LP38692SD-1.8 Equivalent & Substitute Parts

Part Overview

The LP38692SD-1.8 is a linear voltage regulator IC from Texas Instruments, classified as a Power Management (PMIC) component. It delivers a fixed 1.8V output at 1A maximum current in a 6-WSON (3x3) surface mount package. The main part (LP38692SD-1.8) carries an Obsolete product status, making identification of active equivalent and substitute parts essential for ongoing design support and procurement continuity.

Key Parameters

Parameter	Value
Manufacturer	Texas Instruments
Category	Power Management (PMIC)
Output Voltage (Fixed)	1.8V
Output Current	1A
Input Voltage (Max)	10V
Dropout Voltage (Max)	1.6V @ 1A
Quiescent Current	55 µA
PSRR	55dB (120Hz)
Operating Temperature Range	-40°C ~ 125°C
Package / Case	6-WDFN Exposed Pad
Mounting Type	Surface Mount
Protection Features	Over Temperature

Substitute Part Grouping Explanation

Substitute parts for the LP38692SD-1.8 are identified based on strict electrical and mechanical parameter matching:

Electrical Parameters (Must Match):

Fixed output voltage: 1.8V
Output current capability: 1A
Maximum input voltage: 10V
Dropout voltage: 1.6V @ 1A
Quiescent current: 55 µA
PSRR: 55dB (120Hz)
Operating temperature range: -40°C ~ 125°C
Protection features: Over Temperature

Mechanical Parameters (Must Match):

Package type: 6-WDFN Exposed Pad
Mounting type: Surface Mount
Supplier device package: 6-WSON (3x3)

Substitution Categories:

Direct Manufacturer Equivalent (Packaging Variant): LP38692SD-1.8/NOPB — Identical electrical specifications and package, differentiated only by packaging format (Tape & Reel vs. Cut Tape) and product status (Active vs. Obsolete).
Parametric Equivalent (Base Product Variant): LP38690SD-1.8/NOPB — Identical electrical specifications and package, derived from a different base product number (LP38690 vs. LP38692) while maintaining full electrical and mechanical compatibility.

Parameter Comparison

Parameter	LP38692SD-1.8 (Main)	LP38692SD-1.8/NOPB (Direct Equivalent)	LP38690SD-1.8/NOPB (Parametric Equivalent)
Manufacturer	Texas Instruments	Texas Instruments	Texas Instruments
Product Status	Obsolete	Active	Active
Output Voltage	1.8V	1.8V	1.8V
Output Current	1A	1A	1A
Input Voltage (Max)	10V	10V	10V
Dropout Voltage (Max)	1.6V @ 1A	1.6V @ 1A	1.6V @ 1A
Quiescent Current	55 µA	55 µA	55 µA
PSRR	55dB (120Hz)	55dB (120Hz)	55dB (120Hz)
Operating Temperature	-40°C ~ 125°C	-40°C ~ 125°C	-40°C ~ 125°C
Package / Case	6-WDFN Exposed Pad	6-WDFN Exposed Pad	6-WDFN Exposed Pad
Mounting Type	Surface Mount	Surface Mount	Surface Mount
Packaging Format	Cut Tape (CT) & Digi-Reel®	Tape & Reel (TR)	Cut Tape (CT) & Digi-Reel®
RoHS Status	RoHS non-compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

For New Designs and Procurement:

Use LP38692SD-1.8/NOPB or LP38690SD-1.8/NOPB. Both parts are Active status and ROHS3 compliant, providing regulatory compliance and long-term availability assurance. The LP38692SD-1.8/NOPB maintains the same base product number as the original part, while LP38690SD-1.8/NOPB offers an alternative base product variant with identical electrical performance.

For Legacy System Maintenance:

The LP38692SD-1.8 (Obsolete) can be directly replaced with either substitute part without circuit modification, as all electrical and mechanical parameters are identical. Packaging format selection (Tape & Reel vs. Cut Tape) depends on procurement volume and assembly requirements.

Compliance Considerations:

The original LP38692SD-1.8 is RoHS non-compliant. Both substitute parts (LP38692SD-1.8/NOPB and LP38690SD-1.8/NOPB) are ROHS3 compliant, meeting current environmental and regulatory standards for electronics manufacturing and distribution.

Frequently Asked Questions (FAQ)

Q: Can LP38692SD-1.8/NOPB be used as a direct replacement for LP38692SD-1.8?

A: Yes. Both parts are electrically and mechanically identical. The difference is packaging format (Tape & Reel vs. Cut Tape) and product status (Active vs. Obsolete). No circuit modifications are required.

Q: What is the difference between LP38692SD-1.8/NOPB and LP38690SD-1.8/NOPB?

A: Both parts deliver identical electrical performance and use the same 6-WSON (3x3) package. The difference is the base product number (LP38692 vs. LP38690). Both are Active status and ROHS3 compliant. Selection depends on availability and procurement preference.

Q: Are the substitute parts pin-compatible with the original LP38692SD-1.8?

A: Yes. All three parts use the 6-WDFN Exposed Pad package with identical pinout and electrical characteristics. PCB layout and schematic connections require no modification.

Q: What is the significance of the /NOPB suffix?

A: The /NOPB suffix indicates the part is supplied without plumbum (lead-free), meeting RoHS3 compliance requirements. This is standard for current production parts from Texas Instruments.

Q: Can I mix packaging formats (Cut Tape vs. Tape & Reel) in the same design?

A: Yes. Packaging format affects procurement and assembly logistics only. Electrically and mechanically, Cut Tape and Tape & Reel variants of the same part number are identical and fully interchangeable.

Q: Is the LP38692SD-1.8 still available for purchase?

A: The LP38692SD-1.8 is Obsolete status. Current inventory exists (3900 Pcs), but long-term availability is not guaranteed. Use LP38692SD-1.8/NOPB or LP38690SD-1.8/NOPB for new designs and ongoing procurement.

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