参数资料
型号: LTC4062EDD#TRPBF
厂商: Linear Technology
文件页数: 3/20页
文件大小: 0K
描述: IC BATT CHARGER LI-ION 10-DFN
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: 4.3 V ~ 8 V
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 10-WFDFN 裸露焊盘
供应商设备封装: 10-DFN(3x3)
包装: 带卷 (TR)
LTC4062
ELECTRICAL CHARACTERISTICS The ● denotes specifications which apply over the full operating
temperature range, otherwise specifications are at T A = 25 ° C. V CC = 5V, unless otherwise noted.
SYMBOL
V EN
PARAMETER
EN Input Threshold Voltage
CONDITIONS
EN Rising, 4.3V < V CC < 8V
MIN
0.4
TYP
0.7
MAX
1
UNITS
V
Hysteresis
70
mV
V CT
Charge Termination Mode Threshold
V TIMER from High to Low
0.4
0.7
1
V
Voltage
Hysteresis
50
mV
V UT
User Termination Mode Threshold
Voltage
V TIMER from Low to High
Hysteresis
3.9
4.2
50
V
mV
I DETECT
? V RECHRG
t SS
t TERM
t RECHRG
t TIMER
R C/5
V C/5
Charge Current Detection Threshold
Recharge Threshold Voltage
Soft-Start Time
Termination Comparator Filter Time
Recharge Comparator Filter Time
Charge Cycle Time
C/5 Pin Pull-Down Resistor
C/5 Input Threshold Voltage
R DET = 1k, 0 ≤ T A ≤ 85 ° C
R DET = 2k, 0 ≤ T A ≤ 85 ° C
R DET = 10k, 0 ≤ T A ≤ 85 ° C
R DET = 20k, 0 ≤ T A ≤ 85 ° C
V FLOAT – V RECHRG , 0 ≤ T A ≤ 85 ° C
I BAT from 0 to I CHG
Current Termination Mode
C TIMER = 0.1 μ F
C/5 Rising, 4.3V < V CC < 8V
90
45
8
3.8
65
0.8
3
2.55
2
0.4
100
50
10
5
100
100
1.5
7
3
3.4
0.7
110
55
12
6.2
135
2.5
14
3.45
5
1
mA
mA
mA
mA
mV
μ s
ms
ms
hr
M ?
V
Hysteresis
70
mV
T LIM
Junction Temperature in Constant
105
° C
Temperature Mode
R ON
Power FET “ON” Resistance
V BAT = 3.85V, I CC = 175mA, R PROG = 2k
375
m ?
(Between V CC and BAT)
Comparator
V IN+
IN + Pin Threshold Voltage
V IN+ Falling
0.988
1
1.012
V
Hysteresis
50
mV
V BAT-MIN
Minimum V BAT Supply Voltage for the
V CC = 0V, V BAT Falling
2.4
2.5
2.6
V
Low Power Comparator
Hysteresis
100
mV
I BAT
Supply Current for the Low Power
V CC = 0V, V BAT = 2.5V
7
9
13
μ A
Comparator
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: The LTC4062 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.
Note 3: Failure to correctly solder the exposed pad of the package to the
Note 4: Supply current includes PROG pin current and I DET pin current
(approximately 100 μ A each) but does not include any current delivered to
the battery through the BAT pin (approximately 100mA).
Note 5: This IC includes overtemperature protection that is intended to
protect the device during momentary overload conditions.
Overtemperature protection will become active at a junction temperature
greater than the maximum operating temperature. Continuous operation
above the specified maximum operating junction temperature may impair
device reliability.
PC board will result in a thermal resistance much higher than 40 ° C/W.
4062fb
3
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