MAX1647 Datasheet, PDF (4/24 Pages) Maxim Integrated Products – Chemistry-Independent Battery Chargers

Chemistry-Independent
Battery Chargers
ELECTRICAL CHARACTERISTICS
(V_DCIN = 18V, V_REF = 4.096V, T_A = -40°C to +85°C. Typical values are at T_A = +25°C, unless otherwise noted. Limits over this
temperature range are guaranteed by design.)
PARAMETER
SUPPLY AND REFERENCE
DCIN Quiescent Current
VL Output Voltage
REF Output Voltage
SWITCHING REGULATOR
Oscillator Frequency
DHI Maximum Duty Cycle
DHI On-Resistance
DLO On-Resistance
BATT Input Current
CS Input Current
CS to BATT Full-Scale
Current-Sense Voltage
CONDITIONS
7.5V < V_DCIN < 28V, logic inputs = VL
7.5V < V_DCIN < 28V, no load
0µA < I_SOURCE < 500µA
High or low
High or low
VL < 3.2V, V_BATT = 12V
VL < 3.2V, V_CS = 12V
MAX1647, SEL = open,
ChargingCurrent( ) = 0x07F0;
MAX1648, V_SETI = 1.024V
MIN TYP MAX UNITS
4
6
mA
5.15
5.4
5.65
V
3.74
3.9
4.07
V
200
250
310
kHz
89
%
4
7
Ω
6
14
Ω
5
µA
5
µA
160
185
200
mV
Voltage Accuracy
ERROR AMPLIFIERS
GMV Amplifier Transconductance
GMI Amplifier Transconductance
GMV Amplifier Maximum
Output Current
GMI Amplifier Maximum
Output Current
MAX1647, ChargingVoltage( ) = 0x1060,
ChargingVoltage( ) = 0x3130; MAX1648,
V_SETV = 3.15V, V_SETV = 1.05V
-0.65
0.65
%
1.4
0.2
±130
±320
mA/V
mA/V
µA
µA
TRIP POINTS AND LINEAR CURRENT SOURCES
THM THERMISTOR_OR
Over-Range Trip Point
MAX1647
THM THERMISTOR_COLD
Trip Point
THM THERMISTOR_HOT
Trip Point
THM THERMISTOR_UR
Under-Range Trip Point
MAX1647
SETV, SETI (MAX1648)
SETV Input Bias Current
SETI Input Bias Current
LOGIC LEVELS (MAX1647)
SDA, SCL Input Low Voltage
89.5
74
22
3
91
75.5
23.5
4.5
92.5
77
25
6
% of
V_REF
% of
V_REF
% of
V_REF
% of
V_REF
1
µA
5
µA
0.8
V
SDA, SCL Input High Voltage
SDA, SCL Input Bias Current
SDA Output Low Sink Current
V_SDA = 0.6V
2.8
V
-1
1
µA
6
mA
4 _______________________________________________________________________________________