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参数资料
| 型号： | A8512ELPTR-T |
| 厂商： | Allegro Microsystems Inc |
| 文件页数： | 7/18页 |
| 文件大小： | 0K |
| 描述： | IC LED DVR WHT/RGB BKLGT 24TSSOP |
| 标准包装： | 8,000 |
| 拓扑： | 高端，低端，PWM，升压（升压） |
| 输出数： | 6 |
| 内部驱动器： | 无 |
| 类型 - 主要： | 背光 |
| 类型 - 次要： | RGB，白色 LED |
| 频率： | 300kHz ~ 1MHz |
| 电源电压： | 8 V ~ 24 V |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 24-TSSOP（0.173"，4.40mm 宽） |
| 供应商设备封装： | 24-TSSOP 裸露焊盘 |
| 包装： | 带卷 (TR) |
| 工作温度： | -40°C ~ 85°C |
A8512
LED Backlight Driver for LCD Monitors and Televisions
Characteristic Performance
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Efficiency versus Battery Voltage
for Various LED Configurations
FET = IRFR120N, V IN = 12 V, f SW = 500 kHz
L = 22 μ H, Load = W92050C LEDs at 112 mA per string
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Efficiency versus Battery Voltage
for Various LED Configurations
FET = FQB17N08L, V IN = 12 V, f SW = 500 kHz
L = 22 μ H, Load = W92050C LEDs at 112 mA per strin
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3 strings 18 LEDs per string
V OUT ≈ 60 V, P OUT ≈ 20.2 W
2 strings 18 LEDs per string
V OUT ≈ 60 V, P OUT ≈ 13.4 W
3 strings 14 LEDs per string
V OUT ≈ 47 V, P OUT ≈ 15.8 W
2 strings 14 LEDs per string
V OUT ≈ 47 V, P OUT ≈ 10.5 W
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3 strings 18 LEDs per string
V OUT ≈ 60 V, P OUT ≈ 20.2 W
2 strings 18 LEDs per string
V OUT ≈ 60 V, P OUT ≈ 13.4 W
3 strings 14 LEDs per string
V OUT ≈ 47 V, P OUT ≈ 15.8 W
2 strings 14 LEDs per string
V OUT ≈ 47 V, P OUT ≈ 10.5 W
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V BAT (V)
Efficiency of the boost converter stage is affected by the selection of
power MOSFET, switching frequency, input/output voltages, and output
power. The external MOSFET used for the above chart is the IRFR120N,
which has a relatively high R DS(on) = 0.21 Ω . This causes higher
conduction loss, especially at lower input voltage.
V BAT (V)
The power MOSFET is replaced with FQB17N08L, which has a lower
R DS(on) = 0.115 Ω . This results in less conduction loss at lower input
voltage, however, the switching loss becomes more significant at higher
input voltage.
Switching Frequency versus FSET Resistor Value
f SW (MHz) = 52 / R FSET (k Ω )
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R FSET (k Ω )
Allegro MicroSystems, LLC
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
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| A8513 | 制造商:ALLEGRO 制造商全称:Allegro MicroSystems 功能描述:Wide Input Voltage Range, High Efficiency Fault Tolerant LED Driver |
| A8513KLPTR-1-T | 制造商:ALLEGRO 制造商全称:Allegro MicroSystems 功能描述:Wide Input Voltage Range, High Efficiency Fault Tolerant LED Driver |
| A8513KLPTR-2-T | 制造商:ALLEGRO 制造商全称:Allegro MicroSystems 功能描述:Wide Input Voltage Range, High Efficiency Fault Tolerant LED Driver |
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| A8513KLPTR-T | 功能描述:IC LED DRVR AUTO BCKLGHT 16TSSOP RoHS:是 类别:集成电路 (IC) >> PMIC - LED 驱动器 系列:- 特色产品:LM3445 TRIAC Dimmable LED Driver 标准包装:55 系列:PowerWise® 恒定电流:是 恒定电压:- 拓扑:PWM，降压（降压） 输出数:1 内部驱动器:无 类型 - 主要:- 类型 - 次要:高亮度 LED（HBLED） 频率:30kHz ~ 1MHz 电源电压:8 V ~ 12 V 输出电压:- 安装类型:表面贴装 封装/外壳:14-SOIC（0.154"，3.90mm 宽） 供应商设备封装:14-SOICN 包装:管件 工作温度:-40°C ~ 125°C 产品目录页面:1285 (CN2011-ZH PDF) 其它名称:LM3445M |
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