MC33997 Datasheet, PDF (4/20 Pages) Motorola, Inc – Switching Power Supply with Linear Regulators

Freescale Semiconductor, Inc.
PIN FUNCTION DESCRIPTION (continued)
Pin
Pin Name
Description
22
SNSEN
Sensor Supply Enable Input. The SNSEN pin is an input, which enables the V_REF1 and V_REF2 supplies. It
allows the control module hardware/software to shut down the sensor supplies.
23
EN
Enable Input. The EN pin is an input, which enables the main switching regulator and all other functions. When
this pin is low, the power supply is in a low quiescent state.
24
V_KAM
Keep-Alive (standby) 3.3 V Regulator Output. This is a 3.3 V low quiescent, low dropout regulator for Keep
Alive memory.
33997
4
For More Information O^Mn^OTT^Oh^Ri^Os^LAPr^Ao^Nd^ALu^Oc^Gt,^{INTEGRATED CIRCUIT DEVICE DATA}
Go to: www.freescale.com