NSB–6
System Module
The voltage limit (VLIM1 or VLIM2) is selected by logic LOW or logic
HIGH on the CHAPS (N101) VLIM input pin. VLIM is fixed low in hard-
ware.
When the switch in output overvoltage situation has once turned OFF, it
stays OFF until the the battery voltage falls below VLIM and PWM = LOW
is detected. The switch can be turned on again by setting PWM = HIGH.
VCH
VCH<VOUT
VOUT
VLIM
SWITCH
PWM (32Hz)
Page 14
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E Nokia Mobile Phones Ltd.
PAMS Technical Documentation
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Issue 1 06/2000
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