The LTC4080XEDD#PBF from Analog Devices Inc. is a single-cell lithium-ion and lithium-polymer battery charger IC housed in a compact 10-DFN (3x3mm) package with exposed pad for enhanced thermal performance. This device addresses the charging requirements of portable electronics and space-constrained embedded systems where board area and thermal management are design priorities.
The charger delivers up to 525mA maximum charge current with constant-current programmable control, enabling designers to tailor charging profiles to specific battery capacities and application thermal limits. The device operates from supply voltages up to 5.5V and regulates output to the standard 4.2V termination voltage for single-cell lithium-based chemistries. The programmable current capability allows optimization between charge time and heat dissipation, particularly relevant in handheld devices, wireless sensors, and battery-powered medical instruments.
Surface-mount 10-WFDFN packaging with a 3x3mm footprint makes the LTC4080XEDD#PBF suitable for miniaturized designs including wearables, Bluetooth peripherals, and IoT edge nodes. The exposed pad construction facilitates heat transfer to the PCB, supporting higher charge currents in thermally limited environments. The device operates across a 0°C to 70°C ambient temperature range, covering typical consumer and industrial operating conditions.
With active product status and RoHS3 compliance, the LTC4080XEDD#PBF integrates into modern supply chains and supports lead-free manufacturing processes. MSL-1 rating simplifies handling and storage logistics, eliminating bake-out requirements prior to reflow. The lithium-ion polymer charger configuration addresses both cylindrical cell and pouch cell applications, providing flexibility across mechanical form factors.
This single-cell li-ion battery charger IC serves applications where USB-powered charging, adapter-based charging, or solar-harvested charging require a controlled current source with voltage regulation. The programmable charge current feature enables designers to balance charging speed against system thermal budget, adapting the same silicon to varied end-product requirements. Typical deployment scenarios include portable medical diagnostics, asset tracking tags, wireless earbuds, and rechargeable tool batteries where single-cell lithium chemistries dominate due to voltage and energy density characteristics.
LTC4080XEDD#PBF (1)
Replacement Search Context for Analog Devices Inc. LTC4080XEDD#PBF Single-Cell Li-Ion Charger
When the Analog Devices Inc. LTC4080XEDD#PBF is unavailable, near end-of-life in a specific supply chain, or being reviewed for cost and sourcing flexibility, selecting a replacement is not only a matter of matching “1-cell Li-Ion charger” in a catalog. The substitute must fit the charging profile, battery regulation voltage, thermal behavior, package constraints, charge-current programming method, and system-level protection strategy.
Potential equivalent or alternative part numbers to evaluate include:
LTC4081EDD#PBF
from Analog Devices Inc.,
LTC4081EDD#PBF
Analog Devices Inc.
IC BATT CHG LI-ION 1CELL 10DFN
27338
LTC4054ES5-4.2#TRMPBF
from Analog Devices Inc.,
LTC4054ES5-4.2#TRMPBF
Analog Devices Inc.
IC BATT CHG LI-ION 1CEL TSOT23-5
11876
MCP73831T-2ACI/OT
from Microchip Technology,
MCP73831T-2ACI/OT
Microchip Technology
IC BATT CNTL LI-ION 1CEL SOT23-5
29794
BQ24040DSQT
from Texas Instruments, and
BQ24040DSQT
Texas Instruments
IC BATT CHG LI-ION 1CELL 10SON
7732
STBC08PMR
from STMicroelectronics. Among these,
STBC08PMR
STMicroelectronics
IC BATT CHG LI-ION 1CELL 6DFN
41400
LTC4081EDD#PBF
is the closest listed substitute, while the others are functional alternatives that may require schematic, PCB, firmware/status-signal, and qualification review.
LTC4081EDD#PBF
Analog Devices Inc.
IC BATT CHG LI-ION 1CELL 10DFN
27338
What the Analog Devices Inc. LTC4080XEDD#PBF Defines Before Selecting an Equivalent
The LTC4080XEDD#PBF is a power-management IC designed as a single-cell Lithium-Ion/Polymer battery charger. It supports a 4.2 V battery regulation voltage, programmable constant charge current up to 525 mA, and operates from a supply voltage up to 5.5 V. It is supplied in a 10-WFDFN exposed-pad package, with the supplier package identified as 10-DFN 3 mm x 3 mm. The device is surface-mount, RoHS3 compliant, MSL 1, and intended for 0°C to 70°C ambient operating conditions.
From a replacement perspective, these parameters influence several engineering checks:
- The 4.2 V regulation voltage must match the battery chemistry and protection design. A charger with 4.35 V or 4.4 V regulation would not be a safe direct substitute for a standard 4.2 V Li-Ion/Polymer cell unless the battery pack is specified for that voltage.
- The 525 mA maximum charge-current class places the LTC4080XEDD#PBF in the low-to-medium current linear charger category. Alternatives with higher current capability can be used only if the programmed current, thermal layout, input source capability, and battery charge rating are controlled.
- The 5.5 V maximum supply range suggests use in USB-powered or regulated 5 V systems. Replacements with wider input tolerance may improve robustness, but devices with higher dropout, different UVLO thresholds, or different input-current behavior may affect charge start-up.
- The 10-DFN 3 mm x 3 mm exposed-pad package affects thermal dissipation and PCB routing. A package-compatible substitute is easier to qualify, while SOT-23, WSON, DFN-6, or QFN alternatives usually require layout redesign.
- Typical applications include handheld instruments, rechargeable accessories, portable sensors, compact consumer devices, USB-powered battery systems, and space-constrained embedded products using a single Li-Ion or Li-Polymer cell. In these systems, replacement selection should balance charge accuracy, thermal regulation, safety monitoring, package availability, and assembly compatibility rather than only nominal charge current.
Candidate LTC4080XEDD#PBF Replacement Part Numbers and Fit Analysis
| Manufacturer | Part Number | Key Specifications | Product Features | Typical Applications | Why It Can Replace the Original Part | Main Differences or Limitations | Recommended Usage |
|---|---|---|---|---|---|---|---|
| Analog Devices Inc. |
LTC4081EDD#PBF
Analog Devices Inc.
IC BATT CHG LI-ION 1CELL 10DFN
27338
| Single-cell Li-Ion/Polymer charger family device; 4.2 V battery class; DFN-style package | Closely related Analog Devices charger IC; intended for compact battery-powered designs | Portable products, USB-powered rechargeable devices, compact embedded systems | Listed as a substitute and likely the closest engineering candidate for LTC4080XEDD#PBF replacement evaluation | Pin functions, charge-status behavior, and any internal control differences should be verified against the LTC4080XEDD#PBF schematic | First candidate for same-vendor replacement where minimal electrical redesign is preferred |
| Analog Devices Inc. |
LTC4054ES5-4.2#TRMPBF
Analog Devices Inc.
IC BATT CHG LI-ION 1CEL TSOT23-5
11876
| Single-cell Li-Ion charger; 4.2 V regulation; programmable charge current; SOT-23-5 package | Simple standalone linear charger with compact pin count | Small portable electronics, low-component-count charging circuits | Matches the same battery chemistry and 4.2 V charging requirement | Different package and pinout; may not support the same status, thermal, or control behavior as the LTC4080XEDD#PBF | Suitable for redesigns where a smaller SOT-23 charger is acceptable |
| Microchip Technology |
MCP73831T-2ACI/OT
Microchip Technology
IC BATT CNTL LI-ION 1CEL SOT23-5
29794
| Single-cell Li-Ion/Li-Poly linear charger; 4.2 V regulation option; programmable charge current up to 500 mA class; SOT-23-5 | Widely used standalone charger with simple external programming resistor | Wearables, portable sensors, USB-charged devices, compact battery products | Similar charge-current range and 4.2 V single-cell charging function | Not pin-compatible; thermal behavior, status output logic, and charge termination details differ | Good low-cost functional alternative for new PCB layouts |
| Texas Instruments |
BQ24040DSQT
Texas Instruments
IC BATT CHG LI-ION 1CELL 10SON
7732
| Single-cell Li-Ion charger; 4.2 V regulation option; higher current capability than LTC4080XEDD#PBF; WSON package | Integrated safety timer, thermal regulation, input and charge status functions depending on configuration | Higher-feature portable systems, USB-powered devices needing more monitoring | Can perform the same charging role while adding system-monitoring features | More complex interface; package and pinout differ; higher current capability must be programmed to battery limits | Recommended when additional charger supervision or higher design margin is desired |
| STMicroelectronics |
STBC08PMR
STMicroelectronics
IC BATT CHG LI-ION 1CELL 6DFN
41400
| Single-cell Li-Ion linear charger; 4.2 V regulation option; up to 800 mA class depending on configuration; compact DFN package | Integrated thermal regulation and charge management functions | Portable consumer devices, accessories, compact rechargeable products | Functional match for single-cell Li-Ion charging with similar linear-charger architecture | Different package, pinout, and charge-status implementation; current must be configured below battery and thermal limits | Useful for redesigns prioritizing compact DFN packaging and broader sourcing |
The
LTC4081EDD#PBF
should be evaluated first because it stays within the same manufacturer ecosystem and is the listed substitute for the LTC4080XEDD#PBF. That does not automatically make it a drop-in replacement; the schematic connections, exposed-pad layout, charge-current programming network, and status pins still need review.
LTC4081EDD#PBF
Analog Devices Inc.
IC BATT CHG LI-ION 1CELL 10DFN
27338
The
LTC4054ES5-4.2#TRMPBF
and
LTC4054ES5-4.2#TRMPBF
Analog Devices Inc.
IC BATT CHG LI-ION 1CEL TSOT23-5
11876
MCP73831T-2ACI/OT
are simpler functional alternatives. They are often practical when the design only needs a standalone 4.2 V single-cell charger and can accept a new PCB layout. Their smaller packages reduce board area but also change thermal dissipation paths.
MCP73831T-2ACI/OT
Microchip Technology
IC BATT CNTL LI-ION 1CEL SOT23-5
29794
The
BQ24040DSQT
is a stronger candidate where additional charger management features are useful. It may offer better system supervision, but the design effort is higher because control pins, safety timing, and layout requirements differ from the LTC4080XEDD#PBF.
BQ24040DSQT
Texas Instruments
IC BATT CHG LI-ION 1CELL 10SON
7732
The
STBC08PMR
is suitable when a compact DFN-style charger is preferred and the application can accommodate its different pinout and configuration method. It should be treated as a redesign alternative rather than a direct LTC4080XEDD#PBF equivalent.
STBC08PMR
STMicroelectronics
IC BATT CHG LI-ION 1CELL 6DFN
41400
Engineering Trade-Offs When Comparing LTC4080XEDD#PBF Alternatives
| Evaluation Factor | LTC4081EDD#PBF | LTC4054ES5-4.2#TRMPBF | MCP73831T-2ACI/OT | BQ24040DSQT | STBC08PMR |
|---|---|---|---|---|---|
| Electrical compatibility | Closest candidate; same single-cell Li-Ion/Polymer charger class | Compatible battery voltage class, but circuit behavior differs | Similar 4.2 V single-cell charging profile | Compatible charging function with added control and monitoring features | Similar single-cell linear charging function |
| Mechanical compatibility | Most likely to align with the original DFN design, pending datasheet pinout check | Requires SOT-23-5 layout redesign | Requires SOT-23-5 layout redesign | Requires WSON layout redesign | Requires DFN layout redesign |
| Charge-current fit | Best candidate for maintaining the original 525 mA design target | Can support similar low-current charging if programmed correctly | Well suited to 500 mA-class charging | Higher current capability; must be limited for the original battery and thermal design | Higher current capability; must be configured for the original battery rating |
| Thermal behavior | Likely closest to original exposed-pad thermal strategy | Smaller package may need current derating | Small package may increase temperature rise at higher current | Better suited to managed designs but still layout-dependent | Compact DFN can dissipate heat well if PCB copper is designed properly |
| Battery regulation voltage | Intended for 4.2 V single-cell applications | 4.2 V fixed option available | 4.2 V option available | 4.2 V option available depending on ordering code | 4.2 V option available |
| Design-change effort | Low to moderate | Moderate to high | Moderate to high | High | Moderate to high |
| Reliability considerations | Same-vendor substitute simplifies documentation and qualification | Simple architecture reduces complexity, but package thermal limits must be checked | Mature, widely used charger family; verify charge accuracy and termination | More functions require more validation but can improve system monitoring | Good compact option if thermal layout is validated |
| Package availability | 10-DFN 3 mm x 3 mm style candidate | SOT-23-5 availability is generally broad | SOT-23-5 availability is generally broad | WSON package may suit dense designs but needs assembly review | Compact DFN package suits space-limited layouts |
| Cost considerations | May be higher than commodity charger ICs but lowers redesign risk | Often competitive for simple charging circuits | Often cost-effective and widely sourced | May cost more due to added features | Competitive where compact DFN charging is required |
| Best-fit scenario | Preferred LTC4080XEDD#PBF substitute evaluation | Simple redesign with minimal charger features | Cost-sensitive redesign using a common 500 mA-class charger | Feature-enhanced redesign with added status/safety behavior | Compact DFN redesign with higher current flexibility |
| Main limitation | Must confirm actual pin and function compatibility | Not a mechanical replacement | Not a mechanical replacement | More complex than the original function may require | Not a direct drop-in replacement |
For minimum redesign risk,
LTC4081EDD#PBF
is the leading replacement candidate for the Analog Devices Inc. LTC4080XEDD#PBF. For board redesigns,
LTC4081EDD#PBF
Analog Devices Inc.
IC BATT CHG LI-ION 1CELL 10DFN
27338
MCP73831T-2ACI/OT
and
MCP73831T-2ACI/OT
Microchip Technology
IC BATT CNTL LI-ION 1CEL SOT23-5
29794
LTC4054ES5-4.2#TRMPBF
are practical simple-charger alternatives, while
LTC4054ES5-4.2#TRMPBF
Analog Devices Inc.
IC BATT CHG LI-ION 1CEL TSOT23-5
11876
BQ24040DSQT
and
BQ24040DSQT
Texas Instruments
IC BATT CHG LI-ION 1CELL 10SON
7732
STBC08PMR
are better suited when additional charger features, higher current margin, or different package strategies are acceptable.
STBC08PMR
STMicroelectronics
IC BATT CHG LI-ION 1CELL 6DFN
41400
Before final substitution, verify the charger regulation voltage, charge-current programming resistor, termination behavior, status outputs, thermal pad connection, PCB copper area, and production package availability. For replacement part pricing and sourcing support, obtain quotations through IC-Components.com or email Info@IC-Components.com.
