L9965P-FP - Automotive HV Pyro-Fuse Driver | STMicroelectronics
料号： L9965P-FP ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $0 | $0.00 |
| 10 | $0 | $0.00 |
| 100 | $0 | $0.00 |
| 500 | $0 | $0.00 |
| 1,000 | $0 | $0.00 |
L9965P-FP 概述
A pyro-fuse driver is a specialized power-management and circuit-protection semiconductor that converts a low-power control command into the controlled energy pulse required to trigger a pyrotechnic or pyrofuse disconnect. In the broader hierarchy, it belongs to battery management, circuit protection, power-management ICs, and automotive semiconductor systems rather than a conventional signal amplifier or standalone power MOSFET.
The verified manufacturer description identifies a single output channel and a dual powerMOS stage comprising one high-side and one low-side device. This topology is designed to disconnect high-voltage battery lines quickly and reliably when a short circuit or vehicle crash creates a hazardous condition. The associated distributor record identifies the device as an energy-storage device PMIC in a 32-TQFP (7x7) package.
The STMicroelectronics product page and datasheet identify L9965P as an automotive-grade device intended for high-voltage battery-line breaking. Its design supports safety-critical applications where the disconnect action must be controlled and reliable. Because the supplied verified data does not expose complete electrical ratings, pin assignments, timing values, thermal limits, or protection thresholds, those details remain marked as data needed rather than inferred.
Typical application domains include high-voltage battery busbars, electric-vehicle battery packs, crash-disconnect systems, short-circuit response circuits, and automotive energy-storage protection. The device is most useful where an external pyrotechnic element performs the mechanical or energetic interruption and the IC must supply a controlled driver signal to that element.
Designers should treat the L9965P-FP as a safety-critical actuator interface rather than a generic load switch. PCB layout, high-voltage isolation, return-path control, decoupling, thermal design, pyro-element wiring, and system-level diagnostic coverage must follow the manufacturer datasheet and vehicle safety requirements. The verified sources do not provide enough detail to specify capacitor values or pin-level connections here.
This page combines the verified STMicroelectronics product description, manufacturer datasheet link, distributor package information, and engineering selection guidance. It also distinguishes what is directly verified from what still requires datasheet confirmation, avoiding unsupported numerical claims.
直接替换替代料： L9965P-FP ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： L9965P-FP （相同外形与封装尺寸） ——差异在于 Output Stage, Package, Product Type, RoHS Status.
快速对比工具——选择替代料号进行并排对比：
L9965P-FP-TR
✅ 直接替换✓ 有现货
$3.42 / 个
查看数据手册 →L9965P-FP 规格参数
| Product Type | Automotive single-channel pyro-fuse driver |
| Application | High-voltage battery busbar disconnection |
| Channel Count | 1 channel |
| Output Stage | Dual FET output stage |
| High-Side FET | 1 high-side powerMOS |
| Low-Side FET | 1 low-side powerMOS |
| Safety Function | Breaks high-voltage battery line during short circuit or crash |
| Automotive Positioning | Automotive-grade |
| 封装 | 32-TQFP (7x7) |
| 安装类型 | Surface mount |
| DigiKey Package Designation | 32-TQFP (7x7) |
| RoHS 状态 | Compliant, per Newark product listing |
| 引脚数量 | 32 pins |
L9965P-FP 32-tqfp (7x7) 引脚配置指南
L9965P-FP（32-tqfp (7x7) 封装）的引脚配置。 引脚编号、功能和连接图在制造商数据手册中定义。请参阅该手册以了解确切的封装尺寸和焊接指南。
暂无详细引脚数据： L9965P-FP.
请参阅 数据手册 以查看完整引脚配置。
典型应用
L9965P-FP 适用于 6 应用s: High-Voltage Battery Busbar Disconnect, Electric-Vehicle Battery-Pack Protection, Crash-Triggered Isolation, Short-Circuit Response Circuit, Automotive Energy-Storage Safety, High-Voltage Busbar Protection.
High-Voltage Battery Busbar Disconnect
The L9965P-FP fits a battery-busbar safety circuit because STMicroelectronics identifies it as an automotive single-channel driver for breaking a high-voltage battery line quickly and reliably. Its high-side and low-side powerMOS output stage provides the controlled switching interface to a pyrotechnic or pyrofuse element. The design goal is rapid isolation during a short circuit or crash, while the mechanical interruption is performed by the external element. The verified data confirms the function, channel count, and 32-TQFP package, but supply voltage, firing-current limits, pulse timing, and absolute maximum ratings remain to be confirmed from the manufacturer datasheet.
推荐
Electric-Vehicle Battery-Pack Protection
The L9965P-FP is applicable to an electric-vehicle battery-pack protection function where a crash or electrical fault requires rapid separation of a high-voltage energy source. Its automotive-grade positioning and single-channel architecture match a dedicated pyrofuse safety path rather than a general-purpose regulator or contactor driver. The IC controls a dual high-side/low-side powerMOS output stage, allowing the system to route a controlled firing event to the disconnect element. Because the supplied sources do not provide cell-monitoring or contactor-control specifications, this device should be treated as one element of a larger battery-safety architecture rather than a complete BMS.
推荐
Crash-Triggered Isolation
The L9965P-FP can serve as the final controlled driver in a crash-triggered high-voltage isolation circuit. When an external vehicle-safety controller detects a collision condition, the pyrofuse driver provides the electrical interface needed to command the disconnect element. This separation between control electronics and energetic hardware helps isolate the battery busbar while limiting the role of the IC to a defined safety actuator. The verified manufacturer description confirms rapid and reliable breaking of the high-voltage battery line in a crash, but it does not provide crash-signal logic thresholds, response time, or diagnostic coverage.
推荐
Short-Circuit Response Circuit
The L9965P-FP is suited to a short-circuit response path that must command a high-voltage disconnect rather than merely reduce current in a load. Its dual-FET high-side/low-side output stage is the verified architecture used to control the pyrofuse firing circuit. This arrangement allows the battery busbar to be opened quickly when a fault threatens the vehicle or energy-storage system. Designers must still validate fault detection, isolation timing, wiring inductance, transient immunity, and the energy limits of the external pyrotechnic element using the complete manufacturer documentation.
推荐
Automotive Energy-Storage Safety
The L9965P-FP can be integrated into an automotive energy-storage safety module where a compact, dedicated driver is preferred for a single high-voltage disconnect channel. The verified DigiKey listing categorizes the device as an energy-storage device PMIC, while the manufacturer describes it as an automotive pyro-fuse driver. Those identifiers support use in a battery-protection subsystem but do not establish a complete energy-storage-management function. External monitoring, protection, contactor control, diagnostic reporting, and safety-case evidence remain necessary to turn the driver into a qualified vehicle subsystem.
推荐
High-Voltage Busbar Protection
The L9965P-FP is appropriate for a protection circuit placed around a high-voltage busbar that must be disconnected after a severe fault. Its single-channel structure makes it suitable for one controlled pyro-disconnect event, and the manufacturer identifies the device specifically for high-voltage battery-line breaking. The dual-FET output stage provides the interface to the firing element, while the vehicle safety controller determines when the event should occur. The verified sources do not provide the maximum busbar voltage, output impedance, or thermal limits, so those ratings must be checked before selecting PCB creepage, connectors, and protection components.
推荐
工程参考数据： L9965P-FP ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | L9965P-FP-TR |
|---|---|---|
| Package | 32-TQFP (7x7) | 32-TQFP (7x7) |
| Brand | STMicroelectronics | STMicroelectronics |
| Supplier Packaging Designation | 32-TQFP (7x7) | 32-TQFP (7x7) |
关键差异点
- Dedicated single-channel automotive pyro-fuse function （对比 L9965P-FP-TR)
- Dual-FET high-side and low-side output architecture （对比 L9965P-FP-TR)
- High-voltage battery-line disconnection use case （对比 L9965P-FP-TR)
- No verified independent cross-brand substitute （对比 No candidate verified)
设计说明
Treat the L9965P-FP as a controlled high-energy actuator interface, not as a conventional low-power logic driver. Before layout, use the manufacturer datasheet to establish the allowed supply range, output current, output voltage, pyrotechnic pulse limits, and external-component requirements. The verified web data confirms the dual high-side/low-side powerMOS stage but does not expose those numerical limits, so selecting FETs, resistors, connectors, and protection parts by inference is unsafe.
Route the pyrofuse firing path with very short, wide traces and minimize loop area to reduce parasitic inductance during the high-current event. Keep high-voltage and pyrotechnic energy paths away from low-energy sensing and communications. Use the official TQFP-EP land pattern and thermal-via recommendations from STMicroelectronics rather than relying only on the distributor package label. Confirm creepage, clearance, exposed-pad connection, and isolation requirements against the complete package drawing and vehicle safety architecture.
Separate the control, feedback, and power paths so switching transients from the dual-FET output stage do not corrupt fault-detection or diagnostic signals. Place local input filtering and output-support components according to the datasheet reference layout, with attention to the high-current return path and the exposed thermal pad. The supplied sources do not identify the pinout or exact recommended component values, so no capacitor or resistor values are asserted here.
Do not substitute a normal MOSFET, relay driver, or contactor driver solely because it has a similar package. A true replacement must preserve the L9965P-FP control interface, dual-FET output behavior, diagnostic expectations, automotive qualifications, and pyrotechnic pulse ratings. The supplied cross-reference search found only the same-family L9965P-FP-TR ordering entry; no independently verified cross-brand drop-in replacement was established.
合规信息
Newark explicitly lists the L9965P-FP as RoHS compliant. The supplied data does not provide verified REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals statements. Automotive positioning is verified, but formal AEC-Q100 qualification is not independently established by the supplied snippets.
