TPS7A43
SBVS393 – DECETMPBSER7A204230
SBVS393 – DECEMBER 2020
www.ti.com
TPS7A43 50-mA, 85-V, Low IQ, Dual Output Low-Dropout Linear Voltage Regulator
With Precision Enable & Power-Good
1 Features
3 Description
•
•
•
Input voltage: 4 V to 85 V
Ultra-low IQ: 6.5 µA
Wide output voltage range:
– Adjustable: 1.24 V to 14.5 V
– Fixed: 1.25 V to 5.0 V
The TPS7A43 low-dropout (LDO) linear voltage
regulator introduces a combination of a 4-V to 85-V
input voltage range with very-low quiescent current
(IQ).
This device can support a wide range of input
voltages (for example, a 15s battery and 24-V to
48-V line power) and withstand line transient voltages
up to 85 V. These features help modern appliances
meet increasingly stringent energy requirements, and
help extend battery life in portable-power solutions.
•
•
•
•
•
•
•
Intermediate output (MID_OUT): 10 V, 12 V, 15 V
Precision enable
1% accuracy over temperature
Power-good (PG) output (open-drain)
Thermal shutdown and overcurrent protection
Operating junction temperature: –40°C to +125°C
Package: HVSSOP-10 (RθJA = 53.7°C/W)
The TPS7A43 is available in both fixed and adjustable
output versions. Fixed output options are available in
standard voltage options and the adjustable output
version uses external feedback resistors to set the
output voltage from 1.24 V to 14.5 V. The main output
(OUT) has a 1% output regulation accuracy that
provides precision regulation for most microcontroller
(MCU) references. The device also provides a second
intermediate output (MID_OUT) that can be used to
bias gate drivers in place of a discrete regulator. The
MID_OUT uses two logic pins (MVSEL1 and
MVSEL2) to adjust the intermediate output rail
between 10 V, 12 V, or 15 V.
2 Applications
•
•
•
•
•
•
•
Cordless power tools
DC motors and fans
Programmable logic controllers (PLCs)
Field transmitter and process sensors
Smoke and heat detectors
EV charging infrastructure
Battery packs
VOUT
COUT
VIN
IN
OUT
VCC
VSS
CIN
The TPS7A43 features a precision enable input that
helps enable or disable the LDO at a fixed and
accurate threshold voltage using a resistor divider
from the input.
MCU
R1
GND
GND
GND
GND
VEN
FB/NC
EN
R2
GND
TPS7A43
VMID_OUT
MID_OUT
VMVSEL1
GND
MVSEL1
MVSEL2
Gate
Driver
GND
PG
VPG
VMSELV2
The power-good (PG) output is used to monitor the
voltage at the feedback pin to indicate the status of
the output voltage. The EN input and PG output can
be used for sequencing multiple power sources in the
system. The built-in current limit and thermal
shutdown help protect the regulator in the event of a
load short or fault.
GND
R1 and R2 resistors are only for adjustable version.
Powering Cordless Power Tools
VIN
IN
OUT
VOUT
CIN
COUT
R1
GND
NC
EN
Device Information (1)
GND
TPS7A43
R2
VMID_OUT
MID_OUT
PART NUMBER
PACKAGE
BODY SIZE (NOM)
MVSEL1
MVSEL2
GND
VIN
GND
R3
TPS7A43
HVSSOP (10)
3.00 mm × 3.00 mm
GND
PG
(1) For all available packages, see the package option
addendum at the end of the datasheet.
R4
GND
GND
Setting MID_OUT voltage to 12 V or 15 V using R3 and R4 resistors.
Powering the MCU for Battery Packs
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
Copyright © 2020 Texas Instruments Incorporated
Submit Document Feedback
intellectual property matters and other important disclaimers. ADVANCE INFORMATION for preproduction products; subject to change
Product Folder Links: TPS7A43
1
without notice.