TPS7A19 Datasheet, PDF (1/23 Pages) Texas Instruments – 40-V, 450-mA, Wide VIN, Low IQ, Low-Dropout Voltage Regulator with Power Good

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TPS7A19
SBVS256A – MAY 2016 – REVISED SEPTEMBER 2016
TPS7A19
40-V, 450-mA, Wide V_IN, Low I_Q, Low-Dropout Voltage Regulator with Power Good
1 Features
•1 Wide Input Voltage Range: 4 V to 40 V
• Adjustable Output Voltage: 1.5 V to 18 V
• Output Current: 450 mA
• Low Quiescent Current (I_Q): 15 µA
• Low Dropout Voltage: 450 mV (max) at 400 mA
• Power Good with Programmable Delay
• Thermal Shutdown and Overcurrent Protection
• Stable with Ceramic Output Capacitors:
– 10 µF to 500 µF for V_OUT ≥ 2.5 V
– 22 µF to 500 µF for V_OUT < 2.5 V
• Operating Temperature: –40°C to +125°C
• Package: 3-mm × 3-mm SON-8
2 Applications
• Smart Grid Infrastructure and Metering
• Power Tools
• Motor Drives
• Access Control Systems
• Test and Measurement
3 Description
The TPS7A19 is a low-dropout linear regulator (LDO)
with a wide input voltage (V_IN) range up to 40 V,
capable of sourcing high output current (I_OUT) up to
450 mA. This voltage regulator is ideal for generating
a low-voltage supply from wide input-voltage rails.
Not only does the TPS7A19 supply a well-regulated
voltage rail, but the device also withstands and
maintains regulation during voltage transients by
acting as a simple surge protection circuit.
The TPS7A19 consumes only 15 µA of quiescent
current (I_Q) at light loads, thereby lowering the power
consumption for always-on or battery-powered
applications.
The TPS7A19 features integrated thermal shutdown
and overcurrent protection. The TPS7A19 also offers
a power good output (PG) with a programmable delay
that indicates when the output voltage is in regulation.
This feature is useful for power-rail sequencing
functions.
This LDO is available in a small, 3-mm × 3-mm,
thermally-enhanced, 8-pin SON package.
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
TPS7A19
SON (8)
3.00 mm × 3.00 mm
(1) For all available packages, see the package option addendum
at the end of the data sheet.
Typical Application Schematic
4 V to 40 V
VIN
IN
EN
PG
OUT
VOUT
TPS7A19
FB
DELAY
GND
IO
MSP430
VDD
Copyright © 2016, Texas Instruments Incorporated
Quiescent Current vs Input Voltage
at V_OUT = 1.5 V
25
20
15
10
5
0
0
10
20
Input Voltage (V)
±40°C
25°C
125°C
30
40
C003
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. PRODUCTION DATA.