User Guide

NSW-5
System Module UT5U
PAMS Technical Documentation
Page 30
Issue 1 10/00
 Nokia Mobile Phones Ltd.
UISWITCH main features
– two adjustable constant current sinks for keyboard and LCD LEDs
– LED ON/OFF control
– buzzer ON/OFF control
– FET switch for buzzer current
– vibra ON/OFFcontrol (no internal vibrator in NSW–5)
– FET switch for vibra current
– thermal shutdown
– power down function for optimum current consumption
– package TSSOP20 because of low height requirement