3.7v boost 5v circuit diagram (seven 3.7v boost 5v circuit diagram detailed)
LY1058»300KHz Switching DC-DC Boost Converter. »Input voltage 2.6-5.5V. » Low holding voltage: 0.9V, starting voltage 1.2V. » Fixed output voltage: 5V1500mA. »External switch MOS tube. »Package: SOT-23-5. LY9899»300KHzPFM/PWM automatic transfer switch type DC-DC boost converter. »Low voltage start: 0.8V start, input voltage 0.8-6.5V. »Output voltage range: 1.5V~20V; adjustable output. »Output current: 300mA~2000mA. »External switch MOS tube. »Package: SOT-23-5. The following is a simple DC boost circuit, the main advantages: simple circuit, low cost; disadvantages: low conversion efficiency, low battery voltage utilization, and low output power. These circuits are more suitable for use in multi-purpose meters instead of high-voltage laminate batteries.
NCP1400ASN50, NCP1402SN50, CS5171, TPS60110, TPS60111, MAX756, MAX777, MAX731, MAX770, all of these models are available. The price is relatively cheap with NCP1400ASN50 and NCP1402SN50, the retail price is about 2 yuan, the input voltage range is 0.8V~5V); the circuit form is relatively simple with TPS60110 and TPS60111 (only 3~4 small capacitors are needed, no switching diodes and inductors are needed, The input voltage range is 2.7V~5.4V).
3V, 3.3V.3.7V boost output 5V1A-0.5A, there are two options to choose from:
1, synchronous rectification boost PS7516, features: efficiency is generally 90% and above, less peripheral
2, asynchronous boost chip PL2628, features: efficiency is generally about 80%, need to rectify Schottky diode.
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