参数资料
型号: LTC1980EGN#TR
厂商: Linear Technology
文件页数: 5/16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
TYPICAL PERFOR A CE CHARACTERISTICS
BGTDR
1V/DIV
RGTDR
1V/DIV
Typical BGTDR and RGTDR
Waveforms
I SENSE
20mV/DIV
PIN 21
FIGURE 5
Typical I SENSE Waveforms,
Regulator
V REG
50mV/DIV
I SENSE
50mV/DIV
Typical Operation with Burst
Mode Operation Disabled
V BAT = 3.6V
V REG = 3.3V
T A = 25 ° C
I L = 500mA
1 μ s/DIV
1980 G07
V BAT = 3.6V
V REG = 3.3V
I L = 500mA
T A = 25 ° C
FIGURE 5
1 μ s/DIV
1980 G08
V BAT = 3.6V
V REG ? 3.3V
I L = 500mA
MODE = V BIAS1
T A = 25 ° C
1 μ s/DIV
1980 G09
FIGURE 5
Regulator Output Transient
Regulator Output Transient
Response—Wall Adapter “Hot
V REG
50mV/DIV
BGTDR
2V/DIV
Burst Mode Circuit Operation
V REG
1V/DIV
V LDO
0.1V/DIV
Response—Wall Adapter Removal
V REG
1V/DIV
V LDO
0.5V/DIV
Plugged”
V BAT = 3.6V
V REG = 3.3V
I L = 10mA
T A = 25 ° C
FIGURE 5
200 μ s/DIV
1980 G10
V BAT = 3.6V 500 μ s/DIV
V REG = 3.3V
V LDO = 3.1V
I LDO = 200mA
V WALL ADAPTER = 6V TO 0V
T A = 25 ° C
FIGURE 5
1980 G11
V BAT = 3.6V 500 μ s/DIV
V REG = 3.3V
V LDO = 3.1V
I LDO = 200mA
V WALL ADAPTER = 0V TO 6V
T A = 25 ° C
FIGURE 5
1980 G12
Mode Pin Input Current vs V IN
Typical C TIMER Waveform
1.5
V BAT = 2.4V
V REG = 5V
1.0 T A = 25 ° C
0.5
0
–0.5
TIMER
100mV/DIV
PIN 17
–1.0
C TIMER = 0.24 μ F
5ms/DIV
1980 G14
T A = 25 ° C
–1.5
0
0.5
1.0 1.5 2.0
2.5
3.0
MODE PIN V IN (V)
1980 G13
1980f
5
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