MAX1645B Datasheet, PDF (5/32 Pages) Maxim Integrated Products – Advanced Chemistry-Independent, Level 2 Battery Charger with Input Current Limiting

Advanced Chemistry-Independent, Level 2
Battery Charger with Input Current Limiting
ELECTRICAL CHARACTERISTICS (continued)
(Circuit of Figure 1, V_DD = +3.3V, V_BATT = +16.8V, V_DCIN = +18V, T_A = 0°C to +85°C, unless otherwise noted. Typical values are at
T_A = +25°C.)
PARAMETER
SDA Output Data Valid from SCL
Maximum Charge Period Without
a ChargingVoltage() or
Charging Current() Loaded
SYMBOL
t_DV
t_WDT
CONDITIONS
MIN TYP MAX UNITS
1
µs
140
175
210
s
ELECTRICAL CHARACTERISTICS
(Circuit of Figure 1, V_DD = +3.3V, V_BATT = +16.8V, V_DCIN = +18V, T_A = -40°C to +85°C, unless otherwise noted. Guaranteed by design.)
PARAMETER
GENERAL SPECIFICATIONS
DCIN Typical Operating Range
DCIN Supply Current
DCIN Supply Current Charging
Inhibited
DCIN Undervoltage Threshold
LDO Output Voltage
V_DD Input Voltage Range
V_DD Undervoltage Threshold
V_DD Quiescent Current
REF Output Voltage
BATT Undervoltage Threshold
PDS Charging Source Switch
Turn-Off Threshold
PDS Charging Source Switch
Threshold Hysteresis
PDS Output Low Voltage, PDS
Below CSSP
PDS Turn-On Current
PDS Turn-Off Current
PDL Load Switch Turn-Off
Threshold
PDL Load Switch Threshold
Hysteresis
PDL Turn-Off Current
SYMBOL
CONDITIONS
V_DCIN
I_DCIN
V_LDO
I_DD
V_REF
8V < V_DCIN < 28V
8V < V_DCIN < 28V
When AC_PRESENT
switches
DCIN rising
DCIN falling
8V < V_DCIN < 28V, 0 < I_LDO < 15mA
8V < V_DCIN < 28V (Note 1)
When the SMB
V_DD rising
responds to commands _{VDD falling}
0 < V_DCIN < 6V, V_DD = 5V, V_SCL = 5V,
V_SDA = 5V
0 < I_REF < 200µA
When I_CHARGE drops to 128mA (Note 2)
V_PDS-OFF V_CVS referred to V_BATT, V_CVS falling
V_PDS-HYS V_CVS referred to V_BATT
I_PDS = 0
PDS = CSSP
V_PDS = V_CSSP - 2V, V_DCIN = 16V
V_PDL-OFF V_CVS referred to V_BATT, V_CVS rising
V_PDL-HYS V_CVS referred to V_BATT
V_CSSN - V_PDL = 1V
MIN TYP MAX UNITS
8
7
5.15
2.80
2.1
4.035
2.4
50
28
V
6
mA
2
mA
7.85
V
5.65
V
5.65
V
2.8
V
150
µA
4.157
V
2.8
V
150
mV
100
300
mV
8
100
10
-150
12
V
300
µA
mA
-50
mV
100
300
mV
6
mA
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