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TC1219 データシート(PDF) 4 Page - Microchip Technology |
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TC1219 データシート(HTML) 4 Page - Microchip Technology |
4 / 16 page TC1219/TC1220 DS21366B-page 4 2002 Microchip Technology Inc. 3.0 DETAILED DESCRIPTION The TC1219/TC1220 charge pump converters invert the voltage applied to the VIN pin. Conversion consists of a two-phase operation (Figure 3-1). During the first phase, switches S2 and S4 are opened and S1 and S3 are closed. During this time, C1 charges to the voltage on VIN and load current is supplied from C2. During the second phase, S2 and S4 are closed, and S1 and S3 are opened. This action connects C1 across C2, restoring charge to C2. FIGURE 3-1: IDEAL SWITCHED CAPACITOR CHARGE PUMP VOUT = – (VIN) C1 C2 TC1219/1220 Phase 1 VIN S1 S3 S4 S2 OSC |
同様の部品番号 - TC1219 |
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同様の説明 - TC1219 |
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