Datasheet

General Description
The LM4050/LM4051 are precision two-terminal, shunt-
mode, bandgap voltage references available in fixed reverse
breakdown voltages of 1.225V, 2.048V, 2.500V, 3.000V,
3.3V, 4.096V, and 5.000V. Ideal for space-critical applica-
tions, the LM4050/LM4051 are offered in the sub miniature
3-pin SC70 surface-mount packages (1.8mm x 1.8mm),
50% smaller than comparable devices in SOT23 surface-
mount package (SOT23 versions are also available).
Laser-trimmed resistors ensure excellent initial accuracy.
With a 50ppm/°C temperature coefficient, these devices
are offered in three grades of initial accuracy ranging from
0.1% to 0.5%. The LM4050/LM4051 have a 60µA to 15mA
shunt-current capability with low dynamic impedance,
ensuring stable reverse breakdown voltage accuracy over
a wide range of operating temperatures and currents. The
LM4050/LM4051 do not require an external stabilizing
capacitor while ensuring stability with any capacitive loads.
The LM4050/LM4051 specifications are guaranteed over
the temperature range of -40°C to +125°C.
Applications
● Portable, Battery-Powered Equipment
● Notebook Computers
● Cell Phones
● Industrial Process Controls
Features
● 50ppm/°C (max) Temperature Coefficient Guaranteed
over the -40°C to +125°C Temperature Range
● Ultra-Small 3-Pin SC70 Package
● 0.1% (max) Initial Accuracy
● Wide Operating Current Range: 60µA to 15mA
● Low 28µV
RMS
Output Noise (10Hz to 10kHz)
● 1.225V, 2.048V, 2.500V, 3.000V, 3.3V, 4.096V, and
5.000V Fixed Reverse Breakdown Voltages
● No Output Capacitors Required
● Tolerates Capacitive Loads
Ordering Information appears at end of data sheet.
19-2563; Rev 7; 1/13
-
1
3 N.C.*
+
+
LM4050
LM4051
SC70/SOT23
TOP VIEW
2
*PIN 3 MUST BE LEFT UNCONNECTED OR CONNECTED TO PIN 2.
LM4050
I
LOAD
I
SHUNT
R
S
V
S
V
R
I
SHUNT
+ I
LOAD
LM4050/LM4051 50ppm/°C Precision Micropower Shunt Voltage
References with Multiple Reverse Breakdown Voltages
Pin Conguration
Typical Operating Circuit