Linear Technology Corp. recently announced the LT3045 an ultra-low noise, ultra-high power supply ripple rejection (PSRR) low-dropout voltage linear regulator. It’s a higher output current version of its 200-mA LT3042 ultra-low noise LDO.
The LT3045’s features, benefits, and specs:
- Ultra-low RMS Noise: 0.8 µVRMS (10 Hz to 100 kHz)
- Ultra-low Spot Noise: 2 nV/√ Hz at 10 kHz
- Ultra-high PSRR: Greater than 90 dB to 10 kHz; greater than 70 dB to 2.5 MHz
- Output Current: 500 mA
- Wide Input Voltage Range: 1.8 to 20 V
- Single Capacitor Improves Noise and PSRR
- 100-µA SET Pin Current: ±1% Initial Accuracy
- Single Resistor Programs Output Voltage
- High Bandwidth: 1 MHz
- Programmable Current Limit
- Low-Dropout Voltage: 260 mV
- Output Voltage Range: 0 to 15 V
- Power Good Flag with Programmable Threshold
- Fast Start-Up Capability
- Precision Enable/UVLO
- Can Be Paralleled for Lower Noise and Higher Current
- Internal Current Limit with Foldback
- Minimum Output Capacitor: 10-μF Ceramic
- Reverse-Battery and Reverse-Current Protection
- 12-Lead MSOP and 10-Lead 3 mm × 3 mm DFN Packages
Source: Linear Technology
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