LT6660 Tiny Micropower Precision Series References in 2mm × 2mm DFN UFEATURESDESCRIPTIO ■ No Output Capacitor Required The LT®6660 is a family of micropower series references ■ Low Drift: 20ppm/°C Max that combine high accuracy and low drift with low power ■ High Accuracy: 0.2% Max dissipation and extremely small package size. These se- ■ Low Supply Current ries references use curvature compensation to obtain ■ 20mA Output Current Guaranteed low temperature coefficient, and laser trimmed precision ■ Reverse-Battery Protection thin-film resistors to achieve high output accuracy. The ■ Low IR Reflow Induced Stress: 0.02% Typ LT6660 will supply up to 20mA with excellent line regula- ■ Voltage Options: 2.5V, 3V, 3.3V, 5V and 10V tion characteristics, making it ideal for precision regulator ■ Space-Saving Alternative to the LT1460 applications. ■ 3-Lead 2mm
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2mm
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0.75mm DFN Package The LT6660 family of series references provide supply current and power dissipation advantages over shunt U references that must idle the entire load current to oper- APPLICATIO S ate. Additional y, the LT6660 does not require an output ■ Handheld Instruments compensation capacitor. This feature is important in ■ Precision Regulators applications where PC board space is a premium, fast set- ■ A/D and D/A Converters tling is demanded, or total capacitance must be kept to a ■ Power Supplies minimum, as in intrinsic safety applications. Reverse-bat- ■ Hard Disk Drives tery protection keeps these references from conducting ■ Sensor Modules reverse current. , LT, LTC and LTM are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. UTYPICAL APPLICATIOLT6660H VOUT Shift Due to IR Reflow 32 28 Basic Connection 24 20 LT6660 VOUT + 0.9V ≤ VIN ≤ 20V IN OUT VOUT 16 C1 GND 12 0.1µF DISTRIBUTION (%) 6660 TA01 8 4 0 –0.09 –0.05 –0.01 0.01 0.05 0.09 CHANGE IN VOUT (%) 6660 TA01b 6660fa 1
