参数资料
型号: LTC3550EDHC-1#PBF
厂商: Linear Technology
文件页数: 7/24页
文件大小: 0K
描述: IC CHARGER BATT DUAL 16-DFN
标准包装: 73
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: 16-WFDFN 裸露焊盘
供应商设备封装: 16-DFN(5x3)
包装: 管件
LTC3550-1
TYPICAL PERFOR A CE CHARACTERISTICS
T A = 25°C, unless otherwise noted.
Undervoltage Lockout Threshold
vs Temperature
Recharge Threshold Voltage
vs Temperature
Battery Drain Current
vs Temperature
4.25
4.16
5
V BAT = 4.2V
4.20
DCIN UVLO
4.14
4
V DCIN , V USBIN (NOT CONNECTED)
4.15
4.10
4.12
3
4.05
4.10
V DCIN = V USBIN = 4.3V
2
4.00
USBIN UVLO
4.08
V DCIN = V USBIN = 8V
1
3.95
3.90
4.06
0
3.85
–50
–25
0
25
50
75
100
4.04
–50
–25
0
25
50
75
100
–1
–50
–25
0 25 50
75
100
TEMPERATURE ( ° C)
3550-1 G19
Charge Current During Turn-On
and Turn-Off
100
TEMPERATURE ( ° C)
3550-1 G20
Buck Regulator Ef?ciency vs V CC
100
TEMPERATURE ( ° C)
Buck Regulator Ef?ciency
vs Output Current
V CC = 2.7V
3550-1 G21
I BAT
95
I OUT = 100mA
90
500mA/DIV
90
I OUT = 10mA
80
V CC = 4.2V
85
ENABLE
80
70
V CC = 3.6V
5V/DIV
75
I OUT = 600mA
60
V DCIN = 5V
100 μ s/DIV
70
2
3
4
5
6
50
0.1
1
10
100
1000
R IDC = 1.25k
3550-1 G22
Buck Regulator Output Voltage
vs Temperature
V CC (V)
Oscillator Frequency
vs Temperature
35501 G23
I LOAD (mA)
Oscillator Frequency vs V CC
35501 G24
1.91
1.90
V CC = 3.6V
I OUT = 100mA
1.70
1.65
V CC = 3.6V
1.8
1.7
1.89
1.60
1.88
1.55
1.50
1.6
1.5
1.87
1.45
1.86
1.85
1.40
1.35
1.4
1.3
1.84
–50 –25
0
25
50
75
100
125
1.30
–50 –25
0
25
50
75
100
125
1.2
2
3
4
5
6
TEMPERATURE ( ° C)
3550-1 G25
TEMPERATURE ( ° C)
3550-1 G26
V CC (V)
3550-1 G27
35501f
7
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