LM4132_15 Datasheet, PDF (1/37 Pages) Texas Instruments – LM4132/LM4132-Q1 SOT-23 Precision Low Dropout Voltage Reference

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LM4132, LM4132-Q1
SNVS372D – AUGUST 2005 – REVISED APRIL 2015
LM4132/LM4132-Q1 SOT-23 Precision Low Dropout Voltage Reference
1 Features
•1 Output Initial Voltage Accuracy 0.05%
• Low Temperature Coefficient 10 ppm/°C
• Low Supply Current, 60 µA
• Enable Pin Allowing a 3 µA Shutdown Mode
• 20 mA Output Current
• Voltage Options 1.8V, 2.048 V, 2.5 V, 3.0 V, 3.3
V, 4.096 V
• Custom Voltage Options Available (1.8V to
4.096V)
• V_IN Range of V_REF + 400 mV to 5.5 V @ 10 mA
• Stable with Low ESR Ceramic Capacitors
• SOT23-5 Package
• LM4132AQ1/BQ1/CQ1/DQ1/EQ1 are AEC Q-100
grade 1 qualified and are manufactured on an
Automotive Grade flow
2 Applications
• Instrumentation & Process Control
• Test Equipment
• Data Acquisition Systems
• Base Stations
• Servo Systems
• Portable, Battery Powered Equipment
• Automotive & Industrial
• Precision Regulators
• Battery Chargers
• Communications
• Medical Equipment
3 Description
The LM4132 family of precision voltage references
performs comparable to the best laser-trimmed
bipolar references, but in cost effective CMOS
technology. The key to this break through is the use
of EEPROM registers for correction of curvature,
tempco, and accuracy on a CMOS bandgap
architecture that allows package level programming
to overcome assembly shift. The shifts in voltage
accuracy and tempco during assembly of die into
plastic packages limit the accuracy of references
trimmed with laser techniques.
Unlike other LDO references, the LM4132 is capable
of delivering up to 20mA and does not require an
output capacitor or buffer amplifier. These
advantages and the SOT23 packaging are important
for space-critical applications.
Series references provide lower power consumption
than shunt references, since they do not have to idle
the maximum possible load current under no load
conditions. This advantage, the low quiescent current
(60µA), and the low dropout voltage (400mV) make
the LM4132 ideal for battery-powered solutions.
The LM4132 is available in five grades (A, B, C, D
and E) for greater flexibility. The best grade devices
(A) have an initial accuracy of 0.05% with a specified
temperature coefficient of 10ppm/°C or less, while the
lowest grade parts (E) have an initial accuracy of
0.5% and a tempco of 30ppm/°C.
Input
5V
V_IN
C_IN^*
V_REF
LM4132
C_OU^*_T
Output
2.5V
Enable
EN
GND
*Note: The capacitor C_IN is required and
the capacitor C_OUT is optional.
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.