SC622AEVB datasheet(16/23 Pages) SEMTECH

부품명	SC622AEVB

상세설명	LED Light Management Unit Charge Pump, 400mA Flash LED, Dual LDOs, and I2C Interface

PDF	23 Pages

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제조업체	SEMTECH [Semtech Corporation]

홈페이지	http://www.semtech.com

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16 / 23 page

SC622A

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)

SC622AEVB 데이터시트(PDF) 16 Page - Semtech Corporation