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Equivalent & Substitute Parts for LP38841S-1.5
Part Overview
The LP38841S-1.5 from Texas Instruments is a Power Management IC (PMIC) specifically designed as a linear, positive, fixed voltage regulator, delivering 1.5V output at up to 800mA in a TO-263 (DDPAK-5) surface-mount package. The part status is Obsolete, which makes identifying compatible and direct alternative models necessary for continued support, ongoing production, or replacement in maintenance scenarios. Substitute parts are required to ensure circuit compatibility, maintain compliance, and facilitate procurement.
Substiute Parts
Key Parameters
| Parameter | LP38841S-1.5 Value |
|---|---|
| Manufacturer | Texas Instruments |
| Category | Power Management (PMIC) |
| Description | IC REG LINEAR 1.5V 800MA DDPAK |
| Output Configuration | Positive |
| Output Type | Fixed |
| Number of Regulators | 1 |
| Voltage - Input (Max) | 5.5V |
| Voltage - Output (Min/Fixed) | 1.5V |
| Voltage Dropout (Max) | 0.21V @ 800mA |
| Current - Output | 800mA |
| Current - Quiescent (Iq) | 30 µA |
| Current - Supply (Max) | 40 mA |
| PSRR | 80dB ~ 65dB (120Hz ~ 1kHz) |
| Control Features | Enable |
| Protection Features | Over Current, Over Temperature, Short Circuit |
| Operating Temperature | -40°C ~ 125°C |
| Mounting Type | Surface Mount |
| Package / Case | TO-263-6, D2PAK (5 Leads + Tab), TO-263BA |
| Supplier Device Package | TO-263 (DDPAK-5) |
| Base Product Number | LP38841 |
| RoHS Status | RoHS non-compliant |
| Moisture Sensitivity Level (MSL) | 3 (168 Hours) |
| REACH Status | REACH Unaffected |
| ECCN | EAR99 |
Substitute Part Grouping Explanation
Substitution is based strictly on electrical and mechanical parameter alignment within the Power Management IC category. The substitute part, LP38841S-1.5/NOPB, is grouped as an equivalent due to matching these key parameters: manufacturer, output configuration, number of regulators, output voltage, maximum input voltage, dropout voltage at load, output current, regulator architecture, control and protection features, operating temperature range, surface-mount TO-263 (DDPAK-5) package, and moisture sensitivity. RoHS and REACH compliance status are also considered for process compatibility.
Parameter Comparison
| Parameter | LP38841S-1.5 | LP38841S-1.5/NOPB |
|---|---|---|
| Manufacturer | Texas Instruments | Texas Instruments |
| Category | Power Management (PMIC) | Power Management (PMIC) |
| Description | IC REG LINEAR 1.5V 800MA DDPAK | IC REG LINEAR 1.5V 800MA DDPAK |
| Output Configuration | Positive | Positive |
| Output Type | Fixed | Fixed |
| Number of Regulators | 1 | 1 |
| Voltage - Input (Max) | 5.5V | 5.5V |
| Voltage - Output (Min/Fixed) | 1.5V | 1.5V |
| Voltage Dropout (Max) | 0.21V @ 800mA | 0.21V @ 800mA |
| Current - Output | 800mA | 800mA |
| Current - Quiescent (Iq) | 30 µA | 30 µA |
| Current - Supply (Max) | 40 mA | 40 mA |
| PSRR | 80dB ~ 65dB (120Hz ~ 1kHz) | 80dB ~ 65dB (120Hz ~ 1kHz) |
| Control Features | Enable | Enable |
| Protection Features | Over Current, Over Temperature, Short Circuit | Over Current, Over Temperature, Short Circuit |
| Operating Temperature | -40°C ~ 125°C | -40°C ~ 125°C |
| Mounting Type | Surface Mount | Surface Mount |
| Package / Case | TO-263-6, D2PAK (5 Leads + Tab), TO-263BA | TO-263-6, D2PAK (5 Leads + Tab), TO-263BA |
| Supplier Device Package | TO-263 (DDPAK-5) | TO-263 (DDPAK-5) |
| Base Product Number | LP38841 | LP38841 |
| RoHS Status | RoHS non-compliant | ROHS3 Compliant |
| Moisture Sensitivity Level (MSL) | 3 (168 Hours) | 3 (168 Hours) |
| REACH Status | REACH Unaffected | REACH Affected |
| ECCN | EAR99 | EAR99 |
Engineering Selection Recommendations
The LP38841S-1.5 has an obsolete status and is not RoHS compliant. For new designs or ongoing production, LP38841S-1.5/NOPB is a suitable substitute due to its active status and ROHS3 compliance. Both parts have matching moisture sensitivity levels and package configuration, facilitating direct process compatibility. Regulatory and environmental certifications such as RoHS and REACH vary and must be matched to application requirements.
Frequently Asked Questions (FAQ)
Q1: What criteria must be matched for a valid LP38841S-1.5 substitute?
A1: All key electrical parameters (output voltage, current, dropout voltage), configuration (number of regulators, output type), and mechanical attributes (TO-263/DDPAK-5 package, mounting type) must match.
Q2: Does LP38841S-1.5/NOPB have the same footprint and pinout as LP38841S-1.5?
A2: Both LP38841S-1.5 and LP38841S-1.5/NOPB share the TO-263 (DDPAK-5) footprint and pinout compatibility.
Q3: Are there certification differences between the main and substitute part?
A3: LP38841S-1.5/NOPB is ROHS3 compliant, while LP38841S-1.5 is RoHS non-compliant. REACH status differs.
Q4: Is there a difference in performance or features between LP38841S-1.5 and the substitute?
A4: All listed electrical and mechanical key parameters are identical as per the provided information.
Q5: What should be considered regarding environmental compliance?
A5: Select the part that aligns with end-use environmental and regulatory requirements; for RoHS-compliant applications, LP38841S-1.5/NOPB is suitable.
Q6: Does the substitute part have the same operating temperature range?
A6: Yes, both are rated for -40°C to 125°C.
Q7: What packaging and inventory differences exist?
A7: Both parts are supplied in tube packaging, with inventory levels specified by the provided data.
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