Aleksey_75 (07.12.2018 11:28, просмотров: 148) ответил misyachniy на Да странное решение.
"The EN pin is clamped by a 6.5-V Zener diode." Я правильно понял что всетаки стабилитрон унутри уже есть, или нет??? The TPS709 has the following functional modes:
1. Enabled: When the enable pin (EN) goes above 0.9 V, the device is enabled. EN is pulled high by a 300-nA
current source; therefore, EN can be left floating to enable the device. Do not connect EN to VIN. The EN pin
is clamped by a 6.5-V Zener diode. Do not exceed the 7-V absolute maximum rating on the enable pin or
excessive current flowing into the Zener clamp will destroy the device.
2. Disabled: When EN goes below 0.4 V, the device is disabled. During this time, OUT is high impedance and
the current into IN (I(SHUTDOWN)) is typically 150 nA.