Datasheet

Stand-Alone Switch-Mode
Lithium-Ion Battery-Charger Controller
ELECTRICAL CHARACTERISTICS
(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
= -40°C to +85°C, unless otherwise noted.) (Note 9)
PARAMETER CONDITIONS MIN MAX UNITS
DCIN Input Voltage Range
VL Output Voltage
REF Output Voltage
REF Line Regulation
PWM Oscillator Frequency
DHI, DLO On-Resistance
BATT, CS Input Voltage Range
Battery Regulation Voltage (V
BATTR
)
Absolute Voltage Accuracy
CS to BATT Current-Sense Voltage
CS to BATT Full-Scale Current-Sense
Voltage
CS to BATT Current-Sense Voltage When in
Prequalification State
CS to BATT Hard Current-Limit Voltage
CSSP to CSSN Current-Sense Voltage
CSSP to CSSN Full-Scale Current-Sense
Voltage
THM Trip-Threshold Voltage
THM Low-Temperature Current
THM COLD Threshold Resistance (Note 3)
BATT Undervoltage Threshold (Note 4)
BATT Overvoltage Threshold (Note 5)
BATT Charge Current Full-Charge
Termination Threshold, CS-BATT (Note 6)
Temperature Measurement Frequency 1nF on TIMER1 and TIMER2
4.55 4.8 V/cell
35 55 mV
0.93 1.37 Hz
6.0V < V
DCIN
< 28V
6V < V
DCIN
< 28V
V
BATT
= 15V, CELL = VL
CELL = float, GND, VL, or REF
Not including V
ADJ
resistor tolerances
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
THM low-temperature or high-temperature current
V
THM
= 1.4V
Combines THM low-temperature current and
THM rising threshold, V
TRT
/I
TLTC
260 340 kHz
6 mV
4.166 4.242 V
7 Ω
019V
4.158 4.242 V/cell
-1 1 %
628V
5.1 5.7 V
25 55 mV
180 220 mV
317mV
350 420 mV
535mV
85 115 mV
1.386 1.414 V
46.2 51.5 µA
26.92 30.59 kΩ
2.4 2.6 V/cell
SUPPLY AND REFERENCE
SWITCHING REGULATOR
ERROR AMPLIFIERS
STATE MACHINE
Maxim Integrated
5
MAX1737