LTC3217
ELECTRICAL CHARACTERISTICS The l denotes the speci?cations which apply over the full operating
temperature range, otherwise speci?cations are at T A = 25°C. V BAT = 3.6V, C1 = C2 = C3 = C4 = 2.2μF, unless otherwise noted.
CPO Short Circuit Detection
Threshold Voltage
0.4
1.3
V
Test Current
CPO = 0V, EN1 = EN2 = Low
10
30
mA
Unused LED Detection
Threshold Voltage
Test Current
V CPO – LED
LED Tied to CPO
0.5
4
1.5
16
V
μA
EN1, EN2
Low Level Input Voltage (V IL )
High Level Input Voltage (V IH )
1.4
0.4
V
V
Input Current (I IH )
Input Current (I IL )
7
–1
30
1
μA
μA
Minimum PWM On-Time
Maximum PWM Off-Time
EN2 Only
EN2 to Remain Enabled, EN1 = Low
50
1
μs
ms
I SET1 , I SET2
V ISET1 , ISET2
I ISET1 , ISET2 Current Range
I LED1-4 = 12.5mA
1.175
31.25
1.215
1.255
375
V
μA
I ISET1 , ISET2 Short-Circuit Current
800
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 2: Based on charge pump 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 300mA.
Note 3: Based on LED current source 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 100mA.
Note 4: The LTC3217E 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: 1.5x mode output impedance is de?ned as (1.5V BAT – V CPO )/I OUT .
2x mode output impedance is de?ned as (2V BAT – V CPO )/I OUT .
TYPICAL PERFORMANCE CHARACTERISTICS
T A = 25°C unless otherwise noted.
LED Dropout Voltage
LED Pin Current
vs LED Current
vs LED Pin Voltage
I LED vs R ISET
400
V BAT = 3.6V
120
V BAT = 3.6V
120
300
100
80
100
80
200
100
60
40
20
60
40
20
0
10 20
30
40 50
60 70 80
90 100
0
0
0.2
0.4 0.6 0.8
1.0
0
0
5
10 15 20 25 30 35 40 45 50
LED CURRENT (mA)
3217 G01
LED PIN VOLTAGE (V)
3217 G02
R ISET (kΩ)
3217 G03
3217fa
3
相关PDF资料
LTC3218EDDB#TRPBF IC LED DRVR FLASH TORCH 10DFN
LTC3219EUD#PBF IC LED DRIVR QVGA DISPLAY 20-QFN
LTC3220EPF#PBF IC LED DRVR QVGA DISPLAY 28UTQFN
LTC3230EUD#PBF IC LED DRIVR WHITE BCKLGT 20-QFN
LTC3452EUF#TRPBF IC LED DRIVER PHOTO FLASH 20-QFN
LTC3453EUF#TRPBF IC LED DRIVER PHOTO FLASH 16-QFN
LTC3454EDD#TRPBF IC LED DRIVER PHOTO FLASH 10-DFN
LTC3490EDD#PBF IC LED DRIVER PHOTO FLASH 8-DFN
相关代理商/技术参数
LTC3218 制造商:LINER 制造商全称:Linear Technology 功能描述:400mA Single Wire Camera LED Charge Pump
LTC3218EDDB#PBF 制造商:Linear Technology 功能描述:DP-Charge Pump/LED Driver, CUT TAPE 400mA, Single Wire Camera LED Charge Pump
LTC3218EDDB#TRMPBF 功能描述:IC LED DRVR FLASH TORCH 10DFN RoHS:是 类别:集成电路 (IC) >> PMIC - LED 驱动器 系列:- 标准包装:6,000 系列:- 恒定电流:- 恒定电压:- 拓扑:开路漏极,PWM 输出数:4 内部驱动器:是 类型 - 主要:LED 闪烁器 类型 - 次要:- 频率:400kHz 电源电压:2.3 V ~ 5.5 V 输出电压:- 安装类型:表面贴装 封装/外壳:8-VFDFN 裸露焊盘 供应商设备封装:8-HVSON 包装:带卷 (TR) 工作温度:-40°C ~ 85°C 其它名称:935286881118PCA9553TK/02-TPCA9553TK/02-T-ND
LTC3218EDDB#TRPBF 功能描述:IC LED DRVR FLASH TORCH 10DFN RoHS:是 类别:集成电路 (IC) >> PMIC - LED 驱动器 系列:- 标准包装:6,000 系列:- 恒定电流:- 恒定电压:- 拓扑:开路漏极,PWM 输出数:4 内部驱动器:是 类型 - 主要:LED 闪烁器 类型 - 次要:- 频率:400kHz 电源电压:2.3 V ~ 5.5 V 输出电压:- 安装类型:表面贴装 封装/外壳:8-VFDFN 裸露焊盘 供应商设备封装:8-HVSON 包装:带卷 (TR) 工作温度:-40°C ~ 85°C 其它名称:935286881118PCA9553TK/02-TPCA9553TK/02-T-ND
LTC3218EDDBPBF 制造商:LINER 制造商全称:Linear Technology 功能描述:400mA Single Wire Camera LED Charge Pump
LTC3218EDDBTRPBF 制造商:LINER 制造商全称:Linear Technology 功能描述:400mA Single Wire Camera LED Charge Pump
LTC3219 制造商:LINER 制造商全称:Linear Technology 功能描述:250mA Universal Nine Channel LED Driver
LTC3219EUD#PBF 功能描述:IC LED DRIVR QVGA DISPLAY 20-QFN RoHS:是 类别:集成电路 (IC) >> PMIC - LED 驱动器 系列:- 标准包装:60 系列:- 恒定电流:- 恒定电压:- 拓扑:线性(LDO),PWM,升压(升压) 输出数:8 内部驱动器:是 类型 - 主要:背光 类型 - 次要:RGB,白色 LED 频率:500kHz ~ 1.5MHz 电源电压:4.75 V ~ 26 V 输出电压:45V 安装类型:* 封装/外壳:* 供应商设备封装:* 包装:* 工作温度:-40°C ~ 85°C