MIC22205 Datasheet, PDF (3/29 Pages) Micrel Semiconductor – 2A, Integrated, Switch, High-Efficiency

Micrel, Inc.
MIC22205
Pin Description (Continued)
Pin Number
10
11
12
EP
Pin Name
PGND
NC
EN/DLY
GND
Description
Power Ground: Internal ground connection to the source of the internal N-Channel MOSFETs.
No Connect: Leave this pin open. Do not connect to ground or route other signal through this.
Enable/Delay (Input): This pin is internally fed with a 1µA current source from SVIN. A delayed
turn on is implemented by adding a capacitor to this pin. The delay is proportional to the
capacitor value. The internal circuits are held off until EN/DLY reaches the enable threshold of
1.24V. This pin is pulled low when the input voltage is lower than the UVLO threshold.
Exposed Pad (Power): Must be connected to the GND plane for full output power to be realized.
August 2011
3
M9999-082511-A