LP5912Q1.8DRVTQ1 Equivalent & Substitute Parts

Part Overview

The LP5912Q1.8DRVTQ1 is a linear voltage regulator IC from Texas Instruments designed for power management applications. It delivers a fixed 1.8V output at 500mA with integrated control features including Enable, Power Good, and Soft Start functionality. The device is qualified to AEC-Q100 automotive standards and packaged in a 6-WSON (2x2) surface mount configuration with exposed pad.

The LP5912Q1.8DRVTQ1 carries a Last Time Buy product status, indicating that Texas Instruments has discontinued this specific part number variant. Identifying equivalent substitute parts ensures design continuity and supply chain reliability for applications currently using this regulator.

Key Parameters

Parameter	Value
Output Voltage (Fixed)	1.8V
Output Current	500mA
Input Voltage (Max)	6.5V
Dropout Voltage (Max)	0.25V @ 500mA
Quiescent Current	55 µA
PSRR	80dB ~ 40dB (100Hz ~ 100kHz)
Control Features	Enable, Power Good, Soft Start
Protection Features	Over Temperature, Reverse Polarity, Short Circuit
Operating Temperature Range	-40°C ~ 125°C (TJ)
Package / Case	6-WDFN Exposed Pad
Supplier Device Package	6-WSON (2x2)
Grade	Automotive
Qualification	AEC-Q100
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the LP5912Q1.8DRVTQ1 is determined by matching the following critical parameters across all candidate parts:

Output voltage: 1.8V fixed
Output current capability: 500mA
Maximum input voltage: 6.5V
Dropout voltage: 0.25V @ 500mA
Control features: Enable, Power Good, Soft Start
Protection features: Over Temperature, Reverse Polarity, Short Circuit
Operating temperature range: -40°C ~ 125°C
Package type: 6-WSON (2x2) with exposed pad
Compliance: ROHS3, REACH Unaffected

All three substitute part numbers—LP5912-1.8DRVR, LP5912-1.8DRVT, and LP5912Q1.8DRVRQ1—share identical electrical specifications and packaging with the main part number. Differences exist only in product status and packaging format designations (Cut Tape vs. Digi-Reel).

Parameter Comparison

Parameter	LP5912Q1.8DRVTQ1	LP5912-1.8DRVR	LP5912-1.8DRVT	LP5912Q1.8DRVRQ1
Manufacturer	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments
Output Voltage	1.8V	1.8V	1.8V	1.8V
Output Current	500mA	500mA	500mA	500mA
Input Voltage (Max)	6.5V	6.5V	6.5V	6.5V
Dropout Voltage (Max)	0.25V @ 500mA	0.25V @ 500mA	0.25V @ 500mA	0.25V @ 500mA
Quiescent Current	55 µA	55 µA	55 µA	55 µA
PSRR	80dB ~ 40dB (100Hz ~ 100kHz)	80dB ~ 40dB (100Hz ~ 100kHz)	80dB ~ 40dB (100Hz ~ 100kHz)	80dB ~ 40dB (100Hz ~ 100kHz)
Control Features	Enable, Power Good, Soft Start	Enable, Power Good, Soft Start	Enable, Power Good, Soft Start	Enable, Power Good, Soft Start
Protection Features	Over Temperature, Reverse Polarity, Short Circuit	Over Temperature, Reverse Polarity, Short Circuit	Over Temperature, Reverse Polarity, Short Circuit	Over Temperature, Reverse Polarity, Short Circuit
Operating Temperature	-40°C ~ 125°C	-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	6-WDFN Exposed Pad
Supplier Device Package	6-WSON (2x2)	6-WSON (2x2)	6-WSON (2x2)	6-WSON (2x2)
Grade	Automotive	Not specified	Not specified	Automotive
Qualification	AEC-Q100	Not specified	Not specified	AEC-Q100
Product Status	Last Time Buy	Active	Last Time Buy	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

For applications requiring automotive-grade qualification and AEC-Q100 compliance, LP5912Q1.8DRVRQ1 is the preferred substitute. This part maintains Active product status with Texas Instruments, ensuring long-term availability and supply chain stability. Current inventory of 50,400 units supports production requirements.

For non-automotive applications or where automotive qualification is not mandatory, LP5912-1.8DRVR is the optimal choice. This part carries Active product status and maintains the highest current inventory at 52,445 units, providing superior supply availability.

LP5912-1.8DRVT remains functionally equivalent but carries Last Time Buy status, indicating limited future availability. This part should be selected only when inventory of preferred alternatives is exhausted or when existing supply agreements mandate its use.

All three substitute parts are electrically and mechanically interchangeable with the LP5912Q1.8DRVTQ1 based on the provided specifications.

Frequently Asked Questions (FAQ)

Q: Can LP5912-1.8DRVR be used as a direct replacement for LP5912Q1.8DRVTQ1 in automotive applications?

A: LP5912-1.8DRVR is electrically equivalent but does not carry automotive grade or AEC-Q100 qualification designations. For automotive applications requiring these certifications, use LP5912Q1.8DRVRQ1 instead.

Q: Are all substitute parts available in the same packaging format?

A: All substitute parts use the 6-WSON (2x2) package with exposed pad. Packaging format designations (Cut Tape vs. Digi-Reel) are supply chain variants and do not affect electrical or mechanical compatibility.

Q: What is the significance of the Last Time Buy status on LP5912Q1.8DRVTQ1 and LP5912-1.8DRVT?

A: Last Time Buy status indicates that Texas Instruments has discontinued or will discontinue production of these specific part numbers. Designs should transition to Active status parts (LP5912-1.8DRVR or LP5912Q1.8DRVRQ1) to ensure long-term supply availability.

Q: Are there any differences in control or protection features between the main part and substitutes?

A: No. All parts include identical Enable, Power Good, and Soft Start control features, plus Over Temperature, Reverse Polarity, and Short Circuit protection.

Q: Can these parts be used interchangeably on the same PCB without layout modifications?

A: Yes. All parts share the same 6-WSON (2x2) package footprint with exposed pad, allowing direct PCB substitution without layout changes.

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