L9945集成电路(IC)电源管理-专用规格书PDF中文资料
![L9945](https://img.114ic.com/dgk/Renders/STMicro%20Renders/497~GAPGPS03451~~64-Pad-View.jpg)
厂商型号 |
L9945 |
参数属性 | L9945 封装/外壳为64-TQFP 裸露焊盘;包装为卷带(TR);类别为集成电路(IC) > 电源管理 - 专用;L9945应用范围:汽车级;产品描述:IC PTS SMART POWER |
功能描述 | Automotive fully configurable 8-channel High/Low side MOSFET pre-driver suitable for 12 V and 24 V systems |
文件大小 |
1.55761 Mbytes |
页面数量 |
151 页 |
生产厂商 | STMicroelectronics |
企业简称 |
STMICROELECTRONICS【意法半导体】 |
中文名称 | 意法半导体(ST)集团官网 |
原厂标识 | ![]() |
数据手册 | |
更新时间 | 2024-6-17 18:56:00 |
L9945规格书详情
Features
• AEC-Q100 qualified
• 12 V and 24 V battery systems compliance
• 3.3 V and 5 V logic compatible I/O
• 8-channel configurable MOSFET pre-driver
– High-side (N-channel and P-channel MOS)
– Low-side (N-channel MOS)
– H-bridge (up to 2 H-bridge)
– Peak & Hold (2 loads)
• Operating battery supply voltage 3.8 V to 36 V
• Operating VDD supply voltage 4.5 V to 5.5 V
• All device pins, except the ground pins, withstand at least 40 V
• Programmable gate charge/discharge currents for improving EMI behavior
• Individual diagnosis for:
– Short circuit to battery
– Open load
– Short circuit to ground
• Highly flexible overcurrent sensing implementation
– Possibility of monitoring external MOS drain to source voltage
– Possibility of monitoring voltage on external shunt resistor
– 64 programmable overcurrent thresholds independent for each channel
– Ultra-fast output shutdown in case of overcurrent
• Current limitation for H-Bridge configuration
• 32-bit SPI protocol available for configuration and diagnostics
– Failures latched even if they occur during diagnostics reading
– Daisy chain operation
– SDO protected against overvoltage
• Safety features
– Fast switch off redundant output disable through two external pins
– Built In Self Test (BIST) for logic operation
– Hardware Self Check (HWSC) for VDD5 overvoltage comparator
– Configurable Communication Check (CC) watchdog timer available
– Disable feedback through bi-directional pin
– Highly redundant output monitoring through dedicated SPI registers
• 10-bit ADC for battery and die temperature measurements available through SPI
• VDD5 monitoring for over/under voltage
• VPS (battery) monitoring for under voltage
• ISO26262 systems compatible
Description
The L9945 is an 8-channel MOSFET pre-driver configurable for low-side, high-side,
peak and hold and H-Bridge load control. It is designed to comply with the
requirements of 12 V (passenger vehicle) and 24 V (commercial vehicle) battery
systems.
All outputs can be PWM controlled. Six outputs are capable of driving safety relevant
loads. One output can be dedicated to the actuation of safety relevant loads requiring
a dedicated enable pin (EN6).
The device offers the possibility of controlling two independent H-Bridges.
The device can also drive up to two loads requiring peak & hold control strategy.
The driver outputs are protected against short circuit condition.
The device protects the external MOS in case of an overcurrent event.
Each output provides full diagnostic information such as short to battery, short to
ground and open-load. Each output status can be constantly monitored through
dedicated SPI registers.
The voltage slew rate of the external transistors 1-8 is controlled during turn ON and
turn OFF in order to improve EMI behavior.
A double, redundant, external disable source is available through DIS and NDIS pins
in order to improve safety.
The device is configurable via SPI through a 32-bit protocol.
L9945属于集成电路(IC) > 电源管理 - 专用。意法半导体(ST)集团制造生产的L9945电源管理 - 专用专用型电源管理集成电路 (PMIC) 用于电源的控制或操作,适合特定或小范围的目标应用,例如汽车气囊管理、电容器组平衡、AC 公共电力监控、存储器总线端接、接地故障检测、能量收集、小型引擎管理、处理器或芯片集专用电压调节、负载突降保护、触觉驱动器、热电制冷器控制等。
产品属性
- 产品编号:
L9945
- 制造商:
STMicroelectronics
- 类别:
集成电路(IC) > 电源管理 - 专用
- 系列:
Automotive, AEC-Q100
- 包装:
卷带(TR)
- 应用:
汽车级
- 电压 - 供电:
3.8V ~ 5.5V,4.5V ~ 36V
- 安装类型:
表面贴装型
- 封装/外壳:
64-TQFP 裸露焊盘
- 供应商器件封装:
64-TQFP-EP(10x10)
- 描述:
IC PTS SMART POWER
供应商 | 型号 | 品牌 | 批号 | 封装 | 库存 | 备注 | 价格 |
---|---|---|---|---|---|---|---|
STMicroelectronics |
24+ |
64-TQFP 裸露焊盘 |
28393 |
意法电源管理芯片-原装正品 |
询价 | ||
ST |
1928+ |
LQFP |
9852 |
只做原装正品现货或订货假一赔十! |
询价 | ||
NA |
23+ |
NA |
26094 |
10年以上分销经验原装进口正品,做服务型企业 |
询价 | ||
22+ |
NA |
3000 |
加我QQ或微信咨询更多详细信息, |
询价 | |||
ST/意法半导体 |
2023+ |
TQFP-64 |
6000 |
全新原装深圳仓库现货有单必成 |
询价 | ||
ST(意法) |
23+ |
NA/ |
8735 |
原厂直销,现货供应,账期支持! |
询价 | ||
ST/意法半导体 |
21+ |
TQFP-64 |
6000 |
原装现货 |
询价 | ||
ST |
21+ |
13880 |
公司只售原装,支持实单 |
询价 | |||
ST/意法半导体 |
23+ |
TQFP-64 |
30000 |
原装正品公司现货,假一赔十! |
询价 | ||
ST |
20+ |
LQFP |
3800 |
全新原装现货欢迎来询 |
询价 |