LTC6655
Pin Functions
SHDN (Pin 1): Shutdown Input. This active low input
powers down the device to <20µA. If left open, an inter-
nal pull-up resistor puts the part in normal operation. It
is recommended to tie this pin high externally for best
performance during normal operation.
VIN (Pin 2): Power Supply. Bypass VIN with a 0.1µF, or
larger, capacitor to GND.
GND (Pin 4): Device Ground. This pin is the main ground
and must be connected to a noise-free ground plane.
VOUT_S (Pin 6): VOUT Sense Pin. Connect this pin at the
load and route with a wide metal trace to minimize load
regulation errors. This pin sinks 2mA. Output error is
RTRACE • 2mA, regardless of load current. For load currents
<100µA, tie directly to VOUT_F pin.
VOUT_F (Pin 7): VOUT Force Pin. This pin sources and
sinks current to the load. An output capacitor of 2.7µF to
100µF is required.
GND (Pins 3, 5, 8): Internal Function. Ground these
pins.
BLOCK DIAGRAM
2 VIN
SHDN
1
GND
4
GND
3,5,8
+
BANDGAP
–
VOUT_F
7
VOUT_S
6
6655 BD
6655fa