TPS62811QWRWYRQ1 - 1A 6V Automotive Step-Down Buck | TI
部品番号: TPS62811QWRWYRQ1 ✓ 生産中| 数量 | 単価 | 小計 |
|---|---|---|
| 1 | $1.31 | $1.31 |
| 10 | $1.2 | $12.00 |
| 100 | $1.12 | $112.00 |
| 500 | $1.05 | $525.00 |
| 1,000 | $0.98 | $980.00 |
TPS62811QWRWYRQ1 概要
A step-down converter, also called a buck converter, is a type of DC-DC switching regulator that converts a higher input voltage to a lower output voltage with high efficiency by rapidly switching an internal power stage and filtering the result through an inductor and capacitor. Buck converters sit within the power management IC hierarchy (voltage regulator -> switching regulator -> DC-DC converter) and are the workhorses of point-of-load power conversion in automotive and industrial systems, where they routinely exceed 90% efficiency compared with 40-60% for linear regulators.
Key features of the TPS62811QWRWYRQ1 include a wide 2.75 V to 6 V input range that directly supports automotive 5-V and 3.3-V rails and cold-crank-tolerant pre-regulator outputs, a 1-A continuous output current rating, adjustable output voltage from 0.6 V, and adjustable-frequency operation that lets designers trade switching loss against passive-component size. The wettable-flank QFN package enables reliable solder-joint inspection (AOI) required in automotive manufacturing.
Architecturally, the device belongs to the TPS6281x-Q1 family, which shares the DCS-Control style control topology known for fast, stable transient response with small output capacitance; the datasheet details compensation settings and output-capacitor ranges (for example, minimum capacitance values rising for outputs below 1 V on related family members such as TPS62810-Q1 and TPS62813-Q1).
Typical applications include automotive ADAS camera and sensor module point-of-load rails, infotainment and cluster supplies fed from 5-V rails, and industrial systems requiring AEC-Q100 Grade 1 robustness at -40C to +125C ambient.
Design consideration: because this is a switching regulator, PCB layout matters - keep the input capacitor, inductor, and SW/GND loops tight and place feedback traces away from the switch node for best output ripple and stability.
This page adds value beyond the TI datasheet by synthesizing distributor pricing, drop-in family alternatives, design notes, and AEO-optimized FAQ content in one place. Pricing reflects data as of 2026-10-13.
ドロップイン代替品: TPS62811QWRWYRQ1 — 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: TPS62811QWRWYRQ1 （同一形状・フットプリント） — 相違点: Operating Temperature, Package, RoHS Status, Topology.
クイック比較ツール — 並列比較する代替部品を選択:
TPS62810QWRWYRQ1
✅ ドロップイン ⚠️ 仕様未検証✓ 在庫あり
$1.02 / 個
データシートを見る →TPS62812QWRWYRQ1
✅ ドロップイン ⚠️ 仕様未検証📋 参考代替品（カタログ未掲載）
TPS62813QWRWYRQ1
✅ ドロップイン ⚠️ 仕様未検証📋 参考代替品（カタログ未掲載）
TPS628112MQWRWYRQ1
✅ ドロップイン📋 参考代替品（カタログ未掲載）
TPS62811QWRWYRQ1 最大定格＆電気的特性
| トポロジー | Step-down (buck) switching regulator, DCS-Control style |
| 入力電圧範囲 | 2.75 V to 6 V |
| Output Current | 1 A |
| 出力数 | 1 |
| 出力タイプ | Positive, adjustable |
| Minimum Output Voltage | 0.6 V |
| Automotive Qualification | AEC-Q100 qualified (Q1) |
| 動作温度 | -40C to +125C |
| パッケージ | 9-VFQFN (RWY), wettable flanks, 2 mm x 3 mm |
| 実装タイプ | Surface Mount |
| Application Segment | Automotive |
| RoHS ステータス | Compliant (per TI product page) |
| Switching Regulator Family | TPS6281x-Q1 (2.75-V to 6-V, adjustable-frequency) |
TPS62811QWRWYRQ1 9-vfqfn (rwy), wettable flanks, 2 mm x 3 mm ピン配置ガイド
TPS62811QWRWYRQ1 (9-vfqfn (rwy), wettable flanks, 2 mm x 3 mm 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: TPS62811QWRWYRQ1.
詳細は データシート をご参照ください。
主な用途
TPS62811QWRWYRQ1 の用途: 6 件s: Automotive ADAS Camera Modules, Automotive Infotainment and Cluster Supplies, Body Electronics and Lighting Modules, Industrial Point-of-Load Power, Telematics and Gateway Modules, Battery-Powered Portable and IoT Devices.
Automotive ADAS Camera Modules
The TPS62811QWRWYRQ1 fits ADAS camera point-of-load supplies because it is AEC-Q100 qualified, operates from -40C to +125C, and is packaged in a 2 mm x 3 mm wettable-flank QFN that passes automotive AOI solder inspection. Powered from a 5-V camera module rail, it steps down to sensor core or SERDES auxiliary voltages as low as 0.6 V at up to 1 A. Adjustable-frequency operation allows designers to shift switching harmonics away from image-sensor readout bands, reducing visible banding artifacts. Its small footprint and minimal external component count suit the tight space constraints of camera module flex circuits and compact housings.
おすすめ
Automotive Infotainment and Cluster Supplies
In infotainment and instrument-cluster electronics, 5-V and 3.3-V intermediate buses feed many low-voltage point-of-load rails. The TPS62811QWRWYRQ1 accepts 2.75 V to 6 V at the input and delivers up to 1 A at outputs from 0.6 V, covering processor I/O, memory, and audio DAC auxiliary rails. AEC-Q100 Grade 1 temperature capability (-40C to +125C) meets cockpit environmental requirements, while the adjustable-frequency feature helps avoid interference with radio tuners and audio circuits. The wettable-flank QFN package supports the automated optical inspection mandated by automotive assembly lines, reducing manufacturing escapes on high-volume cluster boards.
おすすめ
Body Electronics and Lighting Modules
Body control modules, lighting drivers, and gateways are populated with many small point-of-load converters fed from pre-regulated 5-V rails. The TPS62811QWRWYRQ1's 1-A output and 0.6-V adjustable output cover microcontroller core rails, transceiver supplies, and LED-driver controller rails within these modules. Its automotive qualification and wettable-flank package satisfy OEM sourcing and manufacturing requirements, and the adjustable-frequency operation lets system engineers choose switching frequencies that avoid AM-band interference in lighting applications. The 2 mm x 3 mm footprint and simple external BOM keep module cost and board area low even at high volumes.
おすすめ
Industrial Point-of-Load Power
Industrial PLCs, motor-drive control cards, and factory automation modules commonly regulate 5-V intermediate rails down to processor and ASIC core voltages. The TPS62811QWRWYRQ1 delivers up to 1 A from a 2.75-V to 6-V input with outputs from 0.6 V, and its -40C to +125C operation covers industrial ambient extremes even though its qualification is automotive. The DCS-Control-style architecture of the TPS6281x-Q1 family provides fast transient response with small ceramic output capacitance, which is valuable when powering FPGAs and DSPs with bursty load profiles. Adjustable-frequency operation allows avoidance of sensitive sensing or communication frequency bands on mixed-signal boards.
おすすめ
Telematics and Gateway Modules
Telematics control units and vehicle gateways combine cellular modems, processors, and CAN/Ethernet transceivers, each needing clean local rails from a 5-V intermediate bus. The TPS62811QWRWYRQ1 supplies up to 1 A with an adjustable output down to 0.6 V, suiting modem core rails and transceiver supplies. Its AEC-Q100 qualification and wettable-flank QFN satisfy automotive quality flows, while adjustable-frequency operation lets designers place the switching frequency away from GPS and cellular receive bands to protect receiver sensitivity. The compact 2 mm x 3 mm package fits the dense, multilayer boards typical of connected-vehicle electronics.
おすすめ
Battery-Powered Portable and IoT Devices
Battery packs built from one or two lithium cells (2.5 V to 4.2 V per cell after regulation to 5 V, or direct 3.7-V buses) fall comfortably inside the 2.75-V to 6-V input range of the TPS62811QWRWYRQ1. Although this variant is automotive qualified, the same silicon family serves portable IoT gateways and industrial handhelds that reuse automotive-provided designs. The 1-A rating supports wireless module transmit bursts, and adjustable-frequency operation can be set for high light-load efficiency or small magnetics. The 0.6-V minimum output covers modern low-voltage MCU cores, and the small 2 mm x 3 mm QFN suits space-limited wearable and tracker form factors.
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: TPS62811QWRWYRQ1 — 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 | TPS628112MQWRWYRQ1 | TPS62810QWRWYRQ1 | TPS62812QWRWYRQ1 | TPS62813QWRWYRQ1 |
|---|---|---|---|---|---|
| Package | 9-VFQFN wettable flanks (RWY, 2x3 mm) | 9-VFQFN wettable flanks (RWY) - same | 9-VFQFN wettable flanks (RWY) - same | 9-VFQFN wettable flanks (RWY) - same | 9-VFQFN wettable flanks (RWY) - same |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Input Voltage Range | 2.75 V to 6 V | 2.75 V to 6 V | 2.75 V to 6 V | 2.75 V to 6 V | 2.75 V to 6 V |
| Automotive Qualification | AEC-Q100 (Q1) | AEC-Q100 (Q1) | AEC-Q100 (Q1) | AEC-Q100 (Q1) | AEC-Q100 (Q1) |
| Switching Frequency | Adjustable (adjustable-frequency family) | Adjustable | Adjustable | Adjustable | Adjustable |
| Min Output Capacitance (below 1 V, per datasheet note) | Per TPS6281x-Q1 Table 8-1/8-2 compensation ranges | Per Table 8-1/8-2 | 32 uF at 1 V to 53 uF at 0.6 V (smallest-cap compensation) | Per Table 8-1/8-2 | 32 uF at 1 V to 53 uF at 0.6 V (smallest-cap compensation) |
主な差別化要因
- Balanced 1-A current rating minimizes cost and size （vs TPS62810QWRWYRQ1)
- Wettable-flank QFN enables AOI in automotive production （vs TPS62901RPJR)
- Adjustable output from 0.6 V adds design flexibility （vs TPS62813QWRWYRQ1)
設計ノート
For the 9-pin wettable-flank QFN, place the input capacitor within 2 mm of VIN/PGND and the inductor directly at the SW pin to minimize the hot loop; this directly reduces switching-ringing and EMI. Connect the exposed thermal pad and PGND to a solid ground plane with a minimum 5x5 via array for heat spreading. Take the feedback sense trace from a quiet point at the output capacitor, routed on an inner layer away from SW. Copy the TPS6281x-Q1 EVM layout from the TI datasheet for best results.
Estimated: at VIN = 5 V, VOUT = 1.2 V, and 1 A load, output power is 1.2 W; assuming ~90% efficiency for a buck of this class, input current is roughly 0.27 A and device dissipation about 0.13 W, comfortably within the 2x3 mm QFN thermal capability on a standard 4-layer board. Verify efficiency and junction temperature with the datasheet curves at your exact operating point rather than relying on this estimate.
Do not exceed the 6-V VIN absolute rating - automotive 12-V lines need an upstream pre-regulator or protection stage. Select the compensation/output-capacitance setting per TPS6281x-Q1 datasheet Table 8-1/8-2; using insufficient ceramic output capacitance (especially below 1-V outputs, where minimums rise toward 53 uF at 0.6 V on related family members) causes instability. Ensure wettable-flank solder fillets are inspected, since QFN side-joints are otherwise invisible. When substituting TPS62810/62812/62813 variants, re-check current grade and output-voltage configuration before layout release.
コンプライアンス情報
AEC-Q100 automotive qualification confirmed by TI product page and 'Q1' suffix. RoHS/lead-free inferred from TI standard product page status; REACH and halogen-free status should be confirmed on the TI quality portal.
