TPS71825-12DRVT - 200mA Dual-Output Low-Noise LDO | Texas Instruments
部品番号: TPS71825-12DRVT ✓ 生産中| 数量 | 単価 | 小計 |
|---|---|---|
| 1 | $1.85 | $1.85 |
| 10 | $1.65 | $16.50 |
| 100 | $1.42 | $142.00 |
| 500 | $1.21 | $605.00 |
| 1,000 | $1.05 | $1,050.00 |
TPS71825-12DRVT 概要
What is an LDO (Low-Dropout) linear regulator? An LDO is a type of linear voltage regulator that maintains a stable, low-noise output voltage even when the input voltage is only marginally higher than the output. LDO regulators sit within a system hierarchy: they are a sub-category of linear regulators, which in turn belong to voltage regulators, the foundation of power management ICs in any electronic system. Unlike switching converters, LDOs do not introduce switching ripple, making them ideal for analog, RF, and audio power rails.
Key features of the TPS71825-12DRVT include high power-supply rejection ratio (PSRR), low output noise, fast start-up, and an active-high enable pin for individual rail sequencing or shutdown. The integrated discharge and soft-start functions limit inrush current at power-on. The TPS718xx family's small WSON-6 footprint combined with dual outputs makes it especially attractive for space-constrained portable designs that need two low-noise rails simultaneously.
Architecturally, the device uses a PMOS pass-element topology per rail, which contributes to its low dropout and low quiescent current behavior. The high PSRR reduces residual ripple from upstream DC-DC converters, while the low output noise floor preserves signal integrity in analog and RF signal chains that share the same battery or bus.
Typical applications include smartphone RF transceiver power, portable media players, wireless sensor nodes, camera modules requiring dual-rail analog and digital supplies, handheld medical monitors, and any battery-powered system requiring two low-noise rails from a single chip.
When designing with this part, place input and output capacitors as close to the IC as possible, use low-ESR ceramic capacitors on each output, and respect the 230 mV dropout headroom at maximum load to maintain full regulation.
This page synthesizes distributor pricing, dual-rail drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.
ドロップイン代替品: TPS71825-12DRVT — 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: TPS71825-12DRVT （同一形状・フットプリント） — 相違点: MSL Level, Operating Temperature Range, Output Type, Package, Regulator Type.
クイック比較ツール — 並列比較する代替部品を選択:
TPS71825-12DRVR
✅ ドロップイン📋 参考代替品（カタログ未掲載）
TPS71833-18DRVT
✅ ドロップイン📋 参考代替品（カタログ未掲載）
TPS71828-15DRVT
✅ ドロップイン ⚠️ 仕様未検証📋 参考代替品（カタログ未掲載）
TPS71801DRVT
✅ ドロップイン ⚠️ 仕様未検証📋 参考代替品（カタログ未掲載）
TPS71830-33DRVT
✅ ドロップイン ⚠️ 仕様未検証📋 参考代替品（カタログ未掲載）
TPS71825-12DRVT 最大定格＆電気的特性
| Regulator Type | LDO (Low-Dropout) Linear Regulator, Dual Channel |
| 出力数 | 2 (Fixed: 2.5 V and 1.2 V) |
| Output Voltage 1 | 2.5 V |
| Output Voltage 2 | 1.2 V |
| Maximum Output Current (per channel) | 200 mA |
| 入力電圧範囲 | 2.7 V to 6.5 V |
| ドロップアウト電圧 | 230 mV at 200 mA |
| 出力タイプ | Fixed (Positive) |
| PSRR | High PSRR (see datasheet for frequency curves) |
| 出力ノイズ | Low noise (see datasheet for uVrms spec) |
| イネーブルピン | Yes (active-high) |
| 動作温度範囲 | -40C to +125C |
| パッケージ | 6-pin WSON (DRV), 2 mm x 2 mm |
| 実装タイプ | Surface Mount |
| MSLレベル | 1 (unlimited floor life at <30C / 85% RH) |
| RoHS ステータス | Compliant |
| Lead-Free | Yes |
TPS71825-12DRVT ピン構成
| ピン 1 | IN — Input voltage supply (2.7 V to 6.5 V) |
| ピン 2 | GND — Ground reference |
| ピン 3 | EN — Active-high enable for both outputs |
| ピン 4 | OUT1 — Regulated 2.5 V output, 200 mA |
| ピン 5 | OUT2 — Regulated 1.2 V output, 200 mA |
| ピン 6 | NC — Not connected (per datasheet) |
主な用途
TPS71825-12DRVT の用途: 6 件s: Smartphone RF Transceiver Power, Portable Media Player / Wearable Audio, Wireless Sensor Node / IoT Edge Device, Camera Module Analog + Digital Rails, Handheld Medical Monitor, Industrial Sensor Module / PLC I/O Card.
Smartphone RF Transceiver Power
The TPS71825-12DRVT suits smartphone RF transceiver power because it provides two clean, low-noise rails (1.2 V for the RF transceiver core and 2.5 V for the RF front-end bias or DAC reference) from one tiny WSON-6 footprint. The high PSRR rejects residual switching ripple from the upstream PMIC's DC-DC converters, while the 230 mV dropout preserves regulation when the Li-Ion battery droops toward 3.0 V. Its 200 mA per-channel capability covers typical RF transmit bursts after input decoupling, and the active-high EN simplifies power-up sequencing with the rest of the radio chain.
おすすめ
Portable Media Player / Wearable Audio
The TPS71825-12DRVT is well matched to portable media player and wearable audio designs needing simultaneous low-noise analog and digital rails. The 2.5 V output drives a low-power audio codec AVDD with clean DC, while the 1.2 V output supplies the DSP core. Together they eliminate board space that would otherwise be used by two single-output LDOs. The 2 mm x 2 mm WSON-6 footprint fits under BGA codecs, and the low quiescent current helps extend battery life between charges.
おすすめ
Wireless Sensor Node / IoT Edge Device
In wireless sensor nodes, the TPS71825-12DRVT powers both the MCU core and a low-power radio from a single CR2032 or Li-Ion source. Its 2.7 V minimum input allows direct connection to a fresh CR2032 cell (3.0 V) and adequate regulation down to 2.8 V under load. The 200 mA current capability per channel comfortably handles radio transmit peaks while the high PSRR ensures the sensor ADC reference is not corrupted by digital switching noise on the same board.
おすすめ
Camera Module Analog + Digital Rails
Compact camera modules commonly require a 2.5 V analog rail for the image sensor and a 1.2 V digital rail for the image processor interface. The TPS71825-12DRVT delivers both from one chip, helping fit the LDO alongside the small image sensor module. The high PSRR provides clean power to the analog rail where pixel noise directly impacts image quality, and the low output noise floor protects ADC dynamic range.
おすすめ
Handheld Medical Monitor
Handheld medical monitors such as pulse oximeters or glucose meters demand two stable, low-noise rails from a single battery source for sensor excitation and ADC reference. The TPS71825-12DRVT provides 2.5 V for the analog front-end and 1.2 V for the low-power MCU, with the high PSRR ensuring measurement accuracy is not degraded by upstream switching artifacts. Compliance with RoHS and the wide -40C to +125C operating range support harsh handheld environments.
おすすめ
Industrial Sensor Module / PLC I/O Card
Industrial PLC I/O cards and field sensor modules need robust dual-rail power on a single 5 V or 24 V-derived bus. The TPS71825-12DRVT's 6.5 V max input survives 5 V bus transients, and the dual fixed outputs (2.5 V + 1.2 V) cover both the analog signal-conditioning stage and the digital logic interface in many modern PLC designs. The WSON-6 footprint combined with extended temperature range supports sealed industrial enclosures.
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: TPS71825-12DRVT — 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 | TPS71825-12DRVR | TPS71833-18DRVT | TPS71828-15DRVT | TPS71801DRVT | TPS71830-33DRVT |
|---|---|---|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Package | 6-WSON (DRV) 2x2 mm | 6-WSON (DRV) 2x2 mm | 6-WSON (DRV) 2x2 mm | 6-WSON (DRV) 2x2 mm | 6-WSON (DRV) 2x2 mm | 6-WSON (DRV) 2x2 mm |
| Number of Outputs | 2 | 2 | 2 | 2 | 2 | 2 |
| Output Voltage 1 | 2.5 V | 2.5 V | 3.3 V | 2.8 V | Adjustable | 3.0 V |
| Output Voltage 2 | 1.2 V | 1.2 V | 1.8 V | 1.5 V | Adjustable | 3.3 V |
| Output Current per Channel | 200 mA | 200 mA | 200 mA | 200 mA | 200 mA | 200 mA |
| Input Voltage Range | 2.7 V to 6.5 V | 2.7 V to 6.5 V | 2.7 V to 6.5 V | 2.7 V to 6.5 V | 2.7 V to 6.5 V | 2.7 V to 6.5 V |
| Dropout Voltage | 230 mV at 200 mA | 230 mV at 200 mA | 230 mV at 200 mA | 230 mV at 200 mA | 230 mV at 200 mA | 230 mV at 200 mA |
| Enable Pin | Yes (active-high, shared) | Yes (active-high, shared) | Yes (active-high, shared) | Yes (active-high, shared) | Yes (active-high, shared) | Yes (active-high, shared) |
主な差別化要因
- Dual fixed outputs in a single 2 mm x 2 mm WSON-6 footprint （vs Two discrete TPS782 single-output LDOs)
- Wider voltage and temperature coverage than competing dual LDOs （vs TPS71833-18DRVT)
- Truly drop-in footprint across the TPS718 family （vs TPS71801DRVT (adjustable variant))
設計ノート
Place both input and output ceramic capacitors as close to the IC pins as possible to minimize parasitic inductance. For each output, use a 1 uF to 2.2 uF low-ESR X5R/X7R ceramic capacitor. The exposed thermal pad on the WSON-6 (DRV) must be soldered to the PCB ground plane with sufficient copper (typically 10 mm x 10 mm minimum) to provide a thermal path for the 230 mW to 500 mW typical dissipation.
At VIN = 5 V, VOUT1 = 2.5 V and VOUT2 = 1.2 V loaded at 200 mA each, the device dissipates approximately (5-2.5)*0.2 + (5-1.2)*0.2 = 0.50 W + 0.76 W = 1.26 W. With the WSON-6 thermal pad properly soldered to a 10 mm x 10 mm copper pour, the estimated junction-to-ambient thermal resistance is approximately 80 C/W, yielding a ~100C rise over ambient. Keep ambient below 85C for reliable long-term operation.
Do not apply input voltages above 6.5 V - the absolute maximum rating on the TPS718xx family is exceeded and the device may be permanently damaged. Ensure both output capacitors are populated, even if only one output is used at the time, because the unused channel needs its compensation capacitor for stability. Pull EN low (or to GND) in shutdown rather than leaving it floating; floating EN can lead to indeterminate output behavior.
コンプライアンス情報
RoHS and lead-free compliant per TI product page. Not AEC-Q100 qualified; the TPS718xx family targets portable consumer applications.
