This post explains for the IPD.
The Part Number is MIP2K2.
The function of this semiconductor is High-Performance IPD.
The package is 8 Pin Type
Preview images :
This is High-Performance IPD with Frequency Jitter for Small Charger / Adapter.
The MIP2K2 series is a high-performance IPD designed for 15W battery chargers and featuring built-in frequency jitter function at PWM control. It features built-in protection circuits necessary for compact
power source charger circuitry. This allows a significant reduction in externally connected parts. It provides PWM control when a normal load is applied and intermittent control with low load. This results in greater efficiency for very low to maximum loads, while also conserving power during standby.
1. Built-in jitter function
2. Built-in charge protection circuit
3. Built-in overcurrent, overheating, load shorting and overvoltage protection circuits
1. Chargers (for DSC, etc.), AC adapter
Other data sheets are available within the file: MIP2K3, MIP2K4, MIP2K5