Texas Instruments
TPS7A4701RGWR - 1A, 35V Ultra-Low Noise LDO | Texas Instruments
Артикул: TPS7A4701RGWR ✓ Активен
В наличии
Отправка в течение 1–3 рабочих дней
1.4 V to 34 V Vdss
1 A Id
31.4 C/W Rds(on)
VQFN-20 (RGW) 5x5 mm Package
От $3.2467
USD / шт.
MOQ: 1 |
Цена обновлена: 2026-09-02
Оптовые цены
| Кол-во | Цена за ед. | Итого |
|---|---|---|
| 1 | $3.2467 | $3,25 |
ℹ️ Все цены указаны в USD
TPS7A4701RGWR Обзор
The Texas Instruments TPS7A4701RGWR is an ultra-low-noise, high-PSRR LDO linear regulator delivering up to 1A output current in a 20-pin VQFN (RGW) package with exposed thermal pad. It features an adjustable output voltage range of 1.4V to 34V and supports input voltages from 3V to 35V.
Key features include 4.17 uVrms output noise (20 Hz to 100 kHz), 72 dB PSRR at 1 kHz, and a low dropout voltage of 200 mV at full 1A load. The device also offers 6.4 mA quiescent current, an active-high enable pin for power sequencing, and thermal shutdown protection. The VQFN-20 package provides a thermal resistance of 31.4 C/W, enabling compact designs without external heatsinking at moderate power levels.
The TPS7A4701 utilizes a bipolar architecture with a precision bandgap reference, achieving noise performance comparable to discrete reference designs while maintaining regulator simplicity. The high PSRR minimizes ripple from upstream switching converters, making it suitable for noise-sensitive analog and RF signal chains where clean power rails are critical.
Typical applications include high-end audio DAC power supplies, PLL/VCO power rails in RF transceivers, precision ADC/DAC reference buffering, and test and measurement instrumentation. The wide input range also supports industrial 24V bus systems with adequate headroom.
When designing with this device, ensure adequate input-to-output voltage headroom to maintain regulation under all load conditions. The enable pin allows sequential power-up in multi-rail systems, which is essential for processors requiring specific rail sequencing.
Key features include 4.17 uVrms output noise (20 Hz to 100 kHz), 72 dB PSRR at 1 kHz, and a low dropout voltage of 200 mV at full 1A load. The device also offers 6.4 mA quiescent current, an active-high enable pin for power sequencing, and thermal shutdown protection. The VQFN-20 package provides a thermal resistance of 31.4 C/W, enabling compact designs without external heatsinking at moderate power levels.
The TPS7A4701 utilizes a bipolar architecture with a precision bandgap reference, achieving noise performance comparable to discrete reference designs while maintaining regulator simplicity. The high PSRR minimizes ripple from upstream switching converters, making it suitable for noise-sensitive analog and RF signal chains where clean power rails are critical.
Typical applications include high-end audio DAC power supplies, PLL/VCO power rails in RF transceivers, precision ADC/DAC reference buffering, and test and measurement instrumentation. The wide input range also supports industrial 24V bus systems with adequate headroom.
When designing with this device, ensure adequate input-to-output voltage headroom to maintain regulation under all load conditions. The enable pin allows sequential power-up in multi-rail systems, which is essential for processors requiring specific rail sequencing.
Аналоги без доработки для TPS7A4701RGWR — тот же корпус, pin-to-pin совместимость. Компоненты в других корпусах, требующие переработки PCB, исключены.
Варианты в этой серии
Модели той же серии, совместимые без доработки с TPS7A4701RGWR (тот же форм-фактор и посадочное место) — отличается по Input Voltage Range, Output Voltage Range, Package, RoHS Status.
Intel
Input Voltage Range: 2.2 V to 6 V
Output Voltage Range: 0.8 V to 5 V (adjustable)
Package: 10-DFN (3x3 mm), Pb-Free
Сравнить с TPS7A4701RGWR →
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TPS7A4700RGWR
Texas Instruments
Positive, adjustable (ANY-OUT programmable) · 1.4 V to 20.5 V (ANY-OUT via PCB layout) · 1 A · 3 V to 36 V · 4.17 uVRMS (20 Hz to 100 kHz)
✓ В наличии
$3.6591 / шт.
Открыть даташит →TPS7A4701RGWR-Q1
same die/package, AEC-Q100 automotive grade
📋 Справочный аналог (нет в каталоге)
TPS7A4701RGWT
same die, tape and reel packaging variant
📋 Справочный аналог (нет в каталоге)
TPS7A4701RGWR Максимальные параметры и электрические характеристики
| Тип выхода | Adjustable |
| Диапазон выходного напряжения | 1.4 V to 34 V |
| Максимальный выходной ток | 1 A |
| Диапазон входного напряжения | 3 V to 35 V |
| Напряжение падения | 200 mV at 1 A |
| Выходной шум | 4.17 uVrms (20 Hz to 100 kHz) |
| PSRR | 72 dB at 1 kHz |
| Ток покоя | 6.4 mA |
| Тепловое сопротивление | 31.4 C/W |
| Рабочая температура | -40C to +125C |
| Корпус | VQFN-20 (RGW) 5x5 mm |
| Тип монтажа | Surface Mount |
| Уровень MSL | 2 (1 year) |
| Статус RoHS | Compliant |
| Вывод разрешения | Yes (active-high) |
Конфигурация выводов TPS7A4701RGWR
| Контакт 1 | OUT — Regulated output voltage |
| Контакт 2 | OUT — Regulated output voltage |
| Контакт 3 | OUT — Regulated output voltage |
| Контакт 4 | OUT — Regulated output voltage |
| Контакт 5 | GND — Ground |
| Контакт 6 | EN — Enable (active high) |
| Контакт 7 | IN — Input supply |
| Контакт 8 | IN — Input supply |
| Контакт 9 | IN — Input supply |
| Контакт 10 | IN — Input supply |
| Контакт 11 | NR/SS — Noise reduction/soft-start |
| Контакт 12 | FB — Feedback |
| Контакт 13 | GND — Ground |
| Контакт 14 | GND — Ground |
| Контакт 15 | GND — Ground |
| Контакт 16 | GND — Ground |
| Контакт 17 | GND — Ground |
| Контакт 18 | GND — Ground |
| Контакт 19 | GND — Ground |
| Контакт 20 | GND — Ground |
Типичное применение
TPS7A4701RGWR подходит для 6 применениеs: High-End Audio DAC Power Supply, RF Transceiver Power Supply, Precision ADC Reference Buffer, Test and Measurement Instrumentation, Industrial 24V Bus Systems, Portable Medical Devices.
High-End Audio DAC Power Supply
Provides clean 5V rail for audio DACs with 4.17uVrms noise.
Рекомендуется
RF Transceiver Power Supply
Supplies low-noise power to PLL/VCO circuits in RF transceivers.
Рекомендуется
Precision ADC Reference Buffer
Buffers reference voltage for precision ADCs with low noise.
Рекомендуется
Test and Measurement Instrumentation
Provides clean power rails for sensitive measurement circuits.
Рекомендуется
Industrial 24V Bus Systems
Regulates 24V industrial bus down to low-noise rails for sensors and controllers.
Рекомендуется
Portable Medical Devices
Provides low-noise power for battery-operated medical monitoring equipment.
Рекомендуется
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What is the output voltage range of TPS7A4701?
The TPS7A4701 adjustable version outputs from 1.4V to 34V using external resistor dividers. According to TI datasheet SBOS708B, the output is set by two external resistors with the formula VOUT = 1.4V * (1 + R1/R2).
Does TPS7A4701 require a heatsink at 1A output?
At VIN=12V, VOUT=5V, and 1A load, the TPS7A4701 dissipates approximately 7W of power. With a thermal resistance of 31.4 C/W (theta_JA), the junction temperature would rise 220C above ambient. A heatsink or substantial copper pour (at least 1 square inch) is required for reliable operation above 2-3W dissipation.
What is the difference between TPS7A4701 and TPS7A4700?
The TPS7A4701 includes an active-high enable pin for power sequencing, while the TPS7A4700 does not have an enable pin. Both share identical noise (4.17 uVrms) and PSRR (72 dB at 1 kHz) specifications and the same VQFN-20 (RGW) package, making them drop-in replacements.
What is the output noise of TPS7A4701?
The TPS7A4701 has an output noise of 4.17 uVrms over the 20 Hz to 100 kHz bandwidth. This makes it suitable for noise-sensitive applications such as audio DACs, RF synthesizers, and precision ADC references.
Can TPS7A4701 be used for audio applications?
Yes, the TPS7A4701 is ideal for audio DAC power supplies due to its 4.17 uVrms ultra-low noise and 72 dB PSRR at 1 kHz. These specifications ensure clean power rails that do not introduce audible noise or interference into the audio signal path.
What is the input voltage range of TPS7A4701?
The TPS7A4701 operates with an input voltage range from 3V to 35V. This wide range allows it to be used in various applications, including industrial 24V bus systems and battery-powered devices.
What is the dropout voltage of TPS7A4701?
The TPS7A4701 has a low dropout voltage of 200 mV at full 1A load. This low dropout allows efficient regulation even when the input voltage is close to the output voltage, reducing power dissipation.
Is TPS7A4701 available in automotive grade?
The standard TPS7A4701RGWR is not AEC-Q100 qualified. However, the TPS7A4701RGWR-Q1 variant is AEC-Q100 qualified for automotive applications, sharing the same VQFN-20 (RGW) package and pinout.
What is the quiescent current of TPS7A4701?
The TPS7A4701 has a quiescent current of 6.4 mA. This relatively low quiescent current helps maintain efficiency in battery-powered applications while providing high performance.
What is the PSRR of TPS7A4701?
The TPS7A4701 achieves a PSRR of 72 dB at 1 kHz. This high power supply rejection ratio minimizes ripple from upstream switching converters, making it ideal for noise-sensitive analog and RF circuits.
What is the package of TPS7A4701?
The TPS7A4701 is available in a 20-pin VQFN (RGW) package measuring 5x5 mm with an exposed thermal pad. This compact package is suitable for space-constrained designs and provides good thermal performance.
What is the operating temperature range of TPS7A4701?
The TPS7A4701 operates over a temperature range of -40C to +125C. This wide range makes it suitable for industrial and automotive environments where extreme temperatures are common.
Does TPS7A4701 have thermal shutdown protection?
Yes, the TPS7A4701 includes thermal shutdown protection. This feature prevents damage from overheating by shutting down the regulator when the junction temperature exceeds safe limits.
What is the MSL level of TPS7A4701?
The TPS7A4701 has an MSL (Moisture Sensitivity Level) of 2, with a floor life of 1 year. This indicates the component can be stored for up to one year before soldering, provided it is kept in a dry environment.
Is TPS7A4701 RoHS compliant?
Yes, the TPS7A4701 is RoHS compliant. This ensures it meets the European Union's restrictions on hazardous substances, making it suitable for use in consumer and industrial products.
Справочные инженерные данные для TPS7A4701RGWR — сравнение, рекомендации по проектированию и информация о соответствии.
Руководство по выбору
Choose TPS7A4701RGWR when you need a positive-output ultra-low-noise LDO with enable pin for power sequencing in industrial or consumer applications. Choose TPS7A4700RGWR if you do not need the enable pin (slight cost savings, same package). Choose TPS7A4701RGWR-Q1 for automotive applications requiring AEC-Q100 qualification. Choose TPS7A4701RGWT if you prefer a different tape and reel ordering option, but note it is electrically identical. All parts share the same VQFN-20 (RGW) package footprint, enabling PCB layout reuse across variants.
Сравнение с аналогами
| Параметр | Этот товар | TPS7A4700RGWR | TPS7A4701RGWR-Q1 | TPS7A4701RGWT |
|---|---|---|---|---|
| Package | VQFN-20 (RGW) | VQFN-20 (RGW) - same | VQFN-20 (RGW) - same | VQFN-20 (RGW) - same |
| Output Current | 1 A | 1 A | 1 A | 1 A |
| Output Voltage Range | 1.4V to 34V | 1.4V to 34V | 1.4V to 34V | 1.4V to 34V |
| Enable Pin | Yes (active-high) | No | Yes (active-high) | Yes (active-high) |
| Automotive Grade | No | No | Yes (AEC-Q100) | No |
| Output Noise | 4.17 uVrms | 4.17 uVrms | 4.17 uVrms | 4.17 uVrms |
| PSRR at 1 kHz | 72 dB | 72 dB | 72 dB | 72 dB |
| Quiescent Current | 6.4 mA | 6.4 mA | 6.4 mA | 6.4 mA |
Ключевые отличия
- Only VQFN-20 family member with enable pin (против TPS7A4700RGWR)
- Automotive grade option available (против TPS7A4701RGWR-Q1)
- Tape and reel packaging variant (против TPS7A4701RGWT)
Заметки по проектированию
At VIN=12V, VOUT=5V, and 1A load, power dissipation is 7W. The VQFN-20 package has theta_JA of 31.4 C/W, resulting in a 220C junction temperature rise. A heatsink or at least 1 square inch of copper pour is required for reliable operation above 2W dissipation.
Place input and output capacitors as close to the IC pins as possible. Use a 10uF ceramic capacitor on the input and a 10uF ceramic capacitor on the output. Add a 0.1uF ceramic capacitor in parallel for high-frequency noise bypass.
Do not exceed the maximum input voltage of 35V. Ensure the external resistor divider uses 1% or better tolerance resistors to maintain output voltage accuracy. The NR/SS capacitor controls startup time and noise bandwidth - do not omit it.
Информация о соответствии
RoHS
Compliant
REACH
Compliant
AEC-Q100
Без свинца
Без галогенов
Конфликтные минералы
Compliant
RoHS compliant per TI product page. Not AEC-Q100 qualified - choose TPS7A4701RGWR-Q1 for automotive.
Данные проверены: 2026-08-17
— данные проверены и курируются командой компонентной инженерии XAIPART
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Связанные компоненты & термины
Texas Instruments
TPS7A4701
TPS7A4701RGWR
TPS7A4700RGWR
TPS7A4701RGWR-Q1
TPS7A4701RGWT
LDO
linear regulator
PSRR
VQFN-20
RoHS
AEC-Q100
audio DAC
RF power supply
bandgap reference
thermal shutdown
enable pin
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