This article will introduce the features and applications of the H5628L withstand voltage 100V step-down constant current chip, including its step-down capability of 80V to 12V and 9V, as well as support for up to 25A of current. In addition, the article will explain the advantages of the chip in terms of circuit protection and thermal performance.
The H5628L is a non-isolated constant current LED driver IC with simple peripheral circuits and VFPWM continuous operation mode.
The typical switching frequency of the H5628L is fixed at 130kHz, and due to the fixed PWM operation mode, a smaller inductance can be used in the application, which can effectively save the space of the whole machine.
The H5628L can switch between two functions by controlling the MODE port, MODE is high brightness mode, and MODE is connected to high level to low light mode with 50% load current.
The H5628L is packaged in ESOP-8, and the heat sink at the lower part of the chip is connected to the drain pin, which can effectively dissipate heat from the chip.
Product Features: l Wide voltage 8V-90V input range.
l Typical 130kHz switching frequency.
l High efficiency: up to 95%.
l The output current can be as high as 25a (the allowance should be left on the glass fiber board).
l Built-in intelligent temperature protection, high temperature current drop.
l Built-in 100V low internal resistance MOS
l Built-in 55V regulator tube.
l Average current working mode.
l Integrated output short-circuit protection function.
Typical Applications. l DC or AC input LED driver.
l RGB backlight LED driver.
l Electric bicycle lighting.
l High power LED lighting.
l Automobile lighting, etc.