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ATL431LI_V02 Datasheet(Hoja de datos) 1 Page - Texas Instruments

No. de Pieza. ATL431LI_V02
Descripción  ATL431LI / ATL432LI High Bandwidth Low-Iq Programmable Shunt Regulator
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Fabricante  TI1 [Texas Instruments]
Página de inicio  http://www.ti.com
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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.
ATL431LI
ATL432LI
SLVSDU6D – JULY 2017 – REVISED NOVEMBER 2019
ATL431LI / ATL432LI High Bandwidth Low-Iq Programmable Shunt Regulator
1
1 Features
1
Reference voltage tolerance at 25°C
0.5% (B Grade)
1% (A Grade)
Minimum typical output voltage: 2.5 V
Adjustable output voltage: Vref to 36 V
Operation from
−40°C to +125°C (Q temp)
Maximum temperature drift
17 mV (I Temp)
27 mV (Q Temp)
0.3-Ω Typical output impedance
Sink-current capability
Imin = 0.08 mA (max)
IKA = 15 mA (max)
Reference input current IREF: 0.4 μA (max)
Deviation of reference input current over
temperature, II(dev): 0.3 μA (max)
Packages: 1-mm x 1-mm X2SON or SOT23-3
2 Applications
Adjustable voltage and current referencing
Secondary side regulation in Flyback SMPS
Zener diode replacement
Voltage monitoring
Precision constant current sink/source
Comparator with integrated reference
3 Description
The ATL43xLI device is a three-terminal adjustable
shunt regulator, with specified thermal stability over
applicable
automotive,
commercial,
and
military
temperature ranges. The output voltage can be set to
any value between Vref (approximately 2.5 V) and 36
V, with two external resistors. These devices have a
typical output impedance of 0.3 Ω. Active output
circuitry provides a very sharp turn-on characteristic,
making these devices excellent replacements for
Zener diodes in many applications, such as onboard
regulation, adjustable power supplies, and switching
power supplies. This device is a pin-to-pin alternative
to the TL431LI and TL432LI, with lower minimum
operating current to help reduce system power
consumption. The ATL432LI device has exactly the
same functionality and electrical specifications as the
ATL431LI device, but has a different pinout for the
DBZ package. The ATL431LI is also offered in a tiny
X2SON (1.00 mm x 1.00 mm) package which makes
it ideal for space constraint applications.
The ATL431LI device is offered in two grades, with
initial tolerances (at 25°C) of 0.5%, and 1%, for the B
and A grade, respectively. In addition, low output drift
versus temperature ensures good stability over the
entire temperature range.
The
ATL43xLIxQ
devices
are
characterized
for
operation from –40°C to +125°C.
Device Information(1)
PART NUMBER
PACKAGE (PIN)
BODY SIZE (NOM)
ATL43xLI
SOT-23 (3)
2.90 mm x 1.30 mm
ATL431LI
X2SON (4)
1.00 mm x 1.00 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Simplified Schematic




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