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参数资料
| 型号： | MAX1757EAI+T |
| 厂商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分类： | 稳压器 |
| 英文描述： | Stand-Alone, Switch-Mode Li+ Battery Charger with Internal 14V Switch |
| 中文描述： | BATTERY CHARGE CONTROLLER, 330 kHz SWITCHING FREQ-MAX, PDSO28 |
| 封装： | 5.30 MM, 0.65 MM PITCH, SSOP-28 |
| 文件页数： | 12/17页 |
| 文件大小： | 218K |
| 代理商： | MAX1757EAI+T |
MAX1757
Stand-Alone, Switch-Mode
Li+ Battery Charger with Internal 14V Switch
4
_______________________________________________________________________________________
ELECTRICAL CHARACTERISTICS (continued)
(Circuit of Figure 1, VDCIN = VHSD = VCSSP = VCSSN = 12V, V SHDN = VVL, VCELL = GND, VBATT = VCS = 4.2V, VVADJ = VREF/2,
VISETIN = VISETOUT = VREF, RTHM = 10k
, TA = 0°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C.)
CONDITIONS
% of
VBATTR x
cells
94
95
96
BATT Recharge Voltage
Threshold (Note 6)
mA
250
330
400
FULLCHG BATT Current
Termination Threshold (Note 5)
V/cell
4.55
4.67
4.8
BATT Overvoltage Threshold
(Note 4)
V/cell
2.4
2.5
2.6
BATT Undervoltage Threshold
(Note 3)
UNITS
MIN
TYP
MAX
SYMBOL
PARAMETER
TIMER1 and TIMER2
Oscillation Frequency
2.1
2.33
2.6
kHz
Prequalification Timer
6.25
7.5
8.75
min
Fast-Charge Timer
81
90
100
Full-Charge Timer
81
90
100
Top-Off Timer
40.5
45
49.8
Temperature Measurement
Frequency
0.98
1.12
1.32
Hz
SHDN Input Voltage High
VIH
1.4
V
SHDN Input Voltage Low
VIL
0.6
V
VADJ, ISETIN, ISETOUT Input
Voltage Range
0VREF
V
VVADJ, VISETIN, VISETOUT = 0 or 4.2V
-50
50
nA
SHDN Input Bias Current
V SHDN = 0 or VVL
-1
1
A
ISETOUT Shutdown Threshold
Voltage (Note 3)
150
220
300
mV
CELL Input Bias Current
VCELL = 0 or VVL
-5
5
A
VADJ, ISETIN, ISETOUT Input
Bias Current
CELL Input Voltage
For 1 cell
00.5
V
For 3 cells
VREF - 0.3
VREF + 0.3
For 2 cells (floating)
1.5
2.5
STATE MACHINE
CONTROL INPUTS/OUTPUTS
min
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