参数资料
型号: ISL78100ARZ-T
厂商: Intersil
文件页数: 3/19页
文件大小: 0K
描述: IC LED DRIVER AUTOMOTIVE 20-QFN
标准包装: 6,000
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
Electrical Specifications
V BAT = V IN = 12V, V DC = 5V, T A = -40°C to +105°C unless otherwise specified. (Continued)
PARAMETER
FB OV FAULT
f SW
f DIMMING
DESCRIPTION
Feedback Overvoltage Fault
Switching Frequency
Maximum Recommended PWM
CONDITIONS
V LEVEL = 1V, EN/PWM = 3V
Mode = 1, modulation signal applied to EN/PWM
MIN
220
800
TYP
250
1000
10
MAX
300
1150
UNIT
mV
kHz
kHz
Dimming Frequency
t SWITCH
Load Switch Transition Time
C GATE = 2nF
100
ns
RLS DRIVERL
RLS DRIVERH
t FAULT
Load Switch Driver Impedance Low
Load Switch Driver Impedance High
Fault Timer Period
EN/PWM = 0
EN/PWM = 3V
40
30
30
50
50
52
60
Ω
Ω
ms
t DELAY
Start-up Delay
Timed LX switching delay
0.85
1
1.24
ms
V FAULTPUMP
V BOOST
V BUCK
V MODEL
V MODEH
en FAULT
Fault Pin Charge Pump
Boost Mode Threshold
Buck Mode Threshold
Mode Low Threshold
Mode High Threshold
Input Level Applied to TMAX Pin to
V BAT = V IN = 3V
BUCK/BOOSTN = GND
BUCK/BOOSTN = V DC
MODE = GND
MODE = V DC
6
0.94V DC
2/3V DC
0.4V DC
1/3V DC
0.9V DC
V
V
V
V
V
V
Enable Fault Protection
dis FAULT
Input Level Applied to TMAX Pin to
0.96V DC
V
Disable Fault Protection
en TEMP
Input Level Applied to TEMP Pin to
0.5
V
Enable Temperature Compensation
dis TEMP
Input Level Applied to TEMP Pin to
0.08
V
Disable Temperature Compensation
T COMPP
VFB Positive Temperature
VTEMP/VDC = 0.80
1.26
Compensation; VFB/VFBnom
T COMPN
VFB Negative Temperature
VTEMP/VDC = 0.20
0.74
Compensation; VFB/VFBnom
T TRIP
Internal Temperature Protection
135
°C
Threshold
T HYS
Internal Temperature Protection
25
°C
Hysteresis
VEN/PWM L
VEN/PWM H
V DCUVLO
EN/PWM Pin Input Low Threshold
EN/PWM Pin Input High Threshold
V DC Undervoltage Lockout
2.5
1.2
2.6
V
V
V
R Schottky
Internal Schottky Diode for Buck
15
23
Ω
.
TABLE 1. LIGHT OUTPUT CONTROL, V DC = 5.0V
MODE
TEMP
OPERATING MODE
1
(VDC - 0.25) > V > 0.25V Standard Mode light level to PWM modulation of EN/PWM input; LED bias current determined by
LEVEL voltage, nominal 1V
Don’t Care
0
V < 0.25V
V < (VDC - 0.25)
3
Disable temperature compensation
Fixed Bias Mode V FB level internally set to 0.4V, independent of V LEVEL
FN6626.1
December 24, 2013
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