Texas Instruments LP2982 Handleiding
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LP2982 50mA, Low-Noise, Low-Dropout Regulator in SOT-23 Package
1 Features
•V
IN
range (new chip): 2.5V to 16V
•V
OUT
range (new chip): 1.2V to 5.0V
•V
OUT
accuracy:
–±1% for A-grade (legacy chip)
–±1.5% for standard-grade (legacy chip)
–±0.5% (new chip)
•±1% output accuracy over load and temperature
(new chip)
•Output current: Up to 50mA
•Low I
Q
(new chip): 69μA at I
LOAD
= 0mA
•Low I
Q
(new chip): 380μA at I
LOAD
= 50mA
•Shutdown current:
–1μA for legacy chip
–2.25μA for new chip
•Low noise: 30μV
RMS
with 10nF bypass capacitor
•Output current limiting and thermal protection
•Stable with 2.2µF ceramic capacitors (new chip)
•High PSRR: 70dB at 1kHz, 40dB at 1MHz
•Operating junction temperature: –40°C to +125°C
•Package: 5-pin SOT-23 (DBV)
2 Applications
•Factory automation and control
•Industrial transport (non-car, non-light truck)
•Grid infrastructure
•Medical
3 Description
The LP2982 is a fixed-output, wide-input, low-noise,
low-dropout voltage regulator supporting an input
voltage range from 2.5V to 16V (for new chip) and
up to 50mA of load current. The LP2982 supports an
output range of 1.2V to 5.0V (new chip).
Additionally, the LP2982 (new chip) has a ±1% output
accuracy across load, and temperature that can meet
the needs of low-voltage microcontrollers (MCUs) and
processors.
Low output noise of 30µV
RMS
(with 10nF bypass
capacitors) and wide bandwidth PSRR performance
of greater than 70dB at 1kHz and 40dB at 1MHz
help attenuate the switching frequency of an upstream
DC/DC converter and minimize post regulator filtering.
The new chip version of the LP2982 includes an
internal soft-start mechanism to reduce inrush current
during start up, thus minimizing input capacitance
requirement. Standard protection features, such as
overcurrent and overtemperature protection, are
included.
The LP2982 is available in a 5-pin 2.9mm × 2.8mm
SOT-23 (DBV) package.
Package Information
PART NUMBERPACKAGE
(1)
PACKAGE SIZE
(2)
LP2982DBV (SOT-23, 5)2.9mm × 2.8mm
(1)For more information, see the Mechanical, Packaging, and
Orderable Information.
(2)The package size (length × width) is a nominal value and
includes pins, where applicable.
INOUT
ON/
OFF
LP2982
GND
C
IN
GND
GND
C
OUT
GND
V
IN
V
OUT
BYPASS
GND
C
BYPASS
Simplified Schematic
Temperature(°C)
Dropout(mV)
-75-50-250255075100125150
0
50
100
150
200
250
1mA10mA50mA
Dropout Voltage vs Temperature (New Chip)
LP2982
SNVS128M – MARCH 2000 – REVISED JUNE 2025
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.
Product specificaties
| Merk: | Texas Instruments |
| Categorie: | Niet gecategoriseerd |
| Model: | LP2982 |
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