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L99MD02 データシート(PDF) 7 Page - STMicroelectronics |
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L99MD02 データシート(HTML) 7 Page - STMicroelectronics |
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7 / 46 page  L99MD02 Overview Doc ID 16082 Rev 5 7/46 2 Overview 2.1 Power supply: VCC The supply voltage VCC (3.3 V / 5 V) supplies the whole device. In case of power-on (VCC increases from undervoltage to VPOR OFF = 2.75 V, typical) the circuit is initialized by an internally generated power-on reset (POR). If the voltage VCC decreases under the minimum threshold (VPOR ON = 2.55 V, typical), the outputs are switched off in 3-state (high impedance). The status registers are cleared and the control registers are reset to their default. Figure 2. Power on reset 2.2 Power supply: VSA, VSB Each VSA and VSB supplies the half bridges independently. VSA → Out 1 to Out 3 VSB → Out 4 to Out 6 2.3 Standby mode The standby mode of the L99MD02 is activated by EN pin to low. The inputs and outputs are switched off. The status registers are cleared and the control registers are reset to their default values. In the standby mode the current consumption is typically 5 µA. |
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