User Guide

PAMS Technical Documentation System Module & UI
NHM-8NX
Issue 1 05/02 ãNokia Corporation Page 23
Table 22: Charger interface
TVS characteristics:
Breakdown voltage (V
BR
) 17.8Vmin (at I
T
1.0mA)
Reverse standoff voltage (V
R
) 16V
Max reverse leakage current at V
R
(I
R
) 5uA
Max peak impulse current (I
pp
) 7A (at Ta=25*C, current waveform: 10/1000us)
Max clamping voltage at I
pp
(V
c
) 26V
Charging Circuitry Electrical Characteristics
Table 23: Electrical Characteristics
Parameter
Test conditions
Symbol Min Typ Max Units
Input voltage range (fast charger, no load) VCHAR 7.0 8.4 9.2 V
RMS
Input voltage range (std charger, no load) - 11.1
7.9
16.9 V
peak
V
RMS
Absolute Maximum VCHAR voltage -0.3 - +20 V
Input resistance from VCharIn to ground Rin 2 4 6 kΩ
Master reset threshold level V
MSTR+
VMSTR-
2.0
1.8
2.1
1.9
2.2
2.0
V
VCOFFX threshold levels V
COFF+
VCOFF-
3.0
2.7
3.1
2.8
3.2
2.9
V
VCHAR detection threshold level VCH
DET+
VCHDET-
1.9
1.7
2.0
1.8
2.1
1.9
V
Continuous input current (fast charger) I
CH
- - 850 mA
Maximum input current (std charger) I
CH
- - 1.0 A
peak
Start-up mode charging current I
START
100 - 150 mA
PWM mode charge current I
LIM
1.1 1.2 1.45 A
Output voltage (Battery voltage) VBAT 0 3.6 4.2 V