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参数资料
| 型号： | LTC4002ES8-8.4 |
| 厂商： | Linear Technology |
| 文件页数： | 3/16页 |
| 文件大小： | 0K |
| 描述： | IC BATT CHARGER SW LI-ION 8SOIC |
| 标准包装： | 100 |
| 功能： | 充电管理 |
| 电池化学： | 锂离子（Li-Ion） |
| 电源电压： | 8.9 V ~ 22 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-SOIC（0.154"，3.90mm 宽） |
| 供应商设备封装： | 8-SOIC |
| 包装： | 管件 |
LTC4002
ELECTRICAL CHARACTERISTICS (LTC4002-4.2) The ● denotes the specifications which apply over the full
operating temperature range, otherwise specifications are at T A = 25 ° C. V CC = 10V unless otherwise noted.
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
I NTC
V NTC-HOT
NTC Pin Output Current
NTC Pin Threshold Voltage (Hot)
V NTC = 0.85V
V NTC Falling
●
●
75
340
85
355
95
370
μ A
mV
Hysteresis
25
mV
V NTC-COLD NTC Pin Threshold Voltage (Cold)
V NTC Rising
●
2.428
2.465
2.502
V
Hysteresis
170
mV
? V RECHRG Recharge Battery Voltage Offset from Full
V BAT(FULLCHARGED) – V RECHRG , V BAT Falling
100
150
200
mV
Charged Battery Voltage
I LEAK
CHRG Pin Leakage Current
V CHRG = 8V, Charging Stops
1
μ A
Oscillator
f OSC
DC
Switching Frequency
Maximum Duty Cycle
450
500
550
100
kHz
%
Gate Drive
t r
t f
Rise Time
Fall Time
C GATE = 2000pF, 10% to 90%
C GATE = 2000pF, 90% to 10%
20
50
ns
ns
? V GATE
? V GATEHI
? V GATELO
Output Clamp Voltage
Output High Voltage
Output Low Voltage
V CC – V GATE , V CC ≥ 9V
? V GATEHI = V CC – V GATE , V CC ≥ 7V
? V GATELO = V CC – V GATE , V CC ≥ 7V
●
●
●
4.5
8
0.3
V
V
V
(LTC4002-8.4) The ● denotes the specifications which apply over the full operating temperature range, otherwise specifications are at
T A = 25 ° C. V CC = 12V unless otherwise noted.
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
DC Characteristics
V CC
I CC
V CC Supply Voltage
V CC Supply Current
Current Mode
Shutdown Mode
Sleep Mode
●
8.9
3
3
10
22
5
5
20
V
mA
mA
μ A
V BAT(FLT)
Battery Regulated Float Voltage
9V ≤ V CC ≤ 22V (Note 2)
8.336
8.4
8.464
V
●
8.316
8.484
V
V SNS(CHG) Constant Current Sense Voltage
95
100
105
mV
6V ≤ V BAT ≤ 8V (Note 3)
●
93
100
107
mV
V SNS(TRKL) Trickle Current Sense Voltage
V BAT = 0V (Note 3)
5
10
15
mV
V TRKL
V UV
Trickle Charge Threshold Voltage
V CC Undervoltage Lockout Threshold Voltage
V BAT Rising
V CC Rising
4.7
5
7.5
5.3
8.5
V
V
? V UV
V CC Undervoltage Lockout Hysteresis Voltage
500
mV
V MSD
V ASD
I COMP
I CHRG
V CHRG
R EOC
Manual Shutdown Threshold Voltage
Automatic Shutdown Threshold Voltage
COMP Pin Output Current
CHRG Pin Weak Pull-Down Current
CHRG Pin Output Low Voltage
End-of-Charge Ratio
COMP Pin Falling
V CC – V BAT
V COMP = 1.2V
V CHRG = 1V
I CHRG = 1mA
V SNS(EOC) /V SNS(CHG)
200
15
5
350
250
100
25
0.15
10
500
35
0.3
15
mV
mV
μ A
μ A
V
%
t TIMER
Charge Time Accuracy
10
%
I NTC
NTC Pin Output Current
V NTC = 0.85V
●
75
85
95
μ A
4002f
3
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