| Part Number | LTC4155IUFD#TRPBF | LTC4156IUFD#TRPBF | 
|---|---|---|
| Manufacturer | Analog Devices Inc. | Analog Devices Inc. | 
| Category | PMIC - Battery Chargers | PMIC - Battery Chargers | 
|   |   | |
| Product Status | Active | Active | 
| Battery Chemistry | Lithium Ion/Polymer | Lithium Iron Phosphate | 
| Number of Cells | 1 | 1 | 
| Current - Charging | Constant - Programmable | Constant - Programmable | 
| Programmable Features | - | - | 
| Fault Protection | Over Voltage | Over Voltage | 
| Charge Current - Max | 3.7A | 3.7A | 
| Battery Pack Voltage | 4.2V | 3.8V | 
| Voltage - Supply (Max) | 5.5V | 5.5V | 
| Interface | I²C, USB | I²C, USB | 
| Operating Temperature | -40°C ~ 125°C (TJ) | -40°C ~ 125°C (TJ) | 
| Mounting Type | Surface Mount | Surface Mount | 
| Package / Case | 28-WFQFN Exposed Pad | 28-WFQFN Exposed Pad | 
| Supplier Device Package | 28-QFN (4x5) | 28-QFN (4x5) |