product detailed information
The LT3045 is a high performance, low dropout linear regulator with LTC's ultra low noise and ultra high PSRR architecture for powering noise sensitive applications. Designed for precision current reference followed by high-performance voltage buffers, the LT3045 can be easily paralleled to further reduce noise, increase output current, and dissipate heat on printed circuit boards. The device delivers 500mA at a typical 260mV dropout voltage. The nominal operating quiescent current is 2.2mA and drops to <<1µA when turned off.
Ultra-low RMS noise: 0.8µVRMS (10Hz to 100kHz)
Ultra-low concentrating noise: 2nV/vHz at 10kHz
Ultra-high PSRR: 76dB at 1MHz
Output current: 500mA
Wide range of input voltages: 1.8V to 20V
Single capacitor improves noise and PSRR
100µA set pin current: ±1% initial accuracy
Single resistor program output voltage
High bandwidth: 1 MHz
Programmable current limit
Low dropout voltage: 260mV
Output voltage range: 0V to 15V
Programmable power supply is normal
Quick start function
Precision Start / UVLO
Can be connected in parallel for lower noise and higher current
Internal current limit with foldback
Minimum output capacitor: 10µF ceramic
Reverse battery and reverse current protection
12-lead MSOP and 10-lead 3mm ´ 3mm DFN package
application
RF power supply: PLL, VCO, mixer, LNA, PAS
Very low noise meter
High speed / high precision data converter
Medical applications: imaging, diagnosis
Precision power supply
Switching power supply rear regulator
Product Specifications
Attribute value
Falling voltage at maximum current 450 mV @ 500 mA
Output voltage 0 ? 15 V
Output type adjustable
Package Type MSOP
Maximum output current 500mA
Mounting Type Surface Mount
Minimum input voltage 1.8 V
Maximum input voltage 20 V
Number of pins 12
Number of outputs 1
Polarity
Quiescent current 2.2mA
Accuracy ±1%
Minimum operating temperature -40 °C
Maximum operating temperature +125 °C
Length 4.03mm
Height 0.86mm
Size 4.03 x 3 x 0.86mm
Line regulation ±3 µV/V
Enabled
Load regulation 0.5 mV
Width 3mm