| Part Number | LT3651IUHE-4.1#PBF | LT3651IUHE-4.2#PBF | 
|---|---|---|
| Manufacturer | Analog Devices Inc. | Analog Devices Inc. | 
| Category | PMIC - Battery Chargers | PMIC - Battery Chargers | 
|   |   | |
| Product Status | Active | Active | 
| Battery Chemistry | Lithium Ion/Polymer | Lithium Ion/Polymer | 
| Number of Cells | 1 | 1 | 
| Current - Charging | Constant - Programmable | Constant - Programmable | 
| Programmable Features | Current, Timer | Current, Timer | 
| Fault Protection | Over Temperature | Over Temperature | 
| Charge Current - Max | 4A | 4A | 
| Battery Pack Voltage | 4.1V | 4.2V | 
| Voltage - Supply (Max) | 32V | 32V | 
| Interface | - | - | 
| Operating Temperature | -40°C ~ 125°C (TJ) | -40°C ~ 125°C (TJ) | 
| Mounting Type | Surface Mount | Surface Mount | 
| Package / Case | 36-WFQFN Exposed Pad | 36-WFQFN Exposed Pad | 
| Supplier Device Package | 36-QFN (5x6) | 36-QFN (5x6) |