TPS71825-12DRVT - 200mA Dual-Output Low-Noise LDO | Texas Instruments
MPN: TPS71825-12DRVT ✓ نشطTPS71825-12DRVT نظرة عامة
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.
بدائل مباشرة لـ TPS71825-12DRVT — نفس الحزمة، متوافق دبوس بدبوس. تُستثنى القطع ذات الحزم المختلفة التي تتطلب تعديل PCB.
الطرازات في هذه السلسلة
طرازات من نفس السلسلة متوافقة تمامًا مع TPS71825-12DRVT (نفس عامل الشكل والبصمة) — يختلف في MSL Level, Operating Temperature Range, Output Type, Package, Regulator Type.
TPS71825-12DRVR
✅ بديل مباشر📋 بديل مرجعي (غير موجود في الكتالوج)
TPS71833-18DRVT
✅ بديل مباشر📋 بديل مرجعي (غير موجود في الكتالوج)
TPS71828-15DRVT
✅ بديل مباشر ⚠️ مواصفات غير مُتحقق منها📋 بديل مرجعي (غير موجود في الكتالوج)
TPS71801DRVT
✅ بديل مباشر ⚠️ مواصفات غير مُتحقق منها📋 بديل مرجعي (غير موجود في الكتالوج)
TPS71830-33DRVT
✅ بديل مباشر ⚠️ مواصفات غير مُتحقق منها📋 بديل مرجعي (غير موجود في الكتالوج)
TPS71825-12DRVT الحدود القصوى والخصائص الكهربائية
| Regulator Type | LDO (Low-Dropout) Linear Regulator, Dual Channel |
| عدد المخارج | 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 |
| نطاق جهد الدخل | 2.7 V to 6.5 V |
| جهد الهبوط | 230 mV at 200 mA |
| نوع الخرج | Fixed (Positive) |
| PSRR | High PSRR (see datasheet for frequency curves) |
| ضجيج الخرج | Low noise (see datasheet for uVrms spec) |
| دبوس التمكين | Yes (active-high) |
| نطاق درجة حرارة التشغيل | -40C to +125C |
| العلبة | 6-pin WSON (DRV), 2 mm x 2 mm |
| نوع التركيب | Surface Mount |
| مستوى MSL | 1 (unlimited floor life at <30C / 85% RH) |
| حالة RoHS | Compliant |
| Lead-Free | Yes |
تكوين أطراف TPS71825-12DRVT
| دبوس 1 | IN — Input voltage supply (2.7 V to 6.5 V) |
| دبوس 2 | GND — Ground reference |
| دبوس 3 | EN — Active-high enable for both outputs |
| دبوس 4 | OUT1 — Regulated 2.5 V output, 200 mA |
| دبوس 5 | OUT2 — Regulated 1.2 V output, 200 mA |
| دبوس 6 | NC — Not connected (per datasheet) |
التطبيقات النموذجية
TPS71825-12DRVT مناسب لـ 6 التطبيقs: 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.
موصى به
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.
موصى به
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.
موصى به
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.
موصى به
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.
موصى به
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.
موصى به
ملخص المنتجات الموصى بها
بيانات مرجعية هندسية لـ TPS71825-12DRVT — المقارنة وإرشادات التصميم ومعلومات الامتثال.
دليل الاختيار
المقارنة مع البدائل
| المعامل | هذا المنتج | 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) |
أبرز الفروقات
- Dual fixed outputs in a single 2 mm x 2 mm WSON-6 footprint (مقابلTwo discrete TPS782 single-output LDOs)
- Wider voltage and temperature coverage than competing dual LDOs (مقابلTPS71833-18DRVT)
- Truly drop-in footprint across the TPS718 family (مقابلTPS71801DRVT (adjustable variant))
ملاحظات التصميم
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.
معلومات الامتثال
RoHS and lead-free compliant per TI product page. Not AEC-Q100 qualified; the TPS718xx family targets portable consumer applications.
