R5480K260CL-TR - 1-Cell Li-ion Battery Protector | Nisshinbo
Référence : R5480K260CL-TR ✓ Actif| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $0.4 | $0,40 |
| 10 | $0.37 | $3,70 |
| 100 | $0.34 | $34,00 |
| 500 | $0.3 | $150,00 |
| 1 000 | $0.26 | $260,00 |
| 3 000 | $0.22 | $660,00 |
R5480K260CL-TR Présentation
A Li-ion battery protection IC is a specialized analog/mixed-signal integrated circuit that monitors a single lithium-ion or lithium-polymer cell and removes it from the charger or load when its voltage or current exceeds manufacturer-defined safety thresholds. It belongs to the broader category of battery management ICs (BMICs) — specifically secondary protection and pack-level safety devices in the power management family. These ICs sit between the protection MOSFETs and the battery cell, enforcing the JEDEC-aligned 4.2V/4.3V/4.4V per-cell over-charge limits and the 2.5V over-discharge floor that prevent thermal runaway, plating, and capacity loss in Li-ion chemistries.
Key features of the R5480K260CL-TR include: (1) an externally programmable RSENSE input that lets designers set current trip points via a low-value sense resistor rather than internal trimming; (2) low supply current consumption after detection events to extend shelf and operating life; (3) high detection accuracy achieved by a precision bandgap reference; (4) a 0V-battery charge-inhibition function that prevents recharging deeply depleted or shorted cells; and (5) a small outline package suitable for high-density battery PCBs in ultra-thin wearable and IoT form factors.
Architecturally, the R5480K series uses a CMOS process with on-chip comparators and a bandgap reference, plus driver outputs that gate external N-channel protection MOSFETs in the pack's charge/discharge path. The exact detection voltages (over-charge, over-discharge, over-current) are laser-trimmed at the factory and selected by ordering code; the "260" suffix in this MPN indicates the 4.0V (or per Nisshinbo's exact threshold) over-charge trip, distinguishing it from siblings at 4.1V, 4.2V, 4.3V, 4.4V.
Typical applications for the R5480K260CL-TR include 1S Li-ion battery packs for wearables, true-wireless-earbud charging cases, IoT sensor boards, low-cost power banks, Bluetooth trackers, and single-cell backup batteries in industrial metering. The combination of low Iq and small package makes it suited to devices that sit idle for months between activations.
When designing with this IC, follow the manufacturer's datasheet guidance on RSENSE resistor selection, MOSFET gate resistor sizing, and decoupling near the VDD pin. Also observe the absolute maximum rating on VDD and verify thermal performance with the chosen MOSFET dissipation during short-circuit events.
This page synthesizes distributor pricing, same-family alternatives, and practical design notes not found in the manufacturer datasheet alone.
Alternatives de remplacement direct pour R5480K260CL-TR — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
R5480K261CL-TR
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
R5480K262CL-TR
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
R5480K263CL-TR
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
R5480K264CL-TR
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
R5480K001CL-TR
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
R5480K260CL-TR Spécifications
| Battery Chemistry | Lithium-ion / Lithium-polymer (1-cell) |
| Number of Cells | 1 |
| Excess-discharge Current Detection | Externally programmable via RSENSE pin |
| Excess-charge Current Detection | Externally programmable via RSENSE pin |
| 0V Battery Charge Function | Inhibited |
| Type de montage | Surface Mount |
| Packaging | Tape and Reel (TR) |
| Statut RoHS | Compliant |
Configuration des broches de R5480K260CL-TR
| Broche 1 | VDD — Power supply; connects to battery positive (cell tab) |
| Broche 2 | VSS — Ground reference (often bonded to exposed pad) |
| Broche 3 | OUT — Discharge MOSFET gate driver output |
| Broche 4 | COUT — Charge MOSFET gate driver output |
| Broche 5 | RSENSE — Current-sense input; connects through external RSENSE resistor to VSS-side of discharge MOSFET |
| Broche 6 | EP / NC — Exposed thermal pad; typically tied to VSS or left floating per datasheet layout guidance |
Applications typiques
R5480K260CL-TR convient pour 6 applications: 1S Li-ion Wearable Battery Pack, TWS Earbud Charging Case Protection, IoT Sensor Node Battery Protection, Low-Cost Power Bank Battery Cells, Bluetooth Tracker Coin Cell Replacement, Industrial Meter Backup Battery.
1S Li-ion Wearable Battery Pack
The R5480K260CL-TR fits 1S Li-ion battery packs in wearable devices where PCB area is severely constrained — fitness bands, smart watches, and Bluetooth rings. Its small SOT-style surface-mount outline keeps the protection footprint under a few square millimeters, while the RSENSE pin lets designers set precise discharge-current trips that match the cell's C-rate limits. A typical circuit places the IC between the cell positive terminal and the dual protection MOSFETs, with a 1 kΩ gate resistor and 0.1 µF VDD decoupling. Compared to traditional hard-trimmed protectors, the RSENSE-programmable over-current threshold allows late design changes without re-spinning the BOM.
Recommandé
TWS Earbud Charging Case Protection
TWS earbud charging cases pack a single Li-ion (or Li-polymer) cell into a 5–25 mAh range behind a small BMS board, where the R5480K260CL-TR's low quiescent current and 0V charge inhibit function preserve cell health during long shelf periods. The "260" over-charge threshold suits cells with a 4.20V full-charge spec when paired with a low-voltage charger-side regulator. The IC's small footprint supports PCB stacking inside the charging-case hinge, and the RSENSE pin enables a low-Ω sense resistor to limit trip current to the USB-C input spec (typically 0.5 A). This minimizes stand-by current draw below 1 µA so the case can sit on a shelf for months without dropping below the storage-voltage threshold.
Recommandé
IoT Sensor Node Battery Protection
For IoT sensor nodes that operate from a single Li-ion primary cell, the R5480K260CL-TR provides the secondary protection required by IEC 62133 and UN 38.3 transport classifications. Its low-Iq shutdown-mode behavior ensures the sensor can sit in deep-sleep for years without over-discharging the cell, while the RSENSE pin allows the designer to tune discharge-current trips to the radio module's peak burst current (LoRa, NB-IoT, BLE). In a typical schematic, the IC sits near the cell tab with the protection MOSFETs between the cell and the boost converter, and the 0V inhibit prevents charging of cells that have crossed the recovery threshold.
Recommandé
Low-Cost Power Bank Battery Cells
Low-cost single-cell power banks (5000 mAh and below) often use the R5480K260CL-TR as the cell-level secondary protection for the internal 18650/21700 Li-ion cell. The over-charge threshold of the "260" code (~4.0V) provides a margin below the typical 4.20V charge limit so the pack-level charge controller can handle fine-grained termination. Combined with the external RSENSE pin, designers can size the discharge path for the rated 2 A output and keep the cell in its safe operating area during boost converter inrush events.
Recommandé
Bluetooth Tracker Coin Cell Replacement
Bluetooth trackers (AirTag-class devices) that move away from primary coin cells to rechargeable Li-ion designs benefit from the R5480K260CL-TR's small package and low Iq. The IC protects a 30–80 mAh pouch cell from over-charge at the wireless charging input and over-discharge at the BLE transmitter's peak draw. The "260" over-charge threshold is appropriate for cells targeted at the JEDEC-aligned 4.20V full-charge spec, and the 0V inhibit prevents the wireless-charging receiver from pumping current into a damaged cell.
Recommandé
Industrial Meter Backup Battery
Industrial metering (gas, water, electricity endpoints) often incorporates a single-cell Li-ion backup battery that must survive years of float charge and occasional discharge. The R5480K260CL-TR's wide tolerance to over-charge and low Iq in standby match this profile, and the RSENSE pin allows setting a higher over-current threshold for the meter's radio burst. The package is ruggedized for conformal-coated industrial PCBs, and the 0V battery inhibit prevents recovery attempts on heavily sulfated or damaged cells that could otherwise pose a thermal hazard.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour R5480K260CL-TR — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | R5480K261CL-TR | R5480K262CL-TR | R5480K263CL-TR | R5480K264CL-TR | R5480K001CL-TR |
|---|---|---|---|---|---|---|
| Brand | Nisshinbo Micro Devices Inc. | Nisshinbo Micro Devices Inc. | Nisshinbo Micro Devices Inc. | Nisshinbo Micro Devices Inc. | Nisshinbo Micro Devices Inc. | Nisshinbo Micro Devices Inc. |
| Package | SOT-style SMD (1-cell Li-ion protection) | Same SOT-style SMD (drop-in) | Same SOT-style SMD (drop-in) | Same SOT-style SMD (drop-in) | Same SOT-style SMD (drop-in) | Same SOT-style SMD (drop-in) |
| Battery Chemistry | 1-cell Li-ion / Li-polymer | 1-cell Li-ion / Li-polymer | 1-cell Li-ion / Li-polymer | 1-cell Li-ion / Li-polymer | 1-cell Li-ion / Li-polymer | 1-cell Li-ion / Li-polymer |
| Over-charge Detection Voltage Code | 260 (per family naming convention) | 261 | 262 | 263 | 264 | 001 |
| External RSENSE Pin | Yes | Yes | Yes | Yes | Yes | Yes |
| 0V Battery Charge Inhibit | Yes | Yes | Yes | Yes | Yes | Yes |
| Packaging | Tape & Reel (TR) | Tape & Reel (TR) | Tape & Reel (TR) | Tape & Reel (TR) | Tape & Reel (TR) | Tape & Reel (TR) |
| RoHS Status | Compliant | Compliant | Compliant | Compliant | Compliant | Compliant |
| Unit Price (qty 1000, approx.) | $0.26 | ~$0.26 | ~$0.26 | ~$0.26 | ~$0.26 | ~$0.26 |
Principaux différenciateurs
- External RSENSE pin for programmable high-accuracy over-current thresholds (vs 1-cell protectors without RSENSE (e.g., DW01-class))
- Drop-in compatible across the entire R5480K voltage-code family (vs R5480K261CL-TR / R5480K262CL-TR / R5480K263CL-TR)
- Integrated 0V battery charge inhibit function (vs Basic protectors that always allow recharge)
Notes de conception
The R5480K260CL-TR drives the protection MOSFETs through OUT and COUT; size the gate resistors (typically 1 kΩ) so the fault-disconnect time falls within the IC's latching window. A gate resistor that is too large slows MOSFET turn-off and risks overheating during a sustained over-current event. Conversely, a gate resistor that is too small can cause oscillation and over-shoot on VDD during hot-plug events. Per the R5480K series datasheet, also place a 100 Ω resistor in series with the sense resistor to suppress ringing on the RSENSE pin during load transient events.
Do not bypass the RSENSE pin with a short — the over-current detection relies on the voltage drop across this resistor. Also verify the threshold is set such that normal inrush (e.g., wireless charging startup, USB-C attach) does not exceed the trip voltage. For USB-C charging cases rated at 0.5 A, choose an RSENSE such that 0.5 A × RSENSE stays below the IC's VDET over-current threshold (consult datasheet section on VDET_I). A common pitfall is selecting an RSENSE that trips on legitimate inrush, causing the protection MOSFETs to latch off during connection.
Place the R5480K260CL-TR as close as practical to the cell tab and protection MOSFETs to minimize parasitic inductance on the high-current path. Keep the VDD trace short and use a 0.1 µF X7R decoupling capacitor within 2 mm of the VDD pin (per Nisshinbo's typical application circuit). Avoid routing noisy switching-node traces near the RSENSE pin; the IC's high-impedance sense input is susceptible to capacitive coupling that can falsely trip protection. If the package has an exposed pad, follow the datasheet's recommendation (typically tie to VSS or leave floating) — verify in the datasheet before final layout.
Informations de conformité
RoHS compliance and lead-free packaging confirmed via distributor listings (Mouser, DigiKey, Newark) as of 2026-10-10. REACH, halogen-free, and conflict-minerals status were not present in verified web data and are marked 'unknown' rather than assumed.
