Analog Devices Inc. ADP5034AREZ-1-R7

Overview

ADP5034AREZ-1-R7 from Analog Devices is a dual 3 MHz, 1200 mA buck regulator with two 300 mA low-dropout (LDO) regulators in a single 24-lead 4 mm × 4 mm LFCSP package. It delivers tightly regulated power to processor cores, I/O rails, and noise-sensitive analog/digital subsystems in space-constrained portable electronics. Key confirmed specs: ±1.8% output voltage accuracy, 3 MHz switching frequency, 2.3 V–5.5 V main input range, and independent enable pins for all four regulators.

For engineers reviewing the ADP5034AREZ-1-R7 datasheet, ADP5034AREZ-1-R7 pinout, ADP5034AREZ-1-R7 application, or ADP5034AREZ-1-R7 equivalent, this page provides verified package mapping, validated pin functions, real-world load regulation data across temperature, PSRR performance at 10 kHz–1 MHz, and direct alternative comparisons for multi-rail PMIC selection.

Technical Context

The ADP5034AREZ-1-R7 integrates two out-of-phase buck regulators operating at 3 MHz to minimize input capacitor requirements and reduce EMI. Each buck supports 0.8 V–3.8 V output via external feedback resistors or factory-programmed values, with forced PWM or auto PWM/PSM mode selection via the MODE pin.

Its two LDOs accept 1.7 V–5.5 V inputs and deliver 0.8 V–5.2 V outputs with high PSRR (>60 dB at 10 kHz), low output noise (60 µV rms for LDO2), and dropout as low as 50 mV at 300 mA. All regulators feature dedicated enable pins, thermal shutdown at 150°C, and independent power-good signaling via VOUT sensing pins.

Key Specifications

Pinout & Package

ADP5034AREZ-1-R7 uses a 24-lead, 4 mm × 4 mm LFCSP package with exposed pad (EPAD) for thermal management. The package is RoHS-compliant and rated for −40°C to +125°C junction temperature.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar multi-rail PMIC applications.

Compared with ADP5034AREZ-1-R7, the ADP5034ACBZ-1-R7 offers identical functionality in a larger, more manufacturable package, while the TPS65023RSBR provides lower integration and reduced current capacity - making ADP5034AREZ-1-R7 the optimal choice for high-density, high-current portable designs requiring dual LDOs.

Availability

ADP5034AREZ-1-R7 is available at Aetrix Electronics and suitable for portable medical monitors, FPGA power management, handheld test equipment, and industrial IoT sensor nodes requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for ADP5034AREZ-1-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 since 1965.

The ADP5034 belongs to Analog Devices' Power Management Unit (PMU) product line, designed specifically for space-constrained, multi-rail applications in portable instrumentation, medical devices, and embedded computing platforms.

FAQ

What is the maximum supported input voltage for the buck regulators in ADP5034AREZ-1-R7?

The buck regulators (BUCK1 and BUCK2) in ADP5034AREZ-1-R7 accept an input voltage range of 2.3 V to 5.5 V. This is explicitly specified in Table 2 of the Rev. E datasheet under "INPUT VOLTAGE RANGE" for VAVIN, VIN1, and VIN2. Operation outside this range risks damage or undefined behavior, and absolute maximum rating for AVIN to AGND is limited to −0.3 V to +6 V.

Does ADP5034AREZ-1-R7 support independent power sequencing between its four regulators?

Yes, ADP5034AREZ-1-R7 supports full independent sequencing via four dedicated enable pins: EN1 (BUCK1), EN2 (BUCK2), EN3 (LDO1), and EN4 (LDO2). Each pin is logic-high active with defined VIH (≥1.1 V) and VIL (≤0.4 V) thresholds, enabling precise turn-on/off timing control for complex power-up sequences required in FPGAs and SoCs.

What is the typical output noise performance of the LDOs in ADP5034AREZ-1-R7?

The LDOs in ADP5034AREZ-1-R7 deliver low output noise: LDO2 measures 60 µV rms (10 Hz–100 kHz, VIN4 = 5 V, VOUT4 = 1.2 V), and LDO1 measures 100 µV rms (10 Hz–100 kHz, VIN3 = 5 V, VOUT3 = 2.8 V), as specified in Table 4 of the Rev. E datasheet. This performance enables use in RF and precision analog signal chains without additional filtering.

Can ADP5034AREZ-1-R7 operate in forced PWM mode across all load conditions?

Yes, ADP5034AREZ-1-R7 operates in forced PWM mode when the MODE pin is driven high. In this mode, both buck regulators maintain constant 3 MHz switching regardless of load current - ensuring predictable EMI profile and eliminating frequency modulation artifacts in noise-sensitive applications.

What package type and thermal resistance does ADP5034AREZ-1-R7 use?

ADP5034AREZ-1-R7 uses a 24-lead, 4 mm × 4 mm LFCSP package with exposed pad. Its thermal resistance is θJA = 35°C/W and θJC = 3°C/W, as documented in Table 7 of the Rev. E datasheet. This package enables efficient heat dissipation in compact layouts, supporting continuous 1200 mA operation with proper PCB copper area under the EPAD.