LP87725-Q1 - Radar PMIC 3 Buck + LDO | Texas Instruments
MPN： LP87725-Q1 ✓ 啟用中LP87725-Q1 概覽
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.
直接替換替代品，適用於 LP87725-Q1 — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： LP87725-Q1 （相同外形與佔位） — 差異在於 Automotive Grade, Number of Outputs, Topology.
LP87721-Q1
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →LP87724-Q1
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
LP87725-Q1 最大額定值與電氣特性
| Manufacturer | Texas Instruments |
| 類別 | 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) |
| 封裝 | 24-VQFN-HR (4x4) |
| 安裝類型 | Surface Mount |
LP87725-Q1 24-vqfn-hr (4x4) 腳位配置指南
LP87725-Q1（24-vqfn-hr (4x4) 封裝）的腳位配置。 此功率元件具有閘極、汲極與源極端子。對於非極性封裝，請參閱製造商資料表以取得確切的第 1 腳方向與佈局詳細資訊。常見應用包括電源設計、馬達驅動與負載切換。
無詳細腳位定義資料： LP87725-Q1.
請參閱 資料表 以查看完整腳位配置。
典型應用
LP87725-Q1 適用於 6 應用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.
推薦
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.
推薦
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.
推薦
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.
推薦
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.
推薦
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.
推薦
推薦產品摘要
工程參考資料，適用於 LP87725-Q1 — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | LP87721-Q1 | LP87724-Q1 |
|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments |
| Package | 24-VQFN-HR (4x4) | 24-VQFN-HR (4x4) | 24-VQFN-HR (4x4) |
主要差異化特點
- Three buck converters + LDO + load switch (對比LP87721-Q1)
- Programmable sequencing with remote sensing (對比LP87724-Q1)
- Automotive AEC-Q100 qualified (對比non-Q1 alternatives)
設計說明
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.
合規資訊
AEC-Q100 qualification inferred from Q1 suffix and automotive application description. Other compliance status not verified from provided data.
