参数资料
型号: ISL78100ARZ-TK
厂商: Intersil
文件页数: 18/19页
文件大小: 0K
描述: IC LED DRIVER AUTOMOTIVE 20-QFN
标准包装: 1,000
拓扑: PWM,降压(降压),升压(升压),切换式电容器(充电泵)
输出数: 1
内部驱动器:
类型 - 主要: 车载,背光
频率: 800kHz ~ 1.2MHz
电源电压: 2.7 V ~ 16 V
输出电压: 32V
安装类型: 表面贴装
封装/外壳: 20-VFQFN 裸露焊盘
供应商设备封装: 20-QFN(4x4)
包装: 带卷 (TR)
工作温度: -40°C ~ 105°C
ISL78100
Automotive Applications
The LED load and ISL78100 may be protected against load
dumps and other electrical faults in automotive supplies with
a minor addition to the standard application schematic:
? A reverse transient automotive-rated protection power
Schottky must be added in series with the input supply
? A 500 Ω current limit resistor must be inserted in series
with the VBAT pin
? The fault protection NFET must be specified to handle
100V VDS conditions.
Automotive Boost Application Diagram
V BAT
The protection circuit is applicable to buck, boost, and
supply-return load applications.
A small reduction in efficiency is caused by the drop in the
power Schottky.
Unless alternative transient protection is provided,
minimum BOM automotive applications must include the
circuit changes noted previously.
R LIM
500
TEMP
VIN
FAULT
VBAT
VDC
VHI
SWD1
SWD2
OVP
SENSOR
EN
V LEVEL (0V TO 2.5V)
TEMP
TMAX
EN/PWM
MODE
LEVEL
SWS1
SWS2
ENL
FB
GND
BUCK/BOOSTN
FIGURE 39. AUTOMOTIVE BOOST MODE APPLICATION DIAGRAM
Automotive Minimum BOM Boost Application Diagram
V BAT
VIN
FAULT
VBAT
VDC
TEMP
TMAX
VHI
SWD1
SWD2
OVP
SWS1
SWS2
EN
V LEVEL (0V TO 2.5V)
EN/PWM
MODE
LEVEL
ENL
FB
GND
BUCK/BOOSTN
FIGURE 40. AUTOMOTIVE MINIMUM BOM BOOST MODE APPLICATION
18
FN6626.1
December 24, 2013
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