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参数资料
| 型号： | A8512ELPTR-T |
| 厂商： | Allegro Microsystems Inc |
| 文件页数： | 6/18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
ELECTRICAL CHARACTERISTICS (continued) Valid at V IN = 12 V; T A = 25°C, R FSET = 52 k Ω , R ISET = 12.4 k Ω , except
indicates specifications guaranteed over the full operating temperature range with T A = T J , unless otherwise noted
Characteristics
LEDx Accuracy 3
LEDx Matching 4
Symbol
Err ILEDX
Δ I LEDX
Test Conditions
LED1 through LED6 = 1.5 V, at 100% Current
LED1 through LED6 = 1.5 V, I SET = 100 μ A
Min.
–3
–3
Typ. 1
±0.6
±0.6
Max.
3
3
Unit
%
%
LEDx Switch Leakage
Current 2
I SL
V LEDx = 12 V, EN = 0
–
48
–
μ A
LEDx Bleeder Resistor to GND
R LEDX
PWM = Low, V LEDx = 10 V
–
250
–
k Ω
Soft Start
Soft Start Sense Threshold Voltage
Soft Start LEDx Current Limit Relative to LED
100% Current
V SENS
I LED(SS)
Sense voltage for boost switch current
sensing
Current through enabled LEDx pins during
soft start
–
–
28.5
8
–
–
mV
%
Protection Features
Thermal Shutdown Threshold
Short Circuit Detect Voltage
Output Overvoltage Threshold
T TSD
V SC
V OVP
T J rising
Measured on any LEDx pin
R OVP = 0
–
–
18.0
165
25
19.5
–
–
21.0
°C
V
V
OVP Pin Leakage
Current 2
I OVPLK
V OVP = 22 V, EN = V IL , or PWM=V IL
–
0.1
–
μ A
Overvoltage Protection Sense Current 2
I OVPH
183
200
217
μ A
ˉFˉ ˉA ˉ ˉUˉˉLˉ ˉTˉ Pin Output Leakage 2
ˉFˉ ˉA ˉ ˉUˉˉLˉ ˉTˉ Pin Output Voltage
I FLT
V OL
V=5V
I = 500 μ A
–
–
–
–
1
0.4
μ A
V
1 Typical specifications are at T A = 25oC.
2 For input and output current specifications, negative current is defined as coming out of the node or pin (sourcing), positive current is defined as going
into the node or pin (sinking).
3 LED accuracy is defined as (I SET × 640 – I LED (av)) / (I SET × 640), I LED (av) measured as the average of I LED1 through I LED6 . Refer to characterization
chart for variation over temperature range.
4 LED current matching is defined as (I
temperature range.
LEDx – I LED (av)) / I LED (av), with I LED (av) as defined in footnote 3. Refer to characterization chart for variation over
5 Guaranteed by design and characterization.
Variation of Total LED Current versus Ambient Temperature
100% Current = 64 mA per channel at 25°C
101.0
100.5
100.0
99.5
99.0
98.5
98.0
-60
-40
-20
0
20 40 60
80
100
Temperature, T A (°C)
Allegro MicroSystems, LLC
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
6
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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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