LT3650EMSE-4.1#PBF Analog Devices Integrated Circuit (Small Outline Packages) In Stock
The LT3650EMSE-4.1#PBF is a high-voltage monolithic Li-Ion battery charger from Analog Devices, delivering up to 2 A charge current with a fixed 4.1 V float voltage from input supplies up to 34 V. It integrates thermal regulation, bad-battery detection, and charge status outputs in a 12-pin MSOP package.
- Manufacturer
- Analog Devices
- Package
- Small Outline Packages
- Pin Count
- 12
- Lifecycle
- ACTIVE
- Datasheet
- LT3650EMSE-4.1#PBF Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $3.8800(MOQ 1)
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of LT3650EMSE-4.1#PBF?
- 2 A maximum charge current with resistor-programmable setting, eliminating external current-sense resistors in space-constrained charger designs
- Wide 4.95 V to 34 V input voltage range accepts automotive, solar panel, and wall-adapter inputs without an upstream regulator
- Fixed 4.1 V float voltage optimized for LiFePO4-compatible and slightly lower-voltage lithium chemistries extending cell cycle life
- Integrated thermal regulation automatically reduces charge current at high junction temperatures, protecting 12-pin MSOP package and battery
- C/10 charge termination detection and status pins simplify microcontroller-free standalone charger designs
What is LT3650EMSE-4.1#PBF used for?
The LT3650EMSE-4.1#PBF is designed for standalone single-cell Li-Ion battery chargers powered from high-voltage sources such as 12 V automotive rails, solar panels, or unregulated wall adapters up to 34 V, making it ideal for GPS trackers, fleet telematics modules, and portable field instruments. Its integrated thermal fold-back and programmable 2 A charge current also suit industrial handheld tools and medical monitoring devices where charging must continue safely across wide ambient temperature ranges without a supervisory microcontroller.
What are the specifications of LT3650EMSE-4.1#PBF?
| Pbfree Code | No |
| Manufacturer Package Code | 05-08-1666 |
| YTEOL | 8.5 |
| Adjustable Threshold | YES |
| Analog IC - Other Type | LINEAR BATTERY CHARGER |
| JESD-30 Code | R-PDSO-G12 |
| JESD-609 Code | e3 |
| Number of Channels | 1 |
| Number of Functions | 1 |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | TSSOP12,.19 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, HEAT SINK/SLUG, THIN PROFILE, SHRINK PITCH |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Supply Voltage-Max (Vsup) | 32V |
| Supply Voltage-Min (Vsup) | 4.75V |
| Supply Voltage-Nom (Vsup) | 20V |
| Surface Mount | YES |
| Technology | BIPOLAR |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | Matte Tin (Sn) - annealed |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.65mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.01 |
| Country of Origin | Malaysia |
Where can I find the LT3650EMSE-4.1#PBF datasheet?
LT3650EMSE-4.1#PBF Datasheet DownloadOfficial datasheet from Analog Devices
What are equivalent replacements for LT3650EMSE-4.1#PBF?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the maximum input voltage and charge current that the LT3650EMSE-4.1#PBF can handle?
The LT3650EMSE-4.1#PBF accepts input voltages up to 34 V and delivers a maximum charge current of 2 A, which is set by a single external resistor. This makes it directly compatible with 12 V automotive batteries, 24 V industrial rails, and solar panels without a pre-regulator stage.
Why does the LT3650EMSE-4.1#PBF use a 4.1 V float voltage instead of the more common 4.2 V?
The 4.1 V fixed float voltage reduces peak cell stress compared to the standard 4.2 V termination voltage, which can extend lithium-ion cell cycle life by 20% to 30% according to published battery aging studies. This makes the LT3650EMSE-4.1#PBF particularly suitable for applications where the battery is expected to endure more than 500 charge cycles, such as industrial handhelds and always-on IoT nodes.
How does thermal regulation in the LT3650EMSE-4.1#PBF protect the charger in high-ambient-temperature environments?
When the die temperature approaches 110°C, the LT3650EMSE-4.1#PBF's thermal loop automatically reduces the charge current below the resistor-programmed 2 A maximum to keep junction temperature within safe limits. This built-in fold-back means the charger continues operating at a derated current rather than shutting down, which is critical in enclosed devices like automotive dashcams or outdoor sensor nodes where ambient temperatures can reach 70°C or more.
Can the LT3650EMSE-4.1#PBF operate as a solar-powered battery charger without additional regulation?
Yes, the LT3650EMSE-4.1#PBF's 4.95 V to 34 V input range and input current-limiting behaviour make it well-suited to direct connection from a small 12 V to 20 V solar panel. The charger self-limits input current to match available panel power, and the 2 A peak charge rate fills a 2,000 mAh single-cell pack in approximately 1 hour under full irradiance, without requiring an MPPT controller in simple off-grid sensor applications.
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Why Buy from FindMyChip
About Analog Devices
Analog Devices (ADI) is a global leader in high-performance analog, mixed-signal, and digital signal processing integrated circuits used in virtually all types of electronic equipment.
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|---|---|---|
| 1+ | $9.4000 | $9.40 |
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