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PM6675AS bảng dữ liệu(PDF) 29 Page - STMicroelectronics

tên linh kiện PM6675AS
Giải thích chi tiết về linh kiện  High efficiency step-down controller with embedded 2 A LDO regulator
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nhà sản xuất  STMICROELECTRONICS [STMicroelectronics]
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PM6675AS bảng dữ liệu(HTML) 29 Page - STMicroelectronics

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7.1.7
Switching section power-good signal
The SPG pin is an open drain output used to monitor output voltage through VSNS (in fixed
output voltage mode) or VSEL (in adjustable output voltage mode) pins and is enabled after
the soft-start timer has expired. The SPG signal is held low if the output voltage drops 10 %
below or rises 10 % above the nominal regulated value. The SPG output can sink current up
to 4 mA.
7.1.8
Switching section output discharge
Active soft-end of the output occurs when the SWEN (SWitching ENable) is forced low.
When the switching section is turned off, an internal 25
Ω resistor discharges the output
through the VSNS pin.
Figure 33.
Switching section soft-end
Figure 32.
Soft-start at heavy load (a) and short-circuit (b) condition,
pulse-skip enabled
(a)
(b)
SWEN
VOUT
Resistive Discharge



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