MP2106DK-LF-Z Equivalent & Substitute Parts

Part Overview

The MP2106DK-LF-Z is a buck switching regulator IC from Monolithic Power Systems Inc., designed for positive adjustable output applications. This device delivers 800mA output current with an adjustable output voltage range from 0.6V to 6V, operating from a 2.5V to 6V input supply. The part is classified as "Not For New Designs," indicating it has reached end-of-life status. For new applications or when stock becomes unavailable, identifying functionally equivalent substitute parts is essential for design continuity and supply chain management.

Key Parameters

Parameter	Value
Manufacturer	Monolithic Power Systems Inc.
Category	Power Management (PMIC)
Function	Step-Down (Buck)
Output Configuration	Positive Adjustable
Input Voltage Range	2.5V to 6V
Output Voltage Range	0.6V to 6V
Output Current	800mA
Switching Frequency	1.05MHz
Synchronous Rectifier	Yes
Operating Temperature	-40°C to 85°C
Package Type	10-TFSOP, 10-MSOP
RoHS Status	ROHS3 Compliant
Product Status	Not For New Designs

Substitute Part Grouping Explanation

Substitution of the MP2106DK-LF-Z is determined by the following critical parameters:

Topology & Function: Buck (step-down) switching regulator with positive adjustable output
Output Current Capability: Minimum 800mA required for direct replacement
Input Voltage Range: Must accommodate 2.5V to 6V input
Output Voltage Adjustability: Must support 0.6V minimum output voltage
Synchronous Rectification: Preferred for efficiency matching
Package Compatibility: Surface mount technology with compatible pinout
Compliance & Status: RoHS3 compliance and active product status for new designs

The MP1496SGJ-Z qualifies as a manufacturer-recommended substitute. While it operates at a higher input voltage range (4.5V to 16V) and delivers greater output current (2A versus 800mA), it maintains the core buck topology, adjustable positive output configuration, and synchronous rectification. The higher current rating provides design margin, and the extended input range accommodates broader supply scenarios. Both devices are RoHS3 compliant and manufactured by the same supplier.

Parameter Comparison

Parameter	MP2106DK-LF-Z	MP1496SGJ-Z
Manufacturer	Monolithic Power Systems Inc.	Monolithic Power Systems Inc.
Category	Power Management (PMIC)	Power Management (PMIC)
Function	Step-Down Buck	Step-Down Buck
Output Configuration	Positive Adjustable	Positive Adjustable
Input Voltage (Min)	2.5V	4.5V
Input Voltage (Max)	6V	16V
Output Voltage (Min)	0.6V	0.8V
Output Voltage (Max)	6V	15.2V
Output Current	800mA	2A
Switching Frequency	1.05MHz	500kHz
Synchronous Rectifier	Yes	Yes
Operating Temperature	-40°C to 85°C	-40°C to 125°C
Package Type	10-TFSOP, 10-MSOP	SOT-23-8 Thin, TSOT-23-8
Product Status	Not For New Designs	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

The MP1496SGJ-Z is the manufacturer-recommended substitute for the MP2106DK-LF-Z. Selection should be based on the following engineering criteria:

Product Status: The MP2106DK-LF-Z is designated "Not For New Designs," making it unsuitable for new development. The MP1496SGJ-Z carries "Active" status, confirming ongoing manufacturer support and availability.

Compliance & Certifications: Both devices maintain ROHS3 compliance, REACH unaffected status, and identical ECCN and HTSUS classifications, ensuring regulatory equivalence.

Current Capability: The MP1496SGJ-Z delivers 2A output current, exceeding the MP2106DK-LF-Z specification of 800mA. This provides design margin and accommodates higher load requirements without component substitution.

Input Voltage Range: The MP1496SGJ-Z accepts 4.5V to 16V input, compared to the original 2.5V to 6V range. Applications operating within the 4.5V to 6V overlap region require no input supply modification. Applications requiring sub-4.5V input operation cannot use this substitute.

Output Voltage Range: The MP1496SGJ-Z minimum output voltage is 0.8V versus 0.6V for the original part. Applications requiring output voltages below 0.8V are incompatible with this substitute.

Package Transition: The MP1496SGJ-Z uses SOT-23-8 packaging versus the original 10-TFSOP/10-MSOP. PCB layout redesign is required.

Frequently Asked Questions (FAQ)

Q: Can the MP1496SGJ-Z directly replace the MP2106DK-LF-Z without circuit modifications?

A: Direct replacement requires verification of three conditions: (1) input supply voltage remains within 4.5V to 16V range, (2) minimum output voltage requirement does not fall below 0.8V, and (3) PCB layout accommodates SOT-23-8 package pinout. If all conditions are met, the higher current rating and extended temperature range provide design margin. If input voltage drops below 4.5V or output voltage must be below 0.8V, this substitute is not compatible.

Q: What are the key differences between these two parts?

A: The MP1496SGJ-Z provides 2.5× higher output current (2A vs. 800mA), operates from higher input voltages (4.5V to 16V vs. 2.5V to 6V), supports higher output voltages (up to 15.2V vs. 6V), operates at lower switching frequency (500kHz vs. 1.05MHz), and uses a smaller package (SOT-23-8 vs. 10-TFSOP/10-MSOP). The MP1496SGJ-Z also supports a wider operating temperature range (-40°C to 125°C vs. -40°C to 85°C).

Q: Why is the MP2106DK-LF-Z marked "Not For New Designs"?

A: This designation indicates the part has reached end-of-life status. Monolithic Power Systems Inc. recommends the MP1496SGJ-Z for new applications, ensuring access to active product support, ongoing availability, and compliance with current manufacturing standards.

Q: Are there package compatibility concerns?

A: Yes. The MP2106DK-LF-Z uses 10-TFSOP/10-MSOP packaging, while the MP1496SGJ-Z uses SOT-23-8 packaging. These packages have different pinouts and footprints. PCB redesign is mandatory for substitution.

Q: What compliance certifications apply to both parts?

A: Both devices are ROHS3 compliant, REACH unaffected, and classified under ECCN EAR99 and HTSUS 8542.39.0001. Regulatory equivalence is confirmed.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message