TPS7B87-Q1

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500-mA-, 40-V-LDO-Linearregler (Low Dropout) für den Automobilbereich mit Power-Good

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Datenblatt

document-pdfAcrobat TPS7B87-Q1 Automotive, 500mA, 40V, Low-Dropout Regulator With Power-Good datasheet (Rev. B) (Englisch) PDF | HTML

TPS7B87-Q1

AKTIV

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Produktdetails

Rating

Automotive

Vin (max) (V)

40

Vin (min) (V)

3

Iout (max) (A)

0.5

Output options

Fixed Output

Vout (max) (V)

5

Vout (min) (V)

3.3

Fixed output options (V)

3.3, 5

Noise (µVrms)

252

PSRR at 100 KHz (dB)

70

Iq (typ) (mA)

0.017

Features

Power good

Thermal resistance θJA (°C/W)

29.7

TI functional safety category

Functional Safety-Capable

Load capacitance (min) (µF)

2.2

Regulated outputs (#)

1

Accuracy (%)

0.85

Dropout voltage (Vdo) (typ) (mV)

360

Operating temperature range (°C)

-40 to 150

Rating

Automotive

Vin (max) (V)

40

Vin (min) (V)

3

Iout (max) (A)

0.5

Output options

Fixed Output

Vout (max) (V)

5

Vout (min) (V)

3.3

Fixed output options (V)

3.3, 5

Noise (µVrms)

252

PSRR at 100 KHz (dB)

70

Iq (typ) (mA)

0.017

Features

Power good

Thermal resistance θJA (°C/W)

29.7

TI functional safety category

Functional Safety-Capable

Load capacitance (min) (µF)

2.2

Regulated outputs (#)

1

Accuracy (%)

0.85

Dropout voltage (Vdo) (typ) (mV)

360

Operating temperature range (°C)

-40 to 150

TO-252 (KVU)

5

66.726 mm² (6.6 mm × 10.11 mm)

HSOIC (DDA)

8

29.4 mm² (4.9 mm × 6 mm)

AEC-Q100 qualified for automotive applications:
- Temperature grade 1: –40°C to +125°C, TA
- Junction temperature: –40°C to +150°C, TJ
Input voltage range: 3V to 40V (42V max)
Output voltage range: 3.3V and 5V (fixed)
Maximum output current: 500mA
Output voltage accuracy: ±0.85% (max)
Low dropout voltage:
- 475mV (max) at 450mA
Low quiescent current:
- 17µA (typ) at light loads
Excellent line transient response:
- ±2% VOUT deviation during cold-crank
- ±2% VOUT deviation (1V/µs VIN slew rate)
Power-good with programmable delay period
Stable with a 2.2µF or larger capacitor
Functional Safety-Capable
- Documentation available to aid functional safety system design
Package options:
- 5-pin TO-252 package: 29.7°C/W RθJA
- 8-pin HSOIC-8 package with thermal pad: 41.8°C/W RθJA

AEC-Q100 qualified for automotive applications:
- Temperature grade 1: –40°C to +125°C, TA
- Junction temperature: –40°C to +150°C, TJ
Input voltage range: 3V to 40V (42V max)
Output voltage range: 3.3V and 5V (fixed)
Maximum output current: 500mA
Output voltage accuracy: ±0.85% (max)
Low dropout voltage:
- 475mV (max) at 450mA
Low quiescent current:
- 17µA (typ) at light loads
Excellent line transient response:
- ±2% VOUT deviation during cold-crank
- ±2% VOUT deviation (1V/µs VIN slew rate)
Power-good with programmable delay period
Stable with a 2.2µF or larger capacitor
Functional Safety-Capable
- Documentation available to aid functional safety system design
Package options:
- 5-pin TO-252 package: 29.7°C/W RθJA
- 8-pin HSOIC-8 package with thermal pad: 41.8°C/W RθJA

The TPS7B87-Q1 is a low-dropout linear regulator designed to connect to the battery in automotive applications. The device has an input voltage range extending to 40V, which allows the device to withstand transients (such as load dumps) that are anticipated in automotive systems. With only a 17µA quiescent current at light loads, the device is designed for powering always-on components such as microcontrollers (MCUs) and controller area network (CAN) transceivers in standby systems.

The device has state-of-the-art transient response that allows the output to quickly react to changes in load or line (for example, during cold-crank conditions). Additionally, the device has a novel architecture that minimizes output overshoot when recovering from dropout. During normal operation, the device has a tight DC accuracy of ±0.85% over line, load, and temperature.

The power-good delay can be adjusted by external components, allowing the delay time to be configured to fit application-specific systems.

The device is available in thermally conductive packaging to allow the device to efficiently transfer heat to the circuit board.

The TPS7B87-Q1 is a low-dropout linear regulator designed to connect to the battery in automotive applications. The device has an input voltage range extending to 40V, which allows the device to withstand transients (such as load dumps) that are anticipated in automotive systems. With only a 17µA quiescent current at light loads, the device is designed for powering always-on components such as microcontrollers (MCUs) and controller area network (CAN) transceivers in standby systems.

The device has state-of-the-art transient response that allows the output to quickly react to changes in load or line (for example, during cold-crank conditions). Additionally, the device has a novel architecture that minimizes output overshoot when recovering from dropout. During normal operation, the device has a tight DC accuracy of ±0.85% over line, load, and temperature.

The power-good delay can be adjusted by external components, allowing the delay time to be configured to fit application-specific systems.

The device is available in thermally conductive packaging to allow the device to efficiently transfer heat to the circuit board.

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Top-Dokumentation	Typ	Titel	Format-Optionen		Datum
*	Datenblatt	TPS7B87-Q1 Automotive, 500mA, 40V, Low-Dropout Regulator With Power-Good datasheet (Rev. B)	PDF \| HTML	05.11.2025
	Anwendungshinweis	An empirical analysis of the impact of board layout on LDO thermal performance (Rev. A)	PDF \| HTML	23.09.2025
	Informationen zur funktionalen Sicherheit	TPS7B87-Q1 Functional Safety FIT Rate, FMD and Pin FMA	PDF \| HTML	01.07.2025
	Anwendungshinweis	A Topical Index of TI LDO Application Notes (Rev. F)		27.06.2019
	E-book	LDO Basics (Rev. A)		08.04.2019
	Technischer Artikel	LDO basics: dropout	PDF \| HTML	16.03.2017

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