参数资料
型号: A8507ELBTR-T
厂商: Allegro Microsystems Inc
文件页数: 4/17页
文件大小: 0K
描述: IC DRIVER WLED/RGB 24-SOIC
标准包装: 3,000
拓扑: PWM,升压(升压)
输出数: 6
内部驱动器:
类型 - 主要: 背光
类型 - 次要: RGB,白色 LED
频率: 250kHz ~ 1MHz
电源电压: 4.3 V ~ 5.5 V
安装类型: 表面贴装
封装/外壳: 24-SOIC(0.295",7.50mm 宽)
供应商设备封装: 24-SOIC W
包装: 带卷 (TR)
工作温度: -40°C ~ 85°C
A8507
LED Backlight Driver for LCD Monitors and Televisions
Pin-out Diagrams
PWM 1
PGND 2
NC 3
NC 4
SENN 5
24 EN
23 FAULT
22 LED6
21 LED5
20 LED4
GND 1
PWM 2
NC 3
PGND 4
NC 5
24 EN
23 FAULT
22 LED6
21 LED5
20 LED4
GND 6
GND 7
SENP 8
OVP 9
DRIVER 10
VIN 11
ISET 12
19 LGND
18 LGND
17 LED3
16 LED2
15 LED1
14 COMP
13 FSET
SENN 6
SENP 7
OVP 8
NC 9
DRIVER 10
VIN 11
ISET 12
PAD
19 LGND
18 LED3
17 LED2
16 LED1
15 COMP
14 FSET
13 GND
Package LB
Terminal List Table
Package LP
LB
1
2
3,4
5
6,7
8
Number
LP
2
4
3,5,9
6
1,13
7
Name
PWM
PGND
NC
SENN
GND
SENP
Function
PWM LED-current control; apply logic level PWM for dimming
Power ground for external FET gate driver; connect to common star ground and
R SC ground
No internal electrical connection to these pins
Connect ground side of current sense resistor R SC
Connect to common star ground
Connect high side of current sense resistor R SC
Connect this pin to output capacitor +ve node to enable overvoltage protection;
9
8
OVP
typical OVP level is 36 V, and this level can be increased by connecting through
an external resistor R OVP
10
11
12
13
14
15,16,17
18,19
20,21,22
23
24
10
11
12
14
15
16,17,18
19
20,21,22
23
24
PAD
DRIVER
VIN
ISET
FSET
COMP
LEDx
LGND
LEDx
ˉFˉ ˉA ˉ ˉUˉˉLˉ ˉTˉ
EN
PAD
Gate driver terminal to drive external MOSFET
Input supply for the IC; decouple with a 0.1 μ F ceramic capacitor
Sets 100% Current through LED strings; connect R ISET from ISET to GND
Sets switching frequency; connect R FSET from FSET to GND
Compensation pin; connect 1 μ F capacitor to GND or common star ground
LED sinks capable of 80 mA sink; connect unused LEDx pins to ground
Connect to common star ground
LED sinks capable of 80 mA sink; connect unused LEDx pins to ground
During normal operation, this pin is high (high impedance); at a fault event, this
pin pulls low
Device enable
Exposed pad for enhanced thermal dissipation, connect to common star ground
Allegro MicroSystems, LLC
115 Northeast Cutoff
3
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
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A8509 制造商:ROCKWE 功能描述:
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