5 Pin Configuration and Functions

Figure 5-1 DDC Package,5-Pin SOT-23(Top View)

Figure 5-2 DRV Package,6-Pin WSON(Top View)

Table 5-1 Pin Functions

PIN			TYPE	DESCRIPTION
NAME	SOT-23	WSON	TYPE	DESCRIPTION
EN	3	4	I	Driving the enable pin (EN) high turns on the regulator. Driving this pin low puts the regulator into shutdown mode. EN can be connected to IN if not used.
FB	—	2	I	Adjustable version only; this pin is the input to the control loop error amplifier, and is used to set the output voltage of the device.
GND	2	3, Pad	—	Ground. The pad must be tied to GND.
IN	1	6	I	Input supply.
N/C	—	5	—	Not internally connected. This pin must either be left open or tied to GND.
NR	4	2	—	Fixed-voltage versions only; connecting an external capacitor to this pin bypasses noise generated by the internal band gap. This capacitor allows output noise to be reduced to very low levels.
OUT	5	1	O	Output of the regulator. A small capacitor (total typical capacitance ≥ 2 μF ceramic) is needed from this pin to ground to ensure stability.