Datasheet
Stand-Alone Switch-Mode
Lithium-Ion Battery-Charger Controller
ELECTRICAL CHARACTERISTICS (continued)
(Circuit of Figure 1, V
DCIN
= V
CSSN
= V
CSSP
= +18V, SHDN = VL, CELL = GND, V
BATT
= V
CS
= +4.2V, V
VADJ
= V
REF
/ 2, ISETIN =
ISETOUT = REF, R
THM
= 10kΩ, T
A
= 0°C to +85°C, unless otherwise noted. Typical values are at T
A
= +25°C.)
Full-Charge Timer
81 90 100
min
Fast-Charge Timer
81 90 100
min
BATT Overvoltage Threshold (Note 5)
4.55 4.67 4.8
V/cell
BATT Charge Current Full-Charge
Termination Threshold CS-BATT (Note 6)
35 44 55
mV
BATT Recharge Voltage Threshold (Note 7)
94 95 96
% of
V
BATTR
TIMER1, TIMER2 Oscillation Frequency
2.1 2.33 2.6
kHz
Prequalification Timer
6.25 7.5 8.75
min
CCI, CCS Clamp Voltage with Respect
to CCV
25 200
mV
CCV Clamp Voltage with Respect
to CCI, CCS
25 200
mV
THM Trip-Threshold Voltage
1.386 1.4 1.414
V
THM Low-Temperature Current
46.2 49 51.5
µA
THM High-Temperature Current
344 353 362
µA
THM COLD Threshold Resistance (Note 3)
26.92 28.70 30.59
kΩ
THM HOT Threshold Resistance (Note 3)
3.819 3.964 4.115
kΩ
BATT Undervoltage Threshold (Note 4)
2.4 2.5 2.6
V/cell
THM low-temperature or high-temperature
current
V
THM
= 1.4V
V
THM
= 1.4V
Combines THM low-temperature current and
THM rising threshold, V
TRT
/I
TLTC
Combines THM high-temperature current and
THM rising threshold, V
TRT
/I
THTC
CCV Amplifier Transconductance (Note 2)
0.39 0.584 0.80
mS
CCV Amplifier Maximum Output Current
±50
µA
CS to BATT Current-Sense Voltage
30 40 50
mV
CS to BATT Full-Scale Current-Sense
Voltage
185 200 215
mV
CS to BATT Current-Sense Voltage When in
Prequalification State
51015
mV
CS to BATT Hard Current-Limit Voltage
355 385 415
mV
CSSP to CSSN Current-Sense Voltage
10 20 30
mV
CSSP to CSSN Full-Scale
Current-Sense Voltage
90 105 115
mV
CCI Amplifier Transconductance
0.6 1 1.4
mS
CCI Amplifier Output Current
±100
µA
CCS Amplifier Transconductance
1.2 2 2.6
mS
CCS Amplifier Output Current
±100
µA
4.15V < V
BATT
< 4.25V, V
CCV
= 2V
3.5V < V
BATT
< 5V, V
CCV
= 2V
V
ISETOUT
= V
REF
/ 5
V
BATT
= 3V to 17V, CELL = GND or VL
V
BATT
< 2.4V per cell
6V < V
CSSP
< 28V, V
ISETIN
= V
REF
/ 5,
V
CCS
= 2V
6V < V
CSSP
< 28V, V
CCS
= 2V
V
CCI
= 2V
V
CS
- V
BATT
= 0, 400mV
I
SET
= REF, V
CCS
= 2V
V
CSSP
- V
CSSN
= 0, 200mV
PARAMETER MIN TYP MAX UNITSCONDITIONS
STATE MACHINE
ERROR AMPLIFIERS
Maxim Integrated
3
MAX1737