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参数资料
| 型号： | LTC4002ES8-8.4 |
| 厂商： | Linear Technology |
| 文件页数： | 4/16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
(LTC4002-8.4) 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
V NTC-HOT
NTC Pin Threshold Voltage (Hot)
V NTC Falling
●
340
355
370
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
200
300
400
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 GATEHI = V CC – V GATE
? V GATELO = V CC – V GATE
●
●
●
4.5
8
0.3
V
V
V
Note 1: Absolute Maximum Rating are those values beyond which the life
of a device may be impaired.
Note 2: The LTC4002 is tested with Test Circuit 1.
Note 3: The LTC4002 is tested with Test Circuit 2.
Note 4: The LTC4002 is guaranteed to meet performance specifications
from 0 ° C to 70 ° C. Specifications over the – 40 ° C to 85 ° C operating
temperature range are assured by design, characterization and correlation
with statistical process controls.
TYPICAL PERFOR A CE CHARACTERISTICS
T A = 25 ° C, V CC = 10V unless otherwise noted.
Oscillator Frequency
Supply Current vs Temperature
Supply Current vs V CC
vs Temperature
4.0
4
CURRENT MODE
550
3.5
3.0
3
500
2.5
–50 –25
0
25
50
75
100
125
2
5
10
15
20
25
450
– 50 – 25
0
25
50
75
100
125
TEMPERATURE ( ° C)
4002 G01
V CC (V)
4002 G02
TEMPERATURE ( ° C)
4002 G03
4002f
4
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