收藏本站
SC4539
Electrical Characteristics (continued)
Parameter
Symbol
Conditions
Min
Typ
Max
Units
Boost Converter Characteristics (continued)
Switch Leakage Current
Switch Saturation Voltage
I L(LX)
V SAT
V LX = 5.5V
I LX = 0.3A
0.01
250
1
450
μA
mV
COMP Sourcing Current
COMP Sinking Current
I COMP
V COMP = 0.9V, T A = 25oC
V COMP = 0.9V, T A = 25oC
5
6
μA
OUT Over-Voltage Protection
OUT Internal Pull-Down Current
V OVP
I OVP
During OVP condition
22
1
25
V
mA
OUT Bias Current
V EN = V IN , V OUT = 20V
50
70
μA
I OUT
OUT Leakage Current
V EN = 0V, V OUT = V IN = 5.5V
0.01
1
μA
PWM Dimming Frequency Range (1)(2)
PWM Dimming Duty Cycle Range (1)(2)
f EN
D EN
Applied to EN pin
200Hz on EN pin
100
0
50k
100
Hz
%
Current Sink Characteristics
BL Current Setting Range (3)
1
30
mA
I BL
BL Current Setting Accuracy
T A = 25°C
-3.5
3.5
%
BL Leakage Current
BL Current Line Regulation
BL Voltage
ISET Bias Voltage
ISET-to-I BL Gain
Start-Up Time
I L(BL)
ΔI BL /ΔV IN
V BL
V ISET
A ISET
t start-up
V EN = 0V, V BL = 2V
V IN = 3.0 to 5.5V
0.01
±0.05
0.35
0.5
230
1.3
0.1
μA
mA/V
V
V
A/A
μs
Notes:
(1) Guaranteed by design.
(2) See PWM Dimming description in the Applications Information section for limitations at high PWM dimming frequencies and low PWM
dimming duty cycles.
(3) Not recommended to program below 1mA with R ISET due to tolerance stackup. To produce output current less than 1mA, set the current >
1mA and use PWM dimming.
4
发布紧急采购，3分钟左右您将得到回复。

采购需求

(若只采购一条型号，填写一行即可)

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

*型号 *数量 厂商 批号 封装
添加更多采购

我的联系方式

*
*
*
相关PDF资料
SC4540ULTRT IC LED DRIVR CONST CURRENT 8MLPD
SC4541SKTRT IC LED DRVR BACKLIGHT SOT23-6
SC5010ULTRT IC LED DRVR BACKLIGHT I2C 28QFN
SC600BIMLTRT IC LED DRIVR WHITE BCKLGT 10-MLP
SC618ULTRT IC LED DRIVER PHOTO FLASH 10-MLP
SC620ULTRT IC LED DRIVER LINEAR 16-MLPQ
SC628AULTRT IC LED DRIVER
SC667ULTRT IC LED DRVR LMU 7CH MLPQUT20
相关代理商/技术参数
SC453EVB 制造商:SEMTECH 制造商全称:Semtech Corporation 功能描述:Portable, VID Programmed Single Phase Power Supply Controller
SC453MLTRT 制造商:SEMTECH 制造商全称:Semtech Corporation 功能描述:Portable, VID Programmed Single Phase Power Supply Controller
SC453TS.TRT 制造商:SEMTECH 功能描述:I.C.
SC453TSTRT 制造商:Semtech Corporation 功能描述:Power Supply Controller 28-Pin TSSOP T/R
SC454 制造商:SEMTECH 制造商全称:Semtech Corporation 功能描述:Single-Phase Single Chip IMVP-6/6+ Vcore Power Supply
SC454_09 制造商:SEMTECH 制造商全称:Semtech Corporation 功能描述:Single-Phase Single Chip IMVP-6/6+ Vcore Power Supply
SC4540 制造商:SEMTECH 制造商全称:Semtech Corporation 功能描述:High Effi ciency Boost Converter for up to 10 LEDs
SC4540EVB 制造商:SEMTECH 制造商全称:Semtech Corporation 功能描述:High Effi ciency Boost Converter for up to 10 LEDs