LP8772x-Q1 - Automotive Radar PMIC | Texas Instruments
MPN: LP8772x-Q1 ✓ NakahandaLP8772x-Q1 Ulas
A PMIC (Power Management Integrated Circuit) is a system-level IC that manages multiple power rails, typically including DC-DC converters, LDOs, and load switches. It ensures that each subsystem receives the correct voltage, current, and sequencing. The LP8772x-Q1 belongs to a family of radar-specific PMICs that address the unique requirements of mmWave sensors, such as low noise for RF chains and precise power sequencing for radar MMICs. By integrating three buck converters, an LDO, and a load switch, the LP8772x-Q1 minimizes external component count and simplifies the power tree, reducing design complexity and PCB size.
Key features include remote voltage sensing to compensate for IR drop between the regulator output and the point-of-load, programmable start-up and shutdown delays synchronized to the ENABLE signal, and an integrated watchdog timer for system monitoring. These features ensure accurate output voltage regulation and reliable operation. The 24-VQFN-HR package is compact and thermally efficient, with an exposed pad for heat dissipation. The Q1 suffix denotes AEC-Q100 qualification, which guarantees robust performance in harsh automotive environments.
The three synchronous buck converters deliver high-efficiency step-down regulation for digital core and I/O rails, while the LDO provides a low-noise supply for noise-sensitive analog circuits. The load switch allows controlled power gating to reduce standby current. The integrated watchdog helps detect system faults and ensures safe operation. The device supports programmable sequencing, allowing the power rails to come up in the correct order when the ENABLE signal is asserted.
Typical applications for the LP8772x-Q1 include automotive radar systems (AWR), industrial radar sensors (IWR), ADAS, traffic monitoring, and in-cabin occupant detection. The device is also used in UAV radar systems. Its flexible configuration and small footprint make it an ideal choice for space-constrained radar modules.
When designing with the LP8772x-Q1, engineers should pay careful attention to input/output capacitance, layout for remote sensing, and thermal management. The programmable sequencing must be configured to match the radar MMIC's power requirements. For precise output voltages, use the remote sense lines with Kelvin connections. Ensure the watchdog is properly programmed to avoid false resets during normal operation.
Mga alternatibo na pwedeng ilagay na LP8772x-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 LP8772x-Q1 (parehas na form factor at footprint) — pagkakaiba sa Automotive Grade, Number of Outputs, Topology.
LP87725-Q1
✅ Drop-InMagkontak para sa presyo
Tingnan ang Datasheet →LP87721-Q1
✅ Drop-In ⚠️ Mga Talaan Hindi NaiwerikmoMagkontak para sa presyo
Tingnan ang Datasheet →LP87722-Q1
✅ Drop-In ⚠️ Mga Talaan Hindi Naiwerikmo📋 Alternatibo na Reference (hindi sa katalogo)
LP87723-Q1
✅ Drop-In ⚠️ Mga Talaan Hindi Naiwerikmo📋 Alternatibo na Reference (hindi sa katalogo)
LP87724-Q1
✅ Drop-In ⚠️ Mga Talaan Hindi Naiwerikmo📋 Alternatibo na Reference (hindi sa katalogo)
LP8772x-Q1 Mga Pinakamataas na Rating at Electrical Characteristics
| Type ng Output | Three Buck Converters, One Linear Regulator, One Load Switch |
| Bilang ng Outputs | 5 |
| Topolohiya | Synchronous Buck (3) + LDO (1) + Load Switch (1) |
| Packhaging | 24-VQFN-HR (4x4) |
| Uri ng Pagpapasok | Surface Mount |
| Automotive Qualification | AEC-Q100 Qualified |
| Remote Voltage Sensing | Supported |
| Programmable Sequencing | Supported, synchronized to ENABLE signal |
| Watchdog Timer | Supported |
Gabay sa Pin Configuration ng LP8772x-Q1 24-vqfn-hr (4x4)
Pin configuration para sa LP8772x-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 LP8772x-Q1.
Sumangguni sa datasheet para sa buong pin configuration.
Tipikal na mga Gamit
LP8772x-Q1 ay nararapat para sa 6 aplikasyons: Automotive Radar (AWR), Industrial Radar (IWR), ADAS (Advanced Driver Assistance Systems), Traffic Monitoring Radar, In-Cabin Radar (Occupancy Detection), UAV Radar for Altitude Sensing.
Automotive Radar (AWR)
The LP8772x-Q1 is ideal for automotive radar systems based on TI's AWR mmWave sensors. It provides three buck converters for digital core and I/O rails, an LDO for analog supply, and a load switch for power gating. The programmable sequencing ensures the radar MMIC powers up in the correct order, preventing latch-up. With AEC-Q100 qualification and remote voltage sensing, it maintains rail accuracy under load transients, essential for reliable ADAS operations. The compact 4x4 mm package saves space in corner radar modules.
Inirekomenda
Industrial Radar (IWR)
For industrial radar sensing applications, the LP8772x-Q1 delivers the necessary power management for IWR mmWave sensors. It supplies three buck converters for the sensor's digital rails, an LDO for noise-sensitive analog circuits, and a load switch for standby control. The device's wide operating temperature and automotive-grade reliability make it suitable for industrial environments. The programmable shutdown delays allow proper sequencing when powering down, protecting the sensor from voltages out of range. The watchdog timer also monitors the system for errors during long-term operation.
Inirekomenda
ADAS (Advanced Driver Assistance Systems)
In ADAS applications, the LP8772x-Q1 provides the power solution for radar sensors used in adaptive cruise control, collision warning, and blind spot detection. Its three buck converters offer high efficiency for continuous operation, while the LDO supplies low-noise power for RF front-ends. The load switch enables power gating to minimize standby current. The device's sequencing capability ensures safe startup when the vehicle's ignition is turned on, meeting automotive standards. The remote voltage sensing improves accuracy even with long PCB traces to the sensor.
Inirekomenda
Traffic Monitoring Radar
Traffic monitoring and detection systems utilize the LP8772x-Q1 to power mmWave radar sensors that track vehicle flow and speed. The PMIC's three buck converters power the sensor's processing core, while the LDO provides clean analog rails for the RF chain. A load switch allows the radar to be powered down during idle periods, saving energy. With programmable delays, the power sequence matches the sensor's power-on reset requirements, ensuring reliable operation in outdoor conditions. The automotive qualification also supports use in smart transportation infrastructure.
Inirekomenda
In-Cabin Radar (Occupancy Detection)
The LP8772x-Q1 supports in-cabin radar systems for occupant detection and monitoring. These systems require precise power sequencing and low noise to avoid false detections. The LDO provides ultra-clean supply for the radar sensor's analog front-end, while the buck converters efficiently step down the automotive battery voltage. The load switch permits the radar to be operated intermittently, reducing average power consumption. The device's compact footprint fits well in interior modules. Its automotive qualification ensures dependable performance across temperature extremes.
Inirekomenda
UAV Radar for Altitude Sensing
In unmanned aerial vehicles (UAVs), the LP8772x-Q1 powers millimeter-wave radar sensors used for altitude and terrain detection. The PMIC's three buck converters provide efficient regulation from LiPo battery voltages, while the LDO feeds the sensitive RF chains. The load switch allows the radar system to be powered on and off for low-power standby. The small 4x4 mm package is critical for weight-constrained drone designs. Process control and monitoring ensure safe flight. The watchdog can help prevent system lockups during flight.
Inirekomenda
Buod ng mga Inirekomendang Produkto
Impormasyon ng Talumpati sa Engineering for LP8772x-Q1 — ikabit, gabay sa disenyo, at impormasyon ng pagsunod sa kautusan.
Paunawang Hanapin
Ikabit sa Mga Alternatibo
| Parametro | Ito ang Producto | LP87725-Q1 | LP87721-Q1 | LP87723-Q1 |
|---|---|---|---|---|
| Package | 24-VQFN-HR (4x4) | 24-VQFN-HR (4x4) | 24-VQFN-HR (4x4) | 24-VQFN-HR (4x4) |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Number of Outputs | 5 | 5 | 5 | 5 |
| Buck Converters | 3 | 3 | 3 | 3 |
| LDO Regulator | 1 | 1 | 1 | 1 |
| Load Switch | 1 | 1 | 1 | 1 |
| AEC-Q100 Qualified | Yes | Yes | Yes | Yes |
| Remote Voltage Sensing | Supported | Supported | Supported | Supported |
Pangunahing mga Pagkakaiba
- Integrated solution with three bucks, one LDO, and one load switch in a 4x4 mm package (kumpara saDiscrete power circuit)
- AEC-Q100 qualification for automotive (kumpara saUnqualified PMICs)
- Remote voltage sensing improves accuracy (kumpara saPMICs without remote sensing)
Talaan ng Disenyo
The LP8772x-Q1 requires careful input and output capacitor selection to ensure stability and transient response. For the three buck converters, use low-ESR ceramic capacitors (e.g., 10-22 uF) near the outputs. The LDO requires a 1-10 uF output capacitor. The load switch output should be decoupled with at least 1 uF. Poor decoupling may cause voltage droop during radar pulse operation.
Remote voltage sensing is crucial for accurate output voltages. Route the sense lines as a Kelvin pair from the point-of-load back to the LP8772x-Q1, keeping them away from switching nodes. Use a solid ground plane underneath the PMIC, and place the thermal pad vias to maximize heat dissipation. Small 4x4 mm packages demand careful thermal management.
The programmable startup sequencing must be configured to match the radar MMIC's power requirements. If the sequence is incorrect, the device may experience latch-up or failure. Ensure the ENABLE signal timing is synchronized with the shutdown delays. Also, configure the watchdog timer correctly to avoid false resets during normal operation.
Impormasyon ng Pagsunod sa Kautusan
AEC-Q100 qualified per Q1 designation. RoHS and REACH status not specified in verified data.
