
LX2205
P
RODUCTION
D
ATA
S
HEET
Microsemi
Analog Mixed Signal Group
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
Page 5
Copyright
2007
Rev. 1.0a, 2007-03-02
W
M
.
C
1A Li-Ion Battery Charger with Power Source Management
TM
L
X
2
2
0
5
E L E C T R I C A L C H A R A C T E R I S T I C S ( C O N T I N U E D )
Unless otherwise specified, the following specifications apply over the operating temperature -40oC
≤
T
A
≤
85 oC and the following test
conditions: V
MDC
= V
USB
= 5V, V
SYS
=Open, V
SUSP
= V
SHDN
= Low, V
UCL
= High, V
BAT
= 3.9V, R
CCP
= 49.9k, R
CUS
= 2.26k, R
CTP
= 20k
LX2205
Typ
Parameter
Symbol
Test Conditions
Min
Max
Units
`
USB CURRENT LIMIT
USB Low Current Limit
I
USB
V
MDC
= 0V, UCL = Low
85
93
100
mA
USB High Current Limit
I
USB
V
MDC
= 0V
425
463
500
mA
Reverse Leakage Current
I
LEAK
V
USB
= 0V
2
10
μA
CUS Bias Voltage
LOGIC
V
CUS
2.5
V
`
CHG
,
DONE
Logic High Output
V
OH
V
SYS
= 5.0V, I
OH
= -25uA
4.0
4.5
V
CHG
,
DONE
Logic Low Output
V
OL
V
SYS
= 5.0V, I
OL
= 5mA
0.4
V
Logic Hi,
1.2
Input Logic : UCL, SUSP, SHDN
V
LOG(IN)
Logic Lo
0.4
V
Logic Hi, V
LOG
= 2V
0
2
4
Input Logic Current : UCL, SUSP,
SHDN
I
LOG(IN)
Logic Lo, V
LOG
= 0V
-2
0
2
μA
Logic Hi, 10K to 3.3V
3.2
Output Logic :
OK
DC
V
LOG(OUT)
Logic Lo, I
LOG
= 100μA
0.4
V
`
THERMAL DIE PROTECTION
Battery Charger Thermal Limiter
T
CTL
140
°C
`
BI-DIRECTIONAL PASS ELEMENT CONTROL
Discharge Switch On Resistance
R
DS(ON)
I
BAT
= -1A
275
m
Charging Threshold
V
CHG
V
SYS
– V
BAT
40
mV
Discharging Threshold
V
DCH
V
BAT
– V
SYS
40
mV
Pass Element Switch Mode Delay
t
sw
Charge–To–Discharge or Discharge–To–Charge
2.5
μs
Charging headroom
V
SYS
– V
BAT
, I
BAT
= 5mA
80
mV
Discharging headroom
V
BAT
– V
SYS
, I
BAT
= -20mA
80
mV
`
MDC INPUT
OK
DC
Voltage Threshold
V
MDC
Rising
4.0
4.15
4.3
V
Hysteresis
V
MDC(HYS)
35
mV
MDC Input current
I
MDC
15
35
μA
`
BATTERY TEMPERATURE MONITOR
Rising Threshold ; as % of V
SYS
73
75
77
%
Cold Temp Fault Threshold
V
TFB(COLD)
Falling Threshold; as % of V
SYS
71
73
75
%
Falling Threshold; as % of V
SYS
27
28.5
30
%
Hot Temp Fault Threshold
V
TFB(HOT)
Rising Threshold; as % of V
SYS
28
29.5
31
%
TFB Disable Voltage Threshold
V
TFB(DIS)
70
100
150
mV