Analog Devices Inc. ADP3630ARZ-R7

Overview

ADP3630ARZ-R7 from Analog Devices is a dual, noninverting, high-speed MOSFET driver IC designed for low-side N-channel power MOSFET gate driving in switching power supplies. It delivers ±2 A peak source/sink current, achieves 10 ns typical rise/fall times at 2.2 nF load, operates from 9.5 V to 18 V supply, and features matched propagation delays (≤2 ns mismatch) between channels. It is used in synchronous rectification stages of AC/DC and DC/DC converters.

For engineers reviewing the ADP3630ARZ-R7 datasheet, ADP3630ARZ-R7 pinout, ADP3630ARZ-R7 application, or ADP3630ARZ-R7 equivalent, key selection criteria include its noninverting input configuration, SOIC_N-8 package, UVLO with hysteresis (8.7 V turn-on), overtemperature warning flag (OTW), and 3.3 V-compatible logic inputs - all critical for robust, high-frequency power stage control.

Technical Context

The ADP3630ARZ-R7 implements two independent noninverting low-side drivers with internal biasing referenced to PGND and VDD. Its input stage accepts 3.3 V logic while tolerating up to VDD, and includes internal pull-downs to ensure MOSFETs remain off during floating inputs. The SD pin uses a precision comparator with 280 mV hysteresis for reliable shutdown signaling.

Thermal protection comprises two distinct thresholds: overtemperature warning (TW = 135°C typ.) asserted via open-drain OTW, and hard shutdown (TSD = 165°C typ.) disabling both outputs. Propagation delays are tightly matched (tD1 = 14–30 ns, tD2 = 22–35 ns), enabling precise timing in dual-phase or paralleled configurations.

Key Specifications

Pinout & Package

ADP3630ARZ-R7 is housed in an 8-lead SOIC_N (R-8) package per JEDEC MS-012-AA, with 1.27 mm lead pitch and exposed pad not present. Thermal resistance θJA = 110.6°C/W on a 4-layer board.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual low-side MOSFET driver applications.

Compared with TC4427ACOA and MIC4422YM, the ADP3630ARZ-R7 provides superior thermal intelligence (OTW + shutdown), tighter timing control (≤2 ns delay match), and safer startup behavior (UVLO hysteresis), making it optimal for high-reliability, high-density power systems where diagnostics and timing precision are critical.

Availability

ADP3630ARZ-R7 is available at Aetrix Electronics and suitable for AC/DC switch mode power supplies, DC/DC buck converters, and synchronous rectification applications requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.

Supply support for ADP3630ARZ-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 ADP36xx family was engineered specifically for high-efficiency, high-frequency power conversion systems - delivering fast, robust, and thermally aware gate drive for next-generation SMPS, VRMs, and motor controllers.

FAQ

What is the input logic configuration of the ADP3630ARZ-R7?

The ADP3630ARZ-R7 features noninverting inputs on both channels (INA and INB): a high input drives OUTA or OUTB high, and a low input drives the corresponding output low. This eliminates the need for external inverters in standard PWM control schemes and simplifies integration with digital controllers. Unlike the ADP3629 or ADP3631, the ADP3630ARZ-R7 does not include inverting inputs - its pinout and function are strictly noninverting per channel.

Does the ADP3630ARZ-R7 support paralleling of its two output channels?

Yes, the ADP3630ARZ-R7 supports safe paralleling of OUTA and OUTB to deliver up to ±4 A peak current. To implement this, connect INA to INB and tie OUTA directly to OUTB. Layout symmetry and matched trace lengths are essential to ensure current sharing. The ≤2 ns propagation delay matching between channels minimizes timing skew that could cause imbalance or shoot-through in the paralleled configuration.

What is the purpose and electrical behavior of the OTW pin on the ADP3630ARZ-R7?

The OTW (Overtemperature Warning) pin on the ADP3630ARZ-R7 is an open-drain, active-low output that asserts when the junction temperature reaches ~135°C (typical). In normal operation, it remains high (pulled up externally); when the warning threshold is crossed, it pulls low. Multiple ADP3630ARZ-R7 units can share a single OTW bus in wire-OR fashion, enabling centralized thermal monitoring across multi-rail power systems without additional logic.

How does the SD (Shutdown) pin function on the ADP3630ARZ-R7, and what voltage thresholds apply?

The SD pin on the ADP3630ARZ-R7 is an active-high shutdown input with an internal precision comparator. It triggers shutdown when voltage exceeds 1.28 V (typical), with 280 mV hysteresis - meaning it releases at ~1.0 V. An internal pull-up requires external pull-down (e.g., to MCU GPIO) for normal operation. This architecture allows direct connection to scaled-down bus voltages for redundant overvoltage protection without external comparators.

What package type and thermal performance does the ADP3630ARZ-R7 use?

The ADP3630ARZ-R7 is supplied in an 8-lead SOIC_N (R-8) package compliant with JEDEC MS-012-AA, with θJA = 110.6°C/W on a standard 4-layer PCB. Its narrow-body outline (3.9 mm × 4.9 mm) supports high-density layouts, and the exposed pad-free construction simplifies assembly. For thermally constrained designs, the SOIC_N variant offers significantly better heat dissipation than the MSOP option (θJA = 162.2°C/W), extending safe operating area at elevated ambient temperatures.