes programmable slew rate control at the SW node via SLEW pin connection (GND/VREG/open), and delivers true shutdown with complete load disconnection. Protection includes UVLO (2.85 V rising), OCP (2.4 A nominal), OVP on FB pin (0.74 V threshold), and thermal shutdown at 150°C with 15°C hysteresis.

Key Specifications

Pinout & Package

ADP5074ACPZ-R7 is housed in a 3 mm × 3 mm, 16-lead Lead Frame Chip Scale Package (LFCSP) with exposed thermal pad. The package supports −40°C to +125°C junction temperature operation and requires soldering per JEDEC J-STD-020. Pins 14–16 and EPAD must be connected to PCB ground plane for thermal and electrical integrity.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADP5074ACPZ-R7, ADP5073ACPZ-R7 offers identical footprint but reduced current and feature set, while LM27762DSGR trades inductor dependency for lower peak current and narrower voltage range - making ADP5074ACPZ-R7 the sole choice for high-current, wide-output, thermally demanding inverting regulation.

Availability

ADP5074ACPZ-R7 is available at Aetrix Electronics and suitable for RF power amplifier bias, high-speed data converter supplies, and optical transceiver module designs requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.

Supply support for ADP5074ACPZ-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.

The ADP5074ACPZ-R7 belongs to Analog Devices' precision DC-to-DC inverting regulator product line, engineered specifically for noise-sensitive analog systems requiring tightly regulated negative voltages with advanced protection and sequencing features.

FAQ

What is the maximum negative output voltage achievable with the ADP5074ACPZ-R7?

The ADP5074ACPZ-R7 supports an adjustable negative output down to VIN − 39 V. With a 15 V input, this enables up to −24 V output; with a 3.3 V input, it achieves −35.7 V. This capability is enabled by its 39 V maximum drain-source voltage rating on the internal power FET, as specified in the Absolute Maximum Ratings table.

How does the SLEW pin affect efficiency and EMI performance of the ADP5074ACPZ-R7?

The SLEW pin on the ADP5074ACPZ-R7 configures the MOSFET driver slew rate: open = fastest (highest efficiency, highest EMI), VREG = normal (balanced), GND = slowest (lowest EMI, ~3–5% efficiency penalty). This trade-off is confirmed in Figure 22 and Theory of Operation section, where slower slew reduces ringing and conducted emissions without requiring external RC networks.

Can the ADP5074ACPZ-R7 synchronize to an external clock, and what are the valid frequency and timing constraints?

Yes, the ADP5074ACPZ-R7 can synchronize to an external clock applied to the SYNC/FREQ pin across 1.0 MHz to 2.6 MHz. Valid input requires minimum high/low pulse widths of 100 ns each, logic-high ≥1.3 V, and logic-low ≤0.4 V. The internal PLL locks to the external clock, ensuring jitter-free operation - critical for noise-sensitive RF and high-speed data converter applications.

What is the purpose of the dual input pins (PVIN and AVIN) on the ADP5074ACPZ-R7, and how should they be decoupled?

PVIN supplies the high-current power switch; AVIN powers control circuitry, references, and regulators. They must be decoupled separately: ≥5.6 µF ceramic on PVIN and ≥3.3 µF on AVIN, both placed as close as possible to their respective pins. This separation minimizes coupling of switching noise into analog references, directly improving PSRR and output voltage accuracy as validated in load/line regulation test data.

Does the ADP5074ACPZ-R7 provide true load disconnect during shutdown, and how is it implemented?

Yes, the ADP5074ACPZ-R7 implements true shutdown by completely disconnecting the load from the input supply via internal MOSFET control. When EN is pulled below 0.4 V, the device disables switching and opens the power path - verified by zero output current in shutdown mode and absence of reverse current flow. This prevents battery drain and unintended biasing in portable and always-on systems.