ADP3118JRZ Half-Bridge Gate Driver IC Equivalent & Substitute Parts

Part Overview

The ADP3118JRZ is a half-bridge gate driver IC manufactured by onsemi, designed for driving N-channel MOSFETs in synchronous half-bridge configurations. This device operates with a supply voltage range of 4.15V to 13.2V and features non-inverting logic inputs with a maximum bootstrap voltage of 25V. The ADP3118JRZ is classified as obsolete, making identification of active equivalent parts essential for new designs and production continuity. The NCP3420DR2G serves as the direct functional successor, offering improved performance characteristics while maintaining package and pinout compatibility.

Substiute Parts

ADP3118JRZ

onsemiIn Stock: 1995ADP3118JRZ Datasheet

Current PartRFQ

NCP3420DR2G

onsemiIn Stock: 282724NCP3420DR2G Datasheet

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Key Parameters

Substitute Part Grouping Explanation

The NCP3420DR2G qualifies as a direct substitute for the ADP3118JRZ based on the following critical parameters:

Matching Parameters:

• Identical half-bridge driven configuration with 2 N-channel MOSFET drivers
• Identical 8-SOIC package footprint (0.154", 3.90mm Width)
• Non-inverting logic input architecture
• Identical logic voltage thresholds (VIL 0.8V, VIH 2V)
• Identical operating temperature range (0°C ~ 150°C TJ)
• Identical MSL rating (1 - Unlimited)

Enhanced Parameters:

• Supply voltage range: 4.6V ~ 13.2V (vs. 4.15V ~ 13.2V) — slightly higher minimum threshold
• Bootstrap voltage: 35V maximum (vs. 25V) — improved high-side voltage capability
• Rise/Fall time: 16ns/11ns (vs. 25ns/20ns) — faster switching performance

The NCP3420DR2G is an active product with superior electrical performance and maintains full pin and package compatibility with the obsolete ADP3118JRZ.

Parameter Comparison

Engineering Selection Recommendations

The NCP3420DR2G is the recommended substitute for the obsolete ADP3118JRZ in all new designs and production applications. Selection rationale is based on the following factors:

Product Status: The ADP3118JRZ is obsolete and no longer manufactured. The NCP3420DR2G is an active product with confirmed ongoing production and availability.

Compliance & Certifications: The NCP3420DR2G carries ROHS3 compliance certification, meeting current regulatory requirements. Both devices maintain REACH Unaffected status and EAR99 ECCN classification.

Electrical Compatibility: The NCP3420DR2G maintains identical logic thresholds, operating temperature range, and package footprint. The enhanced bootstrap voltage rating (35V vs. 25V) and faster switching times (16ns/11ns vs. 25ns/20ns) provide improved performance margins without requiring circuit redesign.

Supply Voltage Consideration: The NCP3420DR2G minimum supply voltage is 4.6V compared to the ADP3118JRZ at 4.15V. Applications operating below 4.6V require design verification or retention of the original part if available.

Inventory & Availability: The NCP3420DR2G has substantial inventory availability (282,700 pcs), ensuring supply continuity for production and development.

Frequently Asked Questions (FAQ)

Q: Can the NCP3420DR2G be used as a direct drop-in replacement for the ADP3118JRZ?

A: Yes, the NCP3420DR2G is a direct pin-compatible and functionally equivalent substitute. The 8-SOIC package footprint is identical, and all logic signal levels and operating parameters are compatible. No circuit modifications are required for standard applications.

Q: What is the difference in bootstrap voltage rating between these parts?

A: The ADP3118JRZ has a maximum bootstrap voltage of 25V, while the NCP3420DR2G is rated to 35V. This means the NCP3420DR2G can operate in higher voltage half-bridge topologies. If your application operates at or below 25V bootstrap voltage, both parts are functionally equivalent in this parameter.

Q: Why is the ADP3118JRZ obsolete?

A: The ADP3118JRZ has been discontinued by onsemi. The NCP3420DR2G represents the current active product line for half-bridge gate driver applications in this performance class.

Q: Are there any supply voltage limitations when substituting?

A: The NCP3420DR2G has a minimum supply voltage of 4.6V, compared to 4.15V for the ADP3118JRZ. If your circuit operates below 4.6V, verify that the NCP3420DR2G meets your minimum supply voltage requirement before implementation.

Q: What are the switching speed improvements of the NCP3420DR2G?

A: The NCP3420DR2G offers faster rise and fall times (16ns and 11ns respectively) compared to the ADP3118JRZ (25ns and 20ns). This results in reduced switching losses and improved efficiency in high-frequency applications, with no negative impact on compatibility.

Q: Is the NCP3420DR2G RoHS compliant?

A: Yes, the NCP3420DR2G is ROHS3 compliant. The ADP3118JRZ RoHS status is not specified in the available data.

Q: What packaging options are available for the NCP3420DR2G?

A: The NCP3420DR2G is available in Cut Tape (CT) and Digi-Reel packaging formats, both in the 8-SOIC package configuration.