With NCP1402ASN50, its input voltage range is 0.8V~5V, output voltage is 5V, and the maximum output current is 200mA. The price is only more than 2 yuan, plus the peripheral inductor, capacitor and fast recoveryCompound diodes cost less than 10 yuan.
IODO voltage regulator IC, model 11173V, 1-pin ground, 2-pin output, 3-pin input, output must be connected to at least 10 micronormal capacitance.
wumingye2003 diagram. Should be no problem, 7805 can certainly not, a load will immediately pull down the voltage. The 7805 input is generally 6-9V, too large and consumes too much power, and the pipe heats up.
The 5V power supply can output 60mA, and the maximum output current of the 12V power supply is 5mA. The circuit is shown in the figure above. It consists of AH805 booster module and FP106 booster module. AH805 is an input 2 ~ 3V, output 5V boost module, can output 100mA current at 3V power supply.
can work with USB power supply and adapter power supply. The thermal feedback automatically adjusts the charging current to limit the chip temperature in high-power operation or high ambient temperature conditions F. The charging voltage is fixed at 4V, while the charging current can be passed through a resistorPerform external Settings.
V liter 8V can be TI's TPS61040 (maximum output current 400mA) or TPS61041 (maximum output current 250mA), input voltage 8V~6V, output voltage minimum equal to the input voltage, maximum 28V, packaged as SOT-23 (5-pin).
Using mc34063 as the core design of the boost circuit to 12V to 24V. Input 12V voltage to the V of mc34063, plus the filter capacitor, and the input end composed of R6, R8 op-amp module. NPN tube as circuit>A rise in voltage? If you amplify the signal, you can use an op amp. If the power supply voltage rises, and there is no other incentive, you can try to use a charge pump, which is also a DC/DC conversion, with a dedicated booster chip, and does not use the principle of electromagnetic induction. Instead, the voltage is increased by capacitor charging and bootstrap.
With switching power supply or booster module, the higher the output power, the more expensive the price.
The appropriate DC booster module can be directly selected. Dc voltage refers to the voltage whose magnitude and direction do not change with time.
Can be boosted with LM2576 or MC34063, MC34063 PDF has this design, you can refer to.