LP2178 - Non-Isolated Buck Switching Power Supply Constant Voltage Control Driver
Datasheet Summary
Description
Figure 2 Pin package diagram
serial number
1ÿ3
2 4
5ÿ6ÿ7ÿ8
Pin Name VCC GND NC
C
describe Chip power supply and feedback signal detection Chip Ground
Floating pin
The collector C of the built-in power transistor
Limit parameters (Note 1)
symbol
parameter
Parameter Range Unit
VCC power suppl
Features
LP2178 is a high-efficiency and high-precision non-isolated step-down switching power supply constant voltage control driver chip. It is suitable for non-isolated Buck and Buckboost topologies with a full range of input voltages from 85VAC to 265VAC, and is especially suitable for driving power supplies such as small appliances and white appliances. LP2178 integrates high-voltage power tubes and adopts constant voltage control mode. The system can work in CCM and DCM modes. It adopts a unique P.
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LP2178
Non-isolated step-down switching power supply constant voltage control driver
Overview
Features
LP2178 is a high-efficiency and high-precision non-isolated step-down switching power supply constant voltage control driver chip. It is suitable for non-isolated Buck and Buckboost topologies with a full range of input voltages from 85VAC to 265VAC, and is especially suitable for driving power supplies such as small appliances and white appliances.
LP2178 integrates high-voltage power tubes and adopts constant voltage control mode. The system can work in CCM and DCM modes. It adopts a unique PFM control method to improve audio characteristics.
LP2178 Datasheet
