MAX4995AF 查看數據表（PDF） - Maxim Integrated
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MAX4995AF Datasheet PDF : 13 Pages
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50mA to 600mA Programmable
Current-Limit Switches
tBLANK
tRETRY
tBLANK
tRETRY
tBLANK
tBLANK
OUT
CURRENT LIMIT
LOAD CURRENT
THE DEVICE GOES TO
THERMAL-SHUTDOWN MODE
FLAG
Figure 2. Autoretry Fault Diagram
OUT
CURRENT LIMIT
LOAD CURRENT
THE DEVICE GOES TO
THERMAL-SHUTDOWN MODE
FLAG
tBLANK
tBLANK
Figure 3. Latchoff Fault Diagram
FLAG Indicator
FLAG is an open-drain fault indicator output and requires
an external pullup resistor to a DC supply. FLAG goes
low when any of the following conditions occurs:
• The device is in current-limit mode.
• The OUT voltage is above the IN voltage by more
than 110mV (typ).
• The die temperature exceeds the thermal-shutdown
temperature limit of +150°C.
• SETI is connected to ground.
Thermal Shutdown
Thermal-shutdown circuitry protects the devices from
overheating. The switch turns off and FLAG goes low
immediately when the junction temperature exceeds
+150°C (typ). The switch turns on again after the device
temperature drops by approximately 15°C (typ).
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