MP2605DQ-LF-Z Equivalent & Substitute Parts

Part Overview

The MP2605DQ-LF-Z is an active lithium ion/polymer battery charger IC manufactured by Monolithic Power Systems Inc. in a 10-QFN (3x3) surface mount package. This single-cell charger integrates constant-current/constant-voltage charging with programmable timer functionality and over-voltage fault protection. The part is supplied in cut tape packaging and maintains active product status with full RoHS3 and REACH compliance. Substitute parts are identified when packaging format differs or inventory availability requires alternative sourcing while maintaining identical electrical and mechanical specifications.

Key Parameters

Parameter	Value
Manufacturer	Monolithic Power Systems Inc.
Category	Power Management (PMIC)
Battery Chemistry	Lithium Ion/Polymer
Number of Cells	1
Charge Current - Max	1A
Battery Pack Voltage	4.2V
Voltage - Supply (Max)	6.5V
Operating Temperature	-40°C ~ 85°C (TA)
Package / Case	10-VFDFN Exposed Pad
Supplier Device Package	10-QFN (3x3)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)
Product Status	Active

Substitute Part Grouping Explanation

Substitute parts for the MP2605DQ-LF-Z are qualified based on identical electrical specifications and mechanical compatibility. The substitution criteria are:

Battery chemistry: Lithium Ion/Polymer
Single-cell charging architecture
Maximum charge current: 1A
Battery pack voltage: 4.2V
Maximum supply voltage: 6.5V
Operating temperature range: -40°C ~ 85°C
Package type: 10-VFDFN Exposed Pad / 10-QFN (3x3)
Surface mount configuration
Programmable timer and over-voltage protection features

The primary difference between the main part and substitutes is packaging format: MP2605DQ-LF-Z is supplied in cut tape (CT), while MP2605DQ-LF-P and MP26121DQ-LF-P are supplied in tape & reel (TR) format. Both packaging formats are compatible with automated assembly processes and contain identical die and electrical performance.

Parameter Comparison

Parameter	MP2605DQ-LF-Z	MP2605DQ-LF-P	MP26121DQ-LF-P
Manufacturer	Monolithic Power Systems Inc.	Monolithic Power Systems Inc.	Monolithic Power Systems
Packaging	Cut Tape (CT)	Tape & Reel (TR)	Tape & Reel (TR)
Battery Chemistry	Lithium Ion/Polymer	Lithium Ion/Polymer	Lithium Ion/Polymer
Number of Cells	1	1	1
Charge Current - Max	1A	1A	1A
Battery Pack Voltage	4.2V	4.2V	4.2V
Voltage - Supply (Max)	6.5V	6.5V	6.5V
Operating Temperature	-40°C ~ 85°C (TA)	-40°C ~ 85°C (TA)	-40°C ~ 85°C (TA)
Package / Case	10-VFDFN Exposed Pad	10-VFDFN Exposed Pad	10-VFDFN Exposed Pad
Supplier Device Package	10-QFN (3x3)	10-QFN (3x3)	10-QFN (3x3)
Mounting Type	Surface Mount	Surface Mount	Surface Mount
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Product Status	Active	Active	Active
Current Inventory	25400 Pcs	842 Pcs	1317 Pcs

Engineering Selection Recommendations

All three parts maintain active product status and full compliance with RoHS3 and REACH regulations. Selection between MP2605DQ-LF-Z, MP2605DQ-LF-P, and MP26121DQ-LF-P is determined by packaging requirements and inventory availability rather than electrical performance.

MP2605DQ-LF-Z in cut tape format is suitable for manual assembly, small-batch production, or applications where individual component handling is required. MP2605DQ-LF-P and MP26121DQ-LF-P in tape & reel format are optimized for high-volume automated pick-and-place assembly operations. The MP2605DQ-LF-Z offers the highest current inventory level at 25400 units, providing supply continuity for sustained production requirements.

Frequently Asked Questions (FAQ)

Q: Can MP2605DQ-LF-P replace MP2605DQ-LF-Z in production?

A: Yes. Both parts are electrically and mechanically identical. The difference is packaging format: cut tape versus tape & reel. Tape & reel format is compatible with standard automated assembly equipment. Verify your assembly process supports tape & reel input before substitution.

Q: What is the difference between MP2605DQ-LF-Z and MP26121DQ-LF-P?

A: Both parts share identical electrical specifications, package type, and performance characteristics. The base product numbers differ (MP2605 versus MP26121), but all critical parameters including charge current, voltage ratings, temperature range, and fault protection are equivalent. Packaging differs: MP2605DQ-LF-Z is cut tape; MP26121DQ-LF-P is tape & reel.

Q: Are all three parts suitable for the same PCB design?

A: Yes. All three parts use the 10-VFDFN Exposed Pad package with identical pinout and footprint. PCB layout and schematic connections remain unchanged across all three part numbers.

Q: Does packaging format affect electrical performance?

A: No. Cut tape and tape & reel packaging contain identical die and electrical characteristics. Packaging format only affects handling, storage, and assembly process compatibility.

Q: Which part should I select for high-volume production?

A: MP2605DQ-LF-P or MP26121DQ-LF-P in tape & reel format are optimized for automated assembly at production scale. Both support standard pick-and-place equipment and reel handling systems.

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