Nokia Mobile Phones NSE-5 Series Service Manual page 25

PAMS
Technical Documentation
Pin IB- Name Function
pin
2, – L_GN Logic and
14 D charging
ground
(sepa-
rated from
phone
GND by
EMI com-
ponents)
4,5 – CHRG Charger
_CTR _C c control
L L (f (from
phone to
accessory accessory
1,3 , – VIN Fast
charger h
(from ac- (from ac-
cessory to
phone) hone)
Slow
charger
( (fom ac-
cessory to
phone)
Issue 1 07/99
Table 3. System/IBI connector
Min Typ Max
0
0
1.7
32
1
20
30
0
0 0.85
0
0
(continued)
Unit Description
1.0 A Ground current
0.8 V Output low voltage @ I
20 mA
2.9 V Output high voltage @ I
20 mA
37 Hz PWM frequency
99 % PWM duty cycle
k Serial (EMI filtering) resistor
in phone
k Pull–down resistor in phone
8.5 V Charging voltage.
A Charging current.
100 mV- Ripple voltage @ f =
20...200Hz, load = 3 & 10
p–p
100 mV- Ripple voltage @ f = 0.2...30
kHz, load = 3 & 10
p–p
100 mV- Ripple voltage @ f > 30 kHz,
load = 3 & 10
p–p
200 mV- Total ripple voltage @ f > 20
Hz, load = 3 & 10
p–p
15 V Charging voltage (max. = un-
pea
loaded, +20 % overvoltage in
k
mains).
1.0 A Charging current (max. =
pea
shorted, +20 % overvoltage
k
in mains).
NSE–5
System Module
OL
OH
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