SP7619ER-L LED Driver IC Equivalent & Substitute Parts

Part Overview

The SP7619ER-L is a linear LED driver IC manufactured by MaxLinear, Inc., designed for 2-output LED backlight applications with PWM dimming capability. This device features 500mA per-channel output current, operates across a 2.5V to 5.5V supply range, and is packaged in an 8-DFN (2x3) form factor with exposed pad. The product is currently obsolete, making identification of functionally equivalent alternatives essential for ongoing design support and production continuity.

Substiute Parts

SP7619ER-L

MaxLinear, Inc.In Stock: 818SP7619ER-L Datasheet

Current PartRFQ

CL525K4-G

Microchip TechnologyIn Stock: 931CL525K4-G Datasheet

MFR RecommendedRFQ

NSV45025AT1G

onsemiIn Stock: 4158NSV45025AT1G Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the SP7619ER-L is constrained by the following critical parameters: linear topology, PWM dimming capability, dual-output configuration, 500mA per-channel current rating, and 2.5V–5.5V supply voltage range. The substitute parts listed represent alternatives that address specific design scenarios where the obsolete SP7619ER-L cannot be sourced.

The substitutes provided operate under different electrical and mechanical constraints:

• CL525K4-G: Single-output linear LED driver with 25mA current rating, 4.75V–90V supply range, and TO-252 packaging. Suitable for applications requiring lower current and higher supply voltage tolerance.
• NSV45025AT1G: Current regulator with 25mA output, 45V input rating, SOD-123 packaging, and automotive-grade qualification (AEC-Q101). Applicable for high-voltage, low-current LED regulation scenarios.

These substitutes do not provide direct functional equivalence to the SP7619ER-L due to differences in output current, supply voltage range, number of outputs, and package form factor. Selection must be based on specific application requirements.

Parameter Comparison

Engineering Selection Recommendations

Selection of substitute parts for the obsolete SP7619ER-L must account for the following factors:

CL525K4-G is an active product from Microchip Technology with ROHS3 compliance and extended operating temperature range (-40°C to 125°C). However, it operates at significantly lower output current (25mA vs. 500mA) and requires a minimum supply voltage of 4.75V, which exceeds the SP7619ER-L's 2.5V minimum. This part is suitable only for applications with reduced current requirements and higher supply voltage availability.

NSV45025AT1G is an active automotive-grade current regulator from onsemi with AEC-Q101 qualification, ROHS3 compliance, and unlimited MSL rating. It provides 25mA output current and accepts up to 45V input. The automotive qualification and extended temperature range (-55°C to 150°C) make this suitable for automotive lighting applications. Like CL525K4-G, the 25mA current rating is substantially lower than the SP7619ER-L specification.

Both substitutes represent significant departures from the original SP7619ER-L electrical specifications. Design migration requires comprehensive circuit re-evaluation and validation.

Frequently Asked Questions (FAQ)

Q: Can CL525K4-G or NSV45025AT1G directly replace the SP7619ER-L in existing designs?

A: No. Both substitutes operate at 25mA per-channel output current, compared to the SP7619ER-L's 500mA specification. Direct substitution would result in insufficient LED drive current. Circuit redesign is required.

Q: What is the primary difference between CL525K4-G and NSV45025AT1G?

A: CL525K4-G is a linear LED driver with PWM dimming capability, while NSV45025AT1G is a current regulator without dimming function. CL525K4-G supports supply voltages up to 90V; NSV45025AT1G is rated to 45V. NSV45025AT1G carries automotive-grade qualification (AEC-Q101).

Q: Why does the SP7619ER-L require substitution?

A: The SP7619ER-L is classified as obsolete and is no longer manufactured by MaxLinear, Inc. Continued production support and new inventory are unavailable.

Q: Are there packaging compatibility considerations?

A: Yes. The SP7619ER-L uses 8-VFDFN packaging; CL525K4-G uses TO-252 (DPAK); NSV45025AT1G uses SOD-123. Each requires different PCB footprints and layout considerations.

Q: What is the moisture sensitivity impact of these substitutes?

A: The SP7619ER-L and NSV45025AT1G both have MSL 1 (unlimited storage). CL525K4-G has MSL 3 (168-hour limit), requiring controlled storage and handling procedures.

Q: Are these substitutes RoHS compliant?

A: Both CL525K4-G and NSV45025AT1G are ROHS3 compliant. RoHS status for the obsolete SP7619ER-L is not specified in available documentation.