CL7SG-G LED Driver IC Equivalent & Substitute Parts

Part Overview

The CL7SG-G is a linear LED driver IC manufactured by Microchip Technology, designed for single-output lighting and signage applications. This active product delivers 100mA output current with PWM dimming capability across a wide supply voltage range of 6.5V to 90V. The device is packaged in 8-SOIC with an exposed pad and is RoHS3 compliant with unlimited moisture sensitivity rating.

Substitute parts are identified when design requirements necessitate alternative packaging formats, higher current capacity, different supply voltage specifications, or when primary component availability is constrained. The following equivalent devices maintain functional compatibility within specified electrical and mechanical parameters.

Substiute Parts

CL7SG-G

Microchip TechnologyIn Stock: 1070CL7SG-G Datasheet

Current PartRFQ

BCR420UFD-7

Diodes IncorporatedIn Stock: 18103BCR420UFD-7 Datasheet

MFR RecommendedRFQ

BCR420UW6Q-7

Diodes IncorporatedIn Stock: 3197BCR420UW6Q-7 Datasheet

MFR RecommendedRFQ

BCR421UE6327HTSA1

Infineon TechnologiesIn Stock: 3458BCR421UE6327HTSA1 Datasheet

MFR RecommendedRFQ

TSCR402CX6 RFG

Taiwan Semiconductor CorporationIn Stock: 1380TSCR402CX6 RFG Datasheet

MFR RecommendedRFQ

XR46083ESFTR-ADJ

MaxLinear, Inc.In Stock: 1445XR46083ESFTR-ADJ Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility is determined by the following criteria derived from the CL7SG-G specifications:

Primary Substitution Parameters:

• Single output configuration (Number of Outputs = 1)
• Linear topology
• PWM dimming capability (where applicable)
• Surface mount technology
• RoHS3 compliance
• MSL 1 rating (unlimited moisture sensitivity)

Secondary Compatibility Factors:

• Output current capacity: 100mA baseline (substitutes may exceed this specification)
• Supply voltage range: Minimum 6.5V to maximum 90V (substitutes with lower maximum voltage require application verification)
• Package format: Alternative packages acceptable if PCB layout permits
• Operating temperature range: -40°C minimum preferred for consistency

The identified substitute parts meet the core functional requirements of single-channel linear LED driver operation with surface mount packaging and equivalent compliance certifications.

Parameter Comparison

Engineering Selection Recommendations

Active Status Substitutes (Preferred):

BCR420UFD-7 and BCR420UW6Q-7 are both active products from Diodes Incorporated with higher current capacity (350mA) than the CL7SG-G. BCR420UW6Q-7 includes PWM dimming and carries AEC-Q101 automotive qualification. Both devices are RoHS3 compliant with MSL 1 rating. The reduced maximum supply voltage (40V) requires verification against application requirements exceeding this specification.

BCR421UE6327HTSA1 from Infineon Technologies is an active product with PWM dimming and 200mA output current. This device carries AEC-Q101 automotive qualification and RoHS3 compliance. The maximum supply voltage specification of 4.5V represents a significant constraint for applications requiring higher input voltages.

Obsolete Status Substitutes (Limited Availability):

TSCR402CX6 RFG from Taiwan Semiconductor Corporation is marked obsolete with 65mA output current and no PWM dimming capability. This device carries automotive qualification but has limited future availability.

XR46083ESFTR-ADJ from MaxLinear, Inc. is obsolete with no dimming capability and MSL 2 rating (1 Year), indicating higher moisture sensitivity than the primary device. This part is not recommended for new designs.

Compliance Considerations:

All active substitute parts maintain RoHS3 compliance and MSL 1 rating consistent with the CL7SG-G. Devices with AEC-Q101 qualification (BCR420UW6Q-7, BCR421UE6327HTSA1) are suitable for automotive-grade applications.

Frequently Asked Questions (FAQ)

Q: Can BCR420UFD-7 or BCR420UW6Q-7 directly replace CL7SG-G in existing designs?

A: Direct replacement requires verification of supply voltage requirements. Both devices specify maximum 40V supply voltage compared to CL7SG-G's 90V maximum. If your application operates within 40V, these higher-current alternatives are functionally compatible. Package differences (6-UDFN and SOT-23-6 versus 8-SOIC) require PCB layout modification.

Q: What is the significance of PWM dimming in substitute selection?

A: PWM dimming capability is specified for CL7SG-G, BCR420UW6Q-7, and BCR421UE6327HTSA1. BCR420UFD-7 and TSCR402CX6 RFG do not specify PWM dimming. If PWM dimming is required for your application, select only from devices explicitly listing this feature.

Q: Why are TSCR402CX6 RFG and XR46083ESFTR-ADJ marked as obsolete?

A: Obsolete status indicates these products are no longer in active production. TSCR402CX6 RFG has limited inventory (1343 pcs) and XR46083ESFTR-ADJ has MSL 2 rating with 1-year moisture sensitivity limitation. New designs should prioritize active products: BCR420UFD-7, BCR420UW6Q-7, or BCR421UE6327HTSA1.

Q: How do output current ratings affect substitution?

A: CL7SG-G specifies 100mA output current. BCR420UFD-7 and BCR420UW6Q-7 provide 350mA (4.6× higher capacity), BCR421UE6327HTSA1 provides 200mA (2× higher capacity), and TSCR402CX6 RFG provides 65mA (lower capacity). Higher-rated devices are backward compatible for lower-current applications. Lower-rated devices are not suitable if 100mA output is required.

Q: What packaging considerations apply to these substitutes?

A: CL7SG-G uses 8-SOIC with exposed pad. Substitutes use alternative packages: BCR420UFD-7 (6-UDFN), BCR420UW6Q-7 (SOT-23-6), BCR421UE6327HTSA1 (SC-74/SOT-457), TSCR402CX6 RFG (SOT-23-6), and XR46083ESFTR-ADJ (SOT-89-5/6). Package selection affects PCB footprint, thermal performance, and board layout. Verify PCB design compatibility before substitution.

Q: Are automotive-qualified alternatives available?

A: Yes. BCR420UW6Q-7 and BCR421UE6327HTSA1 both carry AEC-Q101 automotive qualification. These devices are suitable for automotive lighting and signage applications requiring industry-standard qualification.