LT3093 Series
–20V, 200mA, Ultralow Noise, Ultrahigh PSRR Negative Linear Regulator
Manufacturer: Analog Devices Inc
Catalog
–20V, 200mA, Ultralow Noise, Ultrahigh PSRR Negative Linear Regulator
| Part | Output Type | Current - Quiescent (Iq) | Voltage - Output (Min/Fixed) [Min] | PSRR | Voltage - Output (Max) [Max] | Voltage - Input (Max) [Max] | Output Configuration | Voltage Dropout (Max) | Mounting Type | Operating Temperature [Min] | Operating Temperature [Max] | Number of Regulators | Control Features | Protection Features | Current - Supply (Max) [Max] | Package / Case | Supplier Device Package | Current - Output |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Analog Devices Inc LT3093IDD#TRPBF | Adjustable | 10 µA | 0 V | 73 dB | -19.5 V | -20 V | Negative | 0.3 V | Surface Mount | -40 °C | 125 °C | 1 | Current Limit, Enable | Over Current, Over Temperature, Short Circuit | 80 mA | 12-WFDFN Exposed Pad | 12-DFN (3x3) | 200 mA |
Analog Devices Inc LT3093IMSE#PBF | Adjustable | 10 µA | 0 V | 73 dB | -19.5 V | -20 V | Negative | 0.3 V | Surface Mount | -40 °C | 125 °C | 1 | Current Limit, Enable | Over Current, Over Temperature, Short Circuit | 80 mA | 12-TSSOP | 12-MSOP-EP | 200 mA |
Analog Devices Inc LT3093HMSE#TRPBF | Adjustable | 10 µA | 0 V | 73 dB | -19.5 V | -20 V | Negative | 0.3 V | Surface Mount | -40 °C | 150 °C | 1 | Current Limit, Enable | Over Current, Over Temperature, Short Circuit | 80 mA | 12-TSSOP | 12-MSOP-EP | 200 mA |
Analog Devices Inc LT3093EDD#TRPBF | Adjustable | 10 µA | 0 V | 73 dB | -19.5 V | -20 V | Negative | 0.3 V | Surface Mount | -40 °C | 125 °C | 1 | Current Limit, Enable | Over Current, Over Temperature, Short Circuit | 80 mA | 12-WFDFN Exposed Pad | 12-DFN (3x3) | 200 mA |
Analog Devices Inc LT3093HDD#TRPBF | Adjustable | 10 µA | 0 V | 73 dB | -19.5 V | -20 V | Negative | 0.3 V | Surface Mount | -40 °C | 150 °C | 1 | Current Limit, Enable | Over Current, Over Temperature, Short Circuit | 80 mA | 12-WFDFN Exposed Pad | 12-DFN (3x3) | 200 mA |
Analog Devices Inc LT3093IMSE#TRPBF | Adjustable | 10 µA | 0 V | 73 dB | -19.5 V | -20 V | Negative | 0.3 V | Surface Mount | -40 °C | 125 °C | 1 | Current Limit, Enable | Over Current, Over Temperature, Short Circuit | 80 mA | 12-TSSOP | 12-MSOP-EP | 200 mA |
Analog Devices Inc LT3093HMSE#PBF | Adjustable | 10 µA | 0 V | 73 dB | -19.5 V | -20 V | Negative | 0.3 V | Surface Mount | -40 °C | 150 °C | 1 | Current Limit, Enable | Over Current, Over Temperature, Short Circuit | 80 mA | 12-TSSOP | 12-MSOP-EP | 200 mA |
Key Features
• Ultralow RMS Noise: 0.8µVRMS(10Hz to 100kHz)
• Ultralow Spot Noise: 2.2nV/√Hzat 10kHz
• Ultrahigh PSRR: 73dB at 1MHz
• Output Current: 200mA
• Wide Input Voltage Range: –1.8V to –20V
• Single Capacitor Improves Noise and PSRR
• 100µA SET Pin Current: ±1% Initial Accuracy
• Single Resistor Programs Output Voltage
• Programmable Current Limit
• Low Dropout Voltage: 190mV
• Output Voltage Range: 0V to –19.5V
• Programmable Power Good and Fast Start-Up
• Bipolar Precision Enable/UVLO Pin
• VIOC Pin Controls Upstream Regulator to Minimize Power Dissipation and Optimize PSRR
• Minimum Output Capacitor: 4.7µF Ceramic
• 12-Lead MSOP and 3mm × 3mm DFN Packages
Description
AI
The LT3093 is a high performance low dropout negative linear regulator featuring ADI’s ultralow noise and ultrahigh PSRR architecture for powering noise sensitive applications. The device can be easily paralleled to further reduce noise, increase output current and spread heat on a PCB.The LT3093 supplies 200mA at a typical 190mV dropout voltage. Operating quiescent current is nominally 2.35mA and drops to 3µA in shutdown. The device’s wide output voltage range (0V to –19.5V) error amplifier operates in unity-gain and provides virtually constant output noise, PSRR, bandwidth, and load regulation independent of the programmed output voltage. Additional features are a bipolar enable pin, programmable current limit, fast startup capability and programmable power good to indicate output voltage regulation. The regulator incorporates a tracking function to control an upstream supply to maintain a constant voltage across the LT3093 to minimize power dissipation and optimize PSRR.The LT3093 is stable with a minimum 4.7µF ceramic output capacitor. Built-in protection includes internal current limit with foldback and thermal limit with hysteresis. The LT3093 is available in thermally enhanced 12-Lead MSOP and 3mm × 3mm DFN Packages.ApplicationsRF and Precision Power SuppliesVery Low Noise InstrumentationHigh Speed/High Precision Data ConvertersMedical Applications: Diagnostics and ImagingPost-Regulator for Switching Supplies