LP87725-Q1 - Radar PMIC 3 Buck + LDO | Texas Instruments
MPN: LP87725-Q1 ✓ NakahandaLP87725-Q1 Ulas
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.
Mga alternatibo na pwedeng ilagay na LP87725-Q1 — parehas na package, pin-to-pin na katugmang. Hindi kasama ang mga bahagi ng iba't-ibang package na nangangailangan ng pagpapaayos ng PCB.
Variante sa Seri na ito
Katulad na modelo sa serye na katugma sa pagpasok LP87725-Q1 (parehas na form factor at footprint) — pagkakaiba sa Automotive Grade, Number of Outputs, Topology.
LP87721-Q1
✅ Drop-In ⚠️ Mga Talaan Hindi NaiwerikmoMagkontak para sa presyo
Tingnan ang Datasheet →LP87724-Q1
✅ Drop-In ⚠️ Mga Talaan Hindi Naiwerikmo📋 Alternatibo na Reference (hindi sa katalogo)
LP87725-Q1 Mga Pinakamataas na Rating at Electrical Characteristics
| Manufacturer | Texas Instruments |
| Kategorya | 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) |
| Packhaging | 24-VQFN-HR (4x4) |
| Uri ng Pagpapasok | Surface Mount |
Gabay sa Pin Configuration ng LP87725-Q1 24-vqfn-hr (4x4)
Pin configuration para sa LP87725-Q1 (24-vqfn-hr (4x4) package). Ang power device na ito ay may gate, drain, at source terminals. Para sa mga non-polarized package, sumangguni sa datasheet ng manufacturer para sa eksaktong oryentasyon ng pin 1 at mga detalye ng footprint. Kasama sa mga karaniwang aplikasyon ang disenyo ng power supply, motor driving, at load switching.
Wala ng detalyadong pinout data na magagamit para sa LP87725-Q1.
Sumangguni sa datasheet para sa buong pin configuration.
Tipikal na mga Gamit
LP87725-Q1 ay nararapat para sa 6 aplikasyons: 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.
Inirekomenda
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.
Inirekomenda
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.
Inirekomenda
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.
Inirekomenda
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.
Inirekomenda
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.
Inirekomenda
Buod ng mga Inirekomendang Produkto
Impormasyon ng Talumpati sa Engineering for LP87725-Q1 — ikabit, gabay sa disenyo, at impormasyon ng pagsunod sa kautusan.
Paunawang Hanapin
Ikabit sa Mga Alternatibo
| Parametro | Ito ang Producto | LP87721-Q1 | LP87724-Q1 |
|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments |
| Package | 24-VQFN-HR (4x4) | 24-VQFN-HR (4x4) | 24-VQFN-HR (4x4) |
Pangunahing mga Pagkakaiba
- Three buck converters + LDO + load switch (kumpara saLP87721-Q1)
- Programmable sequencing with remote sensing (kumpara saLP87724-Q1)
- Automotive AEC-Q100 qualified (kumpara sanon-Q1 alternatives)
Talaan ng Disenyo
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.
Impormasyon ng Pagsunod sa Kautusan
AEC-Q100 qualification inferred from Q1 suffix and automotive application description. Other compliance status not verified from provided data.
