MAX1873 Maxim, MAX1873 Datasheet - Page 2

• Manufacturer Part Number: MAX1873
• Description: Simple Current-Limited Switch-Mode Li Charger Controller
• Manufacturer: Maxim

ABSOLUTE MAXIMUM RATINGS
CSSP, CSSN, DCIN to GND ...................................-0.3V to +30V
VL, ICHG/EN to GND................................................-0.3V to +6V
VH, EXT to DCIN.......................................................-6V to +0.3V
VH, EXT to GND ......................................(V
EXT to VH .................................................................+6V to -0.3V
DCIN to VL..............................................................+30V to -0.3V
VADJ, REF, CCI, CCV, CCS,
BATT, CSB to GND.................................................-0.3V to +20V
CSSP to CSSN.......................................................-0.3V to +0.6V
CSB to BATT..........................................................-0.3V to +0.6V
Simple Current-Limited Switch-Mode
Li+ Charger Controller
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
ELECTRICAL CHARACTERISTICS
(Circuit of Figure 1, V
MAX1873S: V
otherwise noted.)
2
INPUT SUPPLY AND REFERENCE
DCIN Input Voltage Range
D C IN Qui escent S up p l y C ur r ent
DCIN to BATT Undervoltage Threshold
DCIN to BATT Undervoltage Threshold
VL Output Voltage
VL Output Load Regulation
REF Output Voltage
REF Line Regulation
REF Load Regulation
SWITCHING REGULATOR
PWM Oscillator Frequency
EXT Driver Source On-Resistance
EXT Driver Sink On-Resistance
VH Output Voltage
CSSN/CSSP Input Current
CSSN/CSSP Off-State Leakage
BATT, CSB Input Current
BATT, CSB Input Current
IOUT to GND.............................................-0.3V to (VL + 0.3V)
_______________________________________________________________________________________
BATT
PARAMETER
= V
CSB
DCIN
= 12.6V; MAX1873T: V
= V
CSSP
= V
DCIN
CSSN
6.0V < V
DCIN ≤ BATT
CSSP = DCIN, input falling
CSSP = DCIN, input rising
6.0V < V
I
I
6.0V < V
I
DCIN - VH, 6V < V
V
V
ICHG/EN = 0 (charger disabled)
ICHG/EN = REF (charger enabled)
DCIN ≤ BATT (input power removed)
VL
REF
REF
CSSN
DCIN
+ 0.3V) to -0.3V
= 0 to 3mA
= 18V, V
BATT
= 21µA (200kΩ load)
= 0 to 1mA
/V
= V
DCIN
DCIN
DCIN
CSSP
= V
SSN
CSB
ICHG/EN
< 28V
< 28V
< 28V
/V
= 28V, V
CSSP
CONDITIONS
= 16.8V; T
DCIN
= 18V, V
= V
DCIN
VL Source Current ............................................................+50mA
VH Sink Current ................................................................+40mA
Continuous Power Dissipation (T
Operating Temperature Range
Junction Temperature ..................................................... +150°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) ................................ +300°C
<28V, I
16-Pin QSOP (derate 8.3mW/°C above +70°C..........+667mW
REF
MAX1873_EEE ................................................-40°C to +85°C
A
= 28V
= 0°C to +85°C. Typical values are at T
, V
BATT
VH
VADJ
= 0 to 20mA
= V
CSB
= V
REF
= 18V
/2. MAX1873R: V
4.179
0.05
0.22
5.15
4.75
MIN
270
6
A
= +70°C)
TYP
5.40
4.20
300
250
0.1
2.5
1.5
0.2
1.5
15
22
70
4
2
6
4
BATT
A
0.175
4.221
= V
MAX
= +25°C, unless
0.38
5.65
5.75
330
200
500
4.5
28
10
50
65
13
7
6
7
5
1
5
CSB
= 8.4V;
UNITS
ppm/V
kHz
mA
mV
mV
mV
µA
µA
µA
µA
µA
Ω
Ω
V
V
V
V
V
V