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| 型号： | AOZ1977AI |
| 厂商： | Alpha & Omega Semiconductor Inc |
| 文件页数： | 1/16页 |
| 文件大小： | 0K |
| 描述： | IC LED DRVR BCKLGT 16SOIC |
| 标准包装： | 3,000 |
| 系列： | EZBoost™ |
| 拓扑： | PWM，升压（升压） |
| 输出数： | 1 |
| 内部驱动器： | 无 |
| 类型 - 主要： | 背光 |
| 类型 - 次要： | 高亮度 LED（HBLED） |
| 频率： | 50kHz ~ 300kHz |
| 电源电压： | 8 V ~ 30 V |
| 输出电压： | 16V |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-SOIC（0.154"，3.90mm 宽） |
| 供应商设备封装： | 16-SOIC |
| 包装： | 带卷 (TR) |
| 工作温度： | -40°C ~ 85°C |
AOZ1977
High Voltage LED Driver IC
General Description
The AOZ1977 is a high-efficiency LED driver controller
for high voltage LED backlighting applications. It is
designed to drive a high-brightness LED light bar in LED
TV applications. The AOZ1977 can support a wide range
of input and output voltages. The input bias voltage of the
AOZ1977 is from 8 V to 30 V.
The AOZ1977 has multiple features to protect the
regulator under fault conditions. A control pin can disable
an external switch to disconnect the LEDs current path
from the output in PWM dimming or under catastrophic
failure conditions. Cycle-by-cycle current protection limits
the peak inductor current. Thermal shutdown provides an
additional level of protection.
Low feedback voltage (500 mV) helps reduce power loss.
The AOZ1977 features a sync function to allow for
synchronization with an external clock or multiple
AOZ1977 devices.
The AOZ1977 is available in a standard SO-16 package
and operates over the -40 ? C to +85 ? C temperature
range.
Typical Application
Features
? 8 V to 30 V input bias voltage
? Up to 16 V driving capability at GATE pin and
DPWM pin.
? Disconnect control pin for PWM dimming or fault
conditions.
? Bi-directional clock synchronization
? 500 mV feedback regulation
? 8 bit PWM dimming resolution
? Cycle-by-cycle current limit
? Output over-voltage protection
? LED short and open protection
? Thermal shutdown protection
? SO-16 package
Applications
? LCD TV LED backlight
? Monitor LED backlight
PVIN
L1
D1
8V-30V
C1
AOZ1977
RT
DBR
C2
1
VIN
FB
16
C3
C4
2
3
VDD
GATE
ISET
COMP
15
14
Q 1
RS
4
5
6
7
GND
CS
AUTO
OSC
DBRT
OVP
DPWM
VREF
13
12
11
10
Rov1
Q2
CAuto
8
Rosc
SYNC
ILIM
9
RL1
Rr1
Rc
Cc
RF FB
SYNC
RL2
Rr2
Rov2
Rev. 2.1 May 2012
www.aosmd.com
Page 1 of 16
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相关代理商/技术参数 |
参数描述 |
|---|---|
| AOZ1978 | 制造商:AOSMD 制造商全称:Alpha & Omega Semiconductors 功能描述:Dual Channel High Voltage LED Driver IC |
| AOZ1995MI | 制造商:Alpha & Omega Semiconductor 功能描述:IC DISPLAY DRIVER |
| AOZ2002PI | 功能描述:Linear Voltage Regulator IC Positive Adjustable 1 Output Adj to 0.8V 2A 8-SO Exposed Pad 制造商:alpha & omega semiconductor inc. 系列:- 包装:带卷（TR） 零件状态:有效 稳压器拓扑:正，可调式 电压 - 输出:可调至 0.8V 电流 - 输出:2A 电压 - 跌落（典型值）:0.18V @ 2A 稳压器数:1 电压 - 输入:1.3 V ~ 5.5 V 电流 - 限制（最小值）:2.2A 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:8-SOIC（0.154"，3.90mm 宽） 供应商器件封装:8-SO 裸露焊盘 标准包装:3,000 |
| AOZ2003 | 制造商:AOSMD 制造商全称:Alpha & Omega Semiconductors 功能描述:3A Ultra Low Dropout Linear Regulator |
| AOZ2003PI | 制造商:Alpha & Omega Semiconductor 功能描述:IC REG LDO ADJ 3A 8SO |
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