TPS7A4701QRGWRQ1 - 1A 35V Ultra-Low Noise LDO | TI Automotive
MPN: TPS7A4701QRGWRQ1 ✓ فعال| مقدار | فی یونٹ قیمت | کل رقم |
|---|---|---|
| 1 | $5.35 | $5.35 |
| 10 | $4.82 | $48.20 |
| 100 | $4.29 | $429.00 |
| 500 | $3.86 | $1,930.00 |
| 1,000 | $3.48 | $3,480.00 |
TPS7A4701QRGWRQ1 جائزہ
An LDO (low-dropout regulator) is a type of linear voltage regulator that maintains a stable output voltage even when the input is only slightly higher than the output. Within the power management IC hierarchy, the TPS7A47-Q1 sits at the precision post-regulation stage, typically cleaning up noisy switching-converter rails for sensitive analog loads.
Key features include 4.2 uVRMS output noise (20 Hz to 100 kHz), very high PSRR that suppresses upstream DC-DC ripple, an enable pin for power sequencing, thermal shutdown, and bipolar process technology optimized for RF and analog performance. According to TI datasheet for TPS7A47-Q1, the device is designed primarily for noise-critical RF signal chains.
Typical applications include automotive ADAS sensor power supplies, RF PLL/VCO rails, high-end audio DAC supplies, and precision data-converter reference rails. The 35V input tolerance supports automotive 12V and industrial 24V buses with load-dump headroom.
Design consideration: at large VIN-VOUT deltas and 1A load, power dissipation is significant - ensure adequate PCB copper area on the exposed pad. Prices as of 2026-08-29.
کے لیے ڈراپ اِن متبادل TPS7A4701QRGWRQ1 — یکساں پیکیج، پن سے پن مطابقت پذیر۔ مختلف پیکیج والے پرزے جن کے لیے PCB دوبارہ کام درکار ہو، شامل نہیں ہیں۔
اس سیریز میں مختلف ورژن
اسی سیریز کے ماڈلز جو ڈراپ اِن مطابقت رکھتے ہیں TPS7A4701QRGWRQ1 (یکساں فارم فیکٹر اور فٹ پرنٹ) — میں مختلف Input Voltage Range, Output Noise, Output Type, Output Voltage Range.
فوری موازنہ ٹول — ساتھ ساتھ موازنے کے لیے متبادل پرزے منتخب کریں:
TPS7A4700QRGWRQ1
قیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →TPS7A4701RGWR
✗ اسٹاک سے باہر
$3.2467 / یونٹ
ڈیٹا شیٹ دیکھیں →TPS7A4701QRGWTQ1
📋 حوالہ جاتی متبادل (کیٹلاگ میں نہیں)
TPS7A4701-EP
📋 حوالہ جاتی متبادل (کیٹلاگ میں نہیں)
LT3045
📋 حوالہ جاتی متبادل (کیٹلاگ میں نہیں)
TPS7A4701QRGWRQ1 زیادہ سے زیادہ ریٹنگز اور برقی خصوصیات
| آؤٹ پٹ کی قسم | Adjustable/Programmable |
| آؤٹ پٹ وولٹیج کی حد | 1.4 V to 34 V (adjustable), up to 20.5 V (PCB-programmable) |
| زیادہ سے زیادہ آؤٹ پٹ کرنٹ | 1 A |
| اِن پٹ وولٹیج رینج | Up to 35 V |
| آؤٹ پٹ شور | 4.2 uVRMS (20 Hz to 100 kHz) |
| Regulator Topology | LDO (Low-Dropout Linear Regulator) |
| آؤٹ پٹس کی تعداد | 1 |
| Polarity | Positive |
| Technology | Bipolar |
| این ایبل پن | Yes |
| Protection Features | Thermal shutdown, current limit |
| Qualification | AEC-Q100 (Automotive) |
| پیکیج | 20-VQFN (5x5 mm) with exposed pad |
| ماؤنٹنگ ٹائپ | Surface Mount |
| RoHS اسٹیٹس | Compliant |
| Packaging | Tape & Reel (T/R) |
TPS7A4701QRGWRQ1 پن کنفیگریشن
| پن 1-4 | IN — Input supply voltage (up to 35V) |
| پن 5-8 | OUT — Regulated output voltage |
| پن 9 | EN — Enable (active high) |
| پن 10 | NR/SS — Noise reduction / soft-start capacitor |
| پن 11 | FB — Feedback for adjustable output |
| پن 12-15 | GND — Ground |
| پن 16-20 | GND/Pad — Ground and exposed thermal pad |
| پن PAD | PowerPAD — Exposed thermal pad, must be soldered to PCB ground |
عام استعمالات
TPS7A4701QRGWRQ1 کے لیے موزوں ہے 6 ایپلیکیشنs: Automotive ADAS Sensor Power, RF PLL/VCO Power Supply, Automotive Audio Amplifier Supply, Precision ADC/DAC Reference Rails, Industrial 24V Bus Post-Regulation, Automotive Body Electronics and Lighting.
Automotive ADAS Sensor Power
The TPS7A4701QRGWRQ1 suits ADAS radar and camera sensor rails with its 35V input tolerance and AEC-Q100 qualification. Its 4.2 uVRMS noise keeps radar LO chains and image-sensor analog rails clean, while the 1A output supports sensor SoC core supplies. Post-regulating a buck converter output with this LDO removes switching ripple via high PSRR, trading efficiency for noise-critical signal integrity in safety-rated systems.
تجویز کردہ
RF PLL/VCO Power Supply
RF synthesizers demand ultra-clean supplies because VCO pushing and phase-noise degradation track supply noise directly. The 4.2 uVRMS noise and high PSRR of the TPS7A4701QRGWRQ1 minimize spurs on PLL charge-pump and VCO tuning rails. Placing it after a switching preregulator yields a quiet 5V or 3.3V rail; the bipolar process maintains low noise across the audio-to-RF noise bandwidth cited in the TI datasheet.
تجویز کردہ
Automotive Audio Amplifier Supply
In infotainment and external amplifier designs, the TPS7A4701QRGWRQ1 provides a low-noise analog rail for DACs and preamplifiers. The 4.2 uVRMS specification keeps the noise floor far below the audible threshold, preserving dynamic range of 24-bit audio paths. The enable pin allows sequencing with the audio DSP supply, and AEC-Q100 qualification covers the harsh automotive cabin thermal environment.
تجویز کردہ
Precision ADC/DAC Reference Rails
High-resolution data converters need supply noise well below 1 LSB; the TPS7A4701QRGWRQ1 delivers with 4.2 uVRMS output noise. It post-regulates a buck-derived 5V rail down to a clean 3.3V AVDD at up to 1A. Its high PSRR rejects upstream converter ripple, avoiding clock spurs folding into the converter output band, making it suitable for test-measurement and industrial data acquisition front ends.
تجویز کردہ
Industrial 24V Bus Post-Regulation
The 35V maximum input accommodates industrial 24V rails with transient headroom, letting the TPS7A4701QRGWRQ1 serve as a final cleanup regulator for PLC analog modules, sensors, and instrumentation. Feeding it from a wide-VIN buck (e.g., 24V to 6V) then regulating to 5V achieves both efficiency and sub-5-uVRMS noise. Thermal design must account for the series dropout dissipation at 1A loads.
تجویز کردہ
Automotive Body Electronics and Lighting
The enable pin supports power sequencing and sleep-mode control in body control modules, while AEC-Q100 qualification meets automotive reliability requirements. The TPS7A4701QRGWRQ1 can supply low-noise analog sense rails and microcontroller analog supplies in lighting drivers and gateway modules. Its 1A capacity covers multiple low-power loads from one regulator, reducing BOM count versus distributed small LDOs.
تجویز کردہ
تجویز کردہ پروڈکٹس کا خلاصہ
کے لیے انجینئرنگ ریفرنس ڈیٹا TPS7A4701QRGWRQ1 — موازنہ، ڈیزائن رہنمائی، اور تعمیل کی معلومات۔
انتخاب کی گائیڈ
متبادلات کے ساتھ موازنہ
| پیرامیٹر | یہ پروڈکٹ | TPS7A4700QRGWRQ1 | TPS7A4701RGWR | LT3045 |
|---|---|---|---|---|
| Package | VQFN-20 (5x5 mm) EP | VQFN-20 (5x5 mm) - same | VQFN-20 (5x5 mm) - same | LFCSP - pinout differs |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Analog Devices |
| Output Current | 1 A | 1 A | 1 A | 0.5 A |
| Maximum Input Voltage | 35 V | 35 V | 36 V | 15 V |
| Output Noise | 4.2 uVRMS | 4.2 uVRMS | 4.17 uVRMS | 0.8 uVRMS |
| Output Voltage Range | 1.4 V to 34 V | 1.4 V to 34 V | 1.4 V to 34 V | 1.0 V to 15 V |
| AEC-Q100 Qualification | Yes (Q1) | Yes (Q1) | No | No |
| Enable Pin | Yes | No | Yes | Yes |
اہم امتیازی خصوصیات
- Automotive AEC-Q100 qualification at 1A and 4.2 uVRMS noise (بمقابلہLT3045)
- Enable pin for power sequencing in the Q1 family (بمقابلہTPS7A4700QRGWRQ1)
- PCB-programmable fixed output option (بمقابلہTPS7A4701RGWR)
ڈیزائن نوٹس
At VIN=13.5V (automotive rail), VOUT=5V, and 1A load, dissipation is approximately 8.5W. The VQFN-20 PowerPAD must be soldered to a substantial ground pour - TI layout guidelines recommend an array of thermal vias to inner ground layers. Above roughly 2-3W dissipation, evaluate junction temperature against the datasheet thermal resistance and consider reducing VIN-VOUT delta with a switching preregulator.
Place a 10uF ceramic input capacitor and 10uF output capacitor as close to the IN and OUT pins as possible. Connect the NR/SS capacitor (typically 10nF to 1uF) to reduce output noise below the standalone 4.2 uVRMS figure and to control soft-start ramp. Follow TI TPS7A47-Q1 datasheet layout section for FB divider placement to avoid noise pickup.
Do not exceed 35V input including automotive load-dump transients - use a TVS or upstream wide-VIN preregulator. Use 1%-tolerance FB divider resistors to hold output accuracy, and do not omit the NR/SS capacitor in noise-critical designs. When substituting TPS7A4700QRGWRQ1 (no EN pin), tie the enable net appropriately on the shared footprint.
تعمیل کی معلومات
AEC-Q100 qualified per TI Q1 designation and DigiKey/Mouser listings. RoHS/lead-free per TI standard product page.
