参数资料
型号: LTC1980EGN#TR
厂商: Linear Technology
文件页数: 4/16页
文件大小: 0K
描述: IC PWM BATT CHARGER/CONV 24-SSOP
标准包装: 2,500
功能: 充电管理
电池化学: 锂离子,镍镉,镍氢
电源电压: 2.85 V ~ 10 V
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 24-SSOP(0.154",3.90mm 宽)
供应商设备封装: 24-SSOP
包装: 带卷 (TR)
LTC1980
ELECTRICAL CHARACTERISTICS
The ● denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T A = 25 ° C.V BAT = 2.4V, V REG = 5V, V BAT unloaded.
SYMBOL
V P2
PARAMETER
Digital Input Pull-Up Voltage, BATT1
CONDITIONS
BATT1 Input Floating
MIN
TYP
1.6
MAX
UNITS
V
V IL3
V IH3
Digital Input Low Voltage, BATT2
Digital Input High Voltage, BATT2
2
0.3
V
V
I I1
I I2
I I3
Digital Input Current, WA
Digital Input Current, BATT1
Digital Input Current, BATT2
–5
–10
–1
5
10
1
μ A
μ A
μ A
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2: The LTC1980E is guaranteed to meet performance specifications
temperature range are assured by design, characterization and correlation
with statistical process controls.
Note 3: T A = 0 ° C to 70 ° C.
from 0 ° C to 70 ° C. Specifications over the –40 ° C to 85 ° C operating
TYPICAL PERFOR A CE CHARACTERISTICS
Feedback Reference Voltage
Switching Frequency Variance
vs Temperature
vs Temperature
Regulator Load Regulation
1.2240
1.2235
1.5
1.0
0
–0.2
V BAT = 4.2V
V REG ? 3.3V
T A = 25 ° C
FIGURE 5
1.2230
1.2225
1.2220
1.2215
1.2210
0.5
0
–0.5
–1.0
–0.4
–0.6
–0.8
–1.0
1.2205
–40
–15
10 35
60
85
–1.5
–40
–15
10 35
60
85
–1.2
0
100
200 300 400
500
90
85
80
75
70
TEMPERATURE ( ° C)
3.3V Regulator Efficiency
vs Load Current
1980 G01
90
85
80
75
70
TEMPERATURE ( ° C)
5V Regulator Efficiency
vs Load Current
1980 G02
V REG
50mV/DIV
I L
500mA/DIV
LOAD CURRENT (mA)
1980 G03
Regulator Load Step Response
65
60
10
100
V BAT = 3.6V
T A = 25 ° C
FIGURE 5
1000
65
60
10
100
V BAT = 3.6V
T A = 25 ° C
R8 = 309k
FIGURE 5
1000
V BAT = 3.6V 100 μ s/DIV
V REG ? 3.3V
I L = 100mA TO 500mA
T A = 25 ° C
FIGURE 5
1980 G06
LOAD CURRENT (mA)
1980 G04
LOAD CURRENT (mA)
1980 G05
1980f
4
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