Analog Devices Inc. ADP3630ARMZ-R7

Overview

ADP3630ARMZ-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) and overtemperature warning/shutdown. It is used in synchronous rectification stages of AC/DC and DC/DC converters.

For engineers reviewing the ADP3630ARMZ-R7 datasheet, ADP3630ARMZ-R7 pinout, ADP3630ARMZ-R7 application, or ADP3630ARMZ-R7 equivalent, key selection criteria include its 8-lead MSOP package, noninverting input logic per channel, 3.3 V-compatible digital inputs, UVLO with hysteresis, and open-drain OTW flag for thermal monitoring in high-reliability power systems.

Technical Context

The ADP3630ARMZ-R7 implements two independent noninverting low-side gate drivers with internal VDD-to-PGND biasing and robust output stage design enabling ±2 A transient current delivery. Its input structure accepts 3.3 V logic while tolerating up to VDD-level signals, and includes internal pull-downs to ensure MOSFETs remain off during floating-input conditions.

It integrates dual-level thermal protection: an overtemperature warning (OTW) flag triggers at 120°C–150°C (active-low open drain), and hard shutdown activates at 150°C–180°C. The SD pin uses a precision comparator with 240–320 mV hysteresis for reliable fault-driven system disable, supporting redundant overvoltage or overcurrent protection schemes.

Key Specifications

Pinout & Package

ADP3630ARMZ-R7 is housed in an 8-lead Mini Small Outline Package (MSOP, RM-8), 3.0 mm × 3.0 mm body size, 0.65 mm lead pitch, with exposed pad for thermal enhancement. Pin 1 is marked by a dot or bevelled corner.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADP3630ARMZ-R7, ADP3629ARMZ-R7 offers identical performance in a functionally inverted configuration-requiring signal polarity adaptation-while LM5112MMX/NOPB trades integrated thermal intelligence for higher drive strength and broader supply flexibility, necessitating additional support circuitry for safe thermal management.

Availability

ADP3630ARMZ-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, RoHS-compliant packaging, and long-term industrial temperature support (−40°C to +85°C).

Supply support for ADP3630ARMZ-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, headquartered in Norwood, MA, with deep expertise in precision power management and signal conditioning.

The ADP36xx family was engineered specifically for high-efficiency, high-frequency switching power conversion systems, emphasizing robust gate drive, thermal resilience, and seamless integration with digital power controllers.

FAQ

What is the logic configuration of the ADP3630ARMZ-R7 inputs?

The ADP3630ARMZ-R7 features noninverting input logic on both channels: a high signal on INA drives OUTA high, and a high signal on INB drives OUTB high. This eliminates the need for external inverters in standard PWM architectures and simplifies interface with microcontrollers or digital power controllers that output active-high gate signals. The ADP3630ARMZ-R7 datasheet confirms this behavior in Table 5 and Figure 8.

Does the ADP3630ARMZ-R7 support parallel operation of its two output channels?

Yes, the ADP3630ARMZ-R7 supports parallel operation: INA and INB are tied together, and OUTA and OUTB are connected to drive a single high-current MOSFET gate. This configuration doubles peak current capability and reduces thermal stress per channel. Layout symmetry and matched trace lengths are critical to ensure balanced current sharing, as detailed in Figure 25 of the ADP3630ARMZ-R7 datasheet.

What is the purpose and electrical behavior of the OTW pin on the ADP3630ARMZ-R7?

The OTW (Overtemperature Warning) pin on the ADP3630ARMZ-R7 is an open-drain, active-low output that asserts when the junction temperature reaches 120°C–150°C. It sinks current when active and remains high-impedance otherwise. This allows multiple ADP3630ARMZ-R7 devices to share a single warning bus via wire-OR connection, enabling centralized thermal monitoring in multi-rail power systems without additional logic.

Can the ADP3630ARMZ-R7 operate with a 3.3 V logic supply while powered from a 12 V VDD rail?

Yes, the ADP3630ARMZ-R7 accepts 3.3 V-compatible input logic levels (VIH ≥ 2.0 V, VIL ≤ 0.8 V) while operating from a separate 9.5–18 V VDD supply. Its input structure tolerates voltages up to VDD, allowing direct interfacing with low-voltage digital controllers (e.g., ADP1043, UCD3138) without level shifters. This dual-supply independence is explicitly specified in the "Digital Inputs" section of the ADP3630ARMZ-R7 datasheet.

What package type and thermal characteristics does the ADP3630ARMZ-R7 use?

The ADP3630ARMZ-R7 is packaged in an 8-lead MSOP (RM-8) with 3.0 mm × 3.0 mm footprint and 0.65 mm lead pitch. Its thermal resistance θJA is 162.2°C/W on a standard 4-layer board per JEDEC JESD51-7. The exposed pad enhances thermal conduction; proper soldering to a thermal pad on the PCB is essential to achieve rated performance and avoid junction temperature exceedance under sustained 2 A peak loads.