User Guide

CC Technical Documentation System Module
NPM-10 (3595)
Issue 2 03/2004 ©2004 Nokia Corporation Confidential Page 21
• Max reverse leakage current at V
R
(I
R
)5 uA
• Max peak impulse current (I
pp
)7 A (at Ta=25
o
C, current waveform: 10/100 us)
• Max clamping voltage at I
pp
(V
c
)26 V
Charging Circuitry Electrical Characteristics
Note: VCHAR is used as a supply voltage for charging control parts.
Table 20: Electrical Characteristics
Parameter Test Conditions Symbol Min Type 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
Charging cut-off limits (programmable) VBATLim
1+
VBATLim1-
VBATLim2L+
VBATLim2L-
VBATLim2H+
VBATLim2H-
3.54
3.32
4.85
4.65
5.10
4.90
3.65
3.50
5.0
4.85
5.25
5.10
3.76
3.66
5.15
5.05
5.40
5.30
V
Charging switch resistance (includes bonding
and leads) Temp =65°C (ambient)
R
SW
- - 0.3 W
PWM frequency (std charger) 0.5 1 1.5 Hz
PWM duty cycle 0 - 100 %
Switch output current slew rate SR 0.4 0.6 0.8 A/ms