MIC2198BML-TR Buck Regulator Controller Equivalent & Substitute Parts

Part Overview

The MIC2198BML-TR is a buck regulator positive output step-down DC-DC controller IC manufactured by Microchip Technology in a 12-MLF® (4x4) package. This component functions as a transistor driver for single-output, single-phase buck topology applications with a supply voltage range of 4.5V to 32V and a switching frequency of 500kHz.

The MIC2198BML-TR is currently discontinued at DiGi Electronics. Identifying equivalent substitute parts is necessary to maintain design continuity and ensure component availability for production and maintenance applications.

Substiute Parts

MIC2198BML-TR

Microchip TechnologyIn Stock: 774MIC2198BML-TR Datasheet

Current PartRFQ

MIC2199YML-TR

Microchip TechnologyIn Stock: 5896MIC2199YML-TR Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

The MIC2199YML-TR qualifies as a parametric equivalent to the MIC2198BML-TR based on the following substitution criteria:

Matching Parameters:

• Manufacturer: Microchip Technology
• Category: Power Management (PMIC)
• Function: Step-Down DC-DC Controller
• Output Type: Transistor Driver
• Topology: Buck
• Number of Outputs: 1
• Output Phases: 1
• Voltage - Supply (Vcc/Vdd): 4.5V ~ 32V
• Synchronous Rectifier: Yes
• Operating Temperature: -40°C ~ 125°C (TJ)
• Mounting Type: Surface Mount
• Package / Case: 12-VFDFN Exposed Pad, 12-MLF®
• Control Features: Enable

Differing Parameters:

• Frequency - Switching: 300kHz (vs. 500kHz in MIC2198BML-TR)
• Duty Cycle (Max): 85% (vs. 76% in MIC2198BML-TR)
• Product Status: Active (vs. Discontinued)
• RoHS Status: ROHS3 Compliant (vs. RoHS non-compliant)

The MIC2199YML-TR maintains electrical and mechanical compatibility through identical supply voltage range, package form factor, and core controller functionality. Differences in switching frequency and maximum duty cycle represent design variations within the same product family.

Parameter Comparison

Engineering Selection Recommendations

The MIC2199YML-TR is available as an active product with ROHS3 compliance, addressing the discontinued status of the MIC2198BML-TR. Both parts share identical electrical specifications for supply voltage range, package form factor, and core controller architecture.

Selection between these parts depends on application-specific requirements for switching frequency and maximum duty cycle. The MIC2198BML-TR operates at 500kHz with a 76% maximum duty cycle, while the MIC2199YML-TR operates at 300kHz with an 85% maximum duty cycle. Applications requiring higher switching frequency should retain the MIC2198BML-TR specification if available through alternative suppliers. Applications tolerant of lower switching frequency benefit from the MIC2199YML-TR's active product status and regulatory compliance.

Frequently Asked Questions (FAQ)

Q: Can the MIC2199YML-TR directly replace the MIC2198BML-TR in existing designs?

A: The MIC2199YML-TR shares identical package form factor (12-VFDFN Exposed Pad, 12-MLF®), supply voltage range (4.5V ~ 32V), and core controller functionality. Pin-level compatibility requires verification against device datasheets. The primary design differences are switching frequency (300kHz vs. 500kHz) and maximum duty cycle (85% vs. 76%), which may affect output filter component selection and transient response characteristics.

Q: What are the key differences between MIC2198BML-TR and MIC2199YML-TR?

A: The MIC2199YML-TR operates at a lower switching frequency (300kHz) compared to the MIC2198BML-TR (500kHz) and supports a higher maximum duty cycle (85% vs. 76%). The MIC2199YML-TR is currently active with ROHS3 compliance, while the MIC2198BML-TR is discontinued and RoHS non-compliant.

Q: Are both parts available in the same packaging?

A: Yes. Both the MIC2198BML-TR and MIC2199YML-TR use the 12-VFDFN Exposed Pad, 12-MLF® package with identical mechanical dimensions and pin configuration.

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

A: Both parts have a Moisture Sensitivity Level (MSL) of 3, rated for 168 hours of exposure.

Q: Does the switching frequency difference affect circuit design?

A: Yes. The switching frequency difference (500kHz vs. 300kHz) affects the selection of output filter inductors and capacitors. Lower switching frequency typically requires larger filter components. Consult device datasheets for detailed design guidance specific to each part number.