MIC2182BSM Equivalent & Substitute Parts

Part Overview

The MIC2182BSM is a buck regulator positive output step-down DC-DC controller IC manufactured by Microchip Technology in a 16-SSOP package. This device functions as a transistor driver for step-down topology applications with a single output phase and 300kHz switching frequency. The MIC2182BSM is currently discontinued at DiGi Electronics, making identification of equivalent and substitute parts essential for ongoing design support and production continuity.

Key Parameters

Parameter	Value
Manufacturer	Microchip Technology
Category	Power Management (PMIC)
Function	Step-Down Buck Regulator Controller
Output Type	Transistor Driver
Output Configuration	Positive
Number of Outputs	1
Output Phases	1
Voltage - Supply (Vcc/Vdd)	4.5V ~ 32V
Frequency - Switching	300kHz
Duty Cycle (Max)	86%
Synchronous Rectifier	Yes
Clock Sync	Yes
Control Features	Enable, Soft Start
Operating Temperature	-40°C ~ 85°C (TA)
Package / Case	16-SSOP (0.209", 5.30mm Width)
Mounting Type	Surface Mount

Substitute Part Grouping Explanation

Substitute parts for the MIC2182BSM are identified based on strict electrical and mechanical parameter matching within the Microchip Technology MIC2182 product family. All substitute candidates maintain identical specifications across the following critical parameters:

Buck topology with positive output configuration
Single output phase architecture
4.5V to 32V supply voltage range
300kHz switching frequency
86% maximum duty cycle
Synchronous rectifier and clock sync capability
Enable and soft start control features
-40°C to 85°C operating temperature range
16-SSOP surface mount package (0.209", 5.30mm width)

Substitution within this family is determined by product status, packaging format, and compliance certifications rather than functional parameters, as all variants share identical electrical characteristics.

Parameter Comparison

Parameter	MIC2182BSM	MIC2182YSM	MIC2182-5.0YSM
Manufacturer	Microchip Technology	Microchip Technology	Microchip Technology
Function	Step-Down Buck Controller	Step-Down Buck Controller	Step-Down Buck Controller
Output Type	Transistor Driver	Transistor Driver	Transistor Driver
Output Configuration	Positive	Positive	Positive
Number of Outputs	1	1	1
Output Phases	1	1	1
Voltage - Supply (Vcc/Vdd)	4.5V ~ 32V	4.5V ~ 32V	4.5V ~ 32V
Frequency - Switching	300kHz	300kHz	300kHz
Duty Cycle (Max)	86%	86%	86%
Synchronous Rectifier	Yes	Yes	Yes
Clock Sync	Yes	Yes	Yes
Control Features	Enable, Soft Start	Enable, Soft Start	Enable, Soft Start
Operating Temperature	-40°C ~ 85°C (TA)	-40°C ~ 85°C (TA)	-40°C ~ 85°C (TA)
Package / Case	16-SSOP	16-SSOP	16-SSOP
Mounting Type	Surface Mount	Surface Mount	Surface Mount
Product Status	Discontinued	Active	Active
RoHS Status	RoHS Non-Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	2 (1 Year)	2 (1 Year)

Engineering Selection Recommendations

For applications currently using the MIC2182BSM, both MIC2182YSM and MIC2182-5.0YSM serve as direct functional equivalents with identical electrical and mechanical specifications. Selection between active alternatives should be based on the following criteria:

MIC2182YSM is recommended for designs requiring ROHS3 compliance and standard packaging in tube format. This part maintains active product status with established supply availability.

MIC2182-5.0YSM is recommended for applications with higher inventory requirements or extended lead time mitigation, as this variant maintains the largest stock position while providing identical electrical performance and ROHS3 compliance.

Both substitute parts feature improved compliance certifications compared to the discontinued MIC2182BSM. The transition from MSL 1 to MSL 2 requires standard moisture control procedures during storage and handling but does not affect functional performance or circuit compatibility.

Frequently Asked Questions (FAQ)

Q: Are MIC2182YSM and MIC2182-5.0YSM electrically identical to MIC2182BSM?

A: Yes. Both substitute parts maintain identical electrical specifications including supply voltage range (4.5V ~ 32V), switching frequency (300kHz), duty cycle (86%), and all control features. Circuit-level performance is equivalent.

Q: What is the difference between MIC2182YSM and MIC2182-5.0YSM?

A: Both parts are electrically and mechanically identical. The primary difference is inventory availability and packaging designation. Selection can be based on supply chain requirements and lead time considerations.

Q: Does the change in RoHS status affect circuit compatibility?

A: No. The transition from RoHS non-compliant to ROHS3 compliant status reflects manufacturing process improvements and does not alter electrical performance or pin compatibility. Designs using MIC2182BSM require no circuit modifications to accommodate either substitute.

Q: What is the impact of the MSL rating change from 1 to 2?

A: MSL 2 requires moisture control during storage (1-year shelf life with proper desiccant storage) compared to MSL 1 (unlimited shelf life). This does not affect circuit operation but requires standard moisture management procedures during component handling and assembly.

Q: Are all three parts pin-compatible?

A: Yes. All three parts use the 16-SSOP package with identical pinout and mechanical dimensions (0.209", 5.30mm width). Direct board-level substitution is possible without layout modifications.

Q: Why is MIC2182BSM discontinued?

A: Product discontinuation reflects Microchip Technology's transition to active variants with improved compliance certifications. MIC2182YSM and MIC2182-5.0YSM provide equivalent functionality with current manufacturing support.

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