1. Method/Step 1B628 (PL2628) Output voltage Setting: VOUT=0.6× (1 R1/R2). The output voltage can be changed by changing the R1 and R2 resistors of the third pin of the IC. R1 is: resistance connected to the output end; R2: It's the resistance to the ground.
2, FSB628 (B6288Y) is a large number of applications in mobile power supplies and other lithiumWhat chip is good for 4.5V output? '> What chip is good for boosting the voltage from 3.7V lithium battery to 4.5V output?
1, to increase the DC voltage, you need to use a switching circuit to turn DC into high-frequency AC, and use a high-frequency transformer to boost and recirculate DC. Or as I said above, buy a DC voltage converter.
2, this I do, can not charge for the mobile phone interference, voltage and current can meet, 34063 circuit I also do a small current charging slow maximum 500 ma.
3. The self-made circuit diagram is shown in the figure. If electricityPressure error, can be fine-tuned R3 and R4 ratio.
4, the highest efficiency is DCDC. STM32F series belongs to the low-end 32-bit ARM microcontroller, the series chip is produced by ST company, its core is Cortex-M3.
5, with TI (Texas Instruments) boost charge pump device TPS60110 is the best, its peripheral components only need four small capacitors (2μF two, 15μF one, 33μF one., the voltage can be 10V).
6, low efficiency, why fallPressure and then pressure? 7V lithium boost voltage 5V can be. Other effects should be minor. It seems that you want to use a lithium battery to output 3V and 5V at the same time, which is OK, no impact, just consider the battery power supply capacity.
FSB628 (B6288Y) is a chip that is widely used in lithium battery booster 5V1A products such as mobile power supplies. Next look at the selection of B628 (B6288Y) boost IC electricitySense, capacitance and output voltage Settings. Screen printing of B6288Y: B628.
V to 12V 1A booster chip: SX1318 is a wide voltage output, DC-DC converter.
B628 (PL2628) is a chip that is widely used in lithium battery booster 5V1A products such as mobile power supplies. Tools/Materials B628 resistor, capacitor, inductor, Schottky diode. Method/Procedure 1B628 (PL2628) Output voltage Setting: VOUT=0.6 x (1 R1/R2).