HV9930LG-G LED Driver Controller Equivalent & Substitute Parts

Part Overview

The HV9930LG-G is an active LED driver controller IC manufactured by Microchip Technology, designed for PWM dimming applications in backlight systems. This 8-SOIC surface mount device operates as a DC-DC controller supporting both step-down (buck) and step-up (boost) topologies without internal switches. The part is RoHS3 compliant and currently in active production status with 6992 units in stock.

Substitute parts are necessary when the HV9930LG-G becomes unavailable, when design requirements demand alternative package formats, or when system specifications require extended operating temperature ranges or additional topological flexibility.

Key Parameters

Parameter	HV9930LG-G
Manufacturer	Microchip Technology
Category	Power Management (PMIC)
Type	DC DC Controller
Topology	Step-Down (Buck), Step-Up (Boost)
Number of Outputs	1
Voltage Supply Range	8V to 200V
Dimming Method	PWM
Operating Temperature	-40°C to 125°C (TA)
Package Type	8-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount
RoHS Status	RoHS3 Compliant
MSL Rating	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the HV9930LG-G is determined by the following critical parameters:

Primary Substitution Criteria:

DC-DC controller topology supporting step-down (buck) and step-up (boost) configurations
Single output channel
PWM dimming capability
No internal switches
Surface mount technology
RoHS3 compliance

Secondary Compatibility Factors:

Voltage supply range overlap (minimum 8V capability preferred)
Operating temperature range (-40°C minimum required)
Package format compatibility or functional equivalence
Product status (active production)

The substitute parts listed below meet the core functional requirements but may differ in package format, maximum voltage rating, frequency range, and temperature operating limits. These differences are acceptable when system design accommodates the specific electrical and thermal characteristics of each alternative.

Parameter Comparison

Parameter	HV9930LG-G	AT9933LG-G	LM3429MHX/NOPB	LT3756HMSE-2#PBF	LT3791HFE#PBF	LT8391AHUFD#PBF	LT8391IFE#PBF	RT8462ZQW
Manufacturer	Microchip	Microchip	Texas Instruments	Analog Devices	Analog Devices	Analog Devices	Analog Devices	Richtek USA
Type	DC DC Controller	DC DC Controller	DC DC Controller	DC DC Controller	DC DC Controller	DC DC Controller	DC DC Controller	DC DC Controller
Topology	Buck, Boost	Buck, Boost	SEPIC, Buck, Boost	Flyback, SEPIC, Buck, Boost	Buck, Boost	Buck, Boost	Buck, Boost	Buck, Boost
Number of Outputs	1	1	1	1	1	1	1	1
Voltage Supply Min	8V	—	4.5V	6V	4.7V	4V	4V	4.5V
Voltage Supply Max	200V	75V	75V	100V	60V	60V	60V	36V
Dimming	PWM	PWM	Analog, PWM	Analog, PWM	Analog, PWM	Analog, PWM	Analog, PWM	Analog, PWM
Operating Temperature	-40°C to 125°C (TA)	-40°C to 125°C (TA)	-40°C to 125°C (TJ)	-40°C to 150°C (TJ)	-40°C to 150°C (TJ)	-40°C to 150°C (TJ)	-40°C to 125°C (TJ)	-40°C to 125°C (TJ)
Package	8-SOIC	8-SOIC	14-HTSSOP	16-MSOP-EP	38-TSSOP-EP	28-QFN (4x5)	28-TSSOP-EP	16-WQFN (3x3)
RoHS Status	RoHS3 Compliant	RoHS3 Compliant	RoHS3 Compliant	RoHS3 Compliant	RoHS3 Compliant	RoHS3 Compliant	RoHS3 Compliant	RoHS3 Compliant
MSL Rating	1 (Unlimited)	3 (168 Hours)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	3 (168 Hours)
Product Status	Active	Active	Active	Active	Active	Active	Active	Active

Engineering Selection Recommendations

Direct Package Equivalent (Preferred for Minimal Redesign): AT9933LG-G is the parametric equivalent from Microchip Technology in the same 8-SOIC package. This part maintains identical pinout and package footprint, requiring no PCB layout modifications. The AT9933LG-G operates within a reduced maximum supply voltage of 75V compared to the HV9930LG-G's 200V rating. This part carries AEC-Q100 automotive qualification and is suitable for applications where the lower voltage ceiling is acceptable.

Extended Temperature Range Alternatives: LT3756HMSE-2#PBF, LT3791HFE#PBF, LT8391AHUFD#PBF, and LT8391IFE#PBF all support operating temperatures to 150°C (junction temperature), providing thermal margin beyond the HV9930LG-G's 125°C limit. These Analog Devices parts require package redesign but offer enhanced topological flexibility (SEPIC, Flyback support) and extended frequency ranges.

High-Voltage Constraint: The HV9930LG-G's 200V maximum supply voltage is unique among the listed substitutes. If system design requires operation above 100V, no direct substitute exists in this list. The AT9933LG-G (75V max) and LT3756HMSE-2#PBF (100V max) represent the highest alternatives available.

Compact Package Alternative: RT8462ZQW in 16-WQFN format provides the smallest footprint among substitutes while maintaining buck-boost topology and PWM dimming. This part is limited to 36V maximum supply voltage and is suitable for lower-voltage backlight and lighting applications.

Automotive-Grade Options: AT9933LG-G, LT8391AHUFD#PBF, and LT8391IFE#PBF carry automotive qualification (AEC-Q100), meeting requirements for automotive lighting and display applications.

Frequently Asked Questions (FAQ)

Q: Can AT9933LG-G replace HV9930LG-G without PCB changes? A: Yes. AT9933LG-G uses the identical 8-SOIC package and pinout. No PCB layout modifications are required. However, verify that your system's maximum supply voltage does not exceed 75V, as AT9933LG-G is rated to 75V maximum compared to HV9930LG-G's 200V.

Q: What is the key difference between HV9930LG-G and the Analog Devices substitutes? A: The primary differences are package format and operating temperature range. Analog Devices parts (LT3791HFE#PBF, LT8391AHUFD#PBF, LT8391IFE#PBF, LT3756HMSE-2#PBF) support junction temperatures to 150°C versus 125°C for the HV9930LG-G. These parts also offer additional topological options (SEPIC, Flyback) and require PCB redesign due to different package formats.

Q: Is LM3429MHX/NOPB a suitable substitute? A: LM3429MHX/NOPB from Texas Instruments is functionally compatible, supporting buck, boost, and SEPIC topologies with PWM and analog dimming. The 14-HTSSOP package differs from the 8-SOIC format, requiring PCB layout changes. This part is suitable when additional topological flexibility and automotive qualification are required.

Q: Which substitute has the smallest package footprint? A: RT8462ZQW in 16-WQFN (3x3) format offers the most compact solution. This part is limited to 36V maximum supply voltage and is optimized for backlight and lighting applications in space-constrained designs.

Q: Can I use a substitute rated for lower maximum voltage than my system requires? A: No. If your system operates at supply voltages exceeding a substitute part's maximum rating, that part is not suitable. For example, if your system requires 150V supply, only the HV9930LG-G (200V max) is acceptable from this list.

Q: What does MSL rating mean for component selection? A: MSL (Moisture Sensitivity Level) indicates how long a component can be exposed to ambient conditions before soldering. MSL 1 (Unlimited) parts like HV9930LG-G have no time restrictions. MSL 3 (168 Hours) parts like AT9933LG-G and RT8462ZQW must be soldered within 168 hours of package opening. Plan inventory and assembly schedules accordingly.

Q: Are all substitutes RoHS3 compliant? A: Yes. All listed substitutes are RoHS3 compliant, matching the HV9930LG-G's environmental compliance status.

Q: Which substitute is best for automotive applications? A: AT9933LG-G, LT8391AHUFD#PBF, and LT8391IFE#PBF carry AEC-Q100 automotive qualification. Among these, AT9933LG-G requires no PCB changes due to identical packaging, making it the preferred choice for automotive designs using the HV9930LG-G.

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