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参数资料
| 型号： | A8515GLPTR-T |
| 厂商： | Allegro Microsystems Inc |
| 文件页数： | 1/34页 |
| 文件大小： | 0K |
| 描述： | IC LED DVR WHT/RGB BKLGT 16TSSOP |
| 标准包装： | 8,000 |
| 拓扑： | PWM，升压（升压） |
| 输出数： | 2 |
| 内部驱动器： | 是 |
| 类型 - 主要： | 背光 |
| 类型 - 次要： | 白色 LED |
| 频率： | 600kHz ~ 2.5MHz |
| 电源电压： | 5 V ~ 40 V |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-TSSOP（0.173"，4.40mm）裸露焊盘 |
| 供应商设备封装： | 16-TSSOP-EP |
| 包装： | 带卷 (TR) |
| 工作温度： | -40°C ~ 105°C |
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A8515
Wide Input Voltage Range, High Efficiency
Fault Tolerant LED Driver
Features and Benefits
? Wide input voltage range: 5 to 40 V
? Maximum LED current of 120 mA
? TSSOP-16 (LP) package; exposed pad offers best-in-class
thermal performance
? Typical LED accuracy of 0.5%, and 0.5% for
LED-to-LED matching
? Internal bias supply for single-supply operation (typically
between V IN = 8 to 24 V)
? Integrated boost converter with 60 V DMOS switch with
overvoltage protection (OVP)
? Drives up to 12 series LEDs in 2 parallel strings
? Single EN/PWM pin interface for both PWM dimming
and enable function
? Sync function to synchronize boost converter switching
frequencies up to 2.3 MHz, this gives the designer the
ability minimize component size
? Provides driver for external PMOS input disconnect switch
? Protection features:
? Open or shorted V LED pin protection
? Open Schottky protection
? Cycle-by-cycle current limit
? Overtemperature protection (OTP)
? Output short circuit protection
Package: 16-pin TSSOP with exposed
thermal pad (suffix LP)
Description
The A8515 is a multi-output white LED (WLED) driver for LCD
backlighting in consumer and industrial displays. It integrates
a current-mode boost converter with an internal power DMOS
switch and two current sinks. The boost converter can drive
up to 24 LEDs: 12 LEDs per string at 120 mA. The LED sinks
can be paralleled together to achieve higher LED currents,
up to 240 mA. The A8515 can operate from a single power
supply, from 5 to 40 V.
PWM dimming is implemented with an external PWM input
signal. The EN/PWM dimming pin is used to control the LED
intensity by using pulse width modulation.
The low, 720 mV regulation voltage on the LED current
sources reduces power loss and improves efficiency.
The A8515 is provided in a 16-pin TSSOP package (suffix LP)
with an exposed thermal pad. It is lead (Pb) free, with 100%
matte tin leadframe plating.
Applications
? Desktop LCD flat panel displays (FPD)
? Flat panel video displays
? LCD TVs and monitors
Not to scale
Typical Application Diagram
V IN 10 to 14 V
L1
10 μ H
D1
2 A / 60 V
V OUT
NC GATE
OVP
A8515
ISET
10 k Ω
C Z
C IN
4.7 μ F/ 50 V
V C
100 k Ω
R ISET
8.25 k Ω
0.1 μ F PAD
R FSET
SW
VSENSE
VIN
C VDD VDD
FAULT
EN/PWM
FSET
AGND PGND
APWM LED1
LED2
COMP
C OUT
R OVP 4.7 μ F
158 k Ω 50 V
10 LEDs
each string
R Z
C P 150 Ω
120 pF
0.47 μ F
Figure 1. Typical Application Circuit;
12 V input, output to 20 LEDs
(10 series LEDs in each of two
strings) at 120 mA each.
A8515-DS, Rev. 2
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| A8516ELPTR-T | 功能描述:IC LED DVR BACKLIGHT MON 24TSSOP RoHS:是 类别:集成电路 (IC) >> PMIC - LED 驱动器 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:- 恒定电流:- 恒定电压:- 拓扑:升压（升压），切换式电容器（充电泵） 输出数:1 内部驱动器:是 类型 - 主要:背光 类型 - 次要:白色 LED 频率:625kHz ~ 875kHz 电源电压:2.7 V ~ 5.3 V 输出电压:5V 安装类型:表面贴装 封装/外壳:10-TFSOP，10-MSOP（0.118"，3.00mm 宽） 供应商设备封装:10-µMAX 包装:带卷 (TR) 工作温度:-40°C ~ 85°C |
| A8517KLPTR-T | 功能描述:LED 驱动器 IC 10 输出 DC DC 稳压器 升压（升压） PWM 调光 60mA 28-TSSOP-EP 制造商:allegro microsystems, llc 系列:汽车级，AEC-Q100 包装:剪切带（CT） 零件状态:停产 类型:DC DC 稳压器 拓扑:升压（升压） 内部开关:是 输出数:10 电压 - 供电（最低）:4.5V 电压 -?供电（最高）:36V 电压 - 输出:- 电流 - 输出/通道:60mA 频率:400kHz ~ 2.3MHz 调光:PWM 应用:汽车级 工作温度:-40°C ~ 125°C（TA） 安装类型:表面贴装 封装/外壳:28-SOIC（0.173"，4.40mm 宽）裸露焊盘 供应商器件封装:28-TSSOP-EP 标准包装:1 |
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