LM4121

LM4121 www.ti.com SNVS073C – APRIL 2000 – REVISED APRIL 2013 LM4121 Precision Micropower Low Dropout Voltage Reference Check for Samples: LM4121 FEATURES (LM4121-1.2) 1 2 Small SOT23-5 Package Low Voltage Operation High Output Voltage Accuracy: 0.2% Source and Sink Current Output: ±5 mA Supply current: 160 μA Typ. Low Temperature Coefficient: 50 ppm/°C Enable Pin Output Voltages: 1.25V and Adjustable Industrial Temperature Range: −40°C to +85°C (For Extended Temperature Range, −40°C to 125°C, Contact Texas Instruments) APPLICATIONS Portable, Battery Powered Equipment Instrumentation and Process Control Automotive & Industrial Test Equipment Data Acquisition Systems Precision Regulators Battery Chargers Base Stations Communications Medical Equipment DESCRIPTION The LM4121 is a precision bandgap voltage reference available in a fixed 1.25V and adjustable version with up to 5 mA current source and sink capability. This series reference operates with input voltages as low as 1.8V and up to 12V consuming 160 µA (Typ.) supply current. In power down mode, device current drops to less than 2 μA. The LM4121 comes in two grades A and Standard. The best grade devices (A) have an initial accuracy of 0.2%, while the standard have an initial accuracy of 0.5%, both with a tempco of 50ppm/°C ensured from −40°C to +125°C. The very low operating voltage, low supply current and power-down capability of the LM4121 makes this product an ideal choice for...