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LM3530UME-40B/NOPB PDF预览

LM3530UME-40B/NOPB

更新时间： 2023-09-03 20:29:14
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德州仪器 - TI 驱动驱动器
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具有可编程环境光感应功能的高效白光 LED 驱动器 | YFZ | 12

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LM3530UME-40B/NOPB 数据手册

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LM3530  
SNVS606L –JUNE 2009–REVISED DECEMBER 2014  
LM3530 High-Efficiency White-LED Driver with Programmable Ambient Light Sensing  
Capability and I2C-Compatible Interface  
1 Features  
3 Description  
The LM3530 current mode boost converter supplies  
the power and controls the current in up to 11 series  
white LEDs. The 839-mA current limit and 2.7-V to  
5.5-V input voltage range make the device a versatile  
backlight power source ideal for operation in portable  
applications.  
1
•
•
•
•
Drives up to 11 LEDs in series  
1000:1 Dimming Ratio  
90% Efficient  
Programmable Dual Ambient Light Sensor Inputs  
with Internal ALS Voltage Setting Resistors  
•
•
•
I2C Programmable Logarithmic or Linear  
Brightness Control  
The LED current is adjustable from 0 mA to 29.5 mA  
via an I2C-compatible interface. The 127 different  
current steps and 8 different maximum LED current  
levels give over 1000 programmable LED current  
levels. Additionally, PWM brightness control is  
possible through an external logic level input.  
External PWM Input for Simple Brightness  
Adjustment  
True Shutdown Isolation for LEDs and Ambient  
Light Sensors  
The device also features two Ambient Light Sensor  
inputs. These are designed to monitor analog output  
ambient light sensors and provide programmable  
adjustment of the LED current with changes in  
ambient light. Each ambient light sensor input has  
independently programmable internal voltage setting  
resistors which can be made high impedance to  
reduce power during shutdown. The 500-kHz  
switching frequency allows for high converter  
•
•
•
•
•
Internal Soft-Start Limits Inrush Current  
Wide 2.7-V to 5.5-V Input Voltage Range  
40-V and 25-V Overvoltage Protection Options  
500-kHz Fixed Frequency Operation  
839-mA Peak Current Limit  
2 Applications  
efficiency over  
a
wide output voltage range  
•
•
•
Smartphone LCD Backlighting  
accommodating from 2 to 11 series LEDs. Finally, the  
support of Content Adjusted Backlighting maximizes  
battery life while maintaining display image quality.  
Personal Navigation LCD Backlighting  
2 to 11 Series White-LED Backlit Display Power  
Source  
The LM3530 operates over the −40°C to 85°C  
temperature range.  
space  
Device Information(1)  
PART NUMBER  
LM3530  
PACKAGE  
BODY SIZE (MAX)  
DSBGA (12)  
1.64 mm x 1.24 mm  
(1) For all available packages, see the orderable addendum at  
the end of the datasheet.  
Simplified Schematic  
L
D1  
Up to 40V  
2.7V to 5.5V  
C
OUT  
SW  
V
IN  
LOGIC  
C
IN  
10 k:  
10 k: 10 k:  
10 k:  
LM3530  
SCL  
SDA  
OVP  
HWEN  
INT  
PWM  
ILED  
VIN  
VIN  
Ambient Light  
Sensor  
Ambient Light  
Sensor  
ALS1  
ALS2  
GND  
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,  
intellectual property matters and other important disclaimers. PRODUCTION DATA.  
 
 
 
 
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LM3530UME-40B/NOPB 替代型号

型号 品牌 替代类型 描述 数据表
LM3530UMX-40B/NOPB TI

完全替代

 具有可编程环境光感应功能的高效白光 LED 驱动器 | YFZ | 12

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LM3530UMX-25ANOPB NSC

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 		IC LED DISPLAY DRIVER, PBGA12, 1.215 X 1.615 MM, 0.425 MM HEIGHT, USMD-12, Display Driver
LM3530UMX-40/NOPB TI

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 		具有可编程环境光感应功能的高效白光 LED 驱动器 | YFZ | 12 | -30 to
LM3530UMX-40B/NOPB TI

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 		具有可编程环境光感应功能的高效白光 LED 驱动器 | YFZ | 12
LM3530UMX-40BNOPB NSC

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 		IC LED DISPLAY DRIVER, PBGA12, 1.215 X 1.615 MM, 0.425 MM HEIGHT, USMD-12, Display Driver
LM3530UMX-40NOPB NSC

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 		IC LED DISPLAY DRIVER, PBGA12, 1.215 X 1.615 MM, 0.425 MM HEIGHT, USMD-12, Display Driver
LM3532 TI

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 		High Efficiency White LED Driver with Programmable Ambient Light Sensing Capability and I2
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