LP87725-Q1 - Radar PMIC 3 Buck + LDO | Texas Instruments
料号： LP87725-Q1 ✓ 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 |
LP87725-Q1 概述
What is a power management IC? A PMIC is a specialized chip that sits between the battery or main power rail and the application processor or sensor, generating and sequencing the multiple supply voltages required by different sub-blocks. In a radar system, the PMIC must supply clean, tightly regulated rails to the RF transceiver, the digital baseband, and the analog front-end, with precise power-up sequencing to prevent latch-up or damage.
Key features of the LP87725-Q1 include three buck converters with integrated FETs for high efficiency, an LDO for noise-sensitive analog supplies, and a load switch to turn off unused rails. It supports remote voltage sensing to compensate for IR drop between the regulator output and the point-of-load, improving output voltage accuracy. Programmable start-up and shutdown delays and sequences are synchronized to the ENABLE signal, simplifying power sequencing in multi-rail systems.
The device is qualified for automotive applications (AEC-Q100, implied by the Q1 suffix) and is optimized to power the AWR/IWR MMICs used in advanced driver-assistance systems (ADAS) and industrial radar. Typical applications include automotive radar, industrial radar for traffic monitoring, drones, and proximity sensing. The compact VQFN package and integrated components reduce board space and simplify radar sensor module design.
Design considerations include proper thermal management to dissipate heat from the buck converters, and careful PCB layout to minimize parasitic inductance and noise. The programmable sequencing feature must be configured to match the power-up requirements of the MMIC. For detailed design guidance, consult the LP87725-Q1 datasheet and the LP87725Q1EVM evaluation module.
直接替换替代料： LP87725-Q1 ——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： LP87725-Q1 （相同外形与封装尺寸） ——差异在于 Automotive Grade, Number of Outputs, Topology.
快速对比工具——选择替代料号进行并排对比：
LP87721-Q1
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
联系询价
查看数据手册 →LP87724-Q1
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
LP87725-Q1 最大额定值与电气特性
| Manufacturer | Texas Instruments |
| 分类 | Power Management IC (PMIC) |
| Number of Buck Converters | 3 |
| Number of LDO Regulators | 1 |
| Load Switch | 1 |
| Total Outputs | 5 |
| Automotive Grade | Yes (AEC-Q100 via Q1 suffix) |
| 封装 | 24-VQFN-HR (4x4) |
| 安装类型 | Surface Mount |
LP87725-Q1 24-vqfn-hr (4x4) 引脚配置指南
LP87725-Q1（24-vqfn-hr (4x4) 封装）的引脚配置。 该功率器件具有栅极、漏极和源极端子。对于无极性封装，请参阅制造商数据手册以了解确切的引脚 1 方向和封装尺寸细节。常见应用包括电源设计、电机驱动和负载开关。
暂无详细引脚数据： LP87725-Q1.
请参阅 数据手册 以查看完整引脚配置。
典型应用
LP87725-Q1 适用于 6 应用s: Automotive Radar, Industrial Radar, mmWave Sensor Power, ADAS Electronic Control Unit (ECU), Drone and UAV Radar, Traffic Monitoring Radar.
Automotive Radar
The LP87725-Q1 is specifically designed to power TI's AWR and IWR mmWave radar MMICs in automotive ADAS applications. Its three buck converters provide separate rails for the radio frequency (RF) front-end, analog baseband, and digital core, while the integrated LDO supplies a low-noise rail for sensitive analog circuits. The load switch allows complete shutdown of unused sections to reduce quiescent current. The device's programmable sequencing ensures the radar MMIC powers up in the correct order, preventing damage. The AEC-Q100 qualification guarantees operation over automotive temperature ranges and stress conditions.
推荐
Industrial Radar
In industrial radar applications, such as traffic monitoring, level sensing, and robotics, the LP87725-Q1 provides the multiple supply rails required by radar MMICs and signal processors. The three buck converters achieve high efficiency while delivering the varied voltages needed for the analog and digital portions of the radar system. The load switch enables power cycling of specific blocks to save energy. The remote voltage sensing feature compensates for IR drop across the PCB, maintaining accurate output voltage at the point-of-load, which is critical for reliable radar measurements in industrial environments.
推荐
mmWave Sensor Power
The LP87725-Q1 powers mmWave radar sensors used in applications from smart connected devices to autonomous systems. It converts a single input supply into multiple regulated outputs: three buck converters for the radar MMIC's RF, IF, and digital rails, and an LDO for a clean analog supply. The load switch isolates a peripheral block to save power when the system is idle. With programmable delays and sequencing, the LP87725-Q1 ensures the sensor wakes up safely and shuts down reliably, improving system robustness and reducing design complexity.
推荐
ADAS Electronic Control Unit (ECU)
In ADAS ECUs, the LP87725-Q1 regulates power for radar and camera fusion modules. The three buck converters provide efficient step-down conversion with output voltages set for specific radar MMIC requirements, while the LDO delivers low-noise supply for clock and interface circuits. The load switch enables independent control of radar power, allowing the system to conserve energy when the radar is not active. The Q1 qualification meets harsh automotive electrical requirements, and the small VQFN package saves space on the ECU PCB, helping reduce overall system size.
推荐
Drone and UAV Radar
The LP87725-Q1 supports radar sensors in drones and unmanned aerial vehicles (UAVs) for obstacle detection, terrain mapping, and landing assistance. Its ability to generate multiple power rails from a single battery supply simplifies the power architecture. The three buck converters are highly efficient, extending flight time, while the LDO provides noise-free power for sensitive analog circuitry. The load switch helps manage system power during startup and idle modes. The compact 24-pin VQFN-HR package minimizes footprint and weight, which is crucial for weight-sensitive UAV designs.
推荐
Traffic Monitoring Radar
The LP87725-Q1 powers radar sensors used in traffic monitoring for smart city infrastructure. The PMIC provides the required supply voltages for the radar transceiver and processing chain, with three buck converters for high-current digital rails and an LDO for low-noise analog rails. The load switch allows selective powering to save energy. The remote voltage sensing feature maintains accurate output voltages, ensuring consistent radar performance even with long traces and varying load conditions, which is essential for reliable vehicle detection and speed measurement in intelligent transportation systems.
推荐
推荐产品汇总
工程参考数据： LP87725-Q1 ——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 | LP87721-Q1 | LP87724-Q1 |
|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments |
| Package | 24-VQFN-HR (4x4) | 24-VQFN-HR (4x4) | 24-VQFN-HR (4x4) |
关键差异点
- Three buck converters + LDO + load switch （对比 LP87721-Q1)
- Programmable sequencing with remote sensing （对比 LP87724-Q1)
- Automotive AEC-Q100 qualified （对比 non-Q1 alternatives)
设计说明
The LP87725-Q1 integrates buck converters and an LDO. The power dissipated depends on switching losses and output currents. Ensure adequate PCB copper area and vias for heat spreading from the VQFN-HR package. The exposed pad must be soldered to a ground plane. For high output currents, consider thermal design calculations from the datasheet.
Route the remote sense lines from the point-of-load back to the FB pins to improve output voltage accuracy. Keep these traces away from switching nodes to avoid noise pickup. Use thick traces for high-current outputs and a solid ground plane. Place the input and output capacitors close to the IC pins to minimize parasitic loops.
Use the programmable start-up and shutdown delays to sequence the output rails in the order required by the radar MMIC. Connect the ENABLE signal to a supervisor or controller. Incorrect sequencing can cause latch-up or a failure to boot. Refer to the datasheet for the recommended sequence for the AWR or IWR MMIC.
合规信息
AEC-Q100 qualification inferred from Q1 suffix and automotive application description. Other compliance status not verified from provided data.
