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参数资料
| 型号： | LTC4001EUF#TRPBF |
| 厂商： | Linear Technology |
| 文件页数： | 3/20页 |
| 文件大小： | 0K |
| 描述： | IC CHARGER LI-ION BUCK 16-QFN |
| 标准包装： | 2,500 |
| 功能： | 充电管理 |
| 电池化学： | 锂离子（Li-Ion） |
| 电源电压： | 4 V ~ 5.5 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-WQFN 裸露焊盘 |
| 供应商设备封装： | 16-QFN（4x4） |
| 包装： | 带卷 (TR) |
LTC4001
ELECTRICAL CHARACTERISTICS
The ● denotes specifications which apply over the full operating temperature range, otherwise specifications are T A = 25 ° C.
V IN = 5V, V EN = 0V, R PROG = 549 ? , R IDET = 549 ? , unless otherwise specified.
SYMBOL PARAMETER
t TIMER
Timer Accuracy
CONDITIONS
C TIMER = 0.22 μ F
MIN
TYP
± 10
MAX
UNITS
%
V EN
Enable Input Threshold Voltage
V EN Rising
0.6
0.8
1
V
? V EN
Enable Input Hysteresis
100
mV
V PROG
V IDET
PROG Pin Voltage
IDET Pin Voltage
R PROG = 549 ?
R IDET = 549 ?
1.213
1.213
V
V
I IDET
I CHRG
V CHRG
IDET Threshold
CHRG Pin Weak Pull-Down Current
CHRG Pin Output Low Voltage
R IDET = 549 ?
V CHRG = 1V
I CHRG = 5mA
150
15
200
30
0.2
250
50
0.4
mA
μ A
V
V OL
V OH
FAULT Pin Output Low Voltage
FAULT Pin Output High Voltage
1mA Load
1mA Load
4.6
0.4
V
V
V RECHRG
Recharge Battery Threshold Voltage
V FLOAT – V RECHRG V BAT Falling
50
100
135
mV
t RB
Recharge Filter Time Constant
4
ms
t RECHRG
t TRIKL
Recharge Time
Low-Battery Trickle Charge Time
Percent of Total Charge Time
Percent of Total Charge Time, V BAT < 2.8V,
50
25
%
%
Measured Using BATSENS and GNDSENS Pins
I SS
Soft-Start Ramp Current
V BAT < V FLOAT – 100mV, V BAT Across BATSENS
6
12.8
16
μ A
and GNDSENS Pins
V COLD
NTC Pin Cold Temperature Fault
From NTC to GNDSENS Pin
V HOT
Threshold
NTC Pin Hot Temperature Fault
Threshold
Rising Threshold
Falling Threshold
From NTC to GNDSENS Pin
Falling Threshold
Rising Threshold
0.74 V INSENSE
0.72 V INSENSE
0.29 V INSENSE
0.30 V INSENSE
V
V
V
V
V DIS
NTC Disable Threshold (Falling)
From NTC to GNDSENS Pin
0.015 ? 0.02 ? 0.025 ?
V
V INSENSE V INSENSE V INSENSE
? V DIS
NTC Disable Hysteresis
From NTC to GNDSENS Pin
0.01 ? V INSENSE
V
Note 1: Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
Note 2: Operation with current limited wall adapters is allowed down to the
undervoltage lockout threshold.
Note 3: The LTC4001E is guaranteed to meet performance specifications
from 0 ° C to 85 ° C. Specifications over the – 40 ° C to 85 ° C operating
Note 4: T J is calculated from the ambient temperature T A and power
dissipation P D according to the following formula:
T J = T A + (P D ? 37 ° C/W)
Note 5: This IC includes overtemperature protection that is intended to
protect the device during momentary overload. Junction temperature will
exceed 125 ° C when overtemperature protection is active. Continuous
operation above the specified maximum operating junction temperature
my impair device reliability.
temperature range are assured by design, characterization and correlation
with statistical process controls.
4001f
3
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