NCP59151MN33TYG Equivalent & Substitute Parts

Part Overview

The NCP59151MN33TYG is a linear voltage regulator IC from onsemi designed for positive fixed 3.3V output applications with 1.5A current capacity in an 8-DFN (4x4) surface mount package. This part is classified as obsolete, making identification of suitable substitute components essential for ongoing design support and production continuity. The regulator integrates enable and error flag control features alongside over-current, over-temperature, and reverse polarity protection.

Substiute Parts

NCP59151MN33TYG

onsemiIn Stock: 100347NCP59151MN33TYG Datasheet

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NCP59748MN1ADJTBG

onsemiIn Stock: 134292NCP59748MN1ADJTBG Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the NCP59151MN33TYG requires evaluation based on the following critical parameters:

Output Voltage Compatibility: The main part delivers a fixed 3.3V output. Substitute parts must provide equivalent voltage output or adjustable output capable of delivering 3.3V within specified tolerances.

Current Rating: The 1.5A output current specification must be maintained or exceeded in substitute components.

Package Form Factor: The 8-DFN (4x4) surface mount package defines the physical footprint. Substitute parts with different package geometries require PCB redesign.

Input Voltage Range: Maximum input voltage of 14.6V establishes the operating envelope. Substitutes must accommodate this range.

Control and Protection Features: Enable, error flag, over-current, over-temperature, and reverse polarity protection define the functional feature set.

Regulatory Compliance: RoHS3 compliance and REACH unaffected status are mandatory for equivalent substitution.

The NCP59748MN1ADJTBG is identified as a substitute based on shared manufacturer origin, equivalent current rating, compatible operating temperature range, and matching regulatory compliance. However, critical differences exist in output type (adjustable vs. fixed), package geometry (10-DFN vs. 8-DFN), and input voltage maximum (5.5V vs. 14.6V).

Parameter Comparison

Engineering Selection Recommendations

The NCP59748MN1ADJTBG offers active product status with ongoing manufacturer support, addressing the obsolescence constraint of the NCP59151MN33TYG. Both components maintain ROHS3 compliance and REACH unaffected status, satisfying regulatory requirements.

Direct substitution requires consideration of three limiting factors:

Input Voltage Constraint: The NCP59748MN1ADJTBG maximum input voltage of 5.5V is significantly lower than the NCP59151MN33TYG specification of 14.6V. Applications requiring input voltages above 5.5V cannot use this substitute without circuit redesign.

Package Geometry Difference: The transition from 8-DFN (4x4) to 10-DFN (3x3) requires PCB layout modification. The 10-pin configuration introduces additional pins not present in the 8-pin original.

Output Type Transition: The adjustable output configuration of the NCP59748MN1ADJTBG requires external resistor network design to establish 3.3V output, whereas the NCP59151MN33TYG provides fixed 3.3V output without external components.

Selection of the NCP59748MN1ADJTBG as a substitute is appropriate only when input voltage remains below 5.5V and PCB redesign is feasible.

Frequently Asked Questions (FAQ)

Q: Can the NCP59748MN1ADJTBG directly replace the NCP59151MN33TYG on existing PCBs?

A: No. The NCP59748MN1ADJTBG uses a 10-DFN (3x3) package versus the 8-DFN (4x4) original package. Pin count and physical footprint differ, requiring PCB redesign. Additionally, the adjustable output requires external resistor configuration to achieve 3.3V output.

Q: What is the primary limitation of using NCP59748MN1ADJTBG in high input voltage applications?

A: The NCP59748MN1ADJTBG maximum input voltage rating is 5.5V, compared to 14.6V for the NCP59151MN33TYG. Applications with input voltages exceeding 5.5V cannot use this substitute.

Q: Are both parts RoHS compliant?

A: Yes. Both the NCP59151MN33TYG and NCP59748MN1ADJTBG are ROHS3 compliant and REACH unaffected, meeting current regulatory requirements.

Q: What is the significance of the product status difference?

A: The NCP59151MN33TYG is classified as obsolete, indicating discontinued manufacturing and limited availability. The NCP59748MN1ADJTBG maintains active status with ongoing production and manufacturer support.

Q: How does the voltage dropout specification affect substitution?

A: The NCP59748MN1ADJTBG exhibits superior dropout performance (0.165V @ 1.5A) compared to the NCP59151MN33TYG (0.5V @ 1.5A). This improvement reduces power dissipation and heat generation in the substitute component.

Q: What external components are required for the NCP59748MN1ADJTBG to output 3.3V?

A: The adjustable output configuration requires external resistor divider network design. Specific resistor values depend on the reference voltage and feedback network topology defined in the NCP59748 datasheet.