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参数资料
| 型号： | A8512ELPTR-T |
| 厂商： | Allegro Microsystems Inc |
| 文件页数： | 5/18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 Valid at V IN = 12 V; T A = 25°C, R FSET = 52 k Ω , R ISET = 12.4 k Ω , except
specifications guaranteed over the full operating temperature range with T A = T J , unless otherwise noted
indicates
Characteristics
Input Voltage Range
Internal Bias Voltage Range
Internal Gate Driver Voltage
Undervoltage Lockout Threshold for V IN
Undervoltage Lockout Hysteresis for V IN
Supply Current 2
Symbol
V IN
V BIAS
V DRIVER
V UVLO
V UVLOHYS
I VIN
Test Conditions
V IN ≥ 10 V
V IN falling
Switching at no load
Shutdown, EN = V IL , T A = 25°C
Standby, EN = V IH , PWM = V IL , soft start
completed
Min.
8
4.75
6.5
5.7
–
–
–
–
Typ. 1
–
–
–
6.5
0.55
7
0.1
2
Max.
24
5.5
8
6.8
–
–
1
3
Unit
V
V
V
V
V
mA
μ A
mA
Boost Controller
Switching Frequency
f SW
0.8
1
1.25
MHz
Minimum Switch Off-Time
Minimum Switch On-Time
t off(min)
t on(min)
Driver output
Driver output
–
–
72
72
–
–
ns
ns
Logic Input Levels (EN and PWM pins)
Input Voltage Level Low
Input Voltage Level High
V IL
V IH
–
1.5
–
–
0.4
–
V
V
Input Leakage Current 2
I IN
EN = PWM = 5 V
–
100
–
μ A
Error Amplifier
COMP Pin Source Current
COMP Pin Sink Current
COMP Pin Pull-Down Resistance
I EA(src)
I EA(snk)
R COMPPD
V COMP = 1.5 V
V COMP = 1.5 V
ˉFˉ ˉA ˉ ˉUˉˉLˉ ˉTˉ = 0
–
–
–
160
20
1000
–
–
–
μ A
μ A
k Ω
Driver Section
Peak Source Current 5
Peak Sink Current 5
High Side Gate Drive On Resistance
Low Side Gate Drive On Resistance
Sense Overcurrent Threshold Voltage
I pk(src)
I pk(snk)
R DS(on)H
R DS(on)L
V SEN
Measured at V DRIVER = 0 V
Measured at V DRIVER = V REG7V
Measured at V DRIVER = V REG7V / 2
Measured at V DRIVER = V REG7V / 2
V SENSE1 – V SENSE2
–
–
–
–
80
2
2
4
3
95
–
–
–
–
110
A
A
Ω
Ω
mV
LED Current Sinks
LEDx Pin Regulation Voltage
I SET to I LEDx Current Gain
ISET Pin Voltage
V LEDx
A ISET
V ISET
I LED = 80 mA
I SET = 100 μ A
–
–
–
1.4
640
1.235
–
–
–
V
A/A
V
I SET Allowable Current
Range 2
I SET
41
–
190
μ A
Continued on the next page…
Allegro MicroSystems, LLC
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
5
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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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