MAX1757 Maxim, MAX1757 Datasheet - Page 2

• Manufacturer Part Number: MAX1757
• Description: Stand-Alone / Switch-Mode Li Battery Charger with Internal 14V Switch
• Manufacturer: Maxim

ABSOLUTE MAXIMUM RATINGS
BATT, CS, DCIN, CSSP, CSSN, HSD to GND ........-0.3V to +15V
CSSP to CSSN.......................................................-0.6V to +0.6V
BST to GND ............................................................-0.3V to +21V
BST to LX..................................................................-0.3V to +6V
LX to PGND ..............................................-0.6V to (V
VL, SHDN, ISETIN, ISETOUT, REF, VADJ, CELL, TIMER1,
FASTCHG, FULLCHG, FAULT to GND ..................-0.3V to +30V
CS to BATT Current ............................................................±3.5A
Stand-Alone, Switch-Mode
Li+ Battery Charger with Internal 14V Switch
ELECTRICAL CHARACTERISTICS
(Circuit of Figure 1, V
V
2
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.
SUPPLY AND REFERENCE
SWITCHING REGULATOR
ISETIN
DCIN Input Voltage Range
DCIN Quiescent Supply Current
DCIN to BATT Dropout
Threshold, DCIN Falling
DCIN to BATT Dropout
Threshold, DCIN Rising
VL Output Voltage
VL Output Load Regulation
REF Output Voltage
REF Line Regulation
REF Load Regulation
PWM Oscillator Frequency
LX Maximum Duty Cycle
CSSN/CSSP Off-State Leakage
HSD Off-State Leakage
LX Off-State Leakage
HSD to LX On-Resistance
LX to PGND On-Resistance
CS to BATT Current-Sensing
Resistance
BATT, CS Input Current
TIMER2, CCI, CCS, CCV, THM to GND ................-0.3V to +6V
_______________________________________________________________________________________
= V
PARAMETER
ISETOUT
= V
DCIN
REF
, R
= V
THM
HSD
= 10kΩ, T
SYMBOL
= V
V
f
R
OSC
REF
CS
CSSP
A
= V
= 0°C to +85°C, unless otherwise noted. Typical values are at T
6V < V
Falling edge
Rising edge
6V < V
I
6V < V
6V < V
I
Nondropout f
In dropout, f
V
V
V
V
V
See PWM Controller section
Internal resistor between CS and BATT,
1.5A RMS operating
V
CELL = REF, V
V
VL
REF
CSSN
LX
LX
BST
BATT
SHDN
SHDN
CSSN
= 0 to 15mA
HSD
= PGND, V
= V
= 0 to 1mA
= V
DCIN
DCIN
DCIN
DCIN
= 14V, done state
= V
= GND
= GND, V
HSD
= 12V, V
+ 0.3V)
LX
CSSP
+ 4.5V
< 14V
< 14V
< 14V
< 14V
OSC
= V
OSC
BATT
HSD
= V
DCIN
CONDITIONS
/ 4
BATT
SHDN
DCIN
= V
= 12V, any charging state
=14V, V
PGND to GND .......................................................-0.3V to +0.3V
VL Source Current...............................................................50mA
Continuous Power Dissipation (T
Operating Temperature Range ...........................-40°C to +85°C
Junction Temperature ......................................................+150°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
=14V
DCIN
= V
= 14V, V
28-Pin SSOP (derate 9.5mW/°C above +70°C) ...........762mW
VL
= 14V,
SHDN
, V
CELL
SHDN
= GND
= GND, V
= GND
BATT
0.075
4.179
0.20
5.10
MIN
270
97
6
= V
A
= +70°C)
CS
0.125
TYP
0.30
5.40
4.20
300
150
110
280
150
0.1
0.1
0.1
44
98
= 4.2V, V
5
2
6
2
1
A
= +25°C.)
0.175
4.221
MAX
0.40
5.70
330
250
170
540
270
14
65
14
10
10
10
VADJ
7
6
2
5
= V
UNITS
kHz
mΩ
mΩ
mA
mV
mV
mV
µA
µA
µA
µA
µA
µA
%
REF
Ω
V
V
V
V
V
/2,