微源芯片 LP6454 18V4A同步降压转化器
General Description
The LP6454 is a high efficiency synchronous buck converter supporting up to 4A output current and low heat.
The LP6454 employs an adaptive constant-on-time (COT) control scheme to achieve fast load transient response and without external compensation. The external components are minimized, requiring only one inductor, two resistors, and two capacitors.
The LP6454 supports both aluminum polymer capacitors and ceramic capacitors without extra compensation components.
The LP6454 integrates PFM (Pulse Frequency Modulation) operation, which helps maintain the system efficiency at light load. The LP6454 also integrates multiple protection functions, i.e., over-current protection (OCP), overtemperature protection (OTP), under-voltage lockout (UVLO), and short circuit protection (SCP).
The LP6454 is available in a small 6-pin 1.6mmΧ2.9mm SOT23-6 package.
Applications
⚫ Industrial PC
⚫ Network/digital video recorder (NVR/DVR)
⚫ TV and TV box
⚫ 12V Industrial bus applications
