VIPER011LS Equivalent & Substitute Parts

Part Overview

The VIPER011LS is an offline switching converter IC manufactured by STMicroelectronics, designed for buck, buck-boost, and flyback topology applications. This Power Management (PMIC) component operates at 60kHz switching frequency with 7W power capability and integrates internal switching functionality with comprehensive fault protection. The device is actively produced and maintains full RoHS3 compliance with REACH unaffected status. Substitute parts are identified to provide design flexibility when the primary part number is unavailable or when specific operational parameters require alternative configurations.

Substiute Parts

VIPER011LS

STMicroelectronicsIn Stock: 2891VIPER011LS Datasheet

Current PartRFQ

VIPER011XS

STMicroelectronicsIn Stock: 2166VIPER011XS Datasheet

Parametric EquivalentRFQ

VIPER012LS

STMicroelectronicsIn Stock: 2775VIPER012LS Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the VIPER011LS are determined by electrical and mechanical compatibility within the offline switching converter IC category. The substitution logic is based on the following critical parameters:

Electrical Compatibility Criteria:

• Voltage breakdown rating (800V)
• Supply voltage range (4.5V ~ 30V)
• Start-up voltage (8V)
• Power rating (7W)
• Duty cycle (80%)
• Topology support (Buck, Buck-Boost, Flyback)
• Fault protection features (Current Limiting, Over Temperature, Over Voltage, Short Circuit)
• Operating temperature range (-40°C ~ 150°C)

Mechanical Compatibility Criteria:

• Package type (10-SOP, 0.154" width, 3.90mm)
• Surface mount configuration
• Supplier device package (10-SSOP)

Regulatory Compliance Criteria:

• RoHS3 compliance
• REACH unaffected status
• Moisture sensitivity level (MSL 3)

Substitute parts may differ in switching frequency while maintaining all other electrical and mechanical parameters. The VIPER011XS operates at 30kHz instead of 60kHz, and the VIPER012LS maintains the 60kHz frequency but uses an alternative base product number designation.

Parameter Comparison

Engineering Selection Recommendations

All three parts—VIPER011LS, VIPER011XS, and VIPER012LS—are active products manufactured by STMicroelectronics with identical regulatory compliance profiles. Each part maintains RoHS3 compliance and REACH unaffected status, ensuring suitability for regulated applications.

VIPER011LS Selection: Use this part number when 60kHz switching frequency is required for the application design. This is the primary specification for the VIPER011 base product series.

VIPER011XS Selection: Use this part number when 30kHz switching frequency is acceptable or preferred. The reduced switching frequency may be beneficial for applications with specific EMI or thermal requirements. All other electrical and mechanical parameters remain identical to VIPER011LS.

VIPER012LS Selection: Use this part number as an alternative when VIPER011LS availability is constrained. This part maintains the 60kHz switching frequency and all electrical specifications, with the distinction of using the VIPER012 base product designation.

All three parts are pin-compatible within the 10-SSOP package and support identical topology configurations (Buck, Buck-Boost, Flyback). Selection between these parts should be based on application-specific switching frequency requirements and component availability.

Frequently Asked Questions (FAQ)

Q: Can VIPER011XS be used as a direct replacement for VIPER011LS?

A: VIPER011XS is electrically and mechanically compatible with VIPER011LS for all parameters except switching frequency. VIPER011XS operates at 30kHz while VIPER011LS operates at 60kHz. Direct substitution is possible only if the application design accommodates the lower switching frequency.

Q: What is the primary difference between VIPER011LS and VIPER012LS?

A: Both parts operate at 60kHz switching frequency and share identical electrical specifications and package configuration. The distinction is the base product number designation (VIPER011 versus VIPER012). Both are functionally equivalent for 60kHz applications.

Q: Are all three parts pin-compatible?

A: Yes. VIPER011LS, VIPER011XS, and VIPER012LS all use the 10-SOP (10-SSOP) package with 0.154" width and 3.90mm dimensions. Pin compatibility is maintained across all three part numbers.

Q: Does switching frequency affect PCB layout requirements?

A: Switching frequency may influence EMI characteristics and component selection for filtering networks. VIPER011LS and VIPER012LS at 60kHz may require different filter component values compared to VIPER011XS at 30kHz. Application-specific circuit design validation is necessary when changing switching frequency.

Q: Are all parts suitable for isolated and non-isolated topologies?

A: Yes. All three parts support Buck, Buck-Boost, and Flyback topologies with output isolation capability listed as "Either," indicating support for both isolated and non-isolated configurations.

Q: What is the moisture sensitivity level for these parts?

A: All three parts have MSL 3 rating with 168-hour floor life. Standard moisture control procedures during storage and handling are required per IPC standards.

Q: Are these parts suitable for high-temperature applications?

A: Yes. All three parts operate across the temperature range of -40°C to 150°C (junction temperature), supporting extended temperature applications within this specification.