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SC622AEVB датащи(PDF) 16 Page - Semtech Corporation

номер детали SC622AEVB
подробное описание детали  LED Light Management Unit Charge Pump, 400mA Flash LED, Dual LDOs, and I2C Interface
PDF  23 Pages
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производитель  SEMTECH [Semtech Corporation]
домашняя страница  http://www.semtech.com
Logo SEMTECH - Semtech Corporation

SC622AEVB датащи(HTML) 16 Page - Semtech Corporation

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SC622A
16
Charge Pump Output Current Limit
The device also limits the charge pump current at the
VOUT pin. When VOUT is shorted to ground, the typical
output current is 300mA. The current limiting is triggered
by an output under-voltage lockout below 2V. The output
returns to normal when the short is removed and VOUT is
above 2.5V. Above 2.5V, a typical current limit of 1A
applies.
LDO Current Limit
The device limits the output currents of LDO1 and LDO2 to
help prevent it from overheating and to protect the loads.
The minimum limit is 200mA, so load current greater than
the rated 100mA can be used with degraded accuracy
and larger dropout without tripping the current limit.
LED Float Detection
Float detect is a fault detection feature of the LED current
sink output. If the output is programmed to be enabled
and an open circuit fault occurs the current sink output,
the output will be disabled to prevent a sustained output
OVP condition from occurring due to the resulting open
loop.
Applications Information (continued)



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