ICM7218AI/D LED Driver Die - Equivalent & Substitute Parts

Part Overview

The ICM7218AI/D is a 7-segment, 8-digit LED driver die manufactured by Analog Devices Inc./Maxim Integrated. This component is classified as a Power Management PMIC and is designed to drive LED display configurations with serial interface capability. The product status is obsolete, making identification of equivalent and substitute parts essential for ongoing design support, legacy system maintenance, and component procurement planning.

Substiute Parts

ICM7218AI/D

Analog Devices Inc./Maxim IntegratedIn Stock: 1072ICM7218AI/D Datasheet

Current PartRFQ

ICM7218CIQI+

Analog Devices Inc./Maxim IntegratedIn Stock: 1115ICM7218CIQI+ Datasheet

MFR RecommendedRFQ

ICM7218AIJIR5254

Renesas Electronics CorporationIn Stock: 1533ICM7218AIJIR5254 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ICM7218AI/D is determined by the following critical parameters:

• Base product number (ICM7218 family)
• Display type (LED) and configuration (7 Segment, 8 Digits)
• Electrical specifications: supply current (250 µA), supply voltage range (2V ~ 6V)
• Interface type (Serial)
• Operating temperature range (-20°C ~ 85°C)
• RoHS3 compliance and MSL rating

The identified substitute parts maintain the core ICM7218 architecture and support 7-segment, 8-digit LED driving functionality. However, variations exist in packaging format, mounting technology, interface implementation, and electrical operating ranges. These variations determine suitability for specific application contexts.

Parameter Comparison

Engineering Selection Recommendations

ICM7218CIQI+ is the manufacturer-recommended substitute. This part maintains identical electrical specifications (250 µA supply current, 2V ~ 6V supply voltage, -20°C ~ 85°C operating range) and RoHS3 compliance. The primary difference is packaging: the ICM7218CIQI+ is supplied in 28-PLCC surface-mount format with parallel interface, whereas the main part is a die form with serial interface. This part carries active product status, ensuring ongoing availability and manufacturing support.

ICM7218AIJIR5254 is an alternative substitute manufactured by Renesas Electronics Corporation. This part maintains serial interface compatibility and RoHS3 compliance. However, it exhibits the following differences: supply current is elevated to 2.5 mA (versus 250 µA), minimum supply voltage is raised to 4V (versus 2V), operating temperature range is extended to -40°C ~ 85°C, and mounting type is through-hole (28-CerDip package). This part carries obsolete product status. Selection of this substitute requires confirmation that the elevated supply current and restricted minimum voltage are compatible with the target application.

Frequently Asked Questions (FAQ)

Q: Can ICM7218CIQI+ directly replace ICM7218AI/D in all applications?

A: ICM7218CIQI+ maintains electrical compatibility in terms of supply current, voltage range, and operating temperature. However, the interface changes from serial to parallel, and packaging changes from die to 28-PLCC surface-mount. Circuit redesign is required to accommodate the parallel interface and different pinout. The 28-PLCC package is suitable for PCB assembly, whereas the die form requires hybrid integration or direct die attachment.

Q: What are the implications of the interface difference between serial and parallel?

A: The ICM7218AI/D uses serial interface for data communication, while ICM7218CIQI+ uses parallel interface. These require different control circuitry and signal timing. Serial interface typically requires fewer signal lines but operates at lower data rates. Parallel interface requires more signal lines but enables faster data transfer. Application firmware and hardware must be adapted accordingly.

Q: Is ICM7218AIJIR5254 suitable as a substitute if supply current is a critical constraint?

A: No. The ICM7218AIJIR5254 operates at 2.5 mA supply current, which is 10 times higher than the 250 µA specification of the main part. Applications with strict power budget constraints cannot accommodate this substitute. Additionally, the minimum supply voltage is 4V, eliminating compatibility with 2V ~ 3V supply rails.

Q: What is the significance of product status (Active vs. Obsolete)?

A: Active product status indicates ongoing manufacturing, quality assurance, and long-term availability. Obsolete status indicates end-of-life designation; future availability is not guaranteed. ICM7218CIQI+ is recommended for new designs due to active status. Obsolete parts should be used only for legacy system maintenance or when no active alternatives exist.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All parts listed—ICM7218AI/D, ICM7218CIQI+, and ICM7218AIJIR5254—carry ROHS3 Compliant designation and MSL rating of 1 (Unlimited), ensuring environmental compliance and moisture handling compatibility.