SNVS048C – MAY 2004 – REVISED SEPTEMBER 2011
LM4130 Precision Micropower Low Dropout Voltage Reference
Check for Samples: LM4130
•2 Small SOT23-5 package
• High output voltage accuracy 0.05%
• Low Temperature Coefficient 10 ppm/°C
• Stable with capacitive loads to 100µF
• Low dropout voltage ≤275 mV @ 10 mA
• Supply Current ≤75 μA
• Full accuracy −40°C to 85°C
• Extended operation to 125°C
• Excellent load and line regulation
• Output current 20 mA
• Output impedance < 1Ω
• Voltage options: 2.500V and 4.096V
• Portable, battery powered equipment
• Instrumentation and process control
• Automotive & Industrial
• Test equipment
• Data acquisition systems
• Precision regulators
• Battery chargers
• Base stations
• Medical equipment
• Servo systems
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 assembly of die into
plastic packages limit the accuracy of references
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 packaging are important for cost-critical
and space-critical applications.
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 advantage, 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.
Connection Diagram and Pin Configuration
*Optional, Recommended for improved transient response and
input noise reduction.
(See Application Information)
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