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参数资料
| 型号： | LTC3230EUD#PBF |
| 厂商： | Linear Technology |
| 文件页数： | 4/16页 |
| 文件大小： | 0K |
| 描述： | IC LED DRIVR WHITE BCKLGT 20-QFN |
| 标准包装： | 121 |
| 拓扑： | 升压（升压），切换式电容器（充电泵） |
| 输出数： | 5 |
| 内部驱动器： | 是 |
| 类型 - 主要： | 背光 |
| 类型 - 次要： | 白色 LED |
| 频率： | 900kHz |
| 电源电压： | 2.7 V ~ 5.5 V |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 20-WFQFN 裸露焊盘 |
| 供应商设备封装： | 20-QFN 裸露焊盘（3x3） |
| 包装： | 管件 |
| 工作温度： | -40°C ~ 85°C |
| 产品目录页面： | 1340 (CN2011-ZH PDF) |
LTC3230
ELECTRICAL CHARACTERISTICS
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: Based on long-term current density limitations. Assumes an
operating duty cycle of ≤10% under absolute maximum conditions
for durations less than 10 seconds. Maximum current for continuous
operation is 125mA.
Note 3: Based on long-term current density limitations. LD01 and LD02
have short circuit protection which limits current to no more than 750mA.
Assumes an operating short circuit duty cycle less than 3% for durations
less than 10 seconds.
Note 4: The LTC3230 is guaranteed to meet performance speci?cations
from 0°C to 85°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 5: This IC includes overtemperature protection that is intended
to protect the device during momentary overload conditions. Junction
temperature will exceed 125°C when overtemperature protection is active.
Continuous operation above the speci?ed maximum operating junction
temperature may result in device degradation or failure.
Note 6: 1.5x mode output impedance is de?ned as (1.5V IN – V CPO )/I OUT . 2x
mode output impedance is de?ned as (2V IN – V CPO )/I OUT .
Note 7: If the part has been shut down then the initial enable time is about
100μs longer due to the bandgap start-up and charge pump soft-start
times.
TYPICAL PERFORMANCE CHARACTERISTICS
T A = 25°C unless otherwise noted.
Dropout Time from Enable
Dropout Time when Enabled
1.5x CPO Ripple
CPO
1x
1.5x
2x
CPO
2V/DIV
1x
1.5x
2x
2V/DIV
MODE RESET
V CPO
20mV/DIV
AC COUPLED
ENM
2V/DIV
ENM
2V/DIV
ENS = LOW
400 μ s/DIV
3230 G01
ENS = HIGH
400 μ s/DIV
3230 G02
V IN = 3V
400ns/DIV
3230 G03
I CPO = 80mA
C1 = C2 = C6 = 1 μ F
1.5x Mode Charge Pump Open-
1x Mode Switch Resistance vs
Loop Output Resistance vs
2x CPO Ripple
Temperature
Temperature (1.5V IN – V CPO )/I CPO
2.0
I CPO = 100mA
1.9 V IN = 3.6V
1.8
11
10
V IN = 3V
V CPO = 4.2V
C1 = C2 = C6 = 1 μ F
V CPO
20mV/DIV
AC COUPLED
1.7
1.6
1.5
1.4
1.3
9
8
7
V IN = 3.6V
400ns/DIV
3230 G04
1.2
6
I CPO = 80mA
C1 = C2 = C6 = 1 μ F
1.1
1.0
–40
–15
10
35
60
85
5
–40
–15
10 35
60
85
TEMPERATURE ( ° C)
3230 G05
TEMPERATURE ( ° C)
3230 G06
3230fa
4
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LTC3230EUD-TRPBF | 制造商:LINER 制造商全称:Linear Technology 功能描述:5-LED Main/Sub Display Driver with Dual LDO |
| LTC3240 | 制造商:LINER 制造商全称:Linear Technology 功能描述:3.3V/2.5V Step-Up/ Step-Down Charge Pump DC/DC Converter |
| LTC3240-2.5 | 制造商:LINER 制造商全称:Linear Technology 功能描述:Wide VIN Range, Low Noise, 250mA Buck-Boost Charge Pump |
| LTC3240-3.3 | 制造商:LINER 制造商全称:Linear Technology 功能描述:Wide VIN Range, Low Noise, 250mA Buck-Boost Charge Pump |
| LTC3240EDC-2.5 | 制造商:LINER 制造商全称:Linear Technology 功能描述:3.3V/2.5V Step-Up/ Step-Down Charge Pump DC/DC Converter |
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