- 您现在的位置：买卖IC网 > Datasheet目录306 > A3944KLPTR-T (Allegro Microsystems Inc)IC PREDRIVER MOSFET 6CH TSSOP Datasheet资料下载
参数资料
| 型号： | A3944KLPTR-T |
| 厂商： | Allegro Microsystems Inc |
| 文件页数： | 24/31页 |
| 文件大小： | 0K |
| 描述： | IC PREDRIVER MOSFET 6CH TSSOP |
| 标准包装： | 8,000 |
| 配置： | 低端 |
| 输入类型： | 并行/串行 |
| 延迟时间： | 200ns |
| 电流 - 峰： | 50mA |
| 配置数： | 6 |
| 输出数： | 6 |
| 电源电压： | 6 V ~ 40 V |
| 工作温度： | -40°C ~ 150°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 28-SOIC（0.173"，4.40mm 宽）裸露焊盘 |
| 供应商设备封装： | 28-TSSOP 裸露焊盘 |
| 包装： | 带卷 (TR) |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页当前第24页第25页第26页第27页第28页第29页第30页第31页
A3944
Minimum guaranteed open load resistance
Automotive, Low Side FET Pre-Driver
For a 6 V supply this gives a maximum value of 19 k Ω for the
V Lmax – V OLmax
(8)
The minimum value of R L that will always be detected as an open
is given by the maximum value of R L that could be detected as a
load, R Lmax . This is defined by:
R Lmax = – R Dmin
I DPDmin
For an 18 V supply this gives a minimum guaranteed open load
resistance value of 79 k Ω . This means that under all conditions,
with a load voltage of up to 18 V, a load resistance greater than
79 k Ω will always be detected as an open load. For a 36 V supply
the minimum guaranteed open load resistance value increases to
sum of the open load resistance and the DRNx current limit resis-
tor.This means, for example, that under all conditions, with a
DRNx current limit resistor of up to 7 k Ω , a load resistance less
than 12 k Ω will never cause an open load detection.
The two limiting values are shown in figure 14 for load volt-
ages from 6 to 36 V. Note that the load resistance value includes
the DRNx current limit resistor. In this figure, a load resistance
greater than the upper line is guaranteed to be detected as an open
load and a load resistance less than the lower line is guaranteed
not to be detected as an open load.
379 k Ω .
Practical Short to Ground Limits
Maximum load resistance
The maximum value of R L that will always be detected as a load
is given by the minimum value of R L that could be detected as a
open, R Lmin . This is defined by:
A short to ground is detected, when the external FET is off, if
the voltage at the DRNx terminal is less than the short to ground
threshold, V STG . Under ideal conditions a short circuit would be
zero resistance and the short would be to ground at zero volts.
However in practical systems the short will have a finite resis-
R Lmax =
V Lmax – V OLmax
I DPDmin
– R Dmin
(9)
tance and the power ground voltage may be higher than the refer-
ence ground of the detection circuit. The equivalent circuit during
a short to ground is shown in figure 15.
I DPU
V OCL
V L
R L
+
-
V STG
DRNx
R Dx
R SG
V G
Figure 14. Open load detection limits
Figure 15. Short to ground detection condition
Allegro MicroSystems, LLC
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
24
相关PDF资料 |
PDF描述 |
|---|---|
| A3985SLDTR-T | IC MOSFET DRVR PROG DUAL 38TSSOP |
| A4933KJPTR-T | IC PREDRIVER MOSFET 3PH 48LQFP |
| A4935KJPTR-T | IC MOSFET DVR AUTO 3PH 48-LQFP |
| A4940KLPTR-T | IC MOSF DVR FULL BRIDGE 24TSSOP |
| A6210GEUTR-T | IC LED DRIVER HIGH BRIGHT 16-QFN |
相关代理商/技术参数 |
参数描述 |
|---|---|
| A3946 | 制造商:ALLEGRO 制造商全称:Allegro MicroSystems 功能描述:Half-Bridge Power MOSFET Controller |
| A3946GLPTR-T | 制造商:Allegro MicroSystems LLC 功能描述: |
| A3946KLB | 功能描述:IC CTRLR MOSFET 16-SOIC RoHS:否 类别:集成电路 (IC) >> PMIC - 电机和风扇控制器，驱动器 系列:- 标准包装:1 系列:- 应用:直流电机驱动器，步进电机驱动器 评估套件:- 输出数:1 或 2 电流 - 输出:750mA 电压 - 负载:10 V ~ 40 V 电源电压:4.5 V ~ 5.5 V 工作温度:-20°C ~ 70°C 安装类型:表面贴装 封装/外壳:24-BFSOP（0.295"，7.50mm 宽） 供应商设备封装:24-SOP 包装:Digi-Reel® 其它名称:MTS62C19A-HS105DKR |
| A3946KLB-T | 功能描述:IC MOSFET CONTROLLER 16-SOIC RoHS:是 类别:集成电路 (IC) >> PMIC - 电机和风扇控制器，驱动器 系列:- 标准包装:1 系列:- 应用:直流电机驱动器，步进电机驱动器 评估套件:- 输出数:1 或 2 电流 - 输出:750mA 电压 - 负载:10 V ~ 40 V 电源电压:4.5 V ~ 5.5 V 工作温度:-20°C ~ 70°C 安装类型:表面贴装 封装/外壳:24-BFSOP（0.295"，7.50mm 宽） 供应商设备封装:24-SOP 包装:Digi-Reel® 其它名称:MTS62C19A-HS105DKR |
| A3946KLBTR | 功能描述:IC CTRLR MOSFET 16-SOIC RoHS:否 类别:集成电路 (IC) >> PMIC - 电机和风扇控制器，驱动器 系列:- 标准包装:1 系列:- 应用:直流电机驱动器，步进电机驱动器 评估套件:- 输出数:1 或 2 电流 - 输出:750mA 电压 - 负载:10 V ~ 40 V 电源电压:4.5 V ~ 5.5 V 工作温度:-20°C ~ 70°C 安装类型:表面贴装 封装/外壳:24-BFSOP（0.295"，7.50mm 宽） 供应商设备封装:24-SOP 包装:Digi-Reel® 其它名称:MTS62C19A-HS105DKR |
发布紧急采购，3分钟左右您将得到回复。