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| Part Number | LTC1730ES8-4.2#PBF | LTC1731ES8-4.2#PBF | 
|---|---|---|
| Manufacturer | Analog Devices Inc. | Analog Devices Inc. | 
| Product Status | Active | Active | 
| Battery Chemistry | Lithium Ion | Multi-Chemistry | 
| Number of Cells | 1 | 1 | 
| Current - Charging | Constant, Pulsed | Constant - Programmable | 
| Programmable Features | Timer | Timer | 
| Fault Protection | Over Current | - | 
| Charge Current - Max | 1A | 500mA | 
| Battery Pack Voltage | 4.2V | 4.2V | 
| Voltage - Supply (Max) | 12V | 12V | 
| Interface | - | - | 
| Operating Temperature | -40°C ~ 85°C (TJ) | -40°C ~ 85°C (TA) | 
| Mounting Type | Surface Mount | Surface Mount | 
| Package / Case | 8-SOIC (0.154", 3.90mm Width) | 8-SOIC (0.154", 3.90mm Width) | 
| Supplier Device Package | 8-SO | 8-SO |