LP5996SD-1833/NOPB Equivalent & Substitute Parts

Part Overview

The LP5996SD-1833/NOPB is a linear voltage regulator IC from Texas Instruments, classified as a Power Management (PMIC) component. This device provides positive fixed dual-output regulation at 1.8V and 3.3V with output currents of 150mA and 300mA respectively. The part is currently in active production status and is available in surface mount packaging (10-WFDFN Exposed Pad). Substitute parts are identified when equivalent electrical and mechanical parameters align with the main part specifications, enabling direct replacement in circuit designs without functional compromise.

Key Parameters

Parameter	Value
Manufacturer	Texas Instruments
Part Number	LP5996SD-1833/NOPB
Category	Power Management (PMIC)
Output Configuration	Positive Fixed Dual Output
Output Voltages	1.8V, 3.3V
Output Current	150mA, 300mA
Input Voltage (Max)	6V
Quiescent Current (Iq)	110 µA
Operating Temperature Range	-40°C to 85°C
Package Type	10-WFDFN Exposed Pad (3x3)
Mounting Type	Surface Mount
Product Status	Active
RoHS Compliance	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitute parts for the LP5996SD-1833/NOPB are identified based on the following critical parameters that determine functional equivalence:

Output voltage configuration: 1.8V and 3.3V fixed outputs
Output current capability: 150mA and 300mA per channel
Maximum input voltage: 6V
Package type: 10-WFDFN Exposed Pad (3x3)
Surface mount configuration
Active product status
RoHS3 compliance
Operating temperature range: -40°C to 85°C
Control features: Enable function
Protection features: Over Temperature and Short Circuit protection

The LP3996QSD-1833/NOPB and LP3996SD-1833/NOPB meet all these criteria and are classified as parametric equivalents. Both parts share identical output specifications, input voltage ratings, package dimensions, and protection features. Differences in quiescent current (100 µA vs. 110 µA) and dropout voltage specifications remain within acceptable substitution parameters for this device category.

Parameter Comparison

Parameter	LP5996SD-1833/NOPB	LP3996QSD-1833/NOPB	LP3996SD-1833/NOPB
Manufacturer	Texas Instruments	Texas Instruments	Texas Instruments
Output Voltages	1.8V, 3.3V	1.8V, 3.3V	1.8V, 3.3V
Output Current	150mA, 300mA	150mA, 300mA	150mA, 300mA
Input Voltage (Max)	6V	6V	6V
Quiescent Current (Iq)	110 µA	100 µA	100 µA
Operating Temperature	-40°C to 85°C	-40°C to 85°C	-40°C to 85°C
Package Type	10-WFDFN Exposed Pad	10-WFDFN Exposed Pad	10-WFDFN Exposed Pad
Mounting Type	Surface Mount	Surface Mount	Surface Mount
Control Features	Enable	Enable	Enable
Protection Features	Over Temperature, Short Circuit	Over Temperature, Short Circuit	Over Temperature, Short Circuit
Product Status	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

Both substitute parts maintain active product status with full RoHS3 compliance, ensuring long-term availability and regulatory alignment with the main part. The LP3996QSD-1833/NOPB carries AEC-Q100 automotive qualification, making it suitable for applications requiring automotive-grade reliability standards. The LP3996SD-1833/NOPB provides equivalent performance without automotive qualification. Selection between these substitutes depends on application requirements: automotive applications should specify the LP3996QSD-1833/NOPB variant, while general industrial and consumer applications may use either substitute. All three parts are manufactured by Texas Instruments and share identical electrical and mechanical interfaces.

Frequently Asked Questions (FAQ)

Q: Can LP3996QSD-1833/NOPB and LP3996SD-1833/NOPB be used interchangeably with LP5996SD-1833/NOPB?

A: Both substitute parts provide identical output voltage and current specifications, matching input voltage ratings and package dimensions. They are direct functional equivalents for non-automotive applications. For automotive designs, the LP3996QSD-1833/NOPB is the appropriate choice due to AEC-Q100 qualification.

Q: What is the difference between LP3996QSD-1833/NOPB and LP3996SD-1833/NOPB?

A: The primary difference is automotive qualification. The LP3996QSD-1833/NOPB carries AEC-Q100 certification for automotive applications, while the LP3996SD-1833/NOPB does not. Electrical and mechanical specifications are identical.

Q: Are the package dimensions identical across all three parts?

A: Yes. All three parts use the 10-WFDFN Exposed Pad package with 3x3mm dimensions, enabling direct PCB layout compatibility without redesign.

Q: Do the substitute parts have the same control and protection features?

A: Yes. Both substitute parts include Enable control functionality and Over Temperature and Short Circuit protection features identical to the main part.

Q: What is the inventory status of substitute parts?

A: LP3996QSD-1833/NOPB has 1963 pieces in stock, and LP3996SD-1833/NOPB has 3100 pieces in stock, both available as new original components.

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