Request Quote
(Ships tomorrow)
LP38693SD-ADJ Linear Voltage Regulator Equivalent & Substitute Parts
Part Overview
The LP38693SD-ADJ is a linear voltage regulator IC from Texas Instruments designed for positive adjustable output applications. This device delivers 500mA output current in a compact 6-WSON (3x3) surface mount package and is qualified to AEC-Q100 automotive standards. The main part number LP38693SD-ADJ carries an obsolete product status, making equivalent active alternatives necessary for new designs and ongoing production requirements.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Category | Power Management (PMIC) |
| Output Configuration | Positive |
| Output Type | Adjustable |
| Number of Regulators | 1 |
| Voltage - Input (Max) | 10V |
| Voltage - Output (Min/Fixed) | 1.25V |
| Voltage - Output (Max) | 9V |
| Current - Output | 500mA |
| Current - Quiescent (Iq) | 55 µA |
| Current - Supply (Max) | 100 µA |
| PSRR | 55dB (120Hz) |
| Control Features | Enable |
| Protection Features | Over Temperature |
| Operating Temperature | -40°C ~ 125°C |
| Grade | Automotive |
| Qualification | AEC-Q100 |
| Mounting Type | Surface Mount |
| Package / Case | 6-WDFN Exposed Pad |
| Supplier Device Package | 6-WSON (3x3) |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
Substitute Part Grouping Explanation
All substitute parts listed maintain identical electrical and mechanical specifications as the main part LP38693SD-ADJ. Substitution eligibility is determined by the following critical parameters:
- Output configuration (Positive)
- Output type (Adjustable)
- Voltage range (Input Max: 10V, Output Min: 1.25V, Output Max: 9V)
- Current rating (500mA output)
- Quiescent current (55 µA)
- PSRR performance (55dB at 120Hz)
- Control and protection features (Enable, Over Temperature)
- Operating temperature range (-40°C ~ 125°C)
- Package type (6-WSON 3x3)
- Automotive grade and AEC-Q100 qualification
The substitute parts differ only in product status (Active vs. Obsolete), RoHS compliance level, and packaging format (Cut Tape vs. Tape & Reel), which do not affect electrical or mechanical compatibility.
Parameter Comparison
| Part Number | Manufacturer | Product Status | Output (mA) | Iq (µA) | Voltage In (Max) | Voltage Out Min/Max | Package | RoHS Status | Inventory (Pcs) |
|---|---|---|---|---|---|---|---|---|---|
| LP38693SD-ADJ | Texas Instruments | Obsolete | 500 | 55 | 10V | 1.25V / 9V | 6-WSON (3x3) | Non-compliant | 1,636 |
| LP38693QSD-ADJ/NOPB | Texas Instruments | Active | 500 | 55 | 10V | 1.25V / 9V | 6-WSON (3x3) | ROHS3 Compliant | 54,280 |
| LP38693QSDX-ADJ/NOPB | Texas Instruments | Active | 500 | 55 | 10V | 1.25V / 9V | 6-WSON (3x3) | ROHS3 Compliant | 2,700 |
| LP38693SD-ADJ/NOPB | Texas Instruments | Active | 500 | 55 | 10V | 1.25V / 9V | 6-WSON (3x3) | ROHS3 Compliant | 51,900 |
| LP38693SDX-ADJ/NOPB | Texas Instruments | Active | 500 | 55 | 10V | 1.25V / 9V | 6-WSON (3x3) | ROHS3 Compliant | 55,395 |
Engineering Selection Recommendations
For new designs and production applications, LP38693QSD-ADJ/NOPB, LP38693QSDX-ADJ/NOPB, LP38693SD-ADJ/NOPB, and LP38693SDX-ADJ/NOPB are direct functional replacements for the obsolete LP38693SD-ADJ. All substitute parts maintain active product status with Texas Instruments and carry ROHS3 compliance certification, meeting current regulatory requirements.
Selection between substitute options depends on packaging requirements and inventory availability. LP38693SD-ADJ/NOPB and LP38693SDX-ADJ/NOPB are supplied in Cut Tape (CT) & Digi-Reel® format, while LP38693QSDX-ADJ/NOPB is supplied in Tape & Reel (TR) format. LP38693QSD-ADJ/NOPB is available in Cut Tape (CT) & Digi-Reel® format. All parts are qualified to AEC-Q100 automotive standards and maintain identical electrical performance specifications.
Frequently Asked Questions (FAQ)
Q: Can LP38693QSD-ADJ/NOPB be used as a direct replacement for LP38693SD-ADJ?
A: Yes. Both parts deliver identical electrical performance: 500mA output current, 1.25V to 9V adjustable output range, 55 µA quiescent current, and 55dB PSRR at 120Hz. The primary difference is product status (Active vs. Obsolete) and RoHS compliance level. All mechanical and electrical parameters are equivalent.
Q: What is the difference between the "SD" and "SDX" variants?
A: The SD and SDX designations indicate different manufacturing process nodes within the LP38693 family. Both variants maintain identical electrical specifications and are functionally interchangeable. The difference is internal to Texas Instruments' manufacturing process and does not affect circuit performance or compatibility.
Q: Does packaging format affect electrical performance?
A: No. Cut Tape (CT) & Digi-Reel® and Tape & Reel (TR) packaging formats are mechanical packaging options only. The 6-WSON (3x3) package type, pin configuration, and electrical characteristics remain identical across all substitute parts.
Q: Are all substitute parts AEC-Q100 qualified?
A: Yes. All substitute parts listed carry AEC-Q100 automotive qualification and operate across the -40°C to 125°C temperature range, meeting automotive-grade requirements.
Q: Which substitute part has the highest inventory availability?
A: LP38693SDX-ADJ/NOPB has the highest inventory with 55,395 pieces in stock, followed by LP38693SD-ADJ/NOPB with 51,900 pieces.
Alternative Parts
SJ6012L2TP
Littelfuse Inc.
6 Alternative Parts
JMK107BBJ476MA-RE
Taiyo Yuden
10 Alternative Parts
GMK107BBJ475MA-T
Taiyo Yuden
5 Alternative Parts
SJ6020N2ARP
Littelfuse Inc.
3 Alternative Parts
SJ6025R2ATP
Littelfuse Inc.
4 Alternative Parts
2474-05L
API Delevan Inc.
1 Alternative Parts
4590R-684K
API Delevan Inc.
1 Alternative Parts
CM6560R-334
API Delevan Inc.
1 Alternative Parts
CM6460-104
API Delevan Inc.
1 Alternative Parts
5526-12
API Delevan Inc.
1 Alternative Parts