UCC3957M-1 Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
The UCC3957M-1 is a lithium-ion battery protector IC from Texas Instruments supporting selectable 3 or 4-cell operation with integrated overcurrent protection in a 16-pin SSOP package. It monitors up to 4 Li-Ion cells for overvoltage, undervoltage, and overcurrent conditions to safeguard battery packs. Available from stock with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 16
- Lifecycle
- OBSOLETE
- Datasheet
- UCC3957M-1 Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -20.0°C to 70.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Selectable 3 or 4-cell Li-Ion battery protection with fixed overvoltage and undervoltage thresholds, eliminating external threshold-setting components
- Integrated overcurrent protection circuit detects short-circuit and overcurrent events, disconnecting the battery pack to prevent cell damage and fire hazards
- 4-channel cell monitoring in a compact 16-pin SSOP package, enabling multi-cell Li-Ion pack protection in space-constrained battery management designs
- Fixed threshold architecture (non-adjustable) ensures consistent protection levels across production units without calibration or external resistor networks
Applications
The UCC3957M-1 is designed for protecting multi-cell lithium-ion battery packs used in laptops, power tools, medical devices, and industrial handheld equipment where 3 or 4 series-connected Li-Ion cells require overvoltage, undervoltage, and overcurrent protection. It is also used in rechargeable battery pack designs for portable consumer electronics and electric vehicles requiring compact, cost-effective cell-level safety circuitry. The device integrates seamlessly with external FET switches to form a complete battery protection solution.
Specifications
| Pbfree Code | No |
| YTEOL | 0 |
| Additional Feature | SELECTABLE THREE OR FOUR CELL OPERATION, OVERCURRENT PROTECTION |
| Adjustable Threshold | NO |
| Analog IC - Other Type | BATTERY PROTECTOR |
| JESD-30 Code | R-PDSO-G16 |
| JESD-609 Code | e4 |
| Number of Channels | 4 |
| Number of Functions | 1 |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SSOP16,.25 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, SHRINK PITCH |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Supply Current-Max (Isup) | 0.04mA |
| Supply Voltage-Max (Vsup) | 20V |
| Supply Voltage-Min (Vsup) | 6.5V |
| Supply Voltage-Nom (Vsup) | 16V |
| Surface Mount | YES |
| Technology | BICMOS |
| Temperature Grade | OTHER |
| Terminal Finish | Nickel/Palladium/Gold (Ni/Pd/Au) |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.635mm |
| 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 2 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.60 |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for UCC3957M-1:
Texas Instruments Fixed, 4 Channel, BICMOS, PDSO16
Texas Instruments Fixed, 4 Channel, BICMOS, PDSO16
Frequently Asked Questions
What protection functions does the UCC3957M-1 provide for Li-Ion battery packs?
The UCC3957M-1 provides overvoltage protection (prevents cell overcharge), undervoltage protection (prevents deep discharge), and overcurrent protection (disconnects the pack on short-circuit or excessive load current). These three functions together protect Li-Ion cells from the most common failure modes that can lead to degradation, thermal runaway, or fire.
Does the UCC3957M-1 support 3-cell or 4-cell battery configurations?
Yes, the UCC3957M-1 supports selectable 3-cell or 4-cell Li-Ion configurations. A configuration pin allows the designer to choose between the two options, making the device flexible for different battery pack designs without requiring separate ICs for 3S and 4S packs.
Are the protection thresholds in the UCC3957M-1 adjustable?
No, the UCC3957M-1 has fixed (non-adjustable) protection thresholds. While this means the designer cannot fine-tune the trip points, fixed thresholds ensure consistent protection across all units without the need for external calibration resistors or individual unit programming, simplifying manufacturing.
What package does the UCC3957M-1 use and what are its physical characteristics?
The UCC3957M-1 is housed in a 16-pin SSOP (Shrink Small Outline Package) with a plastic/epoxy body (JESD-30 code R-PDSO-G16). The SSOP package is smaller than standard SOIC, making it suitable for compact battery pack PCBs. Note: This device is not Pb-free (JESD-609 e4 indicates standard solder).
What are typical applications for the UCC3957M-1?
Typical applications include multi-cell Li-Ion battery protection in laptop battery packs, power tool batteries, medical portable devices, industrial handheld instruments, and any rechargeable battery pack design using 3 or 4 series-connected Li-Ion cells that requires integrated cell-level overvoltage, undervoltage, and overcurrent safety protection.
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About Texas Instruments
Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
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