Linear Technology Corporation announces the LT3091, the latest addition to our LDO+ family, a 1.5 A low dropout negative linear regulator featuring low noise, rail-to-rail operation, precision programmable current limit and a bidirectional output current monitor. The device is cable-drop compensation capable, easily paralleled for higher current or circuit board heat spreading, and configurable as a 3-terminal floating regulator. The LT3091’s input voltage range is –1.5 V to –36 V. A single resistor programs the adjustable rail-to-rail output voltage from 0 V to –32 V and dropout voltage is only 300 mV (typical at full load).
Features
- Output Current: 1.5A
- Single Resistor Sets Output Voltage
- 50μA SET Pin Current: ±1% Initial Accuracy
- Programmable Current Limit
- Positive or Negative Output Current Monitor
- Parallelable for Higher Current and Heat Spreading
- Low Dropout Voltage: 300mV
- Low Output Noise: 18μVRMS (10Hz to 100kHz)
- Configurable as a 3-Terminal Floating Regulator
- Wide Input Voltage Range: –1.5V to –36V
- Rail-to-Rail Output Voltage Range: 0V to –32V
- Positive/Negative Shutdown Logic or UVLO
- Programmable Cable Drop Compensation
- Load Regulation: 1.2mV (1mA to 1.5A)
- Stable with 10μF Minimum Output Capacitor
- Stable with Ceramic or Tantalum Capacitors
- Thermally Enhanced 14-Lead 4mm × 3mm DFN, 16-Lead TSSOP, 7-Lead TO-220 and DD Packages
LT3091 – –36V, 1.5A Negative Linear Regulator with Programmable Current Limit – [Link]
