Power

45V LDO has a H grade temperature range up to +150°C

12th December 2014
Siobhan O'Gorman
0

The LT3007 PNP-based LDO featuring an ultralow 3µA quiescent current, manufactured by Linear Technology, has been released in a H grade version. The device has a +150°C junction temperature rating, enabling high temperature or high power automotive and industrial applications. Allowing operation in a wide range of applications, the LDO has a high input voltage capability, spanning 2.0 to 45V with an adjustable output voltage ranging from 0.6 to 44.5V.

The device's pinout is FMEA compliant, so the output stays at or below the regulation voltage during an adjacent pin short event, or if a pin is left floating. The LDO's 3µA quiescent and shutdown currents (less than 1µA) enable ultralow standby power consumption, making the IC suitable for applications not requiring shutdown, or those needing moderate output drive capability and high input voltage, such as remote monitoring and low-current battery-powered memory for ‘keep alive’ systems requiring extended run times.

The LT3007 delivers up to 20mA output current with a corresponding low dropout voltage of only 300mV. Output voltage tolerance is tightly regulated to within ±2% over line, load and temperature. The IC optimises stability and transient response with low ESR, ceramic output capacitors as small as 2.2µF. Internal protection circuitry includes reverse-battery protection, reverse output and reverse output-to-input protection, current limiting and thermal limiting for robustness.

The LT3007 is offered in E, I and H grades in an 8-lead SOT-23 package with 3 pins fused to the ground paddle for enhanced thermal performance in both fixed and adjustable versions. 1,000-piece pricing starts at $1.20 each for the E grade and 1.75 for the H grade.

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