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TPS7B87-Q1_V01

更新时间： 2024-11-24 02:50:07
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德州仪器 - TI /
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38页 3896K
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TPS7B87-Q1 500-mA, 40-V, Low-Dropout Regulator With Power-Good

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TPS7B87-Q1_V01 数据手册

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TPS7B87-Q1  
SBVS363A – DECEMBER 2020 – REVISED APRIL 2021  
TPS7B87-Q1 500-mA, 40-V, Low-Dropout Regulator  
With Power-Good  
1 Features  
3 Description  
•
AEC-Q100 qualified for automotive applications:  
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 40 V, which allows the device to  
withstand transients (such as load dumps) that are  
anticipated in automotive systems. With only a 17-  
µA quiescent current at light loads, the device is an  
optimal solution for powering always-on components  
such as microcontrollers (MCUs) and controller area  
network (CAN) transceivers in standby systems.  
– Temperature grade 1: –40°C to +125°C, TA  
– Junction temperature: –40°C to +150°C, TJ  
Input voltage range: 3 V to 40 V (42 V max)  
Output voltage range: 3.3 V and 5 V (fixed)  
Maximum output current: 500 mA  
Output voltage accuracy: ±0.85% (max)  
Low dropout voltage:  
– 475 mV (max) at 450 mA  
Low quiescent current:  
– 17 µA (typ) at light loads  
Excellent line transient response:  
– ±2% VOUT deviation during cold-crank  
– ±2% VOUT deviation (1-V/µs VIN slew rate)  
Power-good with programmable delay period  
Stable with a 2.2-µF or larger capacitor  
Functional Safety-Capable  
– Documentation available to aid functional safety  
system design  
Package options:  
•
•
•
•
•
•
•
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.  
•
– 5-pin TO-252 package: 29.7°C/W RθJA  
– 8-pin HSOIC-8 package with thermal pad:  
41.8°C/W RθJA  
The device is available in thermally conductive  
packaging to allow the device to efficiently transfer  
heat to the circuit board.  
2 Applications  
Device Information (1)  
•
•
•
Reconfigurable instrument clusters  
Body control modules (BCM)  
Always-on battery-connected applications:  
– Automotive gateways  
– Remote keyless entries (RKE)  
PART NUMBER  
PACKAGE  
HSOIC (8)  
TO-252 (5)  
BODY SIZE (NOM)  
4.89 mm × 3.90 mm  
6.60 mm × 6.10 mm  
TPS7B87-Q1  
(1) For all available packages, see the orderable addendum at  
the end of the data sheet.  
45  
0.25  
0.2  
VIN  
VOUT  
40  
35  
30  
25  
20  
15  
10  
5
0.15  
0.1  
IN  
OUT  
0.05  
0
TPS7B87-Q1  
-0.05  
-0.1  
-0.15  
-0.2  
DELAY  
PG  
I/O  
GND  
0
0
500  
1000  
1500  
Time (ms)  
2000  
2500  
3000  
Output Equal to Reference Voltage  
Line Transient Response (3-V/µs VIN Slew Rate)  
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,  
intellectual property matters and other important disclaimers. PRODUCTION DATA.  
 
 
 
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