A summary of the portfolio positioning is shown in the table. Shaded areas show where the LTC4070 has performance differences compared to Analog Devices' other related battery chargers and shunt references. In most cases, these are performance advantages for the LTC4070. The LTC4070 most resembles a cross between a low-current but high-charge accuracy linear battery charger like the LTC4065L and a shunt reference such as the LT1389. By comparison, the LTC4065L charges a 1 cell Li-Ion battery at 4.2V only, has higher charge current, but no NTC or load disconnect capability, and is not battery stack compatible. Also, it cannot charge from low current intermittent or continuous input sources due to its 120µA operating current. In this case, the operating current exceeds the output current capability of the source. By further comparison, the LT1389 can be set for 4.096V float voltage but has high operating current, lacks battery charger functionality such as NTC and status signaling of the LTC4070, plus is housed in a large SOIC package.