SMBus Level 2 Battery Charger
with Remote Sense
ELECTRICAL CHARACTERISTICS (continued)
(V
= V = V
= V
= 19V, V
- V = 4.5V, V
= V
= V
= V
= 16.8V, BATSEL = GND = PGND = 0,
CSIN
DCIN
LX
CSSP
CSSN
BST
LX
FBSA
FBSB
CSIP
C
LDO
= 1µF, V
= LDO, C
= 1µF, C
= 0.1µF, V
= 3.3V, ACIN = 2.5V; pins CCI, CCV, and CCS are compensated per
CC
REF
DAC
DD
Figure 1; T = 0°C to +85°C, unless otherwise noted. Typical values are at T = +25°C.)
A
A
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
ERROR AMPLIFIERS
GMV Amplifier Transconductance ChargingVoltage() = 16.8V, V
= 16.8V
0.0625
0.5
0.125 0.2500
mA/V
mA/V
mA/V
mV
FBS_
GMI Amplifier Transconductance ChargingCurrent() = 3968mA, V
- V
= 39.68mV
1.0
1.0
250
2.0
2.0
600
CSIP
CSIN
GMS Amplifier Transconductance InputCurrent() = 3968mA, V
- V
= 79.36mV
0.5
CSSP
CSSN
CCI/CCS/CCV Clamp Voltage
LOGIC LEVELS
0.25V < V
< 2.0V
120
CCI/S/V
SDA/SCL Input-Low_Voltage
SDA/SCL Input-High_Voltage
SDA/SCL Input Bias Current
BATSEL Input-Low_Voltage
BATSEL Input-High_Voltage
BATSEL Input Bias Current
SDA, Output Sink Current
V
V
V
= 2.7V to 5.5V
= 2.7V to 5.5V
= 2.7V to 5.5V
0.8
V
V
DD
DD
DD
2.1
-1
+1
µA
V
0.8
2.1
-1
6
V
+1
µA
mA
V
= 0.4V
(SDA)
SMBus TIMING SPECIFICATIONS (V
= 2.7V to 5.5V) (see Figures 4 and 5)
DD
PARAMETERS
SMBus Frequency
SYMBOL
CONDITIONS
MIN
10
TYP
MAX
UNITS
kHz
f
100
SMB
Bus Free Time
t
4.7
µs
BUF
Start Condition Hold Time from
SCL
t
4
4.7
4
µs
µs
µs
HD:STA
Start Condition Setup Time from
SCL
t
SU:STA
Stop Condition Setup Time from
SCL
t
SU:STO
SDA Hold Time from SCL
SDA Setup Time from SCL
SCL Low Timeout
t
300
250
25
ns
ns
ms
µs
µs
HD:DAT
t
SU:DAT
t
(Note 1)
35
TIMEOUT
SCL Low Period
T
LOW
4.7
4
SCL High Period
T
HIGH
Maximum Charging Period
Without a ChargeVoltage() or
ChargeCurrent() Command
140
175
210
s
_______________________________________________________________________________________
5
MAXIM [ MAXIM INTEGRATED PRODUCTS ]
