S1F71100 Series
EXAMPLE OF EXTERNAL CONNECTION OF REFERENCE CIRCUIT
Example of Standard CircuitVDD
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CIN2 | CIN1 | POFFX | Overcurrent |
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| protection circuit | protection |
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| + | circuit | Load current |
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| – | detection resistor R | ||
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| Reference |
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| voltage circuit |
| ISENSE |
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| SSCAP |
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| SSCAP | Soft start | Oscillator |
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| Driver |
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| soft start | VO |
| Pch |
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| MOSTr |
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| PWM circuit |
| VO | |
| ERCAP | + |
| L | ||
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| SWO | 3.3V | |||
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| ERCAP | – |
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| Error amplifier |
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| phase |
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| VSS | D | CVOUT |
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| compen- |
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| sation |
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S1F71100 | Series |
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| Parts examples | |
CIN1 | 100μF | (Sanyo 16SA100M) |
CIN2 | 1μF |
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SSCAP | 0.1μF |
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ERCAP | 330pF |
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R | 100mΩ |
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PchTr | 47μH | (Hitachi 2SJ484) |
L | (Sumida CD105) | |
CVO | 47μF | (Sanyo 16SA47M) |
D | Schottkey | (Rohm |
*Characteristics vary with applicable conditions and parts. Select proper parts after sufficient evaluation.
S1F70000 Series Technical Manual
EPSON |