参数资料
型号: A8516ELPTR-T
厂商: Allegro Microsystems Inc
文件页数: 5/17页
文件大小: 0K
描述: IC LED DVR BACKLIGHT MON 24TSSOP
标准包装: 8,000
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: 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)裸露焊盘
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
A8516
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
160
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
1.0
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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