LP87721-Q1 - Automotive 3A 3-Channel Low-Noise Buck PMIC | Texas Instruments
部品番号: LP87721-Q1 ✓ 生産中| 数量 | 単価 | 小計 |
|---|---|---|
| 1 | $0 | $0.00 |
| 10 | $0 | $0.00 |
| 100 | $0 | $0.00 |
| 500 | $0 | $0.00 |
| 1,000 | $0 | $0.00 |
LP87721-Q1 概要
A PMIC, or Power Management IC, is a semiconductor device that integrates multiple voltage regulator channels, control logic, and sequencing functions into a single chip. It sits within the broader power management IC hierarchy, which is a subset of integrated circuits used to convert, regulate, and distribute power across a system. PMICs are essential for managing the multiple power rails required by processors, sensors, RF transceivers, and other analog and digital components.
Key features of the LP87721-Q1 include three independent buck converter channels, each capable of sourcing 3A, a low-noise design for sensitive radar signal chains, and automotive qualification. The integrated MOSFETs and control circuitry reduce external component count, simplifying board design. The device supports a wide input voltage range, although specific values require verification from the datasheet. The compact VQFN-HR package enables space-constrained designs typical of in-vehicle radar modules.
Architecturally, the LP87721-Q1 uses synchronous buck topology to achieve high efficiency, and the low-noise output is critical for maintaining radar signal integrity. The PMIC includes features for power sequencing, allowing controlled start-up of multiple rails. Detailed specifications such as switching frequency, output voltage accuracy, and quiescent current are documented in the TI datasheet (https://www.ti.com/product/LP87721-Q1).
Typical applications include automotive radar front ends, advanced driver assistance systems (ADAS), driver monitoring systems, and industrial radar. The device is particularly suited for powering radar processors and sensors, where multiple clean 3A rails are required. Its AEC-Q100 qualification ensures reliable operation under harsh automotive conditions.
When designing with the LP87721-Q1, pay attention to input and output capacitor selection to maintain stability and reduce noise. Ensure adequate PCB copper area for thermal dissipation, as the buck converters can dissipate significant power at high load. The sequencing feature should be utilized to maintain proper power-up order. For precise design guidance, refer to the TI application notes and reference designs.
ドロップイン代替品: LP87721-Q1 — 同一パッケージでピン互換。PCBの作り直しが必要な異なるパッケージの部品は除外されています。
このシリーズのバリエーション
同一シリーズでドロップイン互換のモデル: LP87721-Q1 （同一形状・フットプリント） — 相違点: Automotive Grade, Number of Outputs, Topology.
クイック比較ツール — 並列比較する代替部品を選択:
LP87725101RAGRQ1
⚡ 同一パッケージ📋 参考代替品（カタログ未掲載）
LP87722-Q1
✅ ドロップイン ⚠️ 仕様未検証📋 参考代替品（カタログ未掲載）
LP87723-Q1
✅ ドロップイン ⚠️ 仕様未検証📋 参考代替品（カタログ未掲載）
LP87724-Q1
✅ ドロップイン ⚠️ 仕様未検証📋 参考代替品（カタログ未掲載）
LP87725-Q1
✅ ドロップイン ⚠️ 仕様未検証✓ 在庫あり
価格はお問い合わせください
データシートを見る →LP87721-Q1 最大定格＆電気的特性
| パッケージ | 24-VQFN-HR (4x4) |
| 出力数 | 3 |
| Output Current per Channel | 3 A |
| トポロジー | Buck (Step-Down) |
| Automotive Grade | AEC-Q100 Qualified (Q1) |
| 実装タイプ | Surface Mount |
| Application | Radar |
LP87721-Q1 24-vqfn-hr (4x4) ピン配置ガイド
LP87721-Q1 (24-vqfn-hr (4x4) パッケージ) のピン配置。 このパワーデバイスは、ゲート、ドレイン、ソース端子を備えています。非極性パッケージの場合、正確なピン1の向きとフットプリントの詳細については、メーカーのデータシートを参照してください。主な用途には、電源設計、モータ駆動、負荷スイッチングがあります。
詳細なピン配置データはありません: LP87721-Q1.
詳細は データシート をご参照ください。
主な用途
LP87721-Q1 の用途: 6 件s: Automotive Radar, ADAS Power Management, Driver Monitoring Systems, Precision Analog Power Supply, Industrial Radar, Sensor Fusion Systems.
Automotive Radar
The LP87721-Q1 is specifically designed for automotive radar systems, providing three 3A low-noise buck rails to power radar processors and sensor front-ends. Its automotive AEC-Q100 qualification ensures reliable operation in -40C to +125C environments. The low-noise output minimizes interference with sensitive radar signal chains, while the compact VQFN-HR package saves PCB space in radar modules. Used with TI radar processors like TDA4VL21HGAALZRQ1, the PMIC enables a complete power solution for ADAS radar.
おすすめ
ADAS Power Management
In ADAS, the LP87721-Q1 manages multiple power rails for radar, cameras, and processing units. The three 3A buck converters can supply core, I/O, and analog voltages, reducing the number of discrete regulators. Its built-in sequencing prevents power-up errors in multi-rail systems. With a wide input range and automotive qualification, it suits 12V/24V vehicle power buses. The PMIC is a central element in ADAS ECUs, ensuring reliable power delivery under varying load conditions.
おすすめ
Driver Monitoring Systems
Driver monitoring systems (DMS) rely on power rails for sensors, processing, and communication. The LP87721-Q1 offers three 3A low-noise buck channels, ideal for powering always-on infotainment and DMS controllers. Its low-noise output reduces artifacts in sensor signals, improving monitoring accuracy. The AEC-Q100 grade ensures operation across automotive temperature ranges, making it a robust choice for interior sensing. The PMIC's compact size allows integration into space-limited DMS board designs.
おすすめ
Precision Analog Power Supply
Precision analog circuits in radar sensors require clean power supplies to maintain accuracy. The LP87721-Q1's low-noise buck converters provide clean 3A rails for analog front-ends and data converters. Compared to switching regulators, this PMIC reduces noise, but dissipated power depends on voltage drop. Proper filtering and layout are essential to maximize performance. The three-channel design allows dedicated supplies for sensors, amplifiers, and ADCs.
おすすめ
Industrial Radar
Beyond automotive, the LP87721-Q1 is suitable for industrial radar for automation and robotics. Its three 3A rails power radar-based distance sensors and position feedback systems. The wide input voltage tolerance supports industrial power supplies. Though AEC-Q100 qualified for automotive, it can be used in non-automotive harsh environments. The PMIC enables compact controller boards with minimal components, simplifying BOM.
おすすめ
Sensor Fusion Systems
Sensor fusion combines data from multiple sensors, including radar, LiDAR, and cameras. The LP87721-Q1 provides three clean 3A rails to power the fusion processor and peripherals. Its low-noise output ensures data integrity, and the automotive grade supports in-vehicle operation. The PMIC's sequencing feature powers up different domains in a controlled order, preventing initialization issues. This makes it a reliable power backbone for fusion ECUs.
おすすめ
おすすめ製品の概要
エンジニアリング参考データ: LP87721-Q1 — 比較、設計ガイダンス、コンプライアンス情報。
選定ガイド
代替品との比較
| パラメータ | この製品 | LP87725101RAGRQ1 | LP87722-Q1 | LP87723-Q1 | LP87724-Q1 | LP87725-Q1 |
|---|---|---|---|---|---|---|
| Package | 24-VQFN-HR (4x4) | 24-VQFN-HR (4x4) | 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 | Texas Instruments | Texas Instruments |
| Number of Outputs | 3 | 5 | 3 | 3 | 3 | 3 |
| Topology | Buck (Step-Down) | Buck (Step-Down) | Buck (Step-Down) | Buck (Step-Down) | Buck (Step-Down) | Buck (Step-Down) |
| Automotive Grade | AEC-Q100 (Q1) | AEC-Q100 (Q1) | AEC-Q100 (Q1) | AEC-Q100 (Q1) | AEC-Q100 (Q1) | AEC-Q100 (Q1) |
主な差別化要因
- Three dedicated 3A low-noise buck channels （vs TPS659039-Q1)
- AEC-Q100 qualified for automotive （vs LP87702)
- Compact 24-VQFN-HR package （vs TPS65386x-Q1)
設計ノート
The LP87721-Q1 contains three buck converters that can each source 3A; total power dissipation can be significant. Ensure adequate PCB copper area and vias for heat spreading. Use a thermal pad in the VQFN package. Monitor junction temperature; if operating at high ambient, consider reducing load or adding airflow. Verify thermal resistance and derating from the datasheet.
Place input capacitors close to each buck input, and output capacitors close to the inductor outputs. Use a solid ground plane and separate digital and analog grounds if possible. The low-noise channels require careful routing to avoid inductive loops. Follow the reference layout in the TI application note.
Do not ignore the input voltage range; exceeding maximum can damage the IC. Ensure proper power sequencing using the EN pins. Avoid using oversized inductor values that may cause instability. Verify the output voltage divider resistors for accuracy. [DATA_NEEDED: specific sequencing requirements]
コンプライアンス情報
AEC-Q100 qualified per Q1 suffix. RoHS/REACH status not provided in verified data.
