TPS7B8233EPWPRQ1 - 300mA 40V Automotive LDO Regulator | TI
部品番号: TPS7B8233EPWPRQ1 ✓ 生産中| 数量 | 単価 | 小計 |
|---|---|---|
| 1 | $5.39 | $5.39 |
| 10 | $4.85 | $48.50 |
| 100 | $4.31 | $431.00 |
| 500 | $3.88 | $1,940.00 |
| 1,000 | $3.45 | $3,450.00 |
TPS7B8233EPWPRQ1 概要
An LDO (low-dropout) linear regulator is a type of voltage regulator that maintains a stable output voltage even when the input voltage is close to the output voltage, distinguished from standard regulators by its low headroom requirement. Within the broader taxonomy, this part is a linear regulator (non-switching), which is itself a sub-category of voltage regulators under the power management IC hierarchy. Unlike DC-DC switching converters, an LDO produces no EMI switching noise but dissipates the VIN-VOUT differential as heat, making it ideal for noise-sensitive analog and microcontroller rails.
Key features include a 475 mV typical dropout at 200 mA load, 60 dB PSRR at 100 Hz, integrated over-current protection (OCP) and over-temperature protection (OTP), and AEC-Q100 qualification for automotive use. The 14-pin HTSSOP-EP package with an exposed thermal pad provides a low thermal resistance path for sustained 300-mA delivery.
The TPS7B8233EPWPRQ1 uses a PNP-pass architecture combined with a precision bandgap reference, enabling wide input operation (3V to 40V) and tight output accuracy across the -40°C to +150°C junction temperature range. The ultra-low IQ architecture ensures minimal battery drain in standby modes required by ISO 7637-2 and OEM always-on specifications.
Typical applications include automotive body control modules, infotainment standby rails, instrument cluster MCUs, lighting controllers, and gateway/ECU power domains. The fixed 3.3V output specifically targets microcontrollers, CAN transceivers, and sensor interfaces that require a stable logic rail directly from the 12V battery bus.
When designing with this part, place the input and output capacitors close to the IC and ensure the PCB thermal pad is properly soldered with adequate vias for heat extraction. Designers must also budget for worst-case 40V transient operation during load-dump events.
This page synthesizes distributor pricing, AEC-Q100-qualified drop-in options, and practical thermal/PCB design notes not consolidated on the manufacturer datasheet, providing engineers a faster path to a production-ready off-battery 3.3V rail.
ドロップイン代替品: TPS7B8233EPWPRQ1 — 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。
クイック比較ツール — 並列比較する代替部品を選択:
TPS7B8250EPWPRQ1
✅ ドロップイン📋 参考代替品（カタログ未掲載）
TPS7B8233EPWPRQ1 最大定格＆電気的特性
| 出力タイプ | Fixed |
| 出力電圧 | 3.3 V |
| Output Current (Maximum) | 300 mA |
| 入力電圧範囲 | 3 V to 40 V (45 V load-dump tolerant) |
| ドロップアウト電圧 | 475 mV (typical at 200 mA) |
| Quiescent Current (IQ) | 6.5 µA (typical) |
| PSRR | 60 dB at 100 Hz |
| 動作接合温度 | -40°C to +150°C |
| パッケージ | HTSSOP-14 (PWP) with exposed pad |
| 実装タイプ | Surface Mount |
| 出力数 | 1 |
| Polarity | Positive |
| Protection Features | Over-Current Protection (OCP), Over-Temperature Protection (OTP) |
| AEC-Q100 Qualification | Qualified (Automotive Grade) |
| RoHS ステータス | Compliant |
TPS7B8233EPWPRQ1 ピン構成
| ピン 1 | NC — Not connected (per datasheet) |
| ピン 2 | IN — Input voltage supply (3V to 40V) |
| ピン 3 | IN — Input voltage supply |
| ピン 4 | NC — Not connected |
| ピン 5 | EN — Enable input |
| ピン 6 | NC — Not connected |
| ピン 7 | NC — Not connected |
| ピン 8 | GND — Ground |
| ピン 9 | NC — Not connected |
| ピン 10 | NC — Not connected |
| ピン 11 | OUT — Regulated output voltage (3.3V) |
| ピン 12 | OUT — Regulated output voltage |
| ピン 13 | NC — Not connected |
| ピン 14 | NC — Not connected |
主な用途
TPS7B8233EPWPRQ1 の用途: 6 件s: Automotive Body Control Modules (BCM), Instrument Cluster Microcontroller Power, Automotive Lighting Controllers, Infotainment Standby Rails, Automotive Gateway / ECU Power, Sensor Interface Modules.
Automotive Body Control Modules (BCM)
The TPS7B8233EPWPRQ1 is well-suited for BCM power rails due to its 300-mA output, 40V continuous input, and AEC-Q100 Grade 1 qualification. The 6.5 µA ultra-low quiescent current minimizes battery drain during key-off periods lasting weeks, while the 45V load-dump tolerance protects against jump-start transients. The 3.3V fixed output directly powers BCM microcontrollers, CAN/LIN transceivers, and relay drivers. Designers benefit from OCP and OTP features that safeguard the BCM against fault conditions such as output shorts or thermal runaway in sealed under-dash enclosures.
おすすめ
Instrument Cluster Microcontroller Power
Instrument clusters require a clean, stable 3.3V rail for the graphics MCU and display drivers. The TPS7B8233EPWPRQ1's 60 dB PSRR at 100 Hz filters battery-bus noise that could otherwise cause display flicker or ADC reading errors. Its 475 mV dropout at 200 mA ensures the cluster remains powered during cold-crank events when the battery sags to 6V-7V. The AEC-Q100 qualification and -40°C to +150°C junction temperature range ensure reliable operation across all automotive environmental conditions including under-dash thermal stress.
おすすめ
Automotive Lighting Controllers
Exterior lighting modules (headlamps, tail lamps) require robust 3.3V rails for LED driver ICs and communication transceivers. The TPS7B8233EPWPRQ1 delivers up to 300 mA from a wide 3V-40V input, tolerating the harsh electrical environment of automotive body wiring. The exposed thermal pad of the HTSSOP-14 package enables sustained 300-mA delivery in sealed lamp housings where ambient temperatures can exceed 85°C. AEC-Q100 Grade 1 qualification ensures the lighting controller operates reliably across the vehicle lifetime.
おすすめ
Infotainment Standby Rails
Infotainment head units require an always-on 3.3V rail to maintain system memory and respond to wake-up commands. The TPS7B8233EPWPRQ1's 6.5 µA IQ is critical for meeting stringent OEM standby current budgets while keeping the CAN bus transceiver active. The wide 3V-40V input allows direct connection to the battery bus without a pre-regulator. Integrated OTP prevents thermal damage if the head unit is operated in confined spaces with limited airflow.
おすすめ
Automotive Gateway / ECU Power
Central gateway ECUs that bridge between powertrain, body, and chassis domains need multiple isolated voltage rails. The TPS7B8233EPWPRQ1 serves as a local 3.3V post-regulator after a front-end DC-DC converter or as a direct off-battery supply for low-power sections. Its 40V input and load-dump tolerance protect the gateway from transient events on the battery bus, while AEC-Q100 qualification satisfies the reliability requirements of centralized vehicle architectures.
おすすめ
Sensor Interface Modules
Automotive sensor modules (parking sensors, radar, occupancy detection) operate from the 12V battery bus and require clean 3.3V rails for analog front-ends and digital processors. The TPS7B8233EPWPRQ1's 60 dB PSRR attenuates battery-bus interference that could couple into sensitive analog measurements. The ultra-low 6.5 µA IQ extends battery life in modules that remain partially active during key-off for security and diagnostic polling.
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: TPS7B8233EPWPRQ1 — 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 | TPS7B8233QDGNRQ1 | TPS7B8250EPWPRQ1 |
|---|---|---|---|
| Package | HTSSOP-14 (PWP) | 8-HVSSOP (DGN) - different | HTSSOP-14 (PWP) - same |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments |
| Output Voltage | 3.3 V | 3.3 V | 5.0 V |
| Output Current | 300 mA | 300 mA | 300 mA |
| Input Voltage Range | 3 V to 40 V | 3 V to 40 V | 3 V to 40 V |
| Quiescent Current | 6.5 µA | 6.5 µA | 6.5 µA |
| Dropout Voltage (typ at 200 mA) | 475 mV | 475 mV | 475 mV |
| PSRR at 100 Hz | 60 dB | 60 dB | 60 dB |
| AEC-Q100 Grade | Grade 1 (-40°C to +150°C Tj) | Grade 1 | Grade 1 |
| Pin-to-Pin Compatible | Yes (reference) | No (different package) | Yes (same HTSSOP-14) |
主な差別化要因
- Fixed 3.3V output eliminates external feedback resistors （vs TPS7B8250EPWPRQ1)
- Wider package offering within TPS7B82-Q1 family （vs TPS7B8233QDGNRQ1)
- Ultra-low 6.5 µA IQ for always-on automotive applications （vs Standard 40V LDOs from competitors)
設計ノート
At VIN=12V, VOUT=3.3V, and full 300-mA load, power dissipation is approximately (12-3.3) × 0.3 = 2.61 W. The HTSSOP-14 exposed pad has a typical theta_JA around 35°C/W on a 4-layer JEDEC board, resulting in a ~91°C junction temperature rise above 25°C ambient. Designers must solder the exposed pad to a copper pour with thermal vias (recommended 0.3 mm drill, 1 mm pitch, 4-6 vias minimum) to achieve rated thermal performance. In sealed enclosures exceeding 70°C ambient, derate to 200 mA or implement additional heat-sinking.
Place input and output capacitors as close to the IC pins as possible to minimize parasitic inductance. Use a 1 µF X7R ceramic capacitor on the input and a 2.2 µF X7R ceramic capacitor on the output (per TI datasheet recommendations). For load-dump transients up to 45V, add a TVS diode such as SMAJ40CA at the input. Keep the ground plane intact under the IC and connect the exposed pad with multiple thermal vias to inner ground layers for optimal heat spreading.
Do not exceed the absolute maximum input voltage of 45V (including load-dump). Verify the enable pin logic level matches your MCU GPIO - the TPS7B82-Q1 EN pin thresholds may differ from standard 3.3V logic if not configured properly. Do not operate without the exposed pad soldered, as this will trigger thermal shutdown under normal loads. For always-on applications, ensure the IQ budget accounts for total system standby including the LDO's 6.5 µA contribution across all rails.
コンプライアンス情報
AEC-Q100 Grade 1 qualified for automotive applications. RoHS and REACH compliant per JLCPCB and LCSC distributor listings. Halogen-free status not explicitly stated in verified data.
