ZHCS539O September 2008 – November 2014 LM22673 , LM22673-Q1
PRODUCTION DATA.
5 Pin Configuration and Functions
8-Pin
HSOP
Top View
7-Pin
PFM
Top View
Pin Functions
| PIN | TYPE | DESCRIPTION | APPLICATION INFORMATION | ||
|---|---|---|---|---|---|
| NAME | SO PowerPAD |
PFM | |||
| BOOT | 1 | 3 | I | Bootstrap input | Provides the gate voltage for the high side NFET. |
| NC | 2 | — | — | Not Connected | Pin is not electrically connected inside the chip. Pin does function as thermal conductor. |
| IADJ | 3 | 5 | I | Current limit adjust input pin | A resistor attached between this pin and GND can be used to set the current limit threshold. Pin can be left floating and internal setting will be default. |
| FB | 4 | 6 | I | Feedback input | Feedback input to regulator. |
| SS | 5 | 7 | Soft-Start pin | Used to increase soft-start time. See Soft-Start section of data sheet. | |
| GND | 6 | 4 | — | Ground input to regulator; system common | System ground pin. |
| VIN | 7 | 2 | I | Input voltage | Supply input to the regulator. |
| SW | 8 | 1 | O | Switch output | Switching output of regulator. |
| EP | EP | EP | — | Exposed Pad | Connect to ground. Provides thermal connection to PCB. See Thermal Considerations. |