1 Features

1? Qualified for Automotive Applications

? AEC-Q100 Qualified With the Following Results:

– Device Temperature Grade 1: –40oC to

+125oC Ambient Operating Temperature

Range

– Device HBM ESD Classification Level 2

? 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: 1.8 V, 2.048 V, 2.5 V, 3 V,

3.3 V, 4.096 V

? Custom Voltage Options Available

(1.8 V to 4.096 V)

? VIN Range of VREF + 400 mV to 5.5 V at 10 mA

? Stable With Low-ESR Ceramic Capacitors

2 Applications

? Instrumentation and Process Control

? Test Equipment

? Data Acquisition Systems

? Base Stations

? Servo Systems

? Portable, Battery-Powered Equipment

? Automotive and 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 breakthrough is the use of

EEPROM registers for correction of curvature,

temperature coefficient (tempco), and accuracy on a

CMOS band-gap architecture allowing 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 can deliver

up to 20 mA and does not require an output capacitor

or buffer amplifier. These advantages along with the

SOT-23 packaging are important for space-critical

applications.

Series references provide lower power consumption

than shunt references, because they do not have to

idle the maximum possible load current under no-load

conditions. This advantage, the low quiescent current

(60 μA), and the low dropout voltage (400 mV) 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 10 ppm/°C or less, while

the lowest grade devices (E) have an initial accuracy

of 0.5% and a tempco of 30 ppm/°C.