TPS7A45

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具有反向电流保护和使能功能的 1.5A、20V 超低压降稳压器

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数据表

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TL1963A-Q1

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具有反向电流保护功能的汽车类 1.5A、20V、可调节低压降稳压器 AEC-Q100 qualified alternative product

TPS7A45

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数据表

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Output options

Adjustable Output, Fixed Output

Iout (max) (A)

1.5

Vin (max) (V)

20

Vin (min) (V)

2.1

Vout (max) (V)

20

Vout (min) (V)

1.5

Fixed output options (V)

1.5, 1.8, 2.5, 3.3

Rating

Catalog

Noise (µVrms)

35

PSRR at 100 KHz (dB)

38

Iq (typ) (mA)

1

Thermal resistance θJA (°C/W)

28

Load capacitance (min) (µF)

10

Regulated outputs (#)

1

Features

Enable, Reverse Current Protection

Accuracy (%)

2.5

Dropout voltage (Vdo) (typ) (mV)

300

Operating temperature range (°C)

-40 to 125

Output options

Adjustable Output, Fixed Output

Iout (max) (A)

1.5

Vin (max) (V)

20

Vin (min) (V)

2.1

Vout (max) (V)

20

Vout (min) (V)

1.5

Fixed output options (V)

1.5, 1.8, 2.5, 3.3

Rating

Catalog

Noise (µVrms)

35

PSRR at 100 KHz (dB)

38

Iq (typ) (mA)

1

Thermal resistance θJA (°C/W)

28

Load capacitance (min) (µF)

10

Regulated outputs (#)

1

Features

Enable, Reverse Current Protection

Accuracy (%)

2.5

Dropout voltage (Vdo) (typ) (mV)

300

Operating temperature range (°C)

-40 to 125

SOT-223 (DCQ)

6

45.89 mm² 6.5 x 7.06

TO-263 (KTT)

5

154.8384 mm² 10.16 x 15.24

Optimized for Fast Transient Response
Output Current: 1.5 A
High Output Voltage Accuracy: 1% at 25°C
Dropout Voltage: 300 mV
Low Noise: 35 µV_RMS (10 Hz to 100 kHz)
High Ripple Rejection: 68 dB at 1 kHz
1-mA Quiescent Current
No Protection Diodes Needed
Controlled Quiescent Current in Dropout
Fixed Output Voltages: 1.5 V, 1.8 V, 2.5 V, 3.3 V
Adjustable Output from 1.21 V to 20 V (TPS7A4501 Only)
Less Than 1-µA Quiescent Current in Shutdown
Stable With 10-µF Ceramic Output Capacitor
Reverse-Battery Protection
Reverse Current Protection

Optimized for Fast Transient Response
Output Current: 1.5 A
High Output Voltage Accuracy: 1% at 25°C
Dropout Voltage: 300 mV
Low Noise: 35 µV_RMS (10 Hz to 100 kHz)
High Ripple Rejection: 68 dB at 1 kHz
1-mA Quiescent Current
No Protection Diodes Needed
Controlled Quiescent Current in Dropout
Fixed Output Voltages: 1.5 V, 1.8 V, 2.5 V, 3.3 V
Adjustable Output from 1.21 V to 20 V (TPS7A4501 Only)
Less Than 1-µA Quiescent Current in Shutdown
Stable With 10-µF Ceramic Output Capacitor
Reverse-Battery Protection
Reverse Current Protection

The TPS7A45xx devices are low-dropout (LDO) regulators optimized for fast transient response. The device can supply 1.5 A of output current with a dropout voltage of 300 mV. Operating quiescent current is 1 mA, dropping to less than 1 µA in shutdown. Quiescent current is well controlled; it does not rise in dropout as with many other regulators. In addition to fast transient response, the TPS7A45xx regulators have very-low output noise, which makes them ideal for sensitive RF supply applications.

Output voltage range is from 1.21 to 20 V. The TPS7A45xx regulators are stable with output capacitance as low as 10 µF. Small ceramic capacitors can be used without the necessary addition of ESR as is common with other regulators. Internal protection circuitry includes reverse-battery protection, current limiting, thermal limiting, and reverse-current protection. The devices are available in fixed output voltages of 1.5 V, 1.8 V, 2.5 V, 3.3 V, and as an adjustable device with a 1.21-V reference voltage.

The TPS7A45xx devices are low-dropout (LDO) regulators optimized for fast transient response. The device can supply 1.5 A of output current with a dropout voltage of 300 mV. Operating quiescent current is 1 mA, dropping to less than 1 µA in shutdown. Quiescent current is well controlled; it does not rise in dropout as with many other regulators. In addition to fast transient response, the TPS7A45xx regulators have very-low output noise, which makes them ideal for sensitive RF supply applications.

Output voltage range is from 1.21 to 20 V. The TPS7A45xx regulators are stable with output capacitance as low as 10 µF. Small ceramic capacitors can be used without the necessary addition of ESR as is common with other regulators. Internal protection circuitry includes reverse-battery protection, current limiting, thermal limiting, and reverse-current protection. The devices are available in fixed output voltages of 1.5 V, 1.8 V, 2.5 V, 3.3 V, and as an adjustable device with a 1.21-V reference voltage.

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	类型	标题		下载最新的英语版本		日期
*	数据表	TPS7A45xx Low-Noise Fast-Transient-Response 1.5-A Low-Dropout Voltage Regulators 数据表 (Rev. F)	PDF \| HTML			2015年 11月 18日
	应用手册	LDO 噪声揭秘 (Rev. B)	PDF \| HTML	英语版 (Rev.B)	PDF \| HTML	2020年 9月 16日
	应用手册	Using Thermal Calculation Tools for Analog Components (Rev. A)				2019年 8月 30日
	应用手册	A Topical Index of TI LDO Application Notes (Rev. F)				2019年 6月 27日
	应用手册	LDO PSRR Measurement Simplified (Rev. A)	PDF \| HTML			2017年 8月 9日
	应用手册	简化的 LDO PSRR 测量		最新英语版本 (Rev.A)	PDF \| HTML	2010年 7月 28日
	EVM 用户指南	TPS7A45xxEVM-385 (Rev. A)				2008年 10月 8日