- 您现在的位置：买卖IC网 > Datasheet目录338 > LTC3454EDD#TRPBF (Linear Technology)IC LED DRIVER PHOTO FLASH 10-DFN Datasheet资料下载
参数资料
| 型号： | LTC3454EDD#TRPBF |
| 厂商： | Linear Technology |
| 文件页数： | 5/12页 |
| 文件大小： | 0K |
| 描述： | IC LED DRIVER PHOTO FLASH 10-DFN |
| 标准包装： | 2,500 |
| 拓扑： | PWM，降压（降压），升压（升压） |
| 输出数： | 1 |
| 内部驱动器： | 是 |
| 类型 - 主要： | 背光，闪灯/白光 |
| 类型 - 次要： | 白色 LED |
| 频率： | 900kHz ~ 1.15MHz |
| 电源电压： | 2.7 V ~ 5.5 V |
| 输出电压： | 5.15V |
| 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 |
LTC3454
TYPICAL PERFORMANCE CHARACTERISTICS
Oscillator Frequency vs Temperature
LED Power Ef?ciency vs LED Current
1100
1080
V OUT = 3V
100
95
1060
1040
1020
1000
V IN = 4.2V
V IN = 5.5V
90
85
80
V IN = 3.6V
980
960
940
920
V IN = 3.6V
V IN = 2.7V
75
70
T A = 25°C
65 EFFICIENCY = (V OUT – V LED )I LED /V IN I IN
FRONT PAGE APPLICATION
900
–55 –35 –15
5
25
45
65
85 105 125
60
100 200 300 400 500 600 700 800 900 1000
TEMPERATURE (°C)
Output Voltage Ripple
Back Page Application
3454 G16
I LED (mA)
Start-Up Transient
Back Page Application
3454 G17
CH1, V OUT
1V/DIV
CH2, I LED
500mA
20mV/DIV
0V, 0A
0V
FINAL VALUE
CH3, V EN1
1V/DIV
V IN = 3.6V
I LED = 500mA
500ns/DIV
3454 G19
V IN = 3.6V
I LED = 500mA
5ms/DIV
3454 G19
PIN FUNCTIONS
EN1 (Pin 1): Enable Input Pin for I SET1 Current.
EN2 (Pin 2): Enable Input Pin for I SET2 Current.
I SET1 (Pin 3): LED Current Programming Pin. A resistor
to ground programs the current through the LED to I LED
= 3850(0.8V/R ISET1 ). This amount of current adds to any
amount set by EN2/I SET2 if used.
I SET2 (Pin 4): LED Current Programming Pin. A resistor
to ground programs the current through the LED to I LED
= 3850(0.8V/R ISET2 ). This amount of current adds to any
amount set by EN1/I SET1 if used.
LED (Pin 5): Low Dropout Output for LED Current Biasing.
Connect the LED between V OUT and the LED pin.
SW2 (Pin 6): Switching Node. External inductor con-
nects between SW1 and SW2. Recommended value is
4.7μH/5μH.
V OUT (Pin 7): Buck-Boost Output Rail. Bypass to GND with
a ceramic capacitor. Recommended value is 10μF.
V C (Pin 8): Compensation Point for the Internal Error
Ampli?er Output. Connect a ceramic capacitor from V C
to GND. Recommended value is 0.1μF.
V IN (Pin 9): Voltage Input Supply Pin (2.7V ≤ V IN ≤ 5.5V).
Bypass to GND with a ceramic capacitor. Recommended
value is 10μF.
SW1 (Pin 10): Switching Node. External inductor con-
nects between SW1 and SW2. Recommended value is
4.7μH/5μH.
Exposed Pad (Pin 11): Ground Pin. Solder to PCB ground
for electrical contact and optimal thermal performance.
3454fa
5
相关PDF资料 |
PDF描述 |
|---|---|
| LTC3490EDD#PBF | IC LED DRIVER PHOTO FLASH 8-DFN |
| LTC3783EFE#PBF | IC LED DRVR PWM CONTROL 16-TSSOP |
| LV5026MC-AH | IC LED DRIVER 1CH HV 10SOIC |
| LV5213LP-TE-L-E | IC LED DVR 3CH CELL PHONE VCT16 |
| LV5216CS-TE-L-E | IC LED DRIVER 10CH CELL 36WLP |
相关代理商/技术参数 |
参数描述 |
|---|---|
| LTC3455 | 制造商:LINER 制造商全称:Linear Technology 功能描述:High Efficiency Battery Charger/USB Power Manager |
| LTC3455EUF | 功能描述:IC CONV DC/DC DUAL USBBATT 24QFN RoHS:否 类别:集成电路 (IC) >> PMIC - 电源管理 - 专用 系列:- 标准包装:1 系列:- 应用:手持/移动设备 电流 - 电源:- 电源电压:3 V ~ 5.5 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:14-WFDFN 裸露焊盘 供应商设备封装:14-LLP-EP（4x4） 包装:Digi-Reel® 配用:LP3905SD-30EV-ND - BOARD EVALUATION LP3905SD-30 其它名称:LP3905SD-30DKR |
| LTC3455EUF#PBF | 功能描述:IC CONV DC/DC DUAL USBBATT 24QFN RoHS:是 类别:集成电路 (IC) >> PMIC - 电源管理 - 专用 系列:- 标准包装:1 系列:- 应用:手持/移动设备 电流 - 电源:- 电源电压:3 V ~ 5.5 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:14-WFDFN 裸露焊盘 供应商设备封装:14-LLP-EP（4x4） 包装:Digi-Reel® 配用:LP3905SD-30EV-ND - BOARD EVALUATION LP3905SD-30 其它名称:LP3905SD-30DKR |
| LTC3455EUF#TR | 功能描述:IC CONV DC/DC DUAL USBBATT 24QFN RoHS:否 类别:集成电路 (IC) >> PMIC - 电源管理 - 专用 系列:- 标准包装:1 系列:- 应用:手持/移动设备 电流 - 电源:- 电源电压:3 V ~ 5.5 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:14-WFDFN 裸露焊盘 供应商设备封装:14-LLP-EP（4x4） 包装:Digi-Reel® 配用:LP3905SD-30EV-ND - BOARD EVALUATION LP3905SD-30 其它名称:LP3905SD-30DKR |
| LTC3455EUF#TRPBF | 功能描述:IC CONV DC/DC DUAL USBBATT 24QFN RoHS:是 类别:集成电路 (IC) >> PMIC - 电源管理 - 专用 系列:- 标准包装:1 系列:- 应用:手持/移动设备 电流 - 电源:- 电源电压:3 V ~ 5.5 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:14-WFDFN 裸露焊盘 供应商设备封装:14-LLP-EP（4x4） 包装:Digi-Reel® 配用:LP3905SD-30EV-ND - BOARD EVALUATION LP3905SD-30 其它名称:LP3905SD-30DKR |
发布紧急采购，3分钟左右您将得到回复。