The LTC4100 is a single chip intelligent battery charger controller from Infineon that supports SMBus protocol and can communicate with the host. The LTC4100 supports a voltage range of 3.5V to 26V, and the charging current can reach 4A, with charging accuracy of up to ±0.8%.
The LTC4100 is a single‑chip smart battery charger controller that simplifies the design of SBS‑compliant charging systems. It supports SMBus communication, safety‑signal monitoring, and programmable voltage and current limits, making it suitable for portable instruments, computers, and battery‑backup servers.
The document details absolute maximum ratings, electrical characteristics, pin assignments, package dimensions, and typical performance curves, along with example application schematics and related part numbers.
| Output Voltage Range | 3.5 V to 26 V |
|---|---|
| Maximum Charging Current | 4 A |
| Dropout Voltage | 0.5 V |
| Maximum Duty Cycle | > 98 % |
| Voltage Accuracy | ±0.8 % |
| Current Accuracy | ±4 % |
| Package Type | 24‑Lead Plastic SSOP |
| Junction Temperature Range | -40 °C to 125 °C |
The LTC4100 can provide up to 4 A of charging current.
The DCIN pin operates from 6 V to 28 V.
The device is supplied in a 24‑lead plastic SSOP package.
The ACP pin outputs the value of the DCDIV comparator, which can be used to indicate whether AC is present.