Package Information
| CAD Model: | View CAD Model |
| Pkg. Type: | uTDFN |
| Pkg. Code: | LWI |
| Lead Count (#): | 8 |
| Pkg. Dimensions (mm): | 1.98 x 1.98 x 0.00 |
| Pitch (mm): | 0.5 |
Environmental & Export Classifications
| RoHS (ISL9211BIRU58XZ-T) | Download |
| Moisture Sensitivity Level (MSL) | 1 |
| Pb (Lead) Free | Yes |
| ECCN (US) | |
| HTS (US) |
Product Attributes
| Pkg. Type | uTDFN |
| Carrier Type | Reel |
| MOQ | 3000 |
| Battery Leakage Current (Max) | 20nA max @ 4.34VVB |
| Battery Overvoltage Protection (Typical) | 4.34 V |
| Battery Overvoltage Protection (V) | 4.34 - 4.34 |
| Input Overvoltage Protection (Typical) (V) | 5.8 |
| Input Overvoltage Protection (V) | 5.8 |
| Input Overvoltage Protection Range (V) | 5.6 - 6 |
| Lead Count (#) | 8 |
| Length (mm) | 2 |
| Moisture Sensitivity Level (MSL) | 1 |
| Pb (Lead) Free | Yes |
| Pb Free Category | Nickel/Palladium/Gold-Silver - e4 |
| Pitch (mm) | 0.5 |
| Pkg. Dimensions (mm) | 2.0 x 2.0 x 0.00 |
| Programmable Overcurrent (Max) | 2 |
| Programmable Overcurrent Range (A) | 2 |
| Qualification Level | Standard |
| Ron @ 500mA | 170 typ, 280 max |
| Ron @ 500mA (Max) (mohms) | 280 |
| Ron @ 500mA (Typical) (mohms) | 170 |
| Temp. Range (°C) | -40 to +85°C |
| Width (mm) | 2 |
Resources for ISL9211B
Description
The ISL9211B is an integrated circuit (IC) optimized to provide a redundant safety protection to a Li-ion battery charging system. The IC monitors input voltage, battery voltage, and charge current. When any of these parameters exceeds its limit, the IC turns off an internal N-channel MOSFET to remove power from the charging system to the battery. The IC also monitors its own internal temperature and turns off the N-channel MOSFET when the temperature exceeds +150°C. Together with the battery charger IC and the protection module in a battery pack, the charging system using the ISL9211B has triple-level protection and is two-fault tolerant. The IC is designed to turn on the internal NFET slowly, to avoid in-rush current at power-up. It turns off the NFET quickly when the input is overvoltage, to remove power before damage occurs. The ISL9211B has a logic flag output to indicate a fault condition. The enable input allows the system to cut off the input power, if needed.