DSB75 Development Support Board Rev. B1 Hardware Description
Confidential / Released
DSB75_hd_v12
Page 82 of 96
2008-08-26
Parameters
Condition
Min.
Typical
Max.
Unit
Charger voltage
4.75
6.6
10
V
Fast charging current
(Jumper X600 not set)
450 500 550 mA
Fast charging current
(Jumper X600 set)
950 1000 1050 mA
Trickle charge current
(Deep Discharge
Lockout)
4 5 7 mA
Charging interface
Trickle charge current
(Undervoltage Lockout)
25 30 35 mA
Battery voltage
3.3
3.8
4.2
V
NTC to ground at
BATTEMP (near
battery) @ 25
˚
C
10
See module
specification
[1] for detail.
k
Ω
Battery interface
Peak current
2.5
A
Output voltage range
(load resistance 5k
Ω
)
±
4.9
±
5.0
±
5.4
V
Output short-circuit
current
±
19
mA
Output resistance
520
Ω
Input voltage range
-25
25
V
Input resistance
3.2
5.2
7.2
k
Ω
Input threshold low
0.65
1.25
V
RS-232 interfaces
COM1 to COM3
Input threshold high
1.6
2.5
V
V
OL
0.4
V
V
OH
2.8
5.0 V
V
IL
0.8
V
V
IH
2.4
5.3 V
Internal pull-up resistor 3.3
k
Ω
I
2
C interface 5V
External pull-up resistor
recommended
3.2 3.3
k
Ω
External pull-up resistor
required
0.75 1
k
Ω
I
2
C interface 3V
Voltage levels
See module specification [1] for detail.
