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TPS7B86-Q1
SBVS362 –JUNE 2020
TPS7B86-Q1 500-mA, 40-V, Low-Dropout Regulator
With Power-Good
1 Features
3 Description
The TPS7B86-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 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
•
•
•
Maximum output current: 500 mA
Output voltage accuracy: ±1% (max)
Low dropout voltage:
The device has a 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% over line,
load, and temperature.
–
500 mV (max) at 450 mA (VOUT ≥ 3.3 V)
•
•
Low quiescent current:
–
–
20 µA (typ) at light loads
5 µA (max) when disabled
Excellent line transient response:
The device is equipped with a power-good output to
indicate when the output voltage is close to its final
value. The power-good delay can be adjusted by
external components, thus allowing the delay time to
be configured for a specific system.
–
–
±2% VOUT deviation during cold-crank
±2% VOUT deviation (1-V/µs VIN slew rate)
•
•
•
•
Dropout voltage: 555 mV (max) at VOUT ≥ 3.3 V
Power-good with programmable delay period
Stable with a 2.2-µF or larger capacitor
Package options:
The device is available in thermally conductive
packaging to allow the device to efficiently transfer
heat to the circuit board.
–
–
3-pin TO-252 package: (RθJA): 29.7°C/W
8-pin SO-8 package: (RθJA): 41.8°C/W
Device Information(1)
PART NUMBER
PACKAGE
HSOP (8)
TO-252 (5)
BODY SIZE (NOM)
4.89 mm × 3.90 mm
6.60 mm × 6.10 mm
2 Applications
TPS7B86-Q1
•
•
•
Reconfigurable instrument clusters
Body control modules (BCM)
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Always-on battery-connected applications:
–
–
Automotive gateways
Remote keyless entries (RKE)
Output Equal to Reference Voltage
Line Transient Response (3-V/µs VIN Slew Rate)
TPS7B86-Q1
V
I
45
40
35
30
25
20
15
10
5
0.25
V
V
bat
reg
VIN
VOUT
10 …F
0.1 …F
0.2
0.15
0.1
EN
0.05
0
-0.05
-0.1
-0.15
-0.2
GND
GND
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.