The LTC4009 family of high power battery chargers achieve a small circuit size and high performance, while supporting multiple chemistry types and up to 3A 50W fast charging.
This document describes the LTC4009, LTC4009-1, and LTC4009-2 family of high-performance battery charger integrated circuits. These devices are designed to deliver up to 3A with output power levels approaching 50W using a space-efficient 20-lead 4mm x 4mm QFN package.
| Maximum Charge Current | 3A (LTC4009, LTC4009-1, LTC4009-2) |
|---|---|
| Output Power Level | Approaching 50W |
| Package Type | 20-lead 4mm x 4mm QFN |
| Nominal PWM Frequency | 550kHz |
| Output Voltage Accuracy (Room Temp) | +0.5% |
The LTC4009, LTC4009-1, and LTC4009-2 models can deliver a maximum charge current of 3A.
The family operates in a space-efficient 20-lead 4mm x 4mm QFN package.
Output voltages are selected by strapping two pins to either ground or the output of an onboard 5V regulator.