TPS70950DBVR - 150mA, 30V Ultra-Low IQ LDO Regulator | Texas Instruments
部品番号: TPS70950DBVR ✓ 生産中| 数量 | 単価 | 小計 |
|---|---|---|
| 1 | $1.05 | $1.05 |
| 10 | $0.92 | $9.20 |
| 100 | $0.74 | $74.00 |
| 500 | $0.59 | $295.00 |
| 1,000 | $0.48 | $480.00 |
| 3,000 | $0.39 | $1,170.00 |
TPS70950DBVR 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 only slightly above the output. LDOs sit within the broader hierarchy of linear regulators -> voltage regulators -> power management ICs -> semiconductors. Unlike switching regulators, LDOs do not introduce EMI but dissipate the difference (VIN - VOUT) * IOUT as heat. They are preferred where low noise, simplicity, and fast transient response are critical.
The TPS70950DBVR delivers 150 mA continuous output current, has a typical dropout of 690 mV at full load, and offers integrated thermal shutdown plus current-limit protection. The SOT-23-5 footprint (2.9 mm x 1.6 mm) makes it one of the smallest wide-input LDOs available, ideal for space-constrained industrial and battery-powered designs.
Architecturally, the part uses a PMOS pass element, which lowers ground-pin current to a minimum and enables true reverse-current blocking without a secondary diode. The 1 uA IQ makes the TPS70950DBVR well-suited to always-on, standby, or sleep-mode rails in IoT, metering, and remote-sensor applications.
Typical applications include battery-powered IoT sensors, PLC analog I/O modules, portable medical monitors, smart meters, and post-regulation of switching converters where a clean 5V rail is required. The wide input range also allows direct connection to 12V/24V industrial bus rails.
When designing with this device, place a 1 uF or larger ceramic input capacitor close to IN, and a 1 uF or larger low-ESR ceramic output capacitor close to OUT. Account for dropout at the worst-case 150 mA load and the lowest VIN in your system; for a 5V output from a battery below 5.69V the regulator will drop out of regulation.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet. Engineers searching for a wide-VIN, ultra-low-IQ 5V LDO in SOT-23-5 will find the TPS70950DBVR datasheet, parameters, and verified alternatives below.
ドロップイン代替品: TPS70950DBVR — 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: TPS70950DBVR （同一形状・フットプリント） — 相違点: Package, Input Voltage Range, MSL Level, Operating Temperature Range, Dropout Voltage.
クイック比較ツール — 並列比較する代替部品を選択:
TPS70950DBVT
✅ ドロップイン📋 参考代替品（カタログ未掲載）
TPS70950QDBVRQ1
✅ ドロップイン📋 参考代替品（カタログ未掲載）
TPS709B50DBVR
✅ ドロップイン📋 参考代替品（カタログ未掲載）
TPS70933DBVR
✅ ドロップイン ⚠️ 仕様未検証📋 参考代替品（カタログ未掲載）
TPS70925DBVR
✅ ドロップイン ⚠️ 仕様未検証📋 参考代替品（カタログ未掲載）
TPS70930DBVR
✅ ドロップイン ⚠️ 仕様未検証📋 参考代替品（カタログ未掲載）
TPS70950DBVR 最大定格＆電気的特性
| Manufacturer | Texas Instruments |
| Series | TPS709 |
| 出力タイプ | Fixed |
| Output Voltage (Nominal) | 5.0 V |
| 入力電圧範囲 | 2.7 V to 30 V |
| 最大出力電流 | 150 mA |
| Dropout Voltage (Typical) | 690 mV at 150 mA |
| Quiescent Current (Typical) | 1 uA |
| Output Accuracy | 2% over temperature |
| イネーブルピン | Yes (active-low) |
| Reverse Current Protection | Yes |
| 熱シャットダウン | Yes |
| 電流制限 | Yes |
| 動作温度範囲 | -40 C to +125 C |
| パッケージ | SOT-23-5 (DBV) 2.9 mm x 1.6 mm |
| 実装タイプ | Surface Mount |
| MSLレベル | 1 (unlimited) |
| RoHS ステータス | Compliant |
TPS70950DBVR ピン構成
| ピン 1 | IN — Input voltage supply (2.7V to 30V) |
| ピン 2 | GND — Ground |
| ピン 3 | EN — Enable pin (active-low, internal pull-down) |
| ピン 4 | NC — Not connected (per datasheet) |
| ピン 5 | OUT — Regulated output voltage (5.0V fixed) |
主な用途
TPS70950DBVR の用途: 6 件s: Battery-Powered IoT Sensor Nodes, Industrial 24V Bus Analog I/O, Post-Regulator After Switching Converter, Smart Metering and Utility Monitoring, Portable Medical Monitoring Devices, Always-On Standby Rails in Appliances.
Battery-Powered IoT Sensor Nodes
The TPS70950DBVR is ideal for battery-powered IoT sensor nodes that spend most of their life in sleep mode. Its 1 uA quiescent current means the regulator contributes almost nothing to standby drain - a coin cell powering a sensor duty-cycled 0.1% of the time can last years. The 30 V input tolerates charging transients, and the 150 mA output can power an MCU + radio combo when the sensor wakes. Place 1 uF ceramic caps on IN and OUT within 5 mm of the pins for noise immunity.
おすすめ
Industrial 24V Bus Analog I/O
Industrial PLC analog input modules need a clean, low-noise 5V rail derived directly from the 24V bus. The TPS70950DBVR accepts 2.7V to 30V input, allowing direct connection to a 24V supply without a pre-regulator. Its 1 uA IQ does not load the bus when the module is in standby. The 5V fixed output powers op-amps, ADC references, and 4-20 mA loop interfaces. Reverse-current blocking prevents backflow when the bus is hot-swapped.
おすすめ
Post-Regulator After Switching Converter
Use the TPS70950DBVR as a post-regulator downstream of a switching DC-DC converter to remove switching noise from sensitive analog rails. The switching converter handles the bulk voltage step-down efficiently, while the TPS709 cleans up residual ripple with its high PSRR. At 150 mA and 5 V output, it can power op-amps, sensors, or reference circuits. The 30 V input covers the typical 12 V or 24 V intermediate bus.
おすすめ
Smart Metering and Utility Monitoring
Smart electricity meters require a 5 V rail for the metrology IC and MCU, often powered from 12-24 V AC-derived DC buses. The TPS70950DBVR's 30 V input range accommodates wide rectified bus variations. Its 1 uA IQ extends battery-backed RTC life during power outages. Reverse-current protection prevents the metrology IC from back-driving the bus during maintenance. The SOT-23-5 package fits in the cramped meter enclosure.
おすすめ
Portable Medical Monitoring Devices
Portable patient monitors (pulse oximeters, glucose meters, ECG patches) need ultra-low standby drain and a clean rail for the analog front end. The TPS70950DBVR's 1 uA IQ keeps battery life long, while its low noise floor avoids contaminating low-amplitude analog signals. The wide VIN range accepts various battery chemistries (2x AA, Li-ion, coin cells with boost). The small SOT-23-5 footprint enables wearable form factors.
おすすめ
Always-On Standby Rails in Appliances
White goods and HVAC appliances need an always-on 5 V standby rail to power the control MCU and wireless module even when the main converter is off. The TPS70950DBVR's 1 uA IQ draws negligible power from the auxiliary winding. Its 30 V input handles rectified mains-derived rails. The enable pin allows the main MCU to power down the TPS709 when the appliance is in deep standby, further reducing consumption.
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: TPS70950DBVR — 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 | TPS70950DBVT | TPS70950QDBVRQ1 | TPS709B50DBVR | TPS70933DBVR |
|---|---|---|---|---|---|
| Package | SOT-23-5 (DBV) | SOT-23-5 (DBV) - same | SOT-23-5 (DBV) - same | SOT-23-5 (DBV) - same | SOT-23-5 (DBV) - same |
| Brand | Texas Instruments | Texas Instruments - same | Texas Instruments - same | Texas Instruments - same | Texas Instruments - same |
| Output Voltage | 5.0 V | 5.0 V | 5.0 V | 5.0 V | 3.3 V |
| Output Current | 150 mA | 150 mA | 150 mA | 150 mA | 150 mA |
| Input Voltage Range | 2.7 V to 30 V | 2.7 V to 30 V | 2.7 V to 30 V | 2.7 V to 30 V | 2.7 V to 30 V |
| Quiescent Current | 1 uA | 1 uA | 1 uA | 1 uA | 1 uA |
| Automotive Grade (AEC-Q100) | No | No | Yes (AEC-Q100) | No | No |
| Reel Format | Standard 7-inch reel (-R suffix) | Larger reel (-T suffix) | Standard 7-inch reel | Smaller reel format | Standard 7-inch reel |
主な差別化要因
- Wide 30V input range in SOT-23-5 footprint （vs TPS70933DBVR)
- Ultra-low 1 uA quiescent current （vs LM1117)
- Integrated reverse-current protection （vs MIC5205)
設計ノート
Place a 1 uF or larger ceramic capacitor on IN (within 5 mm) and a 1 uF or larger low-ESR ceramic capacitor on OUT (within 5 mm). According to the TI TPS709 datasheet, the output capacitor ESR must be below 200 mOhm to maintain loop stability. X5R or X7R dielectric is recommended. Account for DC bias derating - a 10 uF 0805 ceramic can lose 60% of its rated capacitance at 5 V bias.
At VIN=24V, VOUT=5V, and full 150 mA load, the TPS70950DBVR dissipates approximately (24-5)*0.150 = 2.85 W. The SOT-23-5 package has a theta_JA of approximately 200 C/W on a standard JEDEC 2-layer board, leading to a junction temperature rise of 570 C above ambient - well above the 125 C limit. For industrial 24 V bus applications, either derate to <50 mA, reduce VIN with a pre-regulator, or use the TPS709 in the larger WSON package.
Route the EN trace away from noisy switching nodes. The EN pin has an internal pull-down, so leaving it floating disables the regulator. To enable at power-up, either tie EN directly to IN or drive it from an MCU GPIO. For reverse-current protection to function correctly, do not place a diode or series resistance between OUT and the load that could create a back-flow path.
Do not exceed the 30 V absolute maximum VIN - even brief transients from load-dump or hot-plug events can destroy the part. Add a TVS diode or input clamp for automotive 24V bus applications. The NC pin (pin 4) is not internally connected; do not use it as a thermal via connection because the die is bonded only to the lead frame. Output current above 150 mA triggers current-limit foldback, not constant current - sustained overcurrent will heat the part into thermal shutdown.
コンプライアンス情報
Standard TPS70950DBVR is not AEC-Q100 qualified; choose TPS70950QDBVRQ1 for automotive. RoHS and lead-free compliant per TI product page.
