Datasheet

Exposed Pad
Connect to GND
5 NC
6 FB
3 BOOT
1 SW
2 VIN
4 GND
7 EN
LM22678
SNVS585K –SEPTEMBER 2008–REVISED MARCH 2013 www.ti.com
Connection Diagram
Figure 1. 7-Lead PFM Package
See Package Number NDR0007A
PIN DESCRIPTIONS
Pin Name Description Application Information
1 SW Switch Pin Switching output of regulator.
2 VIN Input voltage Supply input to the regulator.
3 BOOT Boot-strap input Provides the gate voltage for the high side NFET
4 GND Ground input to regulator; system System ground pin.
common
5 NC Not Connected Pin is not electrically connected inside chip. Pin does function as thermal
conductor.
6 FB Feedback input Feedback input to regulator
7 EN Enable input Used to control regulator start-up and shutdown. See Precision Enable
section of data sheet.
EP EP Exposed Pad Connect to ground. Provides thermal connection to PCB. See applications
information.
These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam
during storage or handling to prevent electrostatic damage to the MOS gates.
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