The LT3150 is a fast transient response, low input voltage, very low dropout linear regulator controller. It is suitable for applications such as microprocessors, ASICs, and I/O supplies, logic termination supplies, etc. Its transient response is optimized with ceramic output capacitors and has a very low dropout voltage. By selecting the N-channel MOSFET RDS(ON), dropout voltages below 300mV can be achieved for low VIN to low VOUT applications. The LT3150 also includes a fixed frequency boost converter that generates gate drive for the N-channel MOSFET. The internally compensated current mode PWM architecture combined with the 1.4MHz switching frequency allows the use of tiny, low-cost capacitors and inductors. The LT3150 features a multifunction LDO shutdown pin with latchoff. The fixed frequency 1.4MHz boost converter generates MOSFET gate drive. The independent boost converter shutdown control permits LDO output voltage supply sequencing. The LT3150 is available in a 16-lead SSOP package.
The LT3150 is a linear regulator controller that drives a low-cost external N-channel MOSFET as a source follower to produce a fast transient response and very low dropout voltage. It includes a fixed frequency boost regulator that generates gate drive for the external MOSFET, utilizing an internally compensated current mode PWM architecture with a 1.4MHz switching frequency.
| Boost Switching Frequency | 1.4 MHz |
|---|---|
| FB1 Reference Voltage | 1.21 V |
| FB2 Reference Voltage | 1.21 V |
| Operating Ambient Temperature Range | 0°C to 70°C |
| Junction Temperature | 125°C |
| Package Type | 16-Lead SSOP |
| Switch Current Limit | 550 mA |
The internally compensated boost converter operates at a fixed frequency of 1.4MHz.
The device can operate in an ambient temperature range from 0°C to 70°C.