SMB239
DC OPERATING CHARACTERISTICS (CONTINUED)
TA= -30°C to +85°C, VIN = +5.0V, VFLOAT = +4.2V unless otherwise noted. All voltages are relative to GND.
Symbol
Parameter
Conditions
Min
Typ
Max Unit
Logic Inputs/Output
VIL
VIH
VOL
ISINK
Input Low Level
Input High Level
SDA/STAT Output Low Level ISINK=3mA
STAT sink current VOL = 0.4V
600
300
mV
V
mV
mA
1.4
5
Battery Charger
Trickle-charge to pre-charge
VTRICKLECHG
ITRICKLECHG
VPRECHG
2.0
10
V
voltage threshold
Nominal trickle-charge
VBATT = 1.5V
mA
V
current
Pre-charge to fast-charge
voltage threshold
100mV steps
16 steps
2.400
3.100
Nominal pre-charge current
IPRECHG
25
75
212.5
125
mA
mA
mA
range
I
PRECHG = 100mA,
Pre-charge current tolerance
100
525
∆IPRECHG
T=0oC to +70oC
16 steps
Nominal Fast charge current
range
ICHG
47.5
525
I
CHG = 525mA,
Fast charge current tolerance
Float voltage range
495
4.020
-1
560
4.400
+1
mA
V
∆ICHG
VFLT
T=0oC to +70oC
20mV steps
T=+10oC to +50oC, VFLT
4.2V
=
Float voltage tolerance
%
∆VFLT
VDO
Dropout voltage
Charge termination current
range
Termination current tolerance
Recharge threshold voltage
ICHG =100mA
16 steps
55
mV
mA
ITERM
25
35
250
70
I
TERM =55mA, T=0oC to +70oC
55
115
mA
mV
∆ITERM
VRECH
Charge threshold voltage
range after power applied
Thermistor current
3 steps, VBATT < VFLT - VCH
3 settings
VCH
220
10
550
100
110
mV
µA
µA
ITHERM
∆ITHERM
I
THERM=100µA, T=0oC to
Thermistor current tolerance
90
100
+70oC
Adjustable, conditions per
THI
Charge cutoff temp (high)
Charge cutoff temp (low)
30
65
15
oC
oC
typical application
Adjustable, conditions per
typical application
TLO
-20
Note 1: Voltage and current accuracies are only guaranteed for factory-programmed settings. Changing the output voltage from that reflected in the
customer specific CSIR code will result in inaccuracies exceeding those specified above.
Note 2: The SMB239 device is not intended to function as a battery pack protector. Battery packs used in conjunction with this device need to provide
adequate internal protection and to comply with the corresponding battery pack specifications.
Summit Microelectronics, Inc
2129 3.0 2/23/2009
7
SUMMIT [ SUMMIT MICROELECTRONICS, INC. ]
