参数资料
型号: LTC3214EDD#TRPBF
厂商: Linear Technology
文件页数: 3/12页
文件大小: 0K
描述: IC LED DRIVR WHITE BCKLGT 10-DFN
标准包装: 2,500
拓扑: 升压(升压),切换式电容器(充电泵)
输出数: 1
内部驱动器:
类型 - 主要: 闪灯/白光
类型 - 次要: 白色 LED
频率: 600kHz ~ 1.2MHz
电源电压: 2.9 V ~ 4.5 V
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)
工作温度: -40°C ~ 85°C
LTC3214
ELECTRICAL CHARACTERISTI CS The l denotes the speci?cations which apply over the full operating
temperature range, otherwise speci?cations are at T A = 25°C. V IN = 3.6V, C IN = C1 = C2 = 2.2μF, C CPO = 4.7μF.
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
EN
High Level Input Voltage (V IH )
Low Level Input Voltage (V IL )
l
l
1.4
0.4
V
V
Input Current (I IH )
Input Current (I IL )
V EN = 3.6V
l
l
–1
14.4
20
1
μA
μA
I SET
V ISET
I SET = 50μA
l
1.18
1.21
1.24
V
I ISET
l
184
μA
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 3: The LTC3214E is guaranteed to meet performance speci?cations
from 0°C to 70°C. Speci?cations over the –40°C to 85°C ambient
operating temperature range are assured by design, characterization and
correlation with statistical process controls.
Note 2: Based on long-term current density limitations. Assumes an
operating duty cycle of ≤ 10% under absolute maximum conditions for
durations less than 10 seconds. Max current for continuous operation is
300mA.
TYPICAL PERFORMANCE CHARACTERISTICS (T A = 25°C unless otherwise speci?ed)
I LED Dropout Voltage vs
LED Current
I LED vs R SET
1x Mode Charge Pump Open-Loop
Output Resistance vs Temperature
0.12
0.10
600
500
1.0
0.9
I CPO = 100mA
V IN = 2.9V
0.08
0.06
0.04
0.02
400
300
200
100
0.8
0.7
0.6
0.5
V IN = 3.6V
V IN = 4.5V
0
0
100
200
300
400
500
0
0
50
100 150 200 250 300 350 400
0.4
–40
–15
10
35
60
85
LED CURRENT (mA)
3216 G01
R SET (kΩ)
1573 G02
TEMPERATURE (°C)
3216 G03
3214fb
3
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