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L6982 Folha de dados(PDF) 24 Page - STMicroelectronics

Nome de Peças L6982
Descrição Electrónicos  38 V, 2 A synchronous step-down converter with low quiescent current
PDF  48 Pages
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Fabricante Electrônico  STMICROELECTRONICS [STMicroelectronics]
Página de início  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L6982 Folha de dados(HTML) 24 Page - STMicroelectronics

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8
Application notes
8.1
Programmable power up threshold
The Enable rising threshold is equal to 1.2 V typical (refer to Table 6). The power up threshold is adjusted
accordingly with the following equation: VPower Up=1.2∙ 1+REN HREN L
(24)
Figure 26. Leading network example
(*) Synchronization is allowed only for LNM versions.
The Enable falling threshold is equal to 1.0 V typical (refer to Electrical characteristics table). The turn off
threshold is obtained accordingly with the following equation:
VPower Down=1.0∙ 1+REN HREN L
(25)
8.2
External synchronization (only available for Low Noise Mode)
The device allows a direct connection between a clock source and the EN/CLKIN pin.
Figure 27. External synchronization. Direct connection
L6982
Application notes
DS13683 - Rev 1
page 24/48



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