TPS7A91

現行

具高準確度的 1-A、低雜訊、高 PSRR、可調式超低壓降電壓穩壓器

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產品規格表

document-pdfAcrobat TPS7A91 1-A, High-Accuracy, Low-Noise LDO Voltage Regulator datasheet (英文) PDF | HTML

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TLV759P

現行

具有啟用功能的 1A、低 IQ、高準確度、可調整超低壓差電壓穩壓器 1A, adjustable output LDO with lower IQ for cost-sensitive applications.

TPS746

現行

具有電源良好指示和啟用功能的 1A、低 IQ、高準確度、可調整超低壓差電壓穩壓器 1A, adjustable output LDO with lower IQ and power good for cost-sensitive applications.

TPS7A91

現行

產品規格表

立即訂購

產品詳細資料

Output options

Adjustable Output

Iout (max) (A)

1

Vin (max) (V)

6.5

Vin (min) (V)

1.4

Vout (max) (V)

5.2

Vout (min) (V)

0.8

Noise (µVrms)

4.7

Iq (typ) (mA)

2.1

Thermal resistance θJA (°C/W)

57

Rating

Catalog

Load capacitance (min) (µF)

22

Regulated outputs (#)

1

Features

Enable, Foldback Overcurrent protection, Output discharge, Power good, Soft start

Accuracy (%)

1

PSRR at 100 KHz (dB)

48

Dropout voltage (Vdo) (typ) (mV)

130

Operating temperature range (°C)

-40 to 125

Output options

Adjustable Output

Iout (max) (A)

1

Vin (max) (V)

6.5

Vin (min) (V)

1.4

Vout (max) (V)

5.2

Vout (min) (V)

0.8

Noise (µVrms)

4.7

Iq (typ) (mA)

2.1

Thermal resistance θJA (°C/W)

57

Rating

Catalog

Load capacitance (min) (µF)

22

Regulated outputs (#)

1

Features

Enable, Foldback Overcurrent protection, Output discharge, Power good, Soft start

Accuracy (%)

1

PSRR at 100 KHz (dB)

48

Dropout voltage (Vdo) (typ) (mV)

130

Operating temperature range (°C)

-40 to 125

WSON (DSK)

10

6.25 mm² 2.5 x 2.5

1.0% Accuracy Over Line, Load, and Temperature
Low Output Noise: 4.7 µV_RMS (10 Hz–100 kHz)
Low Dropout: 200 mV (max) at 1 A
Wide Input Voltage Range: 1.4 V to 6.5 V
Wide Output Voltage Range: 0.8 V to 5.2 V
High Power-Supply Ripple Rejection (PSRR):
- 70 dB at DC
- 40 dB at 100 kHz
- 40 dB at 1 MHz
Fast Transient Response
Adjustable Start-Up In-Rush Control with Selectable Soft-Start Charging Current
Open-Drain Power-Good (PG) Output
2.5-mm × 2.5-mm, 10-Pin SON Package

1.0% Accuracy Over Line, Load, and Temperature
Low Output Noise: 4.7 µV_RMS (10 Hz–100 kHz)
Low Dropout: 200 mV (max) at 1 A
Wide Input Voltage Range: 1.4 V to 6.5 V
Wide Output Voltage Range: 0.8 V to 5.2 V
High Power-Supply Ripple Rejection (PSRR):
- 70 dB at DC
- 40 dB at 100 kHz
- 40 dB at 1 MHz
Fast Transient Response
Adjustable Start-Up In-Rush Control with Selectable Soft-Start Charging Current
Open-Drain Power-Good (PG) Output
2.5-mm × 2.5-mm, 10-Pin SON Package

The TPS7A91 is a low-noise (4.7 µV_RMS), low-dropout (LDO) voltage regulator capable of sourcing 1 A with only 200 mV of maximum dropout.

The TPS7A91 output is adjustable with external resistors from 0.8 V to 5.2 V. The TPS7A91 wide input-voltage range supports operation as low as 1.4 V and up to 6.5 V.

With 1% output voltage accuracy (over line, load, and temperature) and soft-start capabilities to reduce in-rush current, the TPS7A91 is ideal for powering sensitive analog low-voltage devices [such as voltage-controlled oscillators (VCOs), analog-to-digital converters (ADCs), digital-to-analog converters (DACs), high-end processors, and field-programmable gate arrays (FPGAs)].

The TPS7A91 is designed to power noise-sensitive components such as those found in high-speed communication, video, medical, or test and measurement applications. The very low 4.7-µV_RMS output noise and wideband PSRR (40 dB at 1 MHz) minimizes phase noise and clock jitter. These features maximize performance of clocking devices, ADCs, and DACs.

The TPS7A91 is a low-noise (4.7 µV_RMS), low-dropout (LDO) voltage regulator capable of sourcing 1 A with only 200 mV of maximum dropout.

The TPS7A91 output is adjustable with external resistors from 0.8 V to 5.2 V. The TPS7A91 wide input-voltage range supports operation as low as 1.4 V and up to 6.5 V.

With 1% output voltage accuracy (over line, load, and temperature) and soft-start capabilities to reduce in-rush current, the TPS7A91 is ideal for powering sensitive analog low-voltage devices [such as voltage-controlled oscillators (VCOs), analog-to-digital converters (ADCs), digital-to-analog converters (DACs), high-end processors, and field-programmable gate arrays (FPGAs)].

The TPS7A91 is designed to power noise-sensitive components such as those found in high-speed communication, video, medical, or test and measurement applications. The very low 4.7-µV_RMS output noise and wideband PSRR (40 dB at 1 MHz) minimizes phase noise and clock jitter. These features maximize performance of clocking devices, ADCs, and DACs.

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	類型	標題		日期
*	Data sheet	TPS7A91 1-A, High-Accuracy, Low-Noise LDO Voltage Regulator datasheet	PDF \| HTML	2016年 12月 13日
	White paper	Parallel LDO Architecture Design Using Ballast Resistors	PDF \| HTML	2022年 12月 14日
	White paper	Comprehensive Analysis and Universal Equations for Parallel LDO's Using Ballast	PDF \| HTML	2022年 12月 13日
	Technical article	LDO basics: noise – how a feed-forward capacitor improves system performance	PDF \| HTML	2017年 7月 25日
	Technical article	LDO basics: noise – how a noise-reduction pin improves system performance	PDF \| HTML	2017年 6月 14日
	EVM User's guide	TPS7A91EVM-831 Evaluation Module User's Guide		2016年 11月 29日

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開發板

TPS7A91EVM-831 — 適用於類比的 TPS7A91 1A 低雜訊低輸入電壓低壓差 (LDO) 穩壓器評估模組

The TPS7A91EVM-831 evaluation module is designed for a typical configuration to evaluate the operation and performance of the TPS7A91, 1A high-accuracy, low dropout voltage regulator. The EVM circuit board is configured to be a reference design for engineering applications requiring current to a (...)

使用指南: PDF