LP38690SD-5.0 Equivalent & Substitute Parts Reference

Part Overview

The LP38690SD-5.0 from Texas Instruments is a Power Management IC (category: PMIC) operating as a linear voltage regulator with a fixed 5V positive output, 1A output current, and a 6-WSON (3x3mm) package. This device is currently classified as obsolete, and alternative models must be used for ongoing and new designs requiring a functionally equivalent replacement with the same key parameters and package. Finding direct alternatives ensures compatibility in electrical performance and mechanical fit.

Key Parameters

Parameter	Value
Output Configuration	Positive
Output Type	Fixed
Number of Regulators	1
Voltage - Input (Max)	10V
Voltage - Output (Fixed)	5V
Voltage Dropout (Max)	0.8V @ 1A
Current - Output	1A
Current - Quiescent (Iq)	55 µA
Current - Supply (Max)	100 µA
PSRR	55dB (120Hz)
Protection Features	Over Temperature
Operating Temperature	-40°C ~ 125°C
Mounting Type	Surface Mount
Package / Case	6-WDFN Exposed Pad
Supplier Device Package	6-WSON (3x3)
RoHS Status	RoHS non-compliant
MSL	1 (Unlimited)
REACH Status	REACH Unaffected

Substitute Part Grouping Explanation

Substitutes for the LP38690SD-5.0 are determined strictly by matching these parameters: fixed 5V positive output voltage, 1A output current, dropout voltage (max 0.8V at 1A), quiescent/supply current, protection features, PSRR, operating temperature range, surface mount type, package/case (6-WDFN Exposed Pad, 6-WSON 3x3), and compliance statuses (RoHS, REACH, MSL). Only parts explicitly matching these parameters are included as substitutes.

Parameter Comparison

Parameter	LP38690SD-5.0	LP38690SD-5.0/NOPB	LP38690SDX-5.0/NOPB	LP38692SD-5.0/NOPB	LP38692SDX-5.0/NOPB
Manufacturer	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments
Output Configuration	Positive	Positive	Positive	Positive	Positive
Output Type	Fixed	Fixed	Fixed	Fixed	Fixed
Number of Regulators	1	1	1	1	1
Voltage - Input (Max)	10V	10V	10V	10V	10V
Voltage - Output (Fixed)	5V	5V	5V	5V	5V
Voltage Dropout (Max)	0.8V @ 1A	0.8V @ 1A	0.8V @ 1A	0.8V @ 1A	0.8V @ 1A
Current - Output	1A	1A	1A	1A	1A
Current - Quiescent (Iq)	55 µA	55 µA	55 µA	55 µA	55 µA
Current - Supply (Max)	100 µA	100 µA	100 µA	100 µA	100 µA
PSRR	55dB (120Hz)	55dB (120Hz)	55dB (120Hz)	55dB (120Hz)	55dB (120Hz)
Protection Features	Over Temperature	Over Temperature	Over Temperature	Over Temperature	Over Temperature
Operating Temperature	-40°C ~ 125°C	-40°C ~ 125°C	-40°C ~ 125°C	-40°C ~ 125°C	-40°C ~ 125°C
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Package / Case	6-WDFN Exposed Pad	6-WDFN Exposed Pad	6-WDFN Exposed Pad	6-WDFN Exposed Pad	6-WDFN Exposed Pad
Supplier Device Package	6-WSON (3x3)	6-WSON (3x3)	6-WSON (3x3)	6-WSON (3x3)	6-WSON (3x3)
RoHS Status	RoHS non-compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
MSL	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
REACH Status	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected

Engineering Selection Recommendations

Engineers should replace LP38690SD-5.0 in all new and ongoing designs due to obsolete status and RoHS non-compliance. All listed substitute part numbers, including LP38690SD-5.0/NOPB, LP38690SDX-5.0/NOPB, LP38692SD-5.0/NOPB, and LP38692SDX-5.0/NOPB, offer direct parametric equivalence with RoHS and REACH compliance while matching electrical and mechanical characteristics. Moisture Sensitivity Level and packaging are consistent across all alternatives.

Frequently Asked Questions (FAQ)

Q1: What key parameters must match for a linear voltage regulator to be considered a true substitute for LP38690SD-5.0?
A1: The following must be identical: output voltage (5V, fixed), output current (1A), dropout voltage (max 0.8V @ 1A), supply/quiescent current, operating temperature range, output configuration and type (positive, fixed), protection features (over temperature), PSRR, mounting type, and package/case (6-WDFN Exposed Pad / 6-WSON 3x3).

Q2: Are the substitute parts compatible in mechanical footprint and assembly?
A2: All listed alternatives use the 6-WDFN Exposed Pad package and 6-WSON (3x3) supplier device package, matching the original’s mechanical dimensions and mounting requirements.

Q3: How do the compliance standards of substitute parts compare?
A3: LP38690SD-5.0 is RoHS non-compliant, while all substitutes are ROHS3 and REACH compliant, with identical MSL of 1 (unlimited).

Q4: Does selecting a substitute part require circuit or PCB redesign?
A4: Substitute parts listed share identical key parameters and package/case details, aligning with the LP38690SD-5.0’s original PCB footprint.

Q5: Can any substitute be used interchangeably in automated assembly processes?
A5: Yes, since all substitutes use the same 6-WSON (3x3) footprint and moisture sensitivity level.

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