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TPS7B8450QDCYRQ1M3

更新时间： 2024-11-24 11:08:03
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德州仪器 - TI 稳压器
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33页 1097K
描述
具有使能和快速瞬态响应的汽车类 150mA、40V 低压降 (LDO) 线性稳压器 | DCY | 4 | -40 to 125

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Software  
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TPS7B84-Q1  
SBVS361 –APRIL 2020  
TPS7B84-Q1 150-mA, 40-V, Adjustable, Low-Dropout Regulator  
1 Features  
3 Description  
The TPS7B84-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 dump) that are  
anticipated in automotive systems. With only a 20-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.  
1
•
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: 3 V to 40 V (42 V max)  
Output voltage range:  
–
–
Adjustable output: 1.2 V to 18 V  
Fixed output: 3.3 V and 5 V  
•
•
•
Output current: up to 150 mA  
Output voltage accuracy: ±1.5% (max)  
Low dropout voltage:  
The TPS7B84-Q1 has both fixed and adjustable  
output types. The wide output voltage range allows  
the device to generate the bias voltage for silicon  
carbide (SiC) gate drivers and microphones as well  
as power MCUs and processors.  
–
255 mV (max) at 150 mA (VOUT ≥ 3.3 V)  
•
•
Low quiescent current:  
–
–
20 µA (typ) at light loads  
5 µA (max) when disabled  
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 ±1.5% over line,  
load, and temperature.  
Excellent line transient response:  
–
–
±2% VOUT deviation during cold-crank  
±2% VOUT deviation (1-V/µs VIN slew rate)  
•
•
Stable with a 2.2-µF or larger capacitor  
Package options:  
The device is available in both a SOT223 package  
and a small VSON package with wettable flanks that  
facilitates a compact printed circuit board (PCB)  
design. The low thermal resistance enables sustained  
operation despite significant dissipation across the  
device.  
–
–
DRB (8-pin VSON), RθJA: 50.8ºC/W  
DCY (4-pin SOT-223), RθJA: 85.5ºC/W  
2 Applications  
•
•
•
Reconfigurable instrument clusters  
Body control modules (BCM)  
Device Information(1)  
Always-on battery-connected applications:  
PART NUMBER  
PACKAGE  
VSON (8)  
SOT-223 (4)  
BODY SIZE (NOM)  
3.00 mm × 3.00 mm  
6.50 mm × 3.50 mm  
–
–
Automotive gateways  
TPS7B84-Q1  
Remote keyless entries (RKE)  
(1) For all available packages, see the orderable addendum at  
the end of the data sheet.  
Line Transient Response (3-V/µs VIN Slew Rate)  
45  
40  
35  
30  
25  
20  
15  
10  
5
0.25  
VIN  
VOUT  
Typical Application Schematic  
0.2  
0.15  
0.1  
IN  
OUT  
FB  
EN  
TPS7B84-Q1  
0.05  
0
GND  
-0.05  
-0.1  
-0.15  
-0.2  
0
0
500  
1000  
1500  
Time (ms)  
2000  
2500  
3000  
1
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. ADVANCE INFORMATION for pre-production products; subject to  
change without notice.  
 
 
 
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