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| LP3878-ADJ_15 Datasheet, PDF (12/25 Pages) Texas Instruments – Micropower 800-mA Low-Noise | |||
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LP3878-ADJ
SNVS311D â MAY 2005 â REVISED FEBRUARY 2015
www.ti.com
7.4 Device Functional Modes
7.4.1 Operation With VOUT(TARGET) + 2 V ⤠VIN ⤠16 V
The device operates if the input voltage is equal to, or exceeds VOUT(TARGET) + 2 V. At input voltages below the
minimum VIN requirement, the device does not operate correctly and output voltage may not reach target value.
7.4.2 Operation With SHUTDOWN Pin Control
LP3878-ADJ is turned off by pulling the SHUTDOWN pin low, and turned on by pulling it high. If this feature is
not used, the SHUTDOWN pin should be tied to VIN to keep the regulator output on at all times. To assure
proper operation, the signal source used to drive the SHUTDOWN input must be able to swing above and below
the specified turnon and turnoff voltage thresholds listed in the Electrical Characteristics under VL and VH.
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