LM4130 Datasheet, PDF (1/12 Pages) National Semiconductor (TI) – Precision Micropower Low Dropout Voltage Reference

November 1999
LM4130
Precision Micropower Low Dropout Voltage Reference
General Description
The LM4130 family of precision voltage references performs
comparable to the best laser-trimmed bipolar references, but
in cost effective CMOS technology. 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 as-
sembly of die into plastic packages limit the accuracy of ref-
erences trimmed with laser techniques.
Unlike other LDO references, the LM4130 requires no output
capacitor. Neither is a buffer amplifier required, even with
loads up to 20mA. These advantages and the SOT23 pack-
aging are important for cost-critical and space-critical appli-
cations.
Series references provide lower power consumption than
shunt references, since they don’t have to idle the maximum
possible load current under no load conditions. This advan-
tage, the low quiescent current (75µA), and the low dropout
voltage(275mV) make the LM4130 ideal for battery-powered
solutions.
The LM4130 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 guaranteed 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.
Features
n Small SOT23-5 package
n High output voltage accuracy
0.05%
n Low Temperature Coefficient
10 ppm/˚C
n Stable with capacitive loads to 100µF
n Low dropout voltage
≤275 mV @ 10 mA
n Supply Current
≤75 µA
n Full accuracy
−40˚C to 85˚C
n Extended operation to 125˚C
n Excellent load and line regulation
n Output current
20 mA
n Output impedance
< 1Ω
n Voltage options:
2.048V, 2.500V, and 4.096V
Applications Summary
n Portable, battery powered equipment
n Instrumentation and process control
n Automotive & Industrial
n Test equipment
n Data acquisition systems
n Precision regulators
n Battery chargers
n Base stations
n Communications
n Medical equipment
n Servo systems
Connection Diagram and Pin Configuration
DS101046-1
*Optional, Recommended for improved transient response and
input noise reduction.
(See Application Information)
DS101046-2
Refer to the Ordering Information Table in this Data Sheet for Specific Part
Number
SOT23-5 Surface Mount Package
© 1999 National Semiconductor Corporation DS101046
www.national.com