L6920DB Просмотр технического описания (PDF) - STMicroelectronics

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производитель

L6920DB

Synchronous rectifier step up converter

STMicroelectronics 

Detailed description

L6920DB

So, in case of light load, the device works in PFM mode, as shown in Figure 8:

Figure 6. PFM mode condition: Vout = 5V; Vbatt =1.5V ; C2 = Vout ; C3 = Inductor

Current

Figure 7 shows how the device works in case of heavy load.

Figure 7. Heavy load conditions C2 = Vout; C3 = Inductor Current; Vout = 5V;

Vbatt=1.5V

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