3.7V boost 5V circuit diagram summary 5V circuit diagram

3.7V boost 5V circuit diagram (1) LY1058? 300kHz switch type DC-DC boost converter. The input voltage is 2.6-5.5 V. Low holding voltage: 0.9V, start voltage 1.2V. • Fixed output voltage: 5V1500mA. External switch MOS tube. Package: SOT-23-5. LY9899? 300kHzpfm / PWM automatic switching 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. Main advantages: simple circuit, low cost; disadvantage: low conversion efficiency, low battery voltage utilization rate, small output power. These circuits are more suitable for use in a multi-purpose meter, replacing high-pressure laminated batteries. Be 3.7V boost 5V circuit diagram (2) NCP1400ASN50, NCP1402SN50, CS5171, TPS60110, TPS60111, MAX756, MAX777, MAX731, MAX770, above these models can be used. The price is relatively cheap in NCP1400ASN50 and NCP1402SN50, and the retail price is about 2 yuan. The input voltage range is 0.8V ~ 5V); the circuit form is relatively simple in TPS60110 and TPS 60111 (only 3 ~ 4 small capacitance, no need to switch diode and inductance, The input voltage range is 2.7V ~ 5.4V). Be 3.7V boost 5V circuit diagram (3) 3V, 3.3V.3.7V boost output 5V1A-0.5A, there are two scenarios to choose from: 1. Synchronous rectification boost PS7516, characteristics: efficiency is generally 90% and above, less peripheral Be 2, asynchronous boost chip PL2628, characteristics: the efficiency is about 80%, and the whole streams are needed. Be 3.7V boost 5V circuit diagram (4) 3V, 3.3V.3.7V boost output 5V2A / 2.4A, FP6276B ultra high efficiency synchronous rectifier boosting scheme. The actual application is 2.4a. Be 3.7V boost 5V circuit diagram (5) 0.8V low pressure start, boost fixed output 3.0V, 3.3V, 3.6V, 4.0V, 5V. Low start voltage: 0.8V (1mA) Output accuracy: better ± 2.5%? Supreme efficiency: 89%? Output current: greater than 300mA (VIN = 2.5V, Vout = 3.3V) low ripple, low noise only four Peripheral component Be 3.7V boost 5V circuit diagram (6) Be No inductance boost 5V200mA, only 3 capacitors in the periphery. Yes, 3 10uf patch capacitors can be. The simplest boost circuit. Anti-interference strong, can be used for radio products. 3.7V boost 5V circuit diagram (7)

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