The use of synchronous rectification IC saves Schottky's voltage drop, making it more efficient;
Three large 47uF ceramic capacitors in a large package, longer life and lower ripple than tantalum or electrolytic capacitors;
It is used for boosting single-cell lithium battery to 5V to supply power to the device, doing mobile power supply, etc. The synchronous rectification efficiency is high, the highest efficiency is 95%, and the output current is much lower than the diode rectification heat. At present, the volume of the same type 5177 booster plate is the smallest.
On-board LED load lamp, no-load weak flash, the greater the load, the higher the brightness
With the EN enable terminal, after the R2 resistor on the module is removed, EN is the enable pin, the logic is active high (on boost) and low off (low power standby, current less than 1uA). The high level should not exceed 5V, and the low level should not be lower than -0.2V.
Input voltage: DC2.5-5V (Tips: Due to the design of the chip itself, the actual measurement often has 2.1V to work, so if you have to add a protective plate with the lithium battery, it will not be worth the loss.)
Output voltage: 5.1V+0.2V
Output electric current: 3A (maximum 3A when inputting 4.2V for heat dissipation, but 2.5A or less for long-term work, thick wire for wiring, it is recommended to use a line of not less than 1.5 square)
Conversion rate: typically 95% (related to input voltage)
Size: 14*22.5*4.2mm (length * width * height)
Output ripple: about 80MV
Note: the power supply input can not be reversed, the wrong is directly scrapped, the main chip is delicate and afraid of static electricity, the soldering iron should be reliably grounded when soldering, and because the module is small in size, but the current is large, so the thick wire must be used when wiring. , the thin electronic line is not up to!