MAX1758 Maxim, MAX1758 Datasheet - Page 2

• Manufacturer Part Number: MAX1758
• Description: Stand-Alone / Switch-Mode Li Battery Charger with Internal 28V Switch
• Manufacturer: Maxim

ABSOLUTE MAXIMUM RATINGS
DCIN, CSSP, CSSN, HSD to GND..........................-0.3V to +30V
CSSP to CSSN.......................................................-0.6V to +0.6V
BST to GND ............................................................-0.3V to +36V
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
BATT, CS to GND ...................................................-0.3V to +20V
Stand-Alone, Switch-Mode
Li+ Battery Charger with Internal 28V Switch
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
V
2
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
CSSP
CS
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
CSSN
SHDN
SHDN
= 0 to 15mA
HSD
= PGND, V
= V
= 0 to 1mA
= V
DCIN
DCIN
DCIN
DCIN
= 18V, done state
= V
= GND
= GND, V
= 18V, V
HSD
+ 0.3V)
LX
CSSP
+ 4.5V
< 28V
< 28V
< 28V
< 28V
OSC
= V
OSC
BATT
HSD
= V
DCIN
CONDITIONS
SHDN
/ 4
BATT
DCIN
= V
= 15V, any charging state
=28V, V
CS to BATT Current ............................................................±3.5A
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.........................................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
= 19V
= V
DCIN
= 28V, V
28-Pin SSOP (derate 9.5mW/°C above +70°C) ...........762mW
VL
, V
= 28V,
SHDN
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
= 4.2V, V
TYP
0.30
5.40
4.20
300
260
110
280
150
0.1
0.1
0.1
44
98
5
2
6
2
1
A
= +25°C.)
0.175
4.221
MAX
VADJ
0.40
5.70
330
450
170
540
270
28
65
14
10
10
10
7
6
2
5
= V
UNITS
REF
kHz
mΩ
mΩ
mA
mV
mV
mV
µA
µA
µA
µA
µA
µA
%
Ω
V
V
V
V
V
/ 2,