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ST1CC40PUR bảng dữ liệu(PDF) 11 Page - STMicroelectronics

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Giải thích chi tiết về linh kiện  3 A monolithic step-down current source with synchronous rectification
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ST1CC40PUR bảng dữ liệu(HTML) 11 Page - STMicroelectronics

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DocID18279 Rev 5
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ST1CC40
Functional description
37
The error amplifier output is compared with the inductor current sense information to
perform PWM control.
5.5
Inhibit
The inhibit block disables most of the circuitry when the INH input signal is low. The current
drawn from the input voltage is 6 µA typical in inhibit mode.
5.6
Thermal shutdown
The shutdown block generates a signal that disables the power stage if the temperature of
the chip goes higher than a fixed internal threshold (150 ± 10 °C typical). The sensing
element of the chip is close to the PDMOS area, ensuring fast and accurate temperature
detection. A 15 °C typical hysteresis prevents the device from turning ON and OFF
continuously during the protection operation.
Table 5. Uncompensated error amplifier characteristics
Description
Value
Transconductance
250 µS
Low frequency gain
96 dB
CC
195 pF
RC
70 K



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