LX2205
PRODUCTION DATA SHEET
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
WWW.Microsemi .COM
1A Li-Ion Battery Charger with Power Source Management
TM
®
L
L
X
X
2
2
2
2
0
0
5
5
ELECTRICAL CHARACTERISTICS (CONTINUED)
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
Parameter Symbol Test Conditions
Min Typ 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 V
CUS
2.5 V
`
LOGIC
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 mΩ
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
