TPS7A8300RGRR - 2A Low-Noise LDO, 6uVRMS | Texas Instruments
部品番号: TPS7A8300RGRR ✓ 生産中| 数量 | 単価 | 小計 |
|---|---|---|
| 1 | $2.45 | $2.45 |
| 10 | $2.21 | $22.10 |
| 100 | $1.82 | $182.00 |
| 500 | $1.49 | $745.00 |
| 1,000 | $1.25 | $1,250.00 |
TPS7A8300RGRR 概要
An LDO (Low-Dropout) linear regulator is a voltage regulator that maintains a stable output even when the input voltage is very close to the output voltage. It is a subclass of linear regulators within the broader voltage regulator and power management IC hierarchy, essential for noise-sensitive circuits where switching regulators introduce unacceptable ripple and EMI.
Key features include the 6 uVRMS output noise (10 Hz to 100 kHz), the ANY-OUT architecture that lets the output voltage be programmed via PCB pin connections up to 3.95V without external resistors, and a power-good (PG) output. Enable and soft-start functions are integrated, along with overcurrent and thermal shutdown protection. Dropout of only 125 mV at 2 A enables high-efficiency, low-headroom designs.
Architecturally, the TPS7A8300 uses a PMOS pass element with a precision reference. Its low-VIN capability and ceramic-capacitor stability simplify BOM and layout. Excellent line/load regulation and high PSRR make it well suited to post-regulation of switching converter rails.
Typical applications include RF transceiver and PLL power rails, audio DAC/ADC supplies, FPGA and processor core voltages, and precision analog front-ends in industrial and communications equipment.
Design tip: solder the exposed pad to a substantial copper pour for thermal dissipation, configure the ANY-OUT sense pins correctly for the target voltage, and provide 10 uF ceramic output capacitance for stability.
ドロップイン代替品: TPS7A8300RGRR — 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:
TPS7A8300RGRT
✅ ドロップイン📋 参考代替品（カタログ未掲載）
TPS7A8300ARGRR
✅ ドロップイン📋 参考代替品（カタログ未掲載）
TPS7A8300ARGRT
✅ ドロップイン📋 参考代替品（カタログ未掲載）
TPS7A8300QRGRRQ1
✅ ドロップイン✓ 在庫あり
$1.05 / 個
データシートを見る →TPS7A8100RGWR
⚡ 同一パッケージ ⚠️ 仕様未検証📋 参考代替品（カタログ未掲載）
TPS7A8300RGRR 最大定格＆電気的特性
| 出力タイプ | Adjustable/Programmable (ANY-OUT) |
| 出力電圧範囲 | 0.8 V to 5 V (up to 3.95 V via ANY-OUT pins) |
| 最大出力電流 | 2 A |
| ドロップアウト電圧 | 125 mV maximum at 2 A |
| 出力ノイズ | 6 uVRMS (10 Hz to 100 kHz) |
| 特長 | Enable, Power Good, Soft Start |
| Protection | Overcurrent, Thermal Shutdown |
| 動作温度 | -40C to +125C |
| パッケージ | 20-VQFN (3.5x3.5 mm), Exposed Pad |
| 実装タイプ | Surface Mount |
| Regulator Topology | PMOS LDO |
| Output Capacitor | Ceramic capacitor stable |
| RoHS ステータス | Compliant |
| Pin Pitch | 0.5 mm |
TPS7A8300RGRR ピン構成
| ピン 1 | EN — Enable input (active high) |
| ピン 2 | IN — Input supply voltage |
| ピン 3 | IN — Input supply voltage |
| ピン 4 | GND — Ground |
| ピン 5 | GND — Ground |
| ピン 6 | SS — Soft-start / feed-forward capacitor |
| ピン 7 | PG — Power-good open-drain output |
| ピン 8 | OUT — Regulated output voltage |
| ピン 9 | OUT — Regulated output voltage |
| ピン 10 | SENSE — Output voltage sense |
| ピン 11 | NC/FB — ANY-OUT programming / feedback network connection |
| ピン 20 | PAD — Exposed thermal pad - solder to ground pour |
主な用途
TPS7A8300RGRR の用途: 6 件s: RF Transceiver and PLL Power Rails, FPGA and Processor Core Rails, Audio DAC and ADC Supplies, Industrial Precision Analog Front-Ends, Automotive Infotainment and ADAS Rails, Communications and Networking Equipment.
RF Transceiver and PLL Power Rails
The TPS7A8300's 6 uVRMS noise floor (10 Hz to 100 kHz) makes it ideal for powering PLLs, VCOs, and RF transceiver analog supplies where supply noise converts directly into phase noise. With only 125 mV maximum dropout at 2 A, it can post-regulate directly from a switching converter output without large headroom, preserving efficiency. Place it after a buck converter with 10 uF ceramic output capacitance to strip switching ripple; the result is a clean RF rail with no switching spurs in the synthesis path.
おすすめ
FPGA and Processor Core Rails
Processor and FPGA core rails often sit below 1.2V at multi-amp loads, and the TPS7A8300's 2-A capability, 0.8V minimum output, and 125 mV dropout let it deliver final-point-of-load regulation with tight accuracy. The power-good output supports rail sequencing and reset supervision, while soft-start controls inrush during power-up. Its ANY-OUT programming lets one PCB footprint serve multiple rail voltages across board variants without changing the BOM - a major advantage for processor families with several core-voltage options.
おすすめ
Audio DAC and ADC Supplies
Audio converter AVDD rails demand ultra-clean supplies because PSRR collapses at higher frequencies; the TPS7A8300's 6 uVRMS integrated noise and high PSRR keep the converter noise floor dominated by the silicon itself, not the regulator. The 2-A rating covers codec groups and differential output stages, and ceramic-capacitor stability allows compact 10 uF MLCC decoupling right at the AVDD pin. Unlike switching regulators used alone, this LDO adds no switching artifacts in the audio band, protecting SNR and THD specifications.
おすすめ
Industrial Precision Analog Front-Ends
Precision data converters and instrumentation amplifiers in industrial equipment are highly sensitive to supply-induced offset drift and noise. The TPS7A8300 regulates rails from 0.8V to 5V with excellent line and load regulation, and its enable pin supports power gating of analog sections to cut system quiescent power. Because it tolerates low headroom from upstream 24V-derived intermediate buses after a buck stage, it simplifies power tree design in PLC, test, and measurement analog front-ends while maintaining the low noise that ADS-class converters require.
おすすめ
Automotive Infotainment and ADAS Rails
For automotive designs, the pin-compatible AEC-Q100 qualified TPS7A8300QRGRRQ1 provides the same 2-A, 6 uVRMS performance with automotive qualification. It is used to clean up rails feeding ADAS processors, camera module analog supplies, and infotainment audio/DSP sections where battery-input switching converters leave ripple. The power-good output supports fault monitoring required in safety-relevant power trees, and the wide -40C to +125C operating range covers harsh underhood and cabin electronics environments.
おすすめ
Communications and Networking Equipment
Optical modules, Ethernet PHYs, and clocking circuits in switches and routers require low-noise rails with low dropout to maximize efficiency from constrained intermediate buses. The TPS7A8300's low-VIN capability and 125 mV dropout allow regulation from 1.5V or 1.8V distribution rails without sacrificing margin, while its 2-A capacity covers PHY and SerDes supplies. Power-good signaling integrates into system health monitoring, and the small 3.5x3.5 mm VQFN-20 conserves board area in high-density line-card layouts.
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: TPS7A8300RGRR — 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 | TPS7A8300RGRT | TPS7A8300ARGRR | TPS7A8300QRGRRQ1 |
|---|---|---|---|---|
| Package | 20-VQFN (3.5x3.5 mm) EP | 20-VQFN (3.5x3.5 mm) - same | 20-VQFN (3.5x3.5 mm) - same | 20-VQFN (3.5x3.5 mm) - same |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Output Current | 2 A | 2 A | 2 A | 2 A |
| Output Voltage Range | 0.8 V to 5 V | 0.8 V to 5 V | 0.8 V to 5 V | 0.8 V to 5 V |
| Dropout Voltage (max) | 125 mV at 2 A | 125 mV at 2 A | 125 mV at 2 A | 125 mV at 2 A |
| Output Noise | 6 uVRMS | 6 uVRMS | 6 uVRMS | 6 uVRMS |
| ANY-OUT Programming | Yes (to 3.95 V, no resistors) | Yes | Yes | Yes |
| AEC-Q100 Qualified | No | No | No | Yes |
主な差別化要因
- ANY-OUT resistorless output programming （vs TPS7A8100RGWR)
- Automotive-qualified drop-in option （vs TPS7A8300QRGRRQ1)
- 125 mV dropout at full 2-A load （vs TPS7A8300ARGRR (baseline comparison))
設計ノート
At low dropout (125 mV max at 2 A), dissipation is modest, but at larger VIN-VOUT deltas such as 3.3V to 1.2V at 2 A (4.2 W), the 3.5x3.5 mm VQFN-20 requires substantial copper. Solder the exposed pad to a ground pour of at least 1 square inch with via stitching to inner layers, and verify junction temperature stays below 125C at worst-case ambient.
Program the output voltage with the ANY-OUT pins by grounding the appropriate sense pins directly in the PCB layout - no external resistors are needed up to 3.95V. Place 10 uF ceramic input and output capacitors within 2 mm of the IN and OUT pins, and use the SS pin capacitor to set a controlled soft-start ramp that limits inrush into large core-rail capacitance.
Do not leave the SENSE pin disconnected from the output - regulation accuracy depends on remote sensing at the load point. The EN pin must not be left floating; tie it to IN for always-on operation. When using ANY-OUT pin strapping, verify the target voltage against the TI datasheet pin table, since each grounded pin adds a fixed offset and incorrect strapping produces an unexpected output.
コンプライアンス情報
RoHS compliant and lead-free per TI product page and distributor listings. Not AEC-Q100 qualified - use TPS7A8300QRGRRQ1 for automotive. REACH/halogen declarations per date code on TI quality portal.
