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参数资料
| 型号： | LTC3453EUF#PBF |
| 厂商： | Linear Technology |
| 文件页数： | 4/12页 |
| 文件大小： | 0K |
| 描述： | IC LED DRIVER PHOTO FLASH 16-QFN |
| 标准包装： | 91 |
| 拓扑： | PWM，降压（降压），升压（升压） |
| 输出数： | 4 |
| 内部驱动器： | 是 |
| 类型 - 主要： | 闪灯/白光 |
| 类型 - 次要： | 白色 LED |
| 频率： | 900kHz ~ 1.1MHz |
| 电源电压： | 2.7 V ~ 5.5 V |
| 输出电压： | 4.5V |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-WQFN 裸露焊盘 |
| 供应商设备封装： | 16-QFN（4x4） |
| 包装： | 管件 |
| 工作温度： | -40°C ~ 85°C |
LTC3453
TYPICAL PERFOR A CE CHARACTERISTICS
Efficiency vs LED Current
Output Voltage Ripple
Startup Transient
100
90
FRONT PAGE APPLICATION
P LED /P IN , V IN = 3.6V, T A = 25 ° C
CH1, V OUT
2V/DIV
80
70
20mV/DIV
AC COUPLED
0V
CH2, EN1
1V/DIV
0V
60
5 μ s/DIV
3453 G08
1ms/DIV
3453 G09
FRONT PAGE APPLICATION
FRONT PAGE APPLICATION
50
100 150 200 250 300 350 400 450 500
LED CURRENT (mA)
3453 G07
PI FU CTIO S
V IN = 3.6V
I LED = 150mA
V IN = 3.6V
I LED = 150mA
V IN (Pin 1): Signal Voltage Input Supply Pin [2.7V ≤ V IN ≤
5.5V]. Recommended bypass capacitor to GND is 2.2 μ F
ceramic or larger. Connect to PV IN (Pin 16).
EN1 (Pin 2): Enable Input Pin for I SET1 Current.
I SET1 (Pin 3): White Led Current Programming Pin. A
resistor to ground programs each current source output to
I LED = 384(0.8V/R ISET1 ). This amount of current adds to
any amount set by EN2/I SET2 if also used.
LED1 to LED4 (Pins 4, 6, 7, 9): Individual Low Dropout
Current Source Outputs for White LED Current Biasing.
Connect each white LED between V OUT and an individual
LEDx pin. Unused LEDx outputs should be connected to
V OUT .
GND (Pins 5 and 8): Signal Ground Pin. Connect to PGND
(Exposed Pad).
I SET2 (Pin 10): White Led Current Programming Pin. A
resistor to ground programs each current source output to
I LED = 384(0.8V/R ISET2 ). This amount of current adds to
EN2 (Pin 11): Enable Input Pin for I SET2 Current.
V C (Pin 12): Compensation Point for the Internal Error
Amplifier Output. Recommended compensation capacitor
to GND is 0.1 μ F ceramic or larger.
V OUT (Pin 13): Buck-Boost Output Pin. Recommended
bypass capacitor to GND is 4.7 μ F ceramic.
SW2 (Pin 14): Switching Node Pin. Connected to internal
power switches C and D. External inductor connects
between SW1 and SW2. Recommended value is 4.7 μ H.
SW1 (Pin 15): Switching Node Pin. Connected to internal
power switches A and B. External inductor connects
between SW1 and SW2. Recommended value is 4.7 μ H.
PV IN (Pin 16): Power Voltage Input Supply Pin. Connect to
V IN (Pin 1).
Exposed Pad (Pin 17): Power Ground Pin. Connect to
GND (Pin 8) and solder to PCB ground for optimum
thermal performance.
any amount set by EN1/I SET1 if also used.
3453fa
4
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相关代理商/技术参数 |
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| LTC3454 | 制造商:LINER 制造商全称:Linear Technology 功能描述:1A Synchronous Buck-Boost High Current LED Driver |
| LTC3454EDD | 制造商:LINER 制造商全称:Linear Technology 功能描述:1A Synchronous Buck-Boost High Current LED Driver |
| LTC3454EDD#PBF | 功能描述:IC LED DRIVER PHOTO FLASH 10-DFN 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 |
| LTC3454EDD#TRPBF | 功能描述:IC LED DRIVER PHOTO FLASH 10-DFN 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 |
| LTC3454EDDPBF | 制造商:Linear Technology 功能描述:LED Driver 1A Buck-Boost 3.3/5V DFN10EP |
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