LTC4557 Linear Technology, LTC4557 Datasheet - Page 10

• Manufacturer Part Number: LTC4557
• Description: Dual SIM/Smart Card Power Supply and Interface
• Manufacturer: Linear Technology

APPLICATIO S I FOR ATIO
LTC4557
Shutdown Modes
The LTC4557 can enter a low current shutdown mode by
one of two methods. First, the ENABLE pin can be brought
LOW by the controller to directly shut down the part. The
other way is to lower DV
power-on-reset circuit automatically puts the part into
shutdown mode.
10
U
CC
U
below 1.2V, at which point the
W
U
Ultralow Shutdown Current
In either of the two shutdown modes, the shutdown
current is less than 1 A. For applications that require
virtually zero shutdown current, the DV
grounded. This will reduce the V
a single microampere.
BATT
current to well under
CC
pin can be
4557f