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参数资料
| 型号： | LTC4011CFE#PBF |
| 厂商： | Linear Technology |
| 文件页数： | 3/26页 |
| 文件大小： | 0K |
| 描述： | IC BATT CHARGER HIEFF 20TSSOP |
| 标准包装： | 74 |
| 功能： | 充电管理 |
| 电池化学： | 镍镉（NiCd）、镍金属氢化物（NiMH） |
| 电源电压： | 4.5 V ~ 34 V |
| 工作温度： | 0°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 20-TSSOP（0.173"，4.40mm 宽）裸露焊盘 |
| 供应商设备封装： | 20-TSSOP-EP |
| 包装： | 管件 |
| 产品目录页面： | 1341 (CN2011-ZH PDF) |
LTC4011
ELECTRICAL CHARACTERISTICS The L indicates specifications which apply over the full operating
temperature range, otherwise specifications are at T A = 25°C. V CC = 12V, BAT = 4.8V, GND = PGND = 0V, unless otherwise noted.
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Thermistor Termination
V RT
I RT
Output Voltage
Short-Circuit Current
R L = 10k
V RT = 0V
l
l
3.075
3
–9
3.3
3.525
3.6
–1
V
V
mA
PWM Current Source
V FS
BAT – SENSE Full-Scale Regulation
Voltage (Fast Charge)
0.3V < BAT < V CC – 0.3V (Note 5)
BAT = 4.8V
l
95
95
100
100
105
105
mV
mV
V PC
BAT – SENSE Precharge Regulation Voltage 0.3V < BAT < V CC – 0.3V (Note 5)
BAT = 4.8V
l
16
16
20
20
24
24
mV
mV
V TC
BAT – SENSE Top-Off Charge
Regulation Voltage
0.3V < BAT < V CC – 0.3V (Note 5)
BAT = 4.8V
l
6.5
6.5
10
10
13.5
13.5
mV
mV
? V LI
BAT – SENSE Line Regulation
5.5V < V CC < 25V, Fast Charge
±0.3
mV
I BAT
I SENSE
BAT Input Bias Current
SENSE Input Bias Current
0.3V < BAT < V CC – 0.1V
SENSE = BAT
–2
50
2
150
mA
μA
I OFF
f TYP
f MIN
Input Bias Current
Typical Switching Frequency
Minimum Switching Frequency
SENSE or BAT, V CELL = 0V
l
l
l
–1
460
20
0
550
30
1
640
μA
kHz
kHz
DC MAX
Maximum Duty Cycle
98
99
%
V OL(TG)
V OH(TG)
t R(TG)
t F(TG)
V OL(BG)
TGATE Output Voltage Low
(V CC – TGATE, Note 7)
TGATE Output Voltage High
TGATE Rise Time
TGATE Fall Time
BGATE Output Voltage Low
V CC > 9V, No Load
V CC < 7V, No Load
V CC – TGATE, No Load
C LOAD = 3nF, 10% to 90%
C LOAD = 3nF, 10% to 90%
No Load
l
l
l
l
5
V CC – 0.5
5.6
V CC
0
35
45
0
8.75
50
100
100
50
V
V
mV
ns
ns
mV
V OH(BG)
BGATE Output Voltage High
No Load
l INTV DD – 0.075
INTV DD
V
t R(BG)
t F(BG)
BGATE Rise Time
BGATE Fall Time
C LOAD = 1.6nF, 10% to 90%
C LOAD = 1.6nF, 10% to 90%
35
15
80
80
ns
ns
ADC Inputs
I LEAK
Analog Channel Leakage
0V < V CELL < 2V, 550mV < V TEMP < 2V
±100
nA
Charger Thresholds
V BP
V BOV
V MFC
V FCBF
Battery Present Threshold Voltage
Battery Overvoltage
Minimum Fast Charge Voltage
Fast Charge Battery Fault Voltage
l
l
l
l
320
1.815
850
1.17
350
1.95
900
1.22
370
2.085
950
1.27
mV
V
mV
V
? V TERM
V AR
? T TERM
T MIN
T MAXI
– ? V Termination
Automatic Recharge Voltage
?T Termination (Note 8)
Minimum Charging Temperature (Note 8)
Maximum Charge Initiation
Temperature (Note 8)
CHEM OPEN (NiCd)
CHEM = 0V (NiMH)
V CELL Decreasing
CHEM = 3.3V (NiCd)
CHEM = 0V (NiMH)
V TEMP Increasing
V TEMP Decreasing, Not Charging
l
l
l
l
l
l
l
16
6
1.260
1.3
0.5
0
41.5
20
10
1.325
2
1
5
45
25
14
1.390
2.7
1.5
9
47
mV
mV
V
°C/min
°C/min
°C
°C
4011fb
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