If you are looking for a specific for a particular device repair, would you like help: Finding a datasheet ? Interpreting a pinout diagram ? Identifying a replacement component ?
Typically a capacitor and resistor in series connected between the COMP pin and Ground to prevent oscillation.
All buck controllers report back that their voltages are stable. lac503p schematic
If you are reverse-engineering or repairing a board with this chip, the schematic usually follows a standard topology:
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| Specification | Typical Value(s) | | ---------------------- | -------------------------------------------------------- | | | 100-240V AC, 50-60Hz (Worldwide compatible) | | Output Voltage | Dual output: 5V DC and 12V DC | | Output Current | Common: 2A (for each rail), seen in adapters like the one for LaCie's P3 & P5 products. Higher power units for larger drives may have a 5V/4.2A, 12V/3A rating (57W total). | | Form Factor | External "Power Brick" | | Connector Type | The output connector is a single plug. This single plug carries both the 5V and 12V DC outputs on different pins. |
To help you decide your next step, use this quick diagnostic table: If you are looking for a specific for
Supplies power to internal processor interfaces, high-speed buses, and internal phase-locked loops (PLLs).
Triggering the power button tells the Embedded Controller to issue control signals (such as SUSP# or EC_ON ). This action unlocks the switched power rails required to drive the high-performance logic sectors: Typically a capacitor and resistor in series connected
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